CN215003363U - Rotor air gap measuring device - Google Patents
Rotor air gap measuring device Download PDFInfo
- Publication number
- CN215003363U CN215003363U CN202121532829.8U CN202121532829U CN215003363U CN 215003363 U CN215003363 U CN 215003363U CN 202121532829 U CN202121532829 U CN 202121532829U CN 215003363 U CN215003363 U CN 215003363U
- Authority
- CN
- China
- Prior art keywords
- measuring
- block
- measuring block
- slider
- air gap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a rotor air gap's measuring device, include: the device comprises a first measuring block, a second measuring block and a measuring scale; the first measuring block and the second measuring block are both in right-angled trapezoid structures, and measuring scales are respectively arranged on the side walls of the first measuring block and the second measuring block, which are opposite to the inclined plane; a first sliding block is arranged on the inclined surface of the first measuring block, the first sliding block is parallel to the inclined surface of the first measuring block, a lap joint gap is formed between the first sliding block and the first measuring block, and an opening of the lap joint gap is positioned at the top end of the inclined surface of the first measuring block; the inclined plane of the second measuring block is opposite to the inclined plane of the first measuring block, a second sliding block matched with the first sliding block is arranged on the inclined plane of the second measuring block, and the second sliding block is parallel to the first sliding block; the utility model discloses can greatly reduced hydroelectric set equipment structure itself and the measuring error who brings for the measurement factor have improved the measuring accuracy.
Description
Technical Field
The utility model belongs to the technical field of measure, concretely relates to rotor air gap's measuring device.
Background
In the existing process of measuring the air gap between the stator and the rotor of the water-turbine generator set, a single wedge-shaped block is generally inserted into the gap, and then a vernier caliper is used for measuring the trace of the minimum position of the gap after insertion so as to realize the measurement of the air gap between the stator and the rotor of the water-turbine generator set; however, the above-mentioned measuring device has the following disadvantages: the influence of equipment factors and human factors is large, and large errors are easily caused; wherein the equipment factors are: the structures of the magnetic pole damping ring protrusion, the stator screen bolt protrusion and the like on the generator set enable the minimum positions of the gaps to be different; the human factors are as follows: the plug-in tightness and the deflection of the feeler have errors, so that under the double influences of equipment factors, human factors and the like, the error range is increased, and the measurement precision is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rotor air gap's measuring device to solve the current problem that the error that adopts single wedge to measure to exist is big and the precision is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a rotor air gap's measuring device, include: the device comprises a first measuring block, a second measuring block and a measuring scale;
the first measuring block and the second measuring block are both in a right-angled trapezoid structure, wherein the length of the top surface of the first measuring block is greater than that of the bottom surface of the first measuring block, the length of the top surface of the second measuring block is less than that of the bottom surface of the second measuring block, and the slopes of the oblique sides of the first measuring block and the second measuring block are the same;
the side walls of the first measuring block and the second measuring block, which are opposite to the inclined plane, are respectively provided with the measuring scale;
a first sliding block is arranged on the inclined surface of the first measuring block, wherein the first sliding block is parallel to the inclined surface of the first measuring block, an overlapping gap is formed between the first sliding block and the first measuring block, and an opening of the overlapping gap is positioned at the top end of the inclined surface of the first measuring block;
the inclined plane of second measuring block with the inclined plane of first measuring block sets up relatively, be provided with on the inclined plane of second measuring block with first slider matched with second slider, wherein, the second slider with first slider is parallel, just the second slider inserts from the opening behind the overlap joint clearance, the overlap joint is in on the first slider.
Based on the above disclosure, the utility model adopts the two measuring blocks to cooperate with each other, namely the second slider on the second measuring block is lapped on the first slider of the first measuring block, so that the two are lapped in pairs, and the side walls of the two opposite to the inclined plane are respectively provided with the measuring scale, therefore, the utility model can directly measure through the measuring scale without plugging in the clearance gauge after the lapping of the two measuring blocks is finished; therefore, compared with the traditional wedge-shaped block measurement, the measurement error caused by equipment factors such as the protrusion of a magnetic pole damping ring and the protrusion of a stator screen bolt and artificial factors such as the plugging tightness of a feeler gauge in the measurement process is reduced; in addition, the overlap joint position accessible first slider and the second slider of first measuring block and second measuring block are adjusted, consequently, can realize the overlap joint location of two measuring blocks when measuring to guarantee to reach the best measuring position, compare in traditional wedge measurement promptly, the utility model discloses can reduce the error that the overlap joint skew caused.
Through the design, the utility model discloses measuring error that can greatly reduced hydroelectric set equipment structure itself and artificial measuring factor brought has improved the measuring accuracy.
In one possible design, the length of the measuring ruler is the same as the height of the first measuring block and/or the second measuring block.
In one possible design, one end of the first sliding block is fixed at the bottom end of the inclined surface of the first measuring block through a first connecting block, so that the lap joint gap is formed between the first sliding block and the inclined surface of the first measuring block;
one end of the second sliding block is fixed at the top end of the inclined plane of the second measuring block through a second connecting block, so that the second sliding block is parallel to the first sliding block.
Based on the disclosure, the utility model discloses a specific mounting structure of the first slider and the second slider, namely, the first slider and the second slider are respectively fixed on the inclined plane of the first slider through the first connecting block and the inclined plane of the second slider through the second connecting block; through the structure, the first sliding block and the inclined plane of the first measuring block can be ensured to be parallel, and meanwhile, a lap joint gap is formed between the first sliding block and the inclined plane of the first measuring block, so that the second sliding block can be inserted conveniently; in a similar way, the second connecting block can ensure that the second sliding block is parallel to the inclined plane of the second measuring block, and a gap is formed between the second sliding block and the second measuring block, so that the first sliding block is inserted, the second sliding block and the second measuring block are overlapped, and the air gap between the stator and the rotor of the water-turbine generator set is measured.
In one possible design, the length of the first sliding block is equal to the length of the first measuring block inclined surface, and the length of the second sliding block is equal to the length of the second measuring block inclined surface.
Based on the above disclosure, the utility model discloses a length that sets up the slider equals with inclined plane length, and the adjustment range of multiplicable two measuring block overlap joint positions, and then improves measuring application scope.
In one possible design, the first measuring block and the second measuring block are respectively provided with an operating handle on the top surface.
Based on the above disclosure, the present invention can facilitate the measuring personnel to move the two measuring blocks by arranging the operating handle on the top surfaces of the two measuring blocks, so as to adjust the lapping position; through the design, the use convenience is improved.
In one possible design, the operating handle comprises a connecting rod and a lifting cap, wherein one end of the connecting rod is fixedly connected with the lifting cap, and the other end of the connecting rod is fixed on the top surface of the first measuring block.
In one possible design, the other end of the connecting rod is screwed on the top surface of the first measuring block.
In one possible design, the two measuring tapes are respectively adhered to the side walls of the first measuring block and the second measuring block opposite to the inclined plane.
In one possible design, the measuring scale is a graduated scale.
In one possible design, the first measuring block and the second measuring block are made of carbon steel, stainless steel or iron.
The utility model has the advantages that:
(1) the utility model discloses can greatly reduced hydroelectric set equipment structure itself and the measuring error who brings for the measurement factor have improved the measuring accuracy.
(2) The utility model discloses a directly set up the dipperstick on the measuring block, need not to fill in the clearance gauge when measuring, not only reduced measuring error, can also directly carry out the reading, it is more convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of the first measuring block and the second measuring block provided by the present invention when they are not overlapped.
Fig. 2 is a schematic structural diagram of the first measuring block and the second measuring block provided by the present invention during the lap joint.
Fig. 3 is a schematic measurement diagram of the first measurement block and the second measurement block provided by the present invention.
Reference numerals: 10-a first measurement block; 20-a second measurement block; 30-measuring the scale; 40-a first slide; 50-a second slide; 60-a first connecting block; 70-a second connecting block; 80-operating handle; 81-connecting rod; 82-carrying the cap.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Examples
As shown in fig. 1 to 3, the measuring device for the air gap of the rotor provided by the embodiment optimizes a measuring structure, namely, two measuring blocks are mutually inverted and overlapped to form the measuring structure, and a measuring scale is arranged on the two measuring blocks simultaneously, so that a feeler is not required to be plugged in during measurement, and therefore, the device not only avoids measuring errors caused by plugging tightness of the feeler, but also can reduce measuring errors caused by equipment factors such as protrusion of a magnetic pole damping ring, protrusion of a stator screen bolt and the like in the measuring process; simultaneously, this device utilizes two sliders to realize the overlap joint of two measuring blocks, and the overlap joint position accessible slider is adjusted, consequently, has still reduced the error that the overlap joint skew caused.
As shown in fig. 1 to 3, the measurement device for a rotor air gap provided in the first aspect of the present embodiment may include, but is not limited to: a first measuring block 10, a second measuring block 20 and a measuring ruler 30.
In this embodiment, in order to guarantee that first measuring block 10 and second measuring block 20 can realize the overlap joint measurement, set up first measuring block 10 and second measuring block 20 is the right trapezoid structure, and above-mentioned structure can be guaranteed when measuring, makes two measuring blocks can hug closely on hydroelectric set's central line outer wall, guarantees measurement accuracy.
Meanwhile, in order to ensure that the first measuring block 10 and the second measuring block 20 can be mutually reversely overlapped, the length of the top surface of the first measuring block 10 is set to be greater than that of the bottom surface, the length of the top surface of the second measuring block 20 is set to be less than that of the bottom surface, and the slopes of the inclined edges of the first measuring block 10 and the second measuring block 20 are the same; as shown in FIG. 1, the first measuring block 10 and the second measuring block 20 can be inverted to each other by the design, and the slope of the inclined sides is the same, so that the inclined angles of the inclined sides of the two measuring blocks can be ensured to be the same, and the two measuring blocks can be conveniently lapped.
In the present embodiment, the first measuring block 10 and the second measuring block 20 are illustrated as being the same in size, so as to achieve accurate measurement.
In this embodiment, for example, the first measuring block 10 and the second measuring block 20 can be made of, but not limited to, carbon steel, stainless steel or iron; in this embodiment, it is preferably made of carbon steel.
In this embodiment, the structure for realizing the overlapping of the first measuring block 10 and the second measuring block 20 is as follows:
as shown in fig. 2, a first sliding block 40 is disposed on the inclined surface of the first measuring block 10, wherein the first sliding block 40 is parallel to the inclined surface of the first measuring block 10, an overlapping gap is formed between the first sliding block 40 and the first measuring block 10, and an opening of the overlapping gap is located at a top end of the inclined surface of the first measuring block 10.
Meanwhile, the inclined plane of the second measuring block 20 is arranged opposite to the inclined plane of the first measuring block 10, and a second sliding block 50 matched with the first sliding block 40 is arranged on the inclined plane of the second measuring block 20, wherein the second sliding block 50 is parallel to the first sliding block 40, and the second sliding block 50 is overlapped on the first sliding block 40 after being inserted into the overlapping gap from the opening.
As shown in fig. 2, when measuring, the second slide block 50 can be overlapped on the first slide block 40 only by inserting the second slide block into the overlapping gap through the opening, thereby completing the overlapping of the first measuring block 10 and the second measuring block 20; therefore, through the lap joint structure, the measurement error caused by equipment factors such as the protrusion of the magnetic pole damping ring and the protrusion of the stator screen bolt in the water turbine generator set can be reduced.
Meanwhile, the two measuring blocks are lapped through the sliding blocks on the inclined surfaces of the two measuring blocks, so that lapping of different positions of the two measuring blocks can be realized by utilizing the length of the sliding blocks, and the lapping positions of the two measuring blocks can be adjusted so as to carry out accurate measurement.
In addition, in order to ensure that the measurement can be directly performed after the first measuring block 10 and the second measuring block 20 are lapped, the measuring scales 30 are respectively arranged on the side walls of the first measuring block 10 and the second measuring block 20 opposite to the inclined plane; therefore, the structure enables the feeler not to be plugged in during measurement, and measurement errors caused by plugging tightness of the feeler are avoided.
In the present embodiment, the length of the exemplary measuring ruler 30 is the same as the height of the first measuring block 10 and/or the second measuring block 20, and may be, but is not limited to, fixed on the first measuring block 10 and the second measuring block 20 by using an adhesive method.
Therefore, through the measuring device of the rotor air gap described in the foregoing, the utility model discloses an adopt two measuring blocks to cooperate each other, namely the second slider 50 overlap joint on the second measuring block 20 is on the first slider 40 of the first measuring block 10, make the two overlap joint in pairs, and be provided with the dipperstick 30 on the both lateral walls relative to inclined plane respectively, so, the utility model discloses can directly measure through the dipperstick 30 after two measuring blocks overlap joint are finished, and need not to fill in the clearance gauge; therefore, compared with the traditional wedge-shaped block, the measuring error caused by equipment factors such as the protrusion of a magnetic pole damping ring, the protrusion of a stator screen enclosing bolt and the like and human factors such as the plugging tightness of a feeler gauge in the measuring process is reduced; in addition, the overlap joint position accessible first slider 40 and the second slider 50 of first measuring block 10 and second measuring block 20 are adjusted, consequently, can realize the overlap joint location of two measuring blocks when measuring to guarantee to reach the best measuring position, compare in traditional wedge measurement promptly, the utility model discloses can avoid the error that the overlap joint skew caused.
As shown in fig. 1 and 2, one of the mounting structures of the first slider 40 and the second slider 50 is provided as follows:
in this embodiment, for example, one end of the first sliding block 40 is fixed at the bottom end of the inclined plane of the first measuring block 10 through a first connecting block 60; as can be seen from fig. 1 and 2, the first connecting block can ensure that the first sliding block 40 is parallel to the first measuring block 10, and at the same time, the first connecting block can form the overlapping gap between the first sliding block and the first measuring block, and the overlapping gap is used for inserting the second sliding block 50.
Similarly, in order to overlap the first sliding block 40 and the second sliding block 50, one end of the second sliding block 50 needs to be fixed on the top end of the inclined surface of the second measuring block 20 through the second connection block 70, that is, as shown in fig. 1 and fig. 2, the second connection block 80 can ensure that the second sliding block 50 is parallel to the first sliding block 40, and at the same time, an overlapping gap is formed between the inclined surfaces of the second sliding block 50 and the second measuring block 20, so that the first sliding block 40 and the second sliding block 50 can be overlapped by extending into the two gaps.
In the present embodiment, for example, the first connecting block 70 may be, but is not limited to, welded to connect the first sliding block 40 and the first measuring block 10; similarly, the second connecting block 80 can also be connected by welding.
As shown in fig. 1, in this embodiment, in order to increase the adjustment range of the overlapping positions of the two measuring blocks, the length of the first sliding block 40 is set to be equal to the length of the inclined surface of the first measuring block 10, and the length of the second sliding block 50 is set to be equal to the length of the inclined surface of the second measuring block 20; through the design, the adjusting range of the lap joint positions of the two measuring blocks can be enlarged, so that the measuring device can be suitable for measuring water-turbine generator sets of different models.
In the present embodiment, in order to facilitate the movement of the first measuring block 10 and the second measuring block 20 on the two sliding blocks, operation handles 80 are further respectively disposed on the top surfaces of the first measuring block 10 and the second measuring block 20; through the design, the two measuring blocks can be conveniently moved by a measuring person, so that the lap joint position can be conveniently adjusted, and the use convenience is improved.
As shown in fig. 1 and 2, one of the structures of the operating handle 80 is provided as follows:
as shown in fig. 1, in the present embodiment, the operation handle 80 may include, but is not limited to: a connecting rod 81 and a lifting cap 82, wherein one end of the connecting rod 81 is fixedly connected with the lifting cap 82, and the other end of the connecting rod 81 is fixed on the top surface of the first measuring block 10; therefore, when measuring, a measurer can lift and pull the two measuring blocks through the lifting cap 82, and therefore the adjustment of the lap joint position is achieved.
In this embodiment, the example connecting rod 81 can be, but is not limited to, threaded onto the top surface of the first measuring block 10.
In this embodiment, the exemplary measuring ruler 30 can be but is not limited to a graduated scale, and by using the graduated scale, the reading can be accurately and quickly measured, so that the convenience of measurement is improved.
To sum up, the utility model discloses a working process does:
as shown in fig. 3, the first step is: measuring two bottom edges (in the embodiment, the long edge is L1, and the short edge is L2) and the height H of any measuring block; from the data, the wedge change rate of any measuring block is calculated to be L1-L2/H.
The second step is that: the first measuring block 10 on the left side in the figure 3 is inserted into the air gap of the stator and the rotor of the water-turbine generator set and is tightly attached to the outer wall of the central line of the magnetic pole.
Thirdly, the second measuring block 20 at the right side in fig. 3 is inserted, that is, the sliding rails of the two measuring blocks are symmetrically overlapped.
The fourth step: the two measuring blocks are overlapped and wedged tightly without deflection by operating the handle 80 and tightly cling to the air gap.
The fifth step: Δ L was calculated from the post-lap height Δ h (shown in fig. 3), where the air gap value was 2L1- Δ L.
And a sixth step: the two measuring blocks are withdrawn from each other by operating the handle 80, and the measurement is completed.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rotor air gap measurement device, comprising: a first measuring block (10), a second measuring block (20) and a measuring scale (30);
the first measuring block (10) and the second measuring block (20) are both of right-angled trapezoid structures, wherein the length of the top surface of the first measuring block (10) is greater than that of the bottom surface, the length of the top surface of the second measuring block (20) is less than that of the bottom surface, and the slopes of the oblique sides of the first measuring block (10) and the second measuring block (20) are the same;
the side walls of the first measuring block (10) and the second measuring block (20) opposite to the inclined plane are respectively provided with the measuring scale (30);
a first sliding block (40) is arranged on the inclined surface of the first measuring block (10), wherein the first sliding block (40) is parallel to the inclined surface of the first measuring block (10), an overlapping gap is formed between the first sliding block (40) and the first measuring block (10), and the opening of the overlapping gap is positioned at the top end of the inclined surface of the first measuring block (10);
the inclined plane of second measuring block (20) with the inclined plane of first measuring block (10) sets up relatively, be provided with on the inclined plane of second measuring block (20) with first slider (40) matched with second slider (50), wherein, second slider (50) with first slider (40) are parallel, just second slider (50) are inserted from the opening behind the overlap joint clearance, the overlap joint is in on first slider (40).
2. A rotor air gap measuring device according to claim 1, characterized in that the length of the measuring ruler (30) is the same as the height of the first measuring block (10) and/or the second measuring block (20).
3. A rotor air gap measuring device according to claim 1, wherein one end of the first slider (40) is fixed to the bottom end of the inclined surface of the first measuring block (10) by a first connecting block (60), so that the lap gap is formed between the first slider (40) and the inclined surface of the first measuring block (10);
one end of the second sliding block (50) is fixed at the top end of the inclined plane of the second measuring block (20) through a second connecting block (70), so that the second sliding block (50) is parallel to the first sliding block (40).
4. A rotor air gap measuring device according to claim 1, characterized in that the length of the first slider (40) is equal to the length of the slope of the first measuring block (10), and the length of the second slider (50) is equal to the length of the slope of the second measuring block (20).
5. A rotor air gap measuring apparatus as claimed in claim 1, wherein the first measuring block (10) and the second measuring block (20) are provided with operating handles (80) on top surfaces thereof, respectively.
6. A rotor air gap measuring device according to claim 5, characterized in that the operating handle (80) comprises a connecting rod (81) and a lifting cap (82), wherein one end of the connecting rod (81) is fixedly connected with the lifting cap (82), and the other end of the connecting rod (81) is fixed on the top surface of the first measuring block (10).
7. A rotor air gap measuring device according to claim 6, characterized in that the other end of the connecting rod (81) is screwed to the top surface of the first measuring block (10).
8. A rotor air gap measuring device as claimed in claim 1, wherein two of said measuring tapes (30) are respectively attached to the side walls of said first measuring block (10) and said second measuring block (20) opposite to the inclined plane.
9. A rotor air gap measuring device as claimed in claim 1, characterized in that said measuring ruler (30) is a graduated scale.
10. A rotor air gap measuring device according to claim 1, characterized in that the first measuring block (10) and the second measuring block (20) are made of carbon steel, stainless steel or iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532829.8U CN215003363U (en) | 2021-07-06 | 2021-07-06 | Rotor air gap measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532829.8U CN215003363U (en) | 2021-07-06 | 2021-07-06 | Rotor air gap measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215003363U true CN215003363U (en) | 2021-12-03 |
Family
ID=79102647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121532829.8U Active CN215003363U (en) | 2021-07-06 | 2021-07-06 | Rotor air gap measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215003363U (en) |
-
2021
- 2021-07-06 CN CN202121532829.8U patent/CN215003363U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206540510U (en) | Measure the verifying attachment of two line slideway depth of parallelisms | |
| CN102042794A (en) | Taper detection device | |
| CN215003363U (en) | Rotor air gap measuring device | |
| CN202869717U (en) | Absolute stress detection apparatus for prestressed concrete bridge | |
| CN103148761B (en) | Impact type waterturbine wheel and nozzle relative position measurement structure | |
| CN103499742B (en) | Reduce because of the method for signal amplitude variation on high-precision phase measurement impact | |
| CN204831167U (en) | Measurement device for whole curved surface of thing is leveled in accurate measurement | |
| CN207365853U (en) | A kind of frock of quick measuring transformer appearance and size | |
| CN114030394A (en) | Subway contact net full-parameter trackless measurement construction method | |
| CN206695703U (en) | A kind of track installation chi for Automatic ultrasonic testing | |
| CN211904065U (en) | Laser centering instrument calibration equipment for displaying error value | |
| CN209639661U (en) | A kind of metal aluminium sheath internal diameter measuring instrument | |
| CN207066308U (en) | A kind of spliced clearance measurement tool | |
| CN203231728U (en) | Multidirectional right angle rapid measuring device | |
| CN207066310U (en) | A kind of clearance measurement tool | |
| CN213657681U (en) | Contact rail geometric parameter measuring scale based on vernier precision | |
| CN114790670B (en) | Magnetic levitation contact rail parameter measurement equipment and method | |
| CN212614883U (en) | Positioning template for determining diameter convergence measuring point position of subway tunnel | |
| CN104034235A (en) | Gauge and method for measuring real rolling reduction of heavy rail straightening machine | |
| CN217358310U (en) | Precision gear machining detection device | |
| CN215909808U (en) | Non-contact measuring instrument for geometric dimension of electrical equipment | |
| CN109900187A (en) | A kind of cast member wall thickness special measurement device | |
| CN103673824A (en) | Double-base weld bead height measuring scale and method | |
| CN215598279U (en) | Fixture for accurately measuring diameter of pier stud finished product reinforcement cage | |
| CN205426031U (en) | Electric smelting pipe connector mouth length measurement and recorder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |