CN106152993A - A kind of through-flow survey tool of steam turbine - Google Patents
A kind of through-flow survey tool of steam turbine Download PDFInfo
- Publication number
- CN106152993A CN106152993A CN201610638324.7A CN201610638324A CN106152993A CN 106152993 A CN106152993 A CN 106152993A CN 201610638324 A CN201610638324 A CN 201610638324A CN 106152993 A CN106152993 A CN 106152993A
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- China
- Prior art keywords
- head
- lever
- steam turbine
- survey tool
- rotor
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Turbines (AREA)
Abstract
A kind of through-flow survey tool of steam turbine, including drawing article, measures head and power supply supply and digital display module, and described measurement head includes: body, be arranged on body end measure head and the inductive head of spacing of rotor, lever assembly based on laser distance measuring principle；Described inductive head and described power supply supply and digital display module are connected by transmission cable, described drawing article and one end away from described inductive head of body removably connect to pull whole measurement head to move in packing conduit to be measured, and described lever assembly is rotatably supported at the both sides of body to measure head constant to the distance of packing channel floor in moving process in packing conduit.The present invention can be directly realized by the through-flow measurement of steam turbine, it is not necessary to lifting rotor, simple to operate, measurement data can be supplied by power supply and digital display module intuitively shows；Further, adjust pad by being equipped with, go for different size of steam turbine.
Description
Technical field
The present invention relates to steam turbine for nuclear power station field, particularly relate to a kind of through-flow survey tool of steam turbine.
Background technology
Power plant needs packing, dividing plate and flow passage component are carried out accurate measurement in steam turbine installation, maintenance process, it is ensured that
On partition board of steam turbine, the center of stator blade to the center of moving vane on rotor, and can make diaphragm gland obtain uniform gap.
In order to improve the efficiency of unit and ensure its safe operation, through-flow gap will be measured and adjust during the overhaul of power plant
Whole, this is a precision and hard work.
At present in nuclear power plant, the method that normally used measurement is through-flow includes dummy shaft method, pressing lead wires, clearance gauge hand dipping
Etc. method.Dummy shaft method, dummy shaft is generally individually formed by heavy wall pipe car system, and the pipe being relatively large in diameter is loaded onto at two ends, and car becomes and axle journal
Identical diameter, in order to be supported on bearing shell, dummy shaft can also be supported in special false bearings, but such as bearing bush abrasion or displacement
Measurement data, false bearings complex manufacturing technology will be affected, add that dummy shaft there is also quiet winding degree, cause the through-flow number that dummy shaft method records
According to the most accurate.Pressing lead wires and clearance gauge manual measurement method need repeatedly to lift by crane rotor, and operating risk is high, galvanized wire thickness after pressurized
Change need hand dipping, data processing amount is huge, bothersome arduously.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that a kind of steam turbine is through-flow
Survey tool.
The technical solution adopted for the present invention to solve the technical problems is: it is through-flow that structure the invention discloses a kind of steam turbine
Survey tool, for measuring steam turbine is through-flow, including drawing article, measures head and power supply supply and digital display module, described
Measurement head includes: body, be arranged on the sense of the spacing measuring head and rotor based on laser distance measuring principle of body end
Answer head, lever assembly；Described inductive head and described power supply supply and digital display module are connected by transmission cable, described drawing article with
One end away from described inductive head of body removably connects to pull whole measurement head to move in packing conduit to be measured, institute
State lever assembly and be rotatably supported at the both sides of body so that measurement head arrives packing conduit in packing conduit in moving process
The distance of bottom is constant.
In the through-flow survey tool of steam turbine of the present invention, described lever assembly includes: U-shaped lever, two L-types
Lever extension arm, two contact screws；
U-shaped lever is made up of the lever linking arm of two lever sidewalls and two lever sidewalls of connection, two lever sides
Wall is rotatably supported at the left and right side of body, the side away from rotor of lever linking arm and the end towards rotor of body
Connected by arm spring between face；Each lever extension arm includes long-armed and galianconism, two long-armed respectively with two lever sides
Wall connects side by side, every galianconism is installed a contact screw, and the head of contact screw is from the side towards rotor of galianconism
Exposed out.
In the through-flow survey tool of steam turbine of the present invention, described lever assembly also includes and described lever extension arm
The adjustment pad of bar shaped coordinated, described adjustment pad described lever sidewall and described long-armed between, lever sidewall, adjustment
Pad, long-armed it is connected by screw.
In the through-flow survey tool of steam turbine of the present invention, also include that tape measure pulls sheet and head stator, tape measure
Pull that an installing hole is offered at the two ends of sheet respectively, one for connecting the connection through hole of drawing article, the center of head stator
Offering installing hole, the bottom surface away from rotor of the end of described body offers installing hole；Tape measure is pullled sheet and is held on head
Between stator and body, and tape measure to pull the bearing of trend of sheet vertical with the bearing of trend of head stator, head stator,
Tape measure pulls the installing hole of sheet and body just to setting, by a screw, head stator, tape measure is pullled sheet and is fixed on
On body.
In the through-flow survey tool of steam turbine of the present invention, described drawing article is tape measure.
Implement the through-flow survey tool of steam turbine of the present invention, have the advantages that the through-flow survey of steam turbine of the present invention
Amount can directly utilize drawing article and pull whole measurement head to move in packing conduit to be measured, and in moving process, inductive head can
To measure packing conduit diverse location and rotor distance, and then realize the through-flow measurement of steam turbine, it is not necessary to lifting rotor, operation letter
Single, measurement data can be supplied by power supply and digital display module intuitively shows；Further, adjust pad by being equipped with, permissible
It is applicable to different size of steam turbine.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the through-flow survey tool of steam turbine of the present invention；
Fig. 2 is the structural representation of body in Fig. 1；
Fig. 3 is the structural representation that the through-flow survey tool of steam turbine of the present invention coordinates with packing conduit；
Fig. 4 is the use schematic diagram adjusting pad of the through-flow survey tool of steam turbine of the present invention；
Fig. 5 is the work process schematic diagram of the through-flow survey tool of steam turbine of the present invention.
Detailed description of the invention
In order to be more clearly understood from the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The detailed description of the invention of the present invention.
It it is the structural representation of the through-flow survey tool of steam turbine of the present invention with reference to Fig. 1-2, Fig. 1；Fig. 2 is body in Fig. 1
Structural representation.
The through-flow survey tool of steam turbine of the present invention, is measured by laser distance measuring principle between packing conduit rotor
Distance.It includes following structure: drawing article 3, measure 1 and power supply supply and digital display module 2.
Drawing article 3, for pulling whole measurement 1 to move in packing conduit to be measured, to measure various location
Through-flow.In being embodied as, drawing article 3 uses tape measure to realize, naturally it is also possible to use other to have certain rigidity and flexible
Product substitutes, and not limits this.
Power supply supply and digital display module 2, mainly for measuring a 1 offer power supply, and the number of degrees are measured in display in real time.
Highlight structure and the measuring principle of measurement 1 below.
With reference to Fig. 1, measurement 1 specifically includes that body 11, is arranged on measuring based on laser distance measuring principle of body 11 end
Measurement 1 and the inductive head 12 of spacing of rotor, lever assembly.
Wherein, described inductive head 12 and described power supply supply and digital display module 2 are connected by transmission cable 21, described in pull
Part 3 removably connects to pull whole measurement 1 at packing groove to be measured with one end away from described inductive head 12 of body 11
Moving in road, described lever assembly is rotatably supported at the both sides of body 11 so that measurement 1 is moved through in packing conduit
In journey, the distance to packing channel floor is constant.
With reference to Fig. 2, in a specific embodiment, body 11 includes the U-shaped main part 113 of cross section, is positioned at main part
Two load receiving parts 111,112 at 113 two ends.The end of the close load receiving part 111 of main part 113 arranges inductive head 12, main part
The end of the close load receiving part 112 of 113 connects drawing article 3.Offer through hole 1120 on load receiving part 112, be used for lever group is installed
Part.
Certainly, the shape of body 11 designs according to packing conduit, however it is not limited to shape and structure shown in Fig. 2.
With continued reference to Fig. 1, the connection that drawing article 3 is described below realizes.
In specific embodiment, steam turbine is through-flow survey tool also includes tape measure pulls sheet 16 and substantially head in bar shaped are solid
Stator 17, tape measure pull the two ends of sheet 16 offer respectively an installing hole, one for connecting the connection through hole 161 of drawing article 3,
The center of head stator 17 offers installing hole, the end (i.e. load receiving part 112 in Fig. 2) of described body 11 away from rotor
Bottom surface offer installing hole；Tape measure is pullled sheet 16 and is held between head stator 17 and body 11, and sheet 16 pullled by tape measure
Bearing of trend vertical with the bearing of trend of head stator 17, head stator 17, tape measure pull sheet 16 and body 11
Installing hole just to setting, will coordinate with these installing holes head stator 17, tape measure are pullled sheet 16 admittedly by a screw
It is scheduled on body 11.
With continued reference to Fig. 1, the concrete structure of lever assembly is described below.
Described lever assembly includes: 14, two contact screws 15 of lever extension arm of U-shaped 13, two L-types of lever, preferably
, also include the adjustment pad 19 of the bar shaped coordinated with described lever extension arm 14.Adjust pad 19 and comprise various thickness, use
Time according to the adjustment pad 19 of the specifically chosen suitable thickness of width of packing conduit.
U-shaped lever 13 is made up of the lever linking arm of two lever sidewalls and two lever sidewalls of connection, two levers
Sidewall is connected through the hinge and is rotatably supported at the left and right side of body 11, such as the left and right sides of the load receiving part 112 in Fig. 2.Lever
It is connected by arm spring 18 between side away from rotor and the end face towards rotor of body 11 of linking arm, instantiation
Middle arm spring 18 is arranged on lever linking arm and tape measure is pullled between sheet 16.
The lever extension arm 14 of each L-type includes long-armed and galianconism, and two long-armed passes through pin with two lever sidewalls respectively
Nail connects side by side, every galianconism installs a contact screw 15, and the head of contact screw 15 from galianconism towards rotor
Side is exposed out.
When packing conduit size is bigger, need described lever sidewall and described long-armed between increase adjust pad 19.
When needs use described adjustment pad 19, then first lever extension arm 14 can be disassembled from lever sidewall, then lead to
Cross screw by lever sidewall, adjust pad 19, long-armed link together.
Visible, the parts of the present invention are the most fairly simple, it is easy to process, change, be of value to shortening the steam turbine overhaul duration,
Reduce cost.
Operation principle below in conjunction with Fig. 3-4 explanation present invention.
The structural representation coordinated with packing conduit with reference to the through-flow survey tool of steam turbine that Fig. 3 is the present invention；Fig. 4 is this
The use schematic diagram adjusting pad of the through-flow survey tool of steam turbine of invention.
With reference to Fig. 3, when the present invention coordinates with turbine steam seal conduit, before measuring by U-shaped lever 13 and the lever of L-type
Extension arm 14 is down pressed so that whole survey tool is inserted in packing groove, and according to lever principle, one, lever is downward, the most separately
One is upturned, now due to the lever linking arm of U-shaped lever 13 by arm spring 18 be downwards shown in Fig. 1 away from
Tape measure pulls one end away from contact screw 15 of the elastic force in the direction of sheet 16, i.e. lever sidewall by downward active force, because of
One end of the close contact screw 15 of this lever sidewall is the most necessarily by tip-tilted active force, and this active force ensure that contact
Screw 15 contacts with packing groove outer surface all the time, and additionally the both sides of body 11 contact with the upper conduit of packing conduit, so can protect
Card measure 1 in packing conduit the relative invariant position of exercise sessions and turbine rotor, it is ensured that the reading standard of inductive head 12
Really.
With reference to Fig. 4, when turbine steam seal channel floor has pin hole 30, U-shaped lever 13 is formed with lever extension arm 14
Overall width inadequate, be easily caused measurement 1 bite, therefore can extend with lever at the lever sidewall of U-shaped lever 13
Increase between arm 14 and adjust pad 19.
Below in conjunction with Fig. 5, introduce the use process of the present invention.It is the through-flow survey tool of steam turbine of the present invention with reference to Fig. 5
Work process schematic diagram.
As it can be seen, 40 expression turbine rotor in figure, work process is as follows: first, and tape measure is inserted into packing conduit
Interior right side, pulls out from left side around conduit；Then at left side clip, the tape measure of measurement 1 is pullled sheet 16 by groove and tape measure
It is secured together；Push down the lever linking arm of the U-shaped lever 13 of measurement 1, make measurement 1 be inserted in packing conduit；Use
Tape measure moves measurement 1 the 3 o'clock position of right side to, as shown in A1 in figure, uses measurement 1 coarse adjustment to use power supply micro-zero-sum
Adjust；Use transmission cable 21 by measuring the 16 o'clock direction reading the most reversely moving bottom to, as shown in A2 in figure；To survey again
Amount 1 moves the 9 o'clock direction reading in left side to, as shown in A3 in figure.
Implement the through-flow survey tool of steam turbine of the present invention, have the advantages that the through-flow survey of steam turbine of the present invention
Amount can directly utilize drawing article and pull whole measurement head to move in packing conduit to be measured, and in moving process, inductive head can
To measure packing conduit diverse location and rotor distance, and then realize the through-flow measurement of steam turbine, it is not necessary to lifting rotor, operation letter
Single, measurement data can be supplied by power supply and digital display module intuitively shows；Further, adjust pad by being equipped with, permissible
It is applicable to different size of steam turbine.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned concrete
Embodiment, above-mentioned detailed description of the invention is only schematic rather than restrictive, those of ordinary skill in the art
Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, it may also be made that a lot
Form, within these belong to the protection of the present invention.
Claims (5)
1. the through-flow survey tool of steam turbine, for measuring steam turbine is through-flow, it is characterised in that include drawing article
(3), measuring head (1) and power supply supply and digital display module (2), described measurement head (1) including: body (11), is arranged on body
(11) end based on laser distance measuring principle measure measure head (1) with the inductive head (12) of spacing of rotor, lever assembly；Institute
State inductive head (12) and described power supply supply and digital display module (2) to be connected by transmission cable (21), described drawing article (3) and basis
One end away from described inductive head (12) of body (11) removably connects to pull whole measurement head (1) at packing conduit to be measured
Interior movement, described lever assembly is rotatably supported at the both sides of body (11) so that measuring head (1) and moving in packing conduit
During constant to the distance of packing channel floor.
Steam turbine the most according to claim 1 is through-flow survey tool, it is characterised in that described lever assembly includes: U-shaped thick stick
Bar (13), the lever extension arm (14) of two L-types, two contact screws (15)；
U-shaped lever (13) is made up of the lever linking arm of two lever sidewalls and two lever sidewalls of connection, two lever sides
Wall is rotatably supported at the left and right side of body (11), the side away from rotor of lever linking arm and body (11) towards
Connected by arm spring (18) between the end face of rotor；Each lever extension arm (14) includes long-armed and galianconism, and two long-armed
It is connected side by side with two lever sidewalls respectively, every galianconism is installed a contact screw (15), and the head of contact screw (15)
Portion is exposed out from the side towards rotor of galianconism.
Steam turbine the most according to claim 2 is through-flow survey tool, it is characterised in that described lever assembly also includes and institute
Stating the adjustment pad (19) of the bar shaped that lever extension arm (14) coordinates, described adjustment pad (19) is positioned at described lever sidewall and institute
State long-armed between, lever sidewall, adjust pad (19), long-armed be connected by screw.
Steam turbine the most according to claim 1 is through-flow survey tool, it is characterised in that described survey tool also includes tape measure
Pullling sheet (16) and head stator (17), tape measure pulls that an installing hole is offered at the two ends of sheet (16) respectively, one for even
Connecing the connection through hole (161) of drawing article (3), the center of head stator (17) offers installing hole, the end of described body (11)
The bottom surface away from rotor in portion offers installing hole；Tape measure pull sheet (16) be held on head stator (17) and body (11) it
Between, and tape measure to pull the bearing of trend of sheet (16) vertical with the bearing of trend of head stator (17), head stator (17), volume
Chi pulls the installing hole of sheet (16) and body (11) just to setting, head stator (17), tape measure is drawn by a screw
Pull sheet (16) to be fixed on body (11).
Steam turbine the most according to claim 4 is through-flow survey tool, it is characterised in that described drawing article (3) is tape measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610638324.7A CN106152993B (en) | 2016-08-05 | 2016-08-05 | A kind of through-flow survey tool of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610638324.7A CN106152993B (en) | 2016-08-05 | 2016-08-05 | A kind of through-flow survey tool of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106152993A true CN106152993A (en) | 2016-11-23 |
| CN106152993B CN106152993B (en) | 2018-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610638324.7A Active CN106152993B (en) | 2016-08-05 | 2016-08-05 | A kind of through-flow survey tool of steam turbine |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178609A (en) * | 1994-12-20 | 1996-07-12 | Chubu Plant Service:Kk | Oscillating gap measuring device |
| CN2543026Y (en) * | 2002-05-09 | 2003-04-02 | 朱月兴 | Turbine through-flow clearance measuring device |
| JP2006242924A (en) * | 2005-03-07 | 2006-09-14 | Hitachi Ltd | Apparatus and method for measuring gap in equipment seal |
| CN200971792Y (en) * | 2006-11-10 | 2007-11-07 | 东北电力大学 | On-line monitoring device for change of through-flow gap of steam turbine |
| CN102944182A (en) * | 2012-08-30 | 2013-02-27 | 哈尔滨汽轮机厂有限责任公司 | Rotor-free through-flow measurement method for steam turbine |
| CN102967271A (en) * | 2012-11-15 | 2013-03-13 | 哈尔滨汽轮机厂有限责任公司 | Assembling clearance measuring device of steam turbine |
| CN205957947U (en) * | 2016-08-05 | 2017-02-15 | 苏州热工研究院有限公司 | Through -flow measuring tool of steam turbine |
-
2016
- 2016-08-05 CN CN201610638324.7A patent/CN106152993B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178609A (en) * | 1994-12-20 | 1996-07-12 | Chubu Plant Service:Kk | Oscillating gap measuring device |
| CN2543026Y (en) * | 2002-05-09 | 2003-04-02 | 朱月兴 | Turbine through-flow clearance measuring device |
| JP2006242924A (en) * | 2005-03-07 | 2006-09-14 | Hitachi Ltd | Apparatus and method for measuring gap in equipment seal |
| CN200971792Y (en) * | 2006-11-10 | 2007-11-07 | 东北电力大学 | On-line monitoring device for change of through-flow gap of steam turbine |
| CN102944182A (en) * | 2012-08-30 | 2013-02-27 | 哈尔滨汽轮机厂有限责任公司 | Rotor-free through-flow measurement method for steam turbine |
| CN102967271A (en) * | 2012-11-15 | 2013-03-13 | 哈尔滨汽轮机厂有限责任公司 | Assembling clearance measuring device of steam turbine |
| CN205957947U (en) * | 2016-08-05 | 2017-02-15 | 苏州热工研究院有限公司 | Through -flow measuring tool of steam turbine |
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| Publication number | Publication date |
|---|---|
| CN106152993B (en) | 2018-10-23 |
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