CN106152993B - 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
- CN106152993B CN106152993B CN201610638324.7A CN201610638324A CN106152993B CN 106152993 B CN106152993 B CN 106152993B CN 201610638324 A CN201610638324 A CN 201610638324A CN 106152993 B CN106152993 B CN 106152993B
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- lever
- head
- ontology
- steam turbine
- survey tool
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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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- General Physics & Mathematics (AREA)
- Control Of Turbines (AREA)
Abstract
A kind of through-flow survey tool of steam turbine, including drawing article, measurement head and power supply are supplied and digital display module, the measurement head include：Inductive head, the lever assembly for measuring distance between measurement head and rotor based on laser distance measuring principle in body end is arranged in ontology；The inductive head is supplied with the power supply and digital display module is connected by transmission cable, one end far from the inductive head of the drawing article and ontology is detachably connected to pull entire measurement head to be moved in packing conduit to be measured, and the lever assembly is rotatably supported at the both sides of ontology so that distance of the measurement head in packing conduit in moving process to packing channel floor is constant.The present invention can be directly realized by the through-flow measurement of steam turbine, easy to operate without lifting by crane rotor, and measurement data can be supplied by power supply and digital display module is intuitively shown；Further, by being equipped with adjust pad, it can be adapted for different size of steam turbine.
Description
Technical field
The present invention relates to steam turbine for nuclear power station field more particularly to a kind of through-flow survey tools of steam turbine.
Background technology
Power plant needs to carry out accurate measurement to packing, partition board and flow passage component in steam turbine installation, maintenance process, it is ensured that
The center of stator blade can be to the center of movable vane piece on rotor on partition board of steam turbine, and diaphragm gland is made to obtain uniform gap.
In order to improve the efficiency of unit and ensure its safe operation, through-flow gap will be measured and be adjusted during the overhaul of power plant
Whole, this is a precision and hard work.
At present in nuclear power plant, the method that usually used measurement is through-flow includes dummy shaft method, pressing lead wires, clearance gauge hand dipping
The methods of.Dummy shaft method, dummy shaft are generally formed by heavy wall pipe vehicle system, and the pipe being relatively large in diameter is loaded onto at both ends, vehicle at axle journal
Identical diameter, to be supported on bearing shell, dummy shaft can also be supported in special false bearings, but such as bearing bush abrasion or displacement
It will influence measurement data, false bearings complex manufacturing technology, in addition dummy shaft is there is also quiet winding degree, the through-flow number for causing dummy shaft method to measure
According to inaccurate.Pressing lead wires and clearance gauge manual measurement method need to lift by crane rotor repeatedly, and operating risk is high, galvanized wire thickness after compression
Variation need hand dipping, data processing amount is huge, bothersome laborious.
Invention content
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, it is through-flow to provide a kind of steam turbine
Survey tool.
The technical solution adopted by the present invention to solve the technical problems is：The invention discloses a kind of steam turbine is through-flow for construction
Survey tool, for being measured to steam turbine is through-flow, including drawing article, measurement head and power supply supply and digital display module, it is described
Measurement head includes：The sense for measuring distance between measurement head and rotor based on laser distance measuring principle in body end is arranged in ontology
Answer head, lever assembly；The inductive head is supplied with the power supply and digital display module is connected by transmission cable, the drawing article with
One end far from the inductive head of ontology is detachably connected to pull entire measurement head to be moved in packing conduit to be measured, institute
It states lever assembly and is rotatably supported at the both sides of ontology 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, the lever assembly includes：U-shaped lever, two L-types
Lever extension arm, two contact screws；
U-shaped lever is made of the lever linking arm of two lever side walls of two lever side walls and connection, two lever sides
Wall is rotatably supported at the left and right side of ontology, the side of the separate rotor of lever linking arm and the end towards rotor of ontology
It is connected by arm spring between face；Each lever extension arm includes long-armed and galianconism, two it is long-armed respectively with two lever sides
Wall connects side by side, a contact screw is installed on every galianconism, and the head of contact screw is from the side towards rotor of galianconism
It exposes.
In the through-flow survey tool of steam turbine of the present invention, the lever assembly further includes and the lever extension arm
The adjust pad of the bar shaped of cooperation, the adjust pad be located at the lever side wall and it is described it is long-armed between, lever side wall, adjustment
Gasket long-armed is connected by screw.
Further include that tape measure pulls piece and head fixinig plate, tape measure in the through-flow survey tool of steam turbine of the present invention
The both ends for pullling piece open up a mounting hole, a connection through-hole for connecting drawing article, the center of head fixinig plate respectively
Mounting hole is offered, the bottom surface of the separate rotor of the end of the ontology offers mounting hole；Tape measure pulls piece and is held on head
Between fixinig plate and ontology, and tape measure pull piece extending direction it is vertical with the extending direction of head fixinig plate, head fixinig plate,
Tape measure pulls the mounting hole face setting of piece and ontology, and head fixinig plate, tape measure are pullled piece and be fixed on by a screw
On ontology.
In the through-flow survey tool of steam turbine of the present invention, the drawing article is tape measure.
The through-flow survey tool of steam turbine for implementing the present invention, has the advantages that：The through-flow survey of steam turbine of the present invention
Amount directly can pull entire measurement head to be moved in packing conduit to be measured using drawing article, and inductive head can in moving process
To measure packing conduit different location and rotor distance, and then the through-flow measurement of steam turbine is realized, without lifting by crane rotor, operation letter
Single, measurement data can be supplied by power supply and digital display module is intuitively shown；It further, can be with by being equipped with adjust pad
Suitable for different size of steam turbine.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing：
Fig. 1 is the structural schematic diagram of the through-flow survey tool of steam turbine of the present invention；
Fig. 2 is the structural schematic diagram of ontology in Fig. 1；
Fig. 3 is the structural schematic diagram of the through-flow survey tool of steam turbine and the cooperation of packing conduit of the present invention；
Fig. 4 is the use schematic diagram of the adjust pad of the through-flow survey tool of steam turbine of the present invention；
Fig. 5 is the course of work schematic diagram of the through-flow survey tool of steam turbine of the present invention.
Specific implementation mode
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
The specific implementation mode of the present invention.
It is the structural schematic diagram of the through-flow survey tool of steam turbine of the present invention with reference to figure 1-2, Fig. 1；Fig. 2 is ontology in Fig. 1
Structural schematic diagram.
The through-flow survey tool of steam turbine of the present invention is measured between packing conduit rotor by laser distance measuring principle
Distance.It includes with lower structure：Drawing article 3, measurement head 1 and power supply supply and digital display module 2.
Drawing article 3, for pulling entire measurement head 1 to be moved in packing conduit to be measured, to measure at different location
It is through-flow.In specific implementation, drawing article 3 is realized using tape measure, naturally it is also possible to be had using other certain rigid and flexible
Product substitutes, and is not limited to this.
Power supply is supplied and digital display module 2, mainly provides power supply for measurement head 1 and real-time display measures the number of degrees.
The structure and measuring principle of measurement head 1 are highlighted below.
With reference to figure 1, measurement head 1 includes mainly：Ontology 11 is arranged in 11 end of ontology based on laser distance measuring principle measurement
Inductive head 12, the lever assembly of distance between measurement head 1 and rotor.
Wherein, the inductive head 12 and power supply supply and digital display module 2 are connected by transmission cable 21, the pulling
Part 3 and one end far from the inductive head 12 of ontology 11 are detachably connected to pull entire measurement head 1 in packing slot to be measured
It is moved in road, the lever assembly is rotatably supported at the both sides of ontology 11 so that measurement head 1 is moved through in packing conduit
Distance in journey to packing channel floor is constant.
With reference to figure 2, in a specific embodiment, ontology 11 includes the U-shaped main part 113 in cross section, is located at main part
Two load receiving parts 111,112 at 113 both ends.The end set inductive head 12 of the close load receiving part 111 of main part 113, main part
The end of 113 close load receiving part 112 connects drawing article 3.Through-hole 1120 is offered on load receiving part 112, for installing lever group
Part.
Certainly, the shape of ontology 11 is designed according to packing conduit, however it is not limited to shape and structure shown in Fig. 2.
It continues to refer to figure 1, the connection that drawing article 3 is described below is realized.
In specific embodiment, steam turbine is through-flow, and survey tool further includes that tape measure is pullled piece 16 and substantially consolidated in the head of bar shaped
Stator 17, the both ends that tape measure pulls piece 16 open up a mounting hole, a connection through-hole 161 for connecting drawing article 3 respectively,
The center of head fixinig plate 17 offers mounting hole, the separate rotor of the end (i.e. load receiving part 112 in Fig. 2) of the ontology 11
Bottom surface offer mounting hole；Tape measure is pullled piece 16 and is held between head fixinig plate 17 and ontology 11, and tape measure pulls piece 16
Extending direction it is vertical with the extending direction of head fixinig plate 17, head fixinig plate 17, tape measure pull piece 16 and ontology 11
Mounting hole face is arranged, and will be coordinated with these mounting holes by a screw and be consolidated so that head fixinig plate 17, tape measure are pullled piece 16
It is scheduled on ontology 11.
It continues to refer to figure 1, the concrete structure of lever assembly is described below.
The lever assembly includes：14, two contact screws 15 of lever extension arm of 13, two L-types of U-shaped lever, preferably
, further include the adjust pad 19 of the bar shaped coordinated with the lever extension arm 14.Adjust pad 19 includes various thickness, is used
When according to the width of packing conduit be specifically chosen suitable thickness adjust pad 19.
U-shaped lever 13 is made of the lever linking arm of two lever side walls of two lever side walls and connection, two levers
Side wall, which is connected through the hinge, is rotatably supported at the left and right side of ontology 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 the side and the end face towards rotor of ontology 11 of the separate rotor of linking arm, specific example
Middle arm spring 18 is arranged between lever linking arm and tape measure pull piece 16.
The lever extension arm 14 of each L-type includes long-armed and galianconism, and two long-armed to pass through pin with two lever side walls respectively
Nail connects side by side, installs contact screw 15 on every galianconism, and the head of contact screw 15 is from galianconism towards rotor
Side exposes.
When packing conduit size is larger, need the lever side wall and it is described it is long-armed between increase adjust pad 19.
When needing using the adjust pad 19, then first lever extension arm 14 can be disassembled from lever side wall, then be led to
Cross screw by lever side wall, adjust pad 19, long-armed link together.
As it can be seen that the present invention parts it is all fairly simple, it is easy to process, replace, be beneficial to shorten the steam turbine overhaul duration,
Reduce cost.
Illustrate the operation principle of the present invention with reference to Fig. 3-4.
The structural schematic diagram coordinated with packing conduit with reference to the through-flow survey tool of steam turbine that figure 3 is the present invention；Fig. 4 is this
The adjust pad of the through-flow survey tool of steam turbine of invention uses schematic diagram.
With reference to figure 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 presses down so that entire survey tool is inserted into packing slot, and according to lever principle, one, lever is downward, then separately
One is upturned, at this time since the lever linking arm of U-shaped lever 13 is by separate shown in arm spring 18 downwards i.e. Fig. 1
Tape measure pulls the elastic force in the direction of piece 16, i.e. one end of the separate contact screw 15 of lever side wall by downward active force, because
Then necessarily by tip-tilted active force, this active force ensures contact for one end of the close contact screw 15 of this lever side wall
Screw 15 is contacted with packing slot outer surface always, and in addition the both sides of ontology 11 are contacted with the upper conduit of packing conduit, can be protected in this way
It is constant to demonstrate,prove the relative position of exercise sessions and turbine rotor in packing conduit of measurement head 1, it is ensured that the reading of inductive head 12 is accurate
Really.
With reference to figure 4, when turbine steam seal channel floor has pin hole 30, U-shaped lever 13 and the formation of lever extension arm 14
Whole width it is inadequate, be easy to cause 1 bite of measurement head, therefore can extend with lever in the lever side wall of U-shaped lever 13
Increase adjust pad 19 between arm 14.
With reference to Fig. 5, the use process of the present invention is introduced.It is the through-flow survey tool of steam turbine of the present invention with reference to figure 5
Course of work schematic diagram.
As shown, 40 expression turbine rotor, the course of work are as follows in figure：First, tape measure is inserted into packing conduit
Interior right side is pulled out around conduit from left side；Then the tape measure of measurement head 1 is pullled into piece 16 by groove and tape measure with clip in left side
It is secured together；The lever linking arm for pushing down the U-shaped lever 13 of measurement head 1, makes measurement head 1 be inserted into packing conduit；It uses
Measurement head 1 is moved to the 3 o'clock position on right side by tape measure, micro- using power supply to zero-sum using 1 coarse adjustment of measurement head as shown in A1 in figure
It adjusts；6 o'clock that measurement head 1 is reversely moved to bottom again using transmission cable 21 and is read direction, as shown in A2 in figure；It will survey again
Amount head 1 moves the 9 o'clock direction reading in left side to, as shown in A3 in figure.
The through-flow survey tool of steam turbine for implementing the present invention, has the advantages that：The through-flow survey of steam turbine of the present invention
Amount directly can pull entire measurement head to be moved in packing conduit to be measured using drawing article, and inductive head can in moving process
To measure packing conduit different location and rotor distance, and then the through-flow measurement of steam turbine is realized, without lifting by crane rotor, operation letter
Single, measurement data can be supplied by power supply and digital display module is intuitively shown；It further, can be with by being equipped with adjust pad
Suitable for different size of steam turbine.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (5)
1. a kind of through-flow survey tool of steam turbine, for being measured to steam turbine is through-flow, which is characterized in that including drawing article
(3), measurement head (1) and power supply supply and digital display module (2), the measurement head (1) include：Ontology (11) is arranged in ontology
(11) inductive head (12), the lever assembly that measurement head (1) distance between rotor is measured based on laser distance measuring principle of end；Institute
It states inductive head (12) and power supply supply and digital display module (2) is connected by transmission cable (21), the drawing article (3) and sheet
One end far from the inductive head (12) of body (11) is detachably connected to pull entire measurement head (1) in packing conduit to be measured
Interior movement, the lever assembly is rotatably supported at the both sides of ontology (11) so that measurement head (1) moves in packing conduit
The distance for arriving packing channel floor in the process is constant；Wherein, the ontology (11) includes main part (113), is located at main part
(113) two load receiving parts (111,112) at both ends.
2. the through-flow survey tool of steam turbine according to claim 1, which is characterized in that the 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 of the lever linking arm of two lever side walls of two lever side walls and connection, two lever sides
Wall is rotatably supported at the left and right side of ontology (11), the direction of the side and ontology (11) of the separate rotor of lever linking arm
It is 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 connect side by side with two lever side walls respectively, a contact screw (15), and the head of contact screw (15) is installed on every galianconism
Portion is exposed from the side towards rotor of galianconism.
3. the through-flow survey tool of steam turbine according to claim 2, which is characterized in that the lever assembly further includes and institute
The adjust pad (19) of the bar shaped of lever extension arm (14) cooperation is stated, the adjust pad (19) is located at the lever side wall and institute
State it is long-armed between, lever side wall, long-armed is connected by screw adjust pad (19).
4. the through-flow survey tool of steam turbine according to claim 1, which is characterized in that the survey tool further includes tape measure
Pull piece (16) and head fixinig plate (17), the both ends that tape measure pulls piece (16) open up that a mounting hole, one for connecting respectively
The connection through-hole (161) of drawing article (3) is connect, the center of head fixinig plate (17) offers mounting hole, the end of the ontology (11)
The bottom surface of the separate rotor in portion offers mounting hole；Tape measure pull piece (16) be held on head fixinig plate (17) and ontology (11) it
Between, and tape measure pull piece (16) extending direction it is vertical with the extending direction of head fixinig plate (17), head fixinig plate (17), volume
Ruler pulls the mounting hole face setting of piece (16) and ontology (11), is drawn head fixinig plate (17), tape measure by a screw
Piece (16) is pulled to be fixed on ontology (11).
5. the through-flow survey tool of steam turbine according to claim 4, which is characterized in that the 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 |
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| Publication Number | Publication Date |
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| CN106152993A CN106152993A (en) | 2016-11-23 |
| CN106152993B true CN106152993B (en) | 2018-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
|---|---|
| CN106152993A (en) | 2016-11-23 |
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