CN214149109U - Vertical hydroelectric set main shaft and runner concentricity measurement teaching device - Google Patents
Vertical hydroelectric set main shaft and runner concentricity measurement teaching device Download PDFInfo
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- CN214149109U CN214149109U CN202022645145.0U CN202022645145U CN214149109U CN 214149109 U CN214149109 U CN 214149109U CN 202022645145 U CN202022645145 U CN 202022645145U CN 214149109 U CN214149109 U CN 214149109U
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Abstract
The utility model relates to a vertical hydroelectric set main shaft and runner concentricity measurement teaching device belongs to concentricity measurement teaching technical field. The device comprises a main shaft and a rotating wheel; the lower end of the main shaft is connected with the rotating wheel; the upper end of the main shaft is fixedly connected with the measuring center frame through an upper flange of the main shaft; an insulating gasket is arranged between the upper flange of the main shaft and the measuring center frame; the measuring center frame is a cross; four ends of the measuring center frame are respectively connected with piano wires; the lower end of the piano wire is hung with a heavy hammer; the heavy hammer is soaked in the oil drum with engine oil. The utility model discloses concentricity measurement teaching device, simple structure, cost are low, and the on-the-spot work is actual in the subsides. The device can be used for the work such as the skill certification and the skill competition of the hydroelectric machinery overhaul professionals, is simple and convenient to apply, and has high economic benefit.
Description
Technical Field
The utility model belongs to the technical field of the concentricity measurement teaching, concretely relates to vertical hydroelectric set main shaft and runner concentricity measurement teaching device.
Background
When the water turbine generator set is subjected to the extended A-level maintenance, after the rotating wheel is connected with the main shaft, the checking of the concentricity of the main shaft and the rotating wheel is very important work, and whether the data is accurate or not directly influences the maintenance and installation quality of the set. The concentricity does not meet the standard requirement, the machine set can generate larger ferry when in operation, and the rotating wheel can collide with the fixed part when in serious condition, so that the machine set can generate serious accidents.
The current expanding maintenance interval period of the wheel generator is longer, the maintenance time is shorter, the maintenance personnel is required to efficiently and accurately measure data, and whether the concentricity of the rotating wheel meets the standard requirement or not is judged according to the data. The concentricity of the main shaft and the rotating wheel needs to be measured, a measurer has higher measuring skill, the training time is limited in the overhauling process, and the requirement for improving the skill of the measurer cannot be met. Therefore, it is necessary to design and manufacture a teaching device for measuring the concentricity of the main shaft and the rotating wheel of the vertical water turbine generator set.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving prior art's is not enough, improves the maintainer and measures technical ability, provides a vertical hydroelectric set main shaft and runner concentricity measurement teaching device, and the device is as a measured real standard equipment, can be used to teaching and training.
In order to achieve the above object, the utility model adopts the following technical scheme:
a vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device comprises a main shaft and a runner;
the lower end of the main shaft is connected with the rotating wheel;
the upper end of the main shaft is fixedly connected with the measuring center frame through an upper flange of the main shaft;
an insulating gasket is arranged between the upper flange of the main shaft and the measuring center frame;
the measuring center frame is a cross;
four ends of the measuring center frame are respectively connected with piano wires;
the lower end of the piano wire is hung with a heavy hammer;
the heavy hammer is soaked in the oil drum with engine oil.
Further, it is preferable that the lower end of the main shaft and the runner are coupled by 12M 30 bolts.
Further, it is preferable that the flange on the main shaft is fixedly connected with the measuring center frame through 4M 10 bolts.
Further, it is preferable that the main shaft and the runner are made of Q235 steel.
Further, it is preferable that the roughness of the upper flange surface of the main shaft, the journal of the main shaft, and the upper and lower leak-stopping rings of the runner are each less than 6.3 μm.
Further, it is preferable that the roundness of the journal of the main shaft and the upper and lower leak-stopping rings of the runner is less than 0.10 mm.
Further, it is preferable that the diameter of the piano wire is 0.30mm and the weight of the weight is 5 kg.
Further, it is preferable that the runner is placed on 4 pairs of symmetrically arranged wedge plates.
Further, it is preferable that the wedge plate has a length × width × height of 300 × 200 × 50 mm.
Compared with the prior art, the utility model, its beneficial effect does:
through the utility model discloses concentricity measurement teaching device enables the personnel that have not contacted inside micrometer electricity method measurement concentricity to know easily and master measuring basic knowledge and skill to enable the water and electricity and overhaul the practitioner through the exercise of relapseing, skilled grasp measuring skill and concentricity calculation method, just can high-efficient, accurate completion main shaft and the measurement of runner concentricity examine and repair the scene.
The utility model discloses concentricity measurement teaching device, simple structure, cost are low, and the on-the-spot work is actual in the subsides. The device can be used for the work such as the skill certification and the skill competition of the hydroelectric machinery overhaul professionals, is simple and convenient to apply, and has high economic benefit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device of the utility model;
wherein, 1, measuring the center frame; 2. an insulating spacer; 3. a main shaft upper flange; 4. an M10 bolt; 5. a main shaft; 6. a piano wire; 7. an M30 bolt; 8. a rotating wheel; 9. a weight; 10. an oil drum; 11. a wedge plate; 12. a main shaft lower flange;
fig. 2 is a schematic diagram of data measurement.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "provided" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention is understood according to the specific situation.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As shown in fig. 1, the teaching device for measuring the concentricity of the main shaft and the rotating wheel of the vertical water-turbine generator set comprises a main shaft 5 and a rotating wheel 8;
the lower end of the main shaft 5 is connected with the rotating wheel 8 through a main shaft lower flange 12, preferably, the main shaft is connected with the rotating wheel through 12M 30 bolts 7, the relative position of the main shaft and the rotating wheel can be adjusted, and the adjusting range is within 1 mm;
the measuring center frame 1 is a cross, and the preferable material is 40# channel steel;
the upper end of a main shaft 5 is fixedly connected with a measuring center frame 1 through a main shaft upper flange 3 and is fixedly connected through 4M 10 bolts 4;
an insulating gasket 2 is arranged between the upper flange 3 of the main shaft, the M10 bolt 4 and the measuring center frame 1;
four ends of the measuring center frame 1 are respectively connected with piano wires 6; the diameter of the piano wire 6 is preferably 0.30 mm;
the lower end of the piano wire 6 is hung with a heavy hammer 9; the weight of the weight 9 is preferably 5 kg;
the weight 9 is soaked in the oil drum 10 with engine oil.
Preferably, the main shaft 5 and the runner 8 are both made of Q235 steel.
Preferably, the roughness of the surface of the upper flange 3 of the main shaft, the shaft neck of the main shaft 5 and the upper and lower leakage-stopping rings of the runner 8 is less than 6.3 μm.
Preferably, the roundness of the journal of the main shaft 5 and the upper and lower leakage-stopping rings of the runner 8 is less than 0.10 mm.
Preferably, the runner 8 is placed on 4 pairs of symmetrically arranged wedge plates 11, and the length × width × height of the wedge plates 11 is 300 × 200 × 50 mm.
The utility model discloses the size of device: the total height is about 1600mm, the diameter of the steady 1 is measured to be 1000mm, and the weight is about 10 Kg. The diameter of the upper flange 3 of the main shaft is 500mm, the diameter of the lower flange 12 of the main shaft is 350mm, the diameter of the main shaft 5 is 200mm, the diameter of a shaft neck on the main shaft 5 is 400mm, and the weight is about 150 Kg. The runner 8 has a nominal diameter of 600mm and a weight of about 350 kg.
When the device of the utility model is used for teaching, the rotating wheel 8 is adjusted to ensure that the bottom surface of the rotating wheel 8 is in a horizontal position (preferably adjusted by the wedge plate 11), and then four heavy hammers 9 connected with the measuring center frame 1 through the piano wire 6 are respectively arranged in 4 oil drums 10 with engine oil; the concentricity of the main shaft and the rotating wheel is calculated by measuring the distances from the piano wire of the symmetrical 4 azimuths to the shaft neck of the main shaft 5 and the upper and lower leakage-stopping rings of the rotating wheel 8 by an electrical measurement method by using an inside micrometer. The calculation formula is as follows:
Δ=max（∣(L1-S1)-(L3-S3)∣,∣(L2-S2)-(L4-S4)∣）
delta-concentricity of the main shaft and the rotating wheel;
l1, L2, L3, L4-distance of four azimuth journals to piano line;
s1, S2, S3, S4-the distances of the four azimuth wheels to the piano line, as shown in fig. 2.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device is characterized by comprising a main shaft (5) and a runner (8);
the lower end of the main shaft (5) is connected with a rotating wheel (8);
the upper end of the main shaft (5) is fixedly connected with the measuring center frame (1) through a main shaft upper flange (3);
an insulating gasket (2) is arranged between the upper flange (3) of the main shaft and the measuring center frame (1);
the measuring center frame (1) is a cross;
four ends of the measuring center frame (1) are respectively connected with piano wires (6);
a heavy hammer (9) is hung at the lower end of the piano wire (6);
the heavy hammer (9) is soaked in an oil drum (10) filled with engine oil.
2. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the lower end of the main shaft (5) is connected with the runner (8) through 12M 30 bolts (7).
3. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the main shaft upper flange (3) is fixedly connected with the measurement center frame (1) through 4M 10 bolts (4).
4. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the main shaft (5) and the runner (8) are both made of Q235 steel.
5. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the roughness of the surface of the main shaft upper flange (3), the shaft neck of the main shaft (5), the upper and lower leak-stopping rings of the runner (8) is less than 6.3 μm.
6. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the roundness of the shaft neck of the main shaft (5) and the upper and lower leak-stopping rings of the runner (8) is less than 0.10 mm.
7. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the diameter of the piano wire (6) is 0.30mm, and the weight of the weight (9) is 5 kg.
8. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 1, wherein the runner (8) is placed on 4 pairs of symmetrically arranged wedge plates (11).
9. The vertical hydroelectric generating set main shaft and runner concentricity measurement teaching device according to claim 8, wherein the length x width x height of the wedge plate (11) is 300 x 200 x 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022645145.0U CN214149109U (en) | 2020-11-16 | 2020-11-16 | Vertical hydroelectric set main shaft and runner concentricity measurement teaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022645145.0U CN214149109U (en) | 2020-11-16 | 2020-11-16 | Vertical hydroelectric set main shaft and runner concentricity measurement teaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214149109U true CN214149109U (en) | 2021-09-07 |
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| CN202022645145.0U Active CN214149109U (en) | 2020-11-16 | 2020-11-16 | Vertical hydroelectric set main shaft and runner concentricity measurement teaching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN214149109U (en) |
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- 2020-11-16 CN CN202022645145.0U patent/CN214149109U/en active Active
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