Hydrogenerator Stator Training Facility

Abstract

The invention discloses a training facility for a hydro-turbine generator stator, which is characterized by comprising a stator base of a quarter circle, a plurality of positioning ribs installed in the stator base, and a lower tooth pressure plate and an upper tooth pressure plate, between which a stator core is stacked; in the stator base of a quarter circle, one-fifth of the lower tooth pressure plate is left empty, one-fifth of the lower tooth pressure plate is stacked with a half-height stator core, and the remaining three-fifths of the lower tooth pressure plate and the lower tooth pressure plate are fully stacked with the stator core; in the wire rod slot space formed by the stacked stator core, one-third is left empty, one-third is installed with the lower layer wire rod, and one-third is installed with the upper and lower layer wire rods. The internal structure of the generator stator is fully displayed, which is suitable for cognitive internships in generator maintenance and operation and maintenance training, so that trainees can clearly and quickly recognize the training content, understand its working principle, etc., and can also be used as daily hands-on training for operation and maintenance personnel.

Description

Technical Field

[0001] The invention relates to teaching equipment technology, in particular to a training facility for a hydro-generator stator. Background Art

[0002] The generator stator is one of the important components of the hydro-turbine generator set and is the main component for the generator to generate current. Generator operation and maintenance personnel need to clearly understand and master the structure of the generator stator. This training is a compulsory course for newly employed generator operation and maintenance personnel. However, under normal conditions, the internal structure of the generator stator cannot be intuitively seen. For generator operation and maintenance personnel, training is generally required to be carried out in conjunction with the unit A-level maintenance. This type of maintenance is generally scheduled once every 10 years for the unit, and the opportunity is extremely rare, which cannot meet the training needs of operation and maintenance personnel at all. Too many training personnel entering the maintenance site will affect the development of on-site construction, and the maintenance site is complex, which will pose a great safety hazard. In addition, the normal unit A maintenance does not disassemble the generator stator, and the operation and maintenance personnel still cannot have a deep understanding of the specific structure of the generator stator. Therefore, the effect of using conventional unit maintenance for operation and maintenance personnel training is very unsatisfactory. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and provide a hydro-generator stator training facility which has the characteristics of low cost, strong intuitiveness, and practical hands-on operation.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions: a hydro-generator stator training facility, characterized in that it includes a quarter-circular stator base, in which a plurality of positioning ribs are installed, and a lower tooth pressure plate and an upper tooth pressure plate are provided, and a stator core is stacked between the lower tooth pressure plate and the upper tooth pressure plate; in the quarter-circular stator base, one-fifth of the lower tooth pressure plate is left empty, one-fifth of the lower tooth pressure plate is stacked with a half-height stator core, and the remaining three-fifths of the lower tooth pressure plate and the lower tooth pressure plate are fully stacked with the stator core; in the wire rod slot space formed by stacking the stator core, one-third is left empty, one-third is installed with the lower layer wire rods, and one-third is installed with the upper and lower layer wire rods.

[0005] In the aforementioned hydro-generator stator training facility, preferably, a slot wedge is partially installed in the one-third of the wire rod slot space where the upper and lower wire rods are installed.

[0006] In the aforementioned hydro-generator stator training facility, preferably, the one-third of the wire rod slot space where the upper and lower wire rods are installed is partially installed with gaskets and slot wedges.

[0007] In the aforementioned hydro-generator stator training facility, preferably, the stator core is formed by stacking a number of toothed silicon steel sheets of equal thickness.

[0008] In the aforementioned training facility for the stator of a hydro-turbine generator, preferably, a space is left above one-fifth of the lower tooth pressure plate, the positioning rib is detachably arranged, and a positioning rib adjustment tool is provided.

[0009] In the aforementioned hydro-generator stator training facility, preferably, the pads and slot wedges are partially detachably arranged.

[0010] In the aforementioned hydro-turbine generator stator training facility, preferably, a half-height stator core portion is stacked above the one-fifth lower tooth pressure plate, and the silicon steel sheets are movably stacked.

[0011] In the aforementioned hydro-turbine generator stator training facility, preferably, the quarter-circle stator frame is a retired generator stator frame.

[0012] In the aforementioned hydro-generator stator training facility, preferably, the stator frame is located in a training test bench, and an experimental recorder is provided in the training test bench.

[0013] In the aforementioned hydro-generator stator training facility, preferably, the training test bench is also provided with a generator stator structure picture, a working principle picture and safe operating procedures.

[0014] This technical solution has designed a complete set of generator stator training equipment, which uses retired generator stator prototypes and only leaves 1 / 4 of the stator frame to fully display the internal and external structure of the generator stator. An incomplete assembly method is used for vulnerable, inspected, and combined parts, thereby satisfying the operation and maintenance training personnel's full understanding of the true content of the generator stator.

[0015] The 1 / 4 circle real generator stator can clearly observe the basic components of the generator stator base in a vertical section, and locate the lower tooth pressure plate by installing standard positioning ribs, and then stack the stator core. The stator core is stacked by a large number of toothed silicon steel sheets, and the formation process of the wire rod slots after the silicon steel sheets are stacked can be directly observed. Furthermore, this scheme effectively allocates the stator core stacking space, and displays the core structure in a way that a small amount of space is left blank, most of the full configuration, and moderate semi-high configuration, so that the operation and maintenance trainees can see it at a glance and quickly understand it. Similarly, the complete wire rod slot formed is further visually allocated, and the effect of combining and decomposing related components, including upper and lower layers of wire rods, is achieved by leaving blanks, half-matching, and fully-installed wire rods. There are also fixing pads and slot wedges for the upper and lower layers of wire rods, until every detail is visible. Part of the structure of this scheme adopts an incomplete assembly method to fully display the composition of the generator stator, basically including all elements such as the stator frame. Since the device structure is completely constructed with real unit parts, it fully demonstrates the structure and working principle of the generator stator, and can even be used as a training ground for daily hands-on operations of operation and maintenance personnel.

[0016] Furthermore, this scheme arranges some components of the empty, semi-assembled or fully-assembled parts in a detachable manner. For example, the locating ribs in the empty part between the 1 / 5 lower tooth pressure plate and the upper tooth pressure plate are detachable, and are equipped with positioning rib adjustment tools to organize and simplify the process, and can be used for positioning rib adjustment operation training at any time. Similarly, movable silicon steel sheets are used for silicon steel sheet stacking training, detachable wire rods are used for wire rod installation training, and some detachable corrugated gaskets and slot wedges can be used for training on this operation project, and so on.

[0017] Compared with the prior art, the beneficial effects of the present invention are: it is transformed from retired generator stators, waste utilization is low-cost, some structures are assembled incompletely, and the internal structure of the generator stator is fully displayed. It is suitable for generator maintenance, operation and maintenance training and cognitive internships of related majors in various universities, so that trainees can clearly and quickly recognize the training content, understand its working principles, etc. It can also be used as daily hands-on training for operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention in a usage state.

[0020] Figure 2 yes Figure 1 Top view of the .

[0021] Figure 3 yes Figure 1 Right view of .

[0022] Figure 4 It is a partial enlarged schematic diagram of the fixed structure of the wire rod part.

[0023] In the figure: 1. stator frame, 2. wire rod, 3. stator core, 4. positioning rib, 5. upper tooth pressure plate, 6. lower tooth pressure plate, 7. tensioning screw, 8. wire rod support ring. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0025] See also Figures 1 to 4The present embodiment is a hydro-turbine generator stator training facility. A quarter of a retired generator stator frame 1 is taken as a base. 36 positioning ribs 4 are installed in the stator frame 1, and a lower tooth pressure plate 6 is installed. Then, a stator core 3 is stacked. The stator core 3 is stacked by a large number of 0.5 mm thick toothed silicon steel sheets. An upper tooth pressure plate 5 is installed on the upper part of the silicon steel sheets.

[0026] The specific configuration of each component is as follows: in a quarter-circle stator base, one-fifth of the lower tooth pressure plate 6 is left empty, one-fifth of the lower tooth pressure plate 6 is stacked with a half-height stator core, and the remaining three-fifths of the lower tooth pressure plate 6 are fully stacked with the stator core, and then the upper tooth pressure plate 5 is installed, half of which is fixed with a tightening screw 7. In the wire rod slot space formed by the three-fifths full stator core in the previous step, it is further allocated, one-third of the wire rod slot is left empty, one-third of the wire rod slot is installed with the lower layer wire rod 2, and one-third of the wire rod slot is installed with the upper and lower layer wire rods 2, and fixed with a wire rod support ring 8.

[0027] Further, in one third of the wire rod slot space where the upper and lower wire rods are installed, half is installed with a slot wedge, and the other half is not installed with a cushion strip and a slot wedge. In the space where a slot wedge is installed, half is additionally installed with a cushion strip.

[0028] Furthermore, in the empty space above the lower tooth pressure plate 6 of one-fifth, the positioning rib 4 is detachably arranged, and a positioning rib adjustment tool is provided. In the one-third of the wire rod slot space where the upper and lower wire rods are installed, a slot wedge and a padding strip are installed in half, and a part of the padding strip and the slot wedge are detachably arranged. In the half-height stator core portion stacked above the lower tooth pressure plate 6 of one-fifth, the silicon steel sheets are movably stacked and not fixed.

[0029] In addition, the stator frame 1 is set in the training experiment table, which is also equipped with an experimental recorder, such as a photographic device, to record the entire training process, which is used for post-class analysis of the training content and correction of incorrect operating methods. There are also electronic stator structure pictures, working principle pictures and safe operating procedures on the training experiment table for trainees to read and refer to at any time.

[0030] During the training, since some structures are incompletely assembled, trainees can fully understand the generator stator structure including stator frame, positioning ribs, iron core, wire rods, slot wedges, tooth pressure plates, etc. For the part without iron core installed, the detachable positioning ribs are used for positioning rib adjustment operation training; the movable silicon steel sheets can be used for lamination training operation; the detachable wire rods are used for wire rod installation training; others such as corrugated gaskets, slot wedges, etc. can also be used as corresponding training items.

[0031] The above embodiments are for explanation of the present invention, not for limitation of the present invention. Obviously, those skilled in the art may make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Any structure after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A hydro-generator stator training facility, characterized by Including a quarter A circular stator base (1) is provided with a plurality of positioning ribs (4) in the stator base, and a lower tooth pressure plate (6) and an upper tooth pressure plate (5) are provided. The lower tooth pressure plate is positioned by installing standard positioning ribs, and a stator core (3) is stacked between the lower tooth pressure plate and the upper tooth pressure plate; in the stator base of a quarter circle, one-fifth of the lower tooth pressure plate is left empty, one-fifth of the lower tooth pressure plate is stacked with a half-height stator core, and the remaining three-fifths of the lower tooth pressure plate and the stator core are stacked between the lower tooth pressure plate and the lower tooth pressure plate; in the wire rod slot space formed by stacking the stator core, one-third is left empty, one-third is installed with the lower layer wire rod (2), and one-third is installed with the upper and lower layer wire rods; By adopting an incomplete assembly method for some structures, the composition of the generator stator is fully displayed.

2. The hydro-generator stator training facility according to claim 1 is characterized in that The one-third is installed in the wire rod slot space of the upper and lower wire rods, and a slot wedge is partially installed.

3. The hydro-generator stator training facility according to claim 1 or 2, characterized in that: The one-third is installed in the wire rod slot space of the upper and lower wire rods, and part of it is installed with gaskets and slot wedges.

4. The hydro-generator stator training facility according to claim 1, characterized in that: The stator core (3) is formed by stacking a number of toothed silicon steel sheets of equal thickness.

5. The hydro-generator stator training facility according to claim 1, 2 or 4, characterized in that: A hollow area is left above one-fifth of the lower tooth pressure plate (6), and the positioning rib (4) is detachably arranged and equipped with a positioning rib adjustment tool.

6. The hydro-generator stator training facility according to claim 3, characterized in that: The cushion strips and the parts in the slot wedges are detachably arranged.

7. The hydro-generator stator training facility according to claim 4, characterized in that: A half-height stator core portion is stacked above the one-fifth lower tooth pressure plate (6), and the silicon steel sheets are stacked in a movable manner.

8. The hydro-generator stator training facility according to claim 1, characterized in that: The quarter-circle stator frame (1) is a retired generator stator frame.

9. The hydro-generator stator training facility according to claim 1, characterized in that: The stator frame (1) is located in a training experiment platform, and an experiment recorder is provided in the training experiment platform.

10. The hydro-generator stator training facility according to claim 9, characterized in that: The training experimental platform is also provided with pictures of the electronic stator structure, working principle pictures and safe operating procedures.

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