CN117367244A - Turbine bearing clearance measuring tool and method - Google Patents
Turbine bearing clearance measuring tool and method Download PDFInfo
- Publication number
- CN117367244A CN117367244A CN202311608864.7A CN202311608864A CN117367244A CN 117367244 A CN117367244 A CN 117367244A CN 202311608864 A CN202311608864 A CN 202311608864A CN 117367244 A CN117367244 A CN 117367244A
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- China
- Prior art keywords
- bearing clearance
- connecting rod
- bolt
- dial indicator
- clamp splice
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- 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.)
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Links
- 238000000034 method Methods 0.000 title abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a turbine bearing clearance measuring tool and a turbine bearing clearance measuring method, which relate to the technical field of industrial mechanical engineering and comprise a dial indicator, wherein a dial indicator clamping block is arranged on the dial indicator, the dial indicator clamping block is connected with a second connecting rod, a steering block is arranged on the second connecting rod, the steering block is connected with a first connecting rod, the first connecting rod is connected with a first clamping block, a first bolt is arranged on the first clamping block, a second clamping block is arranged on the first clamping block, and a first bolt is arranged on the second clamping block. According to the invention, the accuracy of measurement is improved by installing the dial indicator, so that the actual state of the turbine bearing can be known more accurately; during bearing clearance measurement, a spherical cushion block and an adjusting cushion block on the shell are not required to be removed, and the operation is simple; by tightening and loosening the shoe tensioning bolts, the tool table can automatically measure the movement distance of the shoe when the pull-push shoe moves up and down, and errors caused by reinstallation after disassembly are reduced.
Description
Technical Field
The invention belongs to the technical field of industrial mechanical engineering, and particularly relates to a turbine bearing clearance measuring tool and a turbine bearing clearance measuring method.
Background
When the tilting pad bearing of the steam turbine is overhauled, after the spherical cushion block and the spherical cushion block of the bearing are required to be removed completely, a vernier depth gauge is inserted into a shell measuring hole for measurement, and the measuring method has the following problems in the measuring process, so that the bearing clearance is inaccurate in measurement, the measuring workload is large, and the method is concretely as follows:
1. when the tilting pad bearing of the steam turbine is measured, the measurement is mainly carried out by a vernier depth scale, the precision of the vernier depth scale is insufficient, the reading precision value of the vernier depth scale is 0.02mm, and the manual measurement error is large;
2. due to the fact that burrs are easy to collide when the spherical cushion blocks and the spherical gaskets are removed when the tilting pad bearing of the steam turbine is measured, and the spherical gaskets are easy to be misplaced, the gap of the bearing cover is changed, and the workload of re-measuring the gap at the top of the bearing is increased;
3. due to the mode, when the tilting pad bearing of the steam turbine is measured, the copper bar for the spherical cushion block needs to be disassembled, the supporting pin and the cushion block are knocked down through the measuring hole, and the lowest point position is not reached, so that inaccurate measurement is caused.
Disclosure of Invention
The invention mainly aims to provide a turbine bearing clearance measuring tool and a turbine bearing clearance measuring method, which can effectively solve the problems in the background technology.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a steam turbine bearing clearance measuring tool, includes the percentage table, install the percentage table clamp splice on the percentage table, the second connecting rod is connected to the percentage table clamp splice, install on the second connecting rod and turn to the piece, turn to the piece and connect the head rod, the head rod is connected the head rod, install first bolt on the head rod, install the second clamp splice on the head rod, install first bolt on the second clamp splice.
Further, the dial indicator passes through the opening on the dial indicator clamping block and is fixed through the second bolt.
Further, the dial indicator clamp splice is connected to second connecting rod one end, and the steering block is connected to the other end, and all adopts first bolt fastening.
Further, one end of the first connecting rod is connected with the steering block and is fixed by a first bolt.
A turbine bearing clearance measurement method comprises the following steps:
step one: during measurement, a first bolt at the bottom of the bearing clearance measuring device is arranged on a hanging ring hole on the tilting pad,
step two: adjusting the dial indicator to enable the pointer to be arranged on the shell at the middle position of the front end and the rear end of the spherical cushion block;
step three: the two tile lifting bolts are completely unscrewed, the contact of the tiles on the axle journal is confirmed by using a feeler gauge, and the two dial indicators are adjusted and the readings are recorded;
step four: synchronously screwing two tile lifting bolts, so that the tiles are pulled up in parallel, recording the readings of two dial indicators when the tightening degree of the lifting bolts reaches a set threshold value, and repeatedly measuring until the measured value is constant;
step five: the small value is subtracted from the large value of the same dial indicator, and the difference obtained by subtracting the two dial indicators is added and divided by two, so that the obtained value is the bearing clearance.
The invention has the following beneficial effects:
1. by installing the dial indicator, the measurement accuracy is improved, and the actual state of the turbine bearing can be known more accurately;
2. when the device is used for measuring the bearing clearance, a spherical cushion block and an adjusting cushion block on the shell are not required to be removed, and the operation is simple;
3. by tightening and loosening the shoe tensioning bolts, the tool table can automatically measure the movement distance of the shoe when the pull-push shoe moves up and down, and errors caused by reinstallation after disassembly are reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of a turbine bearing clearance measurement tool according to the present invention;
FIG. 2 is a schematic view of the rear structure of the turbine bearing clearance measurement tool of the present invention;
in the figure: 1. a dial indicator; 2. dial gauge clamping blocks; 3. a second connecting rod; 4. a steering block; 5. a first connecting rod; 6. a second clamping block; 7. a first bolt; 8. a first clamping block; 9. and a second bolt.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The electrical components and the power supply adapted to the electrical components should be connected by wires by a person skilled in the art, and a suitable controller should be selected according to practical situations to meet control requirements, specific connection and control sequence, and the electrical connection should be completed by referring to the following working principles in order of working among the electrical components, and the detailed connection means are known in the art, and the following main description of the working principles and processes will not be provided for the description of electrical control.
Examples
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides a steam turbine bearing clearance measuring tool, includes percentage table 1, install percentage table clamp splice 2 on the percentage table 1, second connecting rod 3 is connected to percentage table clamp splice 2, install on the second connecting rod 3 and turn to piece 4, turn to piece 4 and connect head rod 5, head rod 5 connects first clamp splice 8, install first bolt 7 on the first clamp splice 8, install second clamp splice 6 on the first clamp splice 8, install first bolt 7 on the second clamp splice 6.
Further, the dial indicator 1 passes through the hole on the dial indicator clamping block 2 and is fixed through the second bolt 9.
Further, the dial indicator clamp splice 2 is connected to second connecting rod 3 one end, and the steering block 4 is connected to the other end, and all adopts first bolt 7 to fix.
Further, one end of the first connecting rod 5 is connected with the steering block 4 and is fixed by a first bolt 7.
A turbine bearing clearance measurement method comprises the following steps:
step one: during measurement, a first bolt 7 at the bottom of the bearing clearance measuring device is arranged on a hanging ring hole on the tilting pad,
step two: adjusting the dial indicator 1 to enable the pointer to be arranged on the shell at the middle position of the front end and the rear end of the spherical cushion block;
step three: the two tile lifting bolts are completely unscrewed, the contact of the tiles on the axle journal is confirmed by using a feeler gauge, and the two dial indicators 1 are adjusted and the readings are recorded;
step four: synchronously screwing two tile lifting bolts, so that the tiles are pulled up in parallel, recording the readings of two dial indicators 1 when the tightening degree of the lifting bolts reaches a set threshold value, and repeatedly measuring until the measured value is constant;
step five: the bearing clearance is obtained by subtracting a small value from the large value of the same percentage table 1 and dividing the sum of the subtracted differences of the two percentage tables 1) by two.
In the invention, the first bolt 7 adopts an M8 bolt, and the second bolt 9 adopts an M6 bolt; a first clamping block 8 and a second clamping block 6 are arranged on a hanging ring hole of the upper half pad of the bearing, and a first bolt 7 is screwed on; a first connecting rod 5 is arranged on a hole in the middle of the clamping block, a steering block 4 is arranged on the upper part of the first connecting rod 5, and the clamping block is tightly pressed by a first bolt 7; the second connecting rod 3 is arranged in the horizontal direction of the steering block 4 and is tightly pressed by the first bolt 7; the other end of the second connecting rod 3 is provided with a dial indicator clamping block 2 which is tightly pressed by a first bolt 7; a dial indicator 1 is arranged on the dial indicator clamping block 2 in the vertical direction, the pointer of the dial indicator 1 is downward, and the dial indicator 1 is tightly pressed by a second bolt 9; and adjusting the dial indicator 1 to enable the pointer to be arranged on the shell at the middle position of the front end and the rear end of the spherical cushion block, and checking that the dial indicator 1 is in an effective stroke.
According to the invention, the electronic digital display dial indicator is arranged on the measuring tool, the electronic digital display dial indicator adopts the 32BFF12 type high-precision electronic digital display dial indicator produced by Deqingsheng Tai core electronic technology Co-Ltd, the precision of the electronic digital display dial indicator is +/-0.01 mm, and the diameter of the shaft sleeve is 8mm, so that the precision of measurement can be improved to the level of 0.01mm by using the electronic digital display dial indicator, the electronic data equipment can provide a high-precision measuring result, the error range is small, the gap can be ensured to be within the specified range, and the mechanical fault risk caused by overlarge or overlarge gap is reduced.
The invention is used as a tool and a method for measuring the clearance of the turbine bearing, and the accuracy of measurement is improved by installing the dial indicator, so that the actual state of the turbine bearing can be known more accurately; when the device is used for measuring the bearing clearance, a spherical cushion block and an adjusting cushion block on the shell are not required to be removed, and the operation is simple; by tightening and loosening the shoe tensioning bolts, the tool table can automatically measure the movement distance of the shoe when the pull-push shoe moves up and down, and errors caused by reinstallation after disassembly are reduced.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a steam turbine bearing clearance measuring tool, includes percentage table (1), its characterized in that: install percentage table clamp splice (2) on percentage table (1), second connecting rod (3) are connected to percentage table clamp splice (2), install on second connecting rod (3) and turn to piece (4), turn to piece (4) and connect head rod (5), head rod (5) connect first clamp splice (8), install first bolt (7) on first clamp splice (8), install second clamp splice (6) on first clamp splice (8), install first bolt (7) on second clamp splice (6).
2. The turbine bearing clearance measurement tool of claim 1, wherein: the dial indicator (1) passes through the opening on the dial indicator clamping block (2) and is fixed through the second bolt (9).
3. The turbine bearing clearance measurement tool of claim 1, wherein: one end of the second connecting rod (3) is connected with the dial indicator clamping block (2), the other end of the second connecting rod is connected with the steering block (4), and the second connecting rod and the steering block are fixed by the first bolt (7).
4. The turbine bearing clearance measurement tool of claim 1, wherein: one end of the first connecting rod (5) is connected with the steering block (4) and is fixed by a first bolt (7).
5. The turbine bearing clearance measurement method is characterized by comprising the following steps of:
step one: during measurement, a first bolt (7) at the bottom of the bearing clearance measuring device is arranged on a hanging ring hole on the tilting pad;
step two: adjusting the dial indicator (1) to enable the pointer to be arranged on the shell at the middle position of the front end and the rear end of the spherical cushion block;
step three: the two tile lifting bolts are completely unscrewed, the contact of the tiles on the axle journal is confirmed by using a feeler gauge, and the two dial indicators (1) are adjusted and the readings are recorded;
step four: synchronously screwing two tile lifting bolts, so that the tiles are pulled up in parallel, recording the readings of two dial indicators (1) when the tightening degree of the lifting bolts reaches a set threshold value, and repeatedly measuring until the measured value is constant;
step five: subtracting a small value from a large value of the same dial indicator (1), and dividing the subtracted difference of the two dial indicators (1) by two to obtain a value which is the bearing clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608864.7A CN117367244A (en) | 2023-11-29 | 2023-11-29 | Turbine bearing clearance measuring tool and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608864.7A CN117367244A (en) | 2023-11-29 | 2023-11-29 | Turbine bearing clearance measuring tool and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117367244A true CN117367244A (en) | 2024-01-09 |
Family
ID=89404382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311608864.7A Pending CN117367244A (en) | 2023-11-29 | 2023-11-29 | Turbine bearing clearance measuring tool and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117367244A (en) |
-
2023
- 2023-11-29 CN CN202311608864.7A patent/CN117367244A/en active Pending
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