On-site quick-assembly and quick-disassembly overhaul stand for upper part of rotor magnetic pole of generator motor

Abstract

The invention discloses an on-site quick-assembly and quick-disassembly overhaul stand for the upper part of a rotor magnetic pole of a generator motor, which is characterized in that a planar annular passage is made by taking the inner diameter of a stator of the generator motor, the diameter of the rotor and a fan above the rotor as references, and the annular passage is formed by connecting a plurality of sector ring platforms which have the same area and are made of insulating materials; a quick-assembly and quick-disassembly mechanism is arranged between every two adjacent sector ring platforms, and the bottom of each sector ring platform is provided with an accommodating space for a magnetic pole upper lead. A stable and safe working platform is provided for operating personnel, equipment damage caused by treading on a lead on the upper portion of a magnetic pole, a damping ring flexible connector and the like is avoided, the body of the operating personnel is protected from being hurt, meanwhile, potential equipment safety hazards caused by the fact that overhauling materials and tools fall off from the position above the rotor magnetic pole are avoided, mounting and dismounting are fast, and the working efficiency is high. Operation space is basically not occupied, and storage is convenient.

Description

Technical Field

[0001] The invention relates to a maintenance technology for a turbine generator motor set, in particular to an on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform. Background Art

[0002] Reversible pump turbine-generator sets play an important role in the power grid, such as peak-shaving and valley-filling, and emergency standby. For medium and large units, the inner and outer diameters of the stator rotor are more than 4 meters, and the outer diameter of the fan installed above the rotor is also more than 3 meters. Since the upper end of the stator, the rotor and the rotor fan are encapsulated inside the generator motor by the stator windshield, it is necessary to remove a stator windshield and related components from the upper and lower parts when the unit is overhauled. The traditional maintenance method is that the operator enters the generator motor and squats on the upper part of the rotor pole to carry out work. Because there is a fan-shaped hole between the two poles, the size is about or larger than the size of an adult's foot, and the damping ring soft connection and the upper pole lead are installed in this part, the operator is very likely to step on the pole lead during the movement, causing damage to the pole lead. If the legs and feet fall into the fan-shaped hole between the poles, it will cause foot sprains and damage to the damping ring soft connection, so there is a great safety hazard.

[0003] There are many types of maintenance platforms in the public technology, mainly in the following ways: one is a lifting maintenance platform with a mobile car, such as the patent publication number CN103762510A, a platform for the installation and maintenance of current transformers in the power industry, including a mobile car, a lifting device and a placement table, a lifting device for adjusting the maintenance object up and down is fixedly installed on the mobile car, and the placement table is installed on the lifting device. The second is to set up a fixed frame maintenance platform, such as a maintenance platform with the patent publication number CN116220442A, including a connected workbench and multiple support members, and the support members include lifting columns, cross braces, etc. These maintenance platforms all require corresponding equipment activities and support installation space. If used for the maintenance of the upper part of the rotor pole of the generator motor, either the frame is complicated and the disassembly process is long, or the mobile car cannot reach the work site or the mobile car and the standing platform need to be modified, and it is also easy to cause collisions, friction and other accidents to the equipment being repaired. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned problems and to provide an on-site quick-install and quick-disassemble upper maintenance platform for the rotor poles of a generator motor, which has the characteristics of protecting on-site equipment, avoiding stepping on the upper leads of the poles, ensuring the safety of operators during the work process, preventing tools and parts from falling from above the rotor poles, and being quick to install and disassemble and occupying a small space.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions: an on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform, which is characterized in that a planar annular passage is formulated based on the inner diameter of the generator motor stator, the rotor diameter, and the fan above the rotor, and the annular passage is connected by a number of fan ring platforms of equal area and made of insulating materials; a quick-install and quick-disassemble mechanism is provided between adjacent fan ring platforms, and a accommodating space for the upper magnetic pole leads is provided at the bottom of the fan ring platform.

[0006] In the aforementioned on-site quick-install and quick-disassemble upper maintenance platform for the rotor poles of the generator motor, preferably, the outer diameter of the annular passage formed by a plurality of fan ring platforms is less than or equal to the inner diameter of the stator of the generator motor, and its inner diameter is adapted to the diameter of the fan above the rotor.

[0007] In the aforementioned on-site quick-install and quick-disassemble generator motor rotor pole upper inspection platform, preferably, the pole upper lead accommodating space provided at the bottom of the fan ring platform is composed of two supporting guard strips located on the bottom surface of the fan ring platform; the two supporting guard strips are located at two different busbar positions of the fan ring platform.

[0008] In the aforementioned on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform, preferably, a soft rubber pad layer is provided on the surface of the support guard strip.

[0009] In the aforementioned on-site quick-assembly and quick-disassembly generator motor rotor pole upper maintenance platform, preferably, the quick-assembly and quick-disassembly mechanism is composed of an L-shaped groove arranged on the edge of the fan ring platform and a plug cooperating with the L-shaped groove; the L-shaped grooves on the edges of two adjacent fan ring platforms together form a locking relationship with the plug.

[0010] In the aforementioned on-site quick-install and quick-disassemble upper maintenance platform for the rotor poles of the generator motor, preferably, the plug has a T-shaped slot in the length direction, and the L-shaped slots on the edges of the two adjacent fan ring platforms together constitute a fully contained plug accommodating space, and the top surface of the plug is flush with the top surface of the fan ring platform.

[0011] In the aforementioned on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform, preferably, a limit handle is provided at the tail of the plug.

[0012] In the aforementioned on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform, preferably, the length of the plug is equal to the busbar length of the fan ring platform.

[0013] In the aforementioned on-site quick-assembly and quick-disassembly generator motor rotor pole upper maintenance platform, preferably, the quick-assembly and quick-disassembly mechanism is composed of a sink groove arranged at the edge of the fan ring platform and a connecting plate connected to the sink grooves at the edges of two adjacent fan ring platforms.

[0014] In the aforementioned on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform, preferably, all corners of the fan ring platform are transitioned by circular arcs; and the surface of the fan ring platform is provided with an anti-slip layer.

[0015] This technical solution cleverly utilizes the on-site position relationship of the generator motor's stator, rotor, and rotor fan, and adopts a separate combination method. It is erected on the upper part of the rotor pole during unit maintenance, forming a flat annular aisle between the stator and the rotor fan, and the upper lead wires of the pole are protected and avoided through the accommodating space at the bottom of the fan ring platform, thereby providing a free squatting and standing platform for maintenance personnel to enter the generator motor.

[0016] This device uses equal-area, insulating materials to make the fan ring platform to obtain the interchangeability conditions of all parts of the entire circular corridor and the basic safety of power operations. All corners are treated with arc transitions, and the surface of the supporting guard strip is covered with a soft rubber cushion layer, which is beneficial to protecting on-site equipment and avoiding damage to the insulation of the equipment surface caused by bumps during the use of this device.

[0017] The device is provided with a space for accommodating the upper lead wire of the magnetic pole at the bottom of the fan ring platform. The space is composed of supporting guard strips located at two different busbar positions on the bottom surface of the fan ring platform. The supporting guard strips not only constitute the space for protecting the wires, but also constitute the bottom support of the entire maintenance platform, reducing the high flatness requirements caused by the large-surface support contact of the maintenance platform and improving the stability of the platform. Since the platform covers all the upper lead wires of the magnetic pole below, it completely avoids the maintenance personnel from stepping on the upper lead wires of the magnetic pole, thereby protecting the upper lead wires of the magnetic pole from damage. At the same time, a soft rubber pad layer is also provided on the surface of the supporting guard strip to further reduce the deformation of equipment components caused by hard contact extrusion.

[0018] The outer diameter of the annular passage formed by all the fan ring platforms in this scheme is adapted to the inner diameter of the stator of the generator motor, and the inner diameter is adapted to the diameter of the fan above the rotor. The flat annular passage thus formed between the stator and the rotor fan completely covers components such as the upper leads of the magnetic poles and the damping ring soft connections, thereby avoiding damage to the equipment and protecting the legs and feet of the operators from injury, and also preventing tools from falling from above the rotor magnetic poles, causing equipment damage and personal injury accidents.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: by quickly building a circular passage on site between the stator and the rotor fan, a stable and safe working platform is provided for the operators, avoiding equipment damage caused by stepping on the upper leads of the magnetic poles, the soft connections of the damping ring, etc., which not only protects the operators from physical harm, but also avoids equipment safety hazards caused by maintenance materials and tools falling from above the rotor magnetic poles. The installation and disassembly are quick, basically no working space is occupied, and storage is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention.

[0021] Figure 2 yes Figure 1 Bottom view of .

[0022] Figure 3 yes Figure 1 Schematic diagram of the fan ring platform structure.

[0023] Figure 4 yes Figure 3 Schematic diagram of the BB structure.

[0024] Figure 5 yes Figure 1 Schematic diagram of the AA structure.

[0025] Figure 6 It is a schematic diagram of the partially enlarged structure of the L-shaped groove on the edge of the fan ring platform.

[0026] Figure 7 It is a schematic diagram of a plug structure of the present invention.

[0027] Figure 8 yes Figure 1 Schematic diagram of the local enlarged structure at M in the middle.

[0028] Fig. 9 It is a structural schematic diagram of embodiment 2 of the present invention.

[0029] Fig.10 yes Fig. 9 Schematic diagram of the CC structure.

[0030] In the figure: 1- fan ring platform, 101- L-shaped groove, 2- bolt, 201- T-shaped groove, 202- limit handle, 3- support guard bar, 4- rubber cushion layer, 5- connecting plate. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0032] This embodiment is a generator motor rotor magnetic pole upper maintenance platform that can be quickly assembled and disassembled on site, such as Figure 1 , Figure 2 As shown, a planar annular passage is formulated based on the inner diameter of the generator motor stator, the rotor diameter, and the fan above the rotor. The benchmark standard is generally that the outer diameter of the annular passage is less than or equal to the inner diameter of the generator motor stator, and the inner diameter of the annular passage is similar to the diameter of the fan above the rotor.

[0033] The annular corridor is formed by connecting 6 fan-ring platforms 1 made of insulating materials with equal areas. Figure 3As shown, the arc length of each fan ring platform 1 is 60°, and a quick-install and quick-release mechanism is provided between adjacent fan ring platforms 1. The bottom of the fan ring platform 1 is provided with a space for accommodating the upper lead of the magnetic pole, and the accommodating space is composed of two supporting guard strips 3 located on the bottom surface of the fan ring platform, and the two supporting guard strips 3 are located at two different busbar positions of the fan ring platform.

[0034] The surface of the support strip 3 is provided with a soft rubber cushion layer 4, such as Figure 4 shown.

[0035] All corners of the fan ring platform 1 are transitioned through arcs to prevent the insulation layer from being damaged by collisions with the equipment surface during use; the surface of the fan ring platform 1 is also provided with an anti-slip layer to increase friction and improve standing stability.

[0036] Quick-install and quick-release mechanism embodiment 1:

[0037] See also Figure 5 , Figure 6 The quick-install and quick-release mechanism is composed of an L-shaped groove 101 arranged on the edge of the fan ring platform 1 and a plug 2 that cooperates with the L-shaped groove. The L-shaped grooves on the edges of two adjacent fan ring platforms 1 together form a locking relationship with the plug 2. Among them, the plug 2 has a T-shaped groove 201 in the length direction, such as Figure 7 As shown, the L-shaped grooves on the sides of the two adjacent fan ring platforms 1 together form a fully accommodating space for the plug 2, so that the top surface of the plug 2 is flush with the top surface of the fan ring platform 1 to prevent the operator from jumping when stepping on the pedal. The length of the plug 2 is equal to the generatrix length of the fan ring platform 1, so as to obtain the maximum locking surface. The tail of the plug 2 is also provided with a limit handle 202, as shown in FIG. Figure 8 As shown, the limit handle 202 can not only limit the effective length of the bolt 2 and determine the relationship of the locking components, but also serve as an operating handle or a simple knocking point.

[0038] Example 2 of quick-install and quick-release mechanism:

[0039] The quick-install and quick-release mechanism is composed of a sink groove arranged at the edge of the fan ring platform 1 and a connecting plate 5 connected in the sink grooves at the edges of two adjacent fan ring platforms 1. Fig. 9 , Fig.10 As shown, the corresponding grooves are first milled on the edge of each fan ring platform 1, and a connecting plate 5 with connecting holes is provided. When two adjacent fan ring platforms 1 are merged on site, they can be connected using the connecting plate 5 and bolts, nuts, washers, and spring washers, wherein the bolt heads do not protrude above the surface of the fan ring platform 1, and the nuts are used for bottom fastening.

[0040] On-site application: When overhauling the unit, after removing the upper windshield of the stator, place the six fan-shaped platforms 1 on the upper part of the rotor poles in sequence and adjust the positions, and then use the plugs 2 or the connecting plates 5 to connect and fix them in sequence, and then it can be used, which is convenient, fast and safe.

[0041] The above embodiments are for explanation of the present invention, not for limitation of the present invention. For example, the support guard bar 3 is an I-shaped structure or a channel steel structure made of insulating material, etc. Any structure, method, etc. that are simply transformed from the present invention, without departing from the principles of the present technical solution and without making creative work, shall fall within the protection scope of the present invention.

Claims

1. A generator motor rotor magnetic pole upper maintenance platform with quick assembly and disassembly on site, characterized in that a planar annular passage is formulated based on the inner diameter of the generator motor stator, the diameter of the rotor, and the fan above the rotor, and the annular passage is formed by connecting a plurality of fan ring platforms (1) of equal area and made of insulating material; a quick assembly and disassembly mechanism is provided between adjacent fan ring platforms, and a space for accommodating the upper magnetic pole lead is provided at the bottom of the fan ring platform.

2. The on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform according to claim 1 is characterized in that: The outer diameter of the annular passage formed by a plurality of fan ring platforms (1) is smaller than or equal to the inner diameter of the stator of the generator motor, and the inner diameter thereof is matched with the diameter of the fan above the rotor.

3. The on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform according to claim 1 is characterized in that: The magnetic pole upper lead accommodating space provided at the bottom of the fan ring platform (1) is composed of two supporting guard strips (3) located on the bottom surface of the fan ring platform; the two supporting guard strips are located at two different busbar positions of the fan ring platform.

4. The on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform according to claim 3 is characterized in that: A soft rubber pad layer (4) is provided on the surface of the supporting guard strip (3).

5. The on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform according to claim 1, characterized in that: The quick-install and quick-release mechanism is composed of an L-shaped groove (101) arranged on the edge of the fan ring platform (1) and a plug (2) matched with the L-shaped groove; the L-shaped grooves on the edges of two adjacent fan ring platforms together form a locking relationship with the plug.

6. The on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform according to claim 5, characterized in that: The plug (2) has a T-shaped groove (201) in the length direction, and the L-shaped grooves on the edges of two adjacent fan ring platforms (1) together form a fully accommodating plug accommodating space, and the top surface of the plug is flush with the top surface of the fan ring platform.

7. The on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform according to claim 5 or 6, characterized in that: A limiting handle (202) is provided at the tail of the plug (2).

8. The on-site quick-install and quick-disassemble generator motor rotor magnetic pole upper maintenance platform according to claim 5 or 6, characterized in that: The length of the plug (2) is equal to the busbar length of the fan ring platform (1).

9. The on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform according to claim 1, characterized in that: The quick assembly and quick disassembly mechanism is composed of a recessed groove arranged at the edge of the fan ring platform (1) and a connecting plate (5) connected to the recessed grooves at the edges of two adjacent fan ring platforms.

10. The on-site quick-install and quick-disassemble generator motor rotor pole upper maintenance platform according to claim 1, characterized in that: All corners of the fan ring platform (1) are transitioned by circular arcs; and an anti-slip layer is provided on the surface of the fan ring platform.

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