CN113464218A - Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method - Google Patents
Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method Download PDFInfo
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- CN113464218A CN113464218A CN202110743963.0A CN202110743963A CN113464218A CN 113464218 A CN113464218 A CN 113464218A CN 202110743963 A CN202110743963 A CN 202110743963A CN 113464218 A CN113464218 A CN 113464218A
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- 230000003068 static effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
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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
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a whole supply type high-pressure cylinder and a method convenient for measuring moving and static positions, and the whole supply type high-pressure cylinder comprises a cylindrical cylinder body, wherein a rotor is arranged in the cylinder body, end steam seals are respectively arranged at the end surfaces of two ends of the cylinder body, and a first positioning block and two second positioning blocks are arranged at the end steam seal of each end; the first positioning block is arranged at the upper part of the end steam seal, the side surface of the first positioning block departing from the end steam seal forms a first positioning surface, and the first positioning surface is vertical to a horizontal symmetrical surface in the rotor; the second positioning blocks are respectively arranged at the left side and the right side of the end steam seal, the side surfaces of the second positioning blocks, which are close to the center of the rotor, form second positioning surfaces, and the second positioning surfaces are perpendicular to the vertical symmetrical surface passing through the rotor rotating shaft.
Description
Technical Field
The disclosure belongs to the technical field of high-pressure cylinders of steam turbines, and particularly relates to an integral supply type high-pressure cylinder and a method convenient for measuring dynamic and static positions.
Background
The statements herein merely provide background related to the present disclosure and may not necessarily constitute prior art.
In the current domestic ultra supercritical steam turbine models, the high-pressure cylinder of the steam turbine is supplied by adopting an integral assembly mode. When the high-pressure cylinder assembled in a steam turbine plant is transported to a field for installation, an effective and feasible method is needed to ensure the dynamic and static gaps in the high-pressure cylinder.
After the high-pressure cylinder is in place on the bearing box, before the temporary fixing tool of the high-pressure cylinder is removed, a dial indicator (arranged on a steam seal at the end part of the high-pressure outer cylinder in an erected mode, and a pointer points to the high-pressure rotor) is used for measuring the difference value of the temporary fixing tool of the high-pressure cylinder before and after the temporary fixing tool of the high-pressure cylinder is removed at the adjusting end and the electric end of the high-pressure cylinder in the axial direction of the high-pressure rotor and the radial horizontal direction and the vertical direction of the high-pressure rotor respectively. And adjusting the dynamic and static clearances of the high-pressure cylinder according to the difference between the tool before and after the tool is removed and the data given by the manufacturer.
The inventors have appreciated that the method of measuring the gap using a dial gauge has the following disadvantages:
(1) a sledge hammer (16P) is used for construction in the construction process, and the sledge hammer can intermittently generate vibration to influence the accuracy of the dial indicator.
(2) In the construction process, constructors are very easy to touch the dial indicator due to the narrow operation space, and the accuracy of data is affected.
Disclosure of Invention
The present disclosure provides a high pressure cylinder and a method for measuring dynamic and static positions of the high pressure cylinder, which can solve at least one of the above problems.
In order to achieve the above object, one or more embodiments of the present disclosure further provide an integral supply type high pressure cylinder convenient for measuring dynamic and static positions, including a cylindrical cylinder body, a rotor is disposed in the cylinder body, end steam seals are respectively disposed at end surfaces of two ends of the cylinder body, and a first positioning block and two second positioning blocks are disposed at the end steam seal at each end; the first positioning block is arranged at the upper part of the end steam seal, the side surface of the first positioning block departing from the end steam seal forms a first positioning surface, and the first positioning surface is vertical to a horizontal symmetrical surface in the rotor; the second positioning blocks are respectively arranged at the left side and the right side of the end steam seal, the side surfaces of the second positioning blocks, which are close to the center of the rotor, form second positioning surfaces, and the second positioning surfaces are perpendicular to the vertical symmetrical surface passing through the rotor rotating shaft.
As a further improvement, two second positioning blocks are symmetrically arranged relative to the vertical symmetrical plane of the rotor rotating shaft at the same end of the cylinder body.
One or more technical schemes of the present disclosure further provide a method for positioning the dynamic and static positions of the integrally supplied high-pressure cylinder, including the following steps:
step 1, respectively installing a first positioning block 1 and a second positioning block 2 at end steam seals 4 at two ends of a high-pressure cylinder body;
and 4, adjusting the dynamic and static positions of the high-pressure cylinder according to the difference between the two records.
As a further improvement, when a gap between the rotor and the first positioning block is measured, one end of the inside micrometer is flush with a positioning mark on the first positioning block, and the inside micrometer is enabled to horizontally translate along the horizontal direction, so that the other end of the inside micrometer is tangent to the highest point of the rotor.
As a further improvement, when measuring the clearance between rotor and the second locating piece, the one end of inside micrometer is parallel and level with the second locating surface on the second locating piece to make inside micrometer along vertical translation, so that the other end is tangent with the rightmost end or the leftmost end of rotor.
As a further improvement, the dynamic and static position deviation at the two ends of the rotor is adjusted in sequence.
The beneficial effects of one or more of the above technical solutions are as follows:
the inner wall surface and the outer wall surface of the cylinder body of the high-pressure cylinder are round side surfaces, end steam seals are fixed on the end surfaces of two ends of the cylinder body, the round side surfaces and the end steam seals cannot provide positioning references, and therefore a micrometer cannot be used for measuring gaps. Adopt first locating piece to provide first locating surface in this disclosure, the second locating piece provides the mode of second locating surface, provides the basis for inside micrometer's use, and then when adopting inside micrometer to measure, can not receive the vibration influence that the sledgehammer hammering produced, has improved clearance measurement's precision, provides the foundation for subsequent clearance adjustment, avoids the too big problem of the vibration range of the turbine high pressure cylinder that clearance adjustment is inaccurate to cause.
According to the dynamic and static position positioning method, only the first positioning block and the second positioning block are additionally fixed at the end steam seal, and the whole structure processing and assembling of the high-pressure cylinder of the steam turbine are not affected under the condition of the field measurement accuracy of the clearance value.
The tool can be used for simply and accurately measuring the dynamic and static position change of the high-pressure cylinder after the temporary fixing tool of the high-pressure cylinder is detached, and can ensure the steam seal and the through-flow clearance of the high-pressure cylinder.
First locating piece and second locating piece can install on the steam turbine as permanent equipment in this disclosure, use during the maintenance, can analyze out the equipment operation after a period high pressure cylinder sound clearance change.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of a plurality of locating blocks disposed at a gland seal at an end of a high pressure cylinder in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a first positioning block arranged on the upper portion of a gland seal at the end portion of a high-pressure cylinder in the embodiment of the disclosure;
fig. 3 is a schematic view illustrating that second positioning blocks are respectively disposed on two sides of a gland seal of the end portion of the high-pressure cylinder in the embodiment of the disclosure.
In the figure, 1, a first positioning block; 2. a second positioning block; 3. a connecting bolt; 4. end steam sealing; 5. a high pressure rotor; 101. a first connecting plate; 102. a first positioning plate; 103. a first positioning surface; 201. a second connecting plate; 202. a second positioning plate; 203. a second positioning surface.
Detailed Description
The embodiment provides an integral supply type high-pressure cylinder convenient for measuring moving and static positions, which comprises a cylindrical cylinder body, wherein a rotor 5 is arranged in the cylinder body, end steam seals 4 are respectively arranged at the end surfaces of two ends of the cylinder body, and a first positioning block 1 and two second positioning blocks 2 are arranged at the end steam seal 4 of each end; the first locating block 1 is arranged at the upper part of the end steam seal 4, the side surface of the first locating block 1 departing from the end steam seal 4 forms a first locating surface 103, and the first locating surface 103 is vertical to a horizontal symmetrical surface in the rotor 5; the second positioning blocks 2 are respectively installed at the left side and the right side of the end steam seal 4, the side surfaces of the second positioning blocks 2 close to the center of the rotor 5 form second positioning surfaces 203, and the second positioning surfaces 203 are perpendicular to the vertical symmetrical plane passing through the rotating shaft of the rotor 5.
Specifically, in the present embodiment, the first positioning block 1 is mounted on the upper portion of the high-pressure cylinder end gland seal 4 by using the positioning bolt (M12 × 60).
Specifically, in the present embodiment, the measurement positioning blocks B are mounted on the left and right sides of the high-pressure cylinder end steam seal 4 using positioning bolts (M12 × 60).
It can be understood that the first positioning surface 103 and the second positioning surface 203 are flat surfaces as positioning surfaces used with the inside dial gauge, and in order to reduce the influence of the deformation of the positioning block, the first positioning block 1 and the second positioning block 2 in this embodiment are both made of rigid materials, such as metal.
As a further improvement, the first positioning block 1 protrudes downwards towards the rotor 5 by a set distance.
As a further improvement, at the same end of the cylinder body, the two second positioning blocks 2 are symmetrically arranged relative to the vertical symmetrical plane of the rotating shaft of the rotor 5.
As a further improvement, the horizontal symmetry plane of the rotor 5 passes through the second positioning block 2, and the vertical symmetry plane passing through the rotating shaft of the rotor 5 passes through the first positioning plane 103.
As a further improvement, the first positioning block 1 comprises a first connecting plate 101 fixed with the end steam seal 4, the first connecting plate 101 is fixed with a first positioning plate 102, and the first positioning plate 102 is used for providing a first positioning surface 103.
As a further improvement, the second positioning block 2 includes a second connecting plate 201 for fixing with the end steam seal 4, the second connecting plate 201 is fixed with a second positioning plate 202, and the second positioning plate 202 is used for providing a second positioning surface 203.
Example 2
The embodiment provides a method for positioning dynamic and static positions of an integral supply type high-pressure cylinder, which comprises the following steps:
step 1, respectively installing a first positioning block 1 and a second positioning block 2 at end steam seals 4 at two ends of a high-pressure cylinder body;
and 4, adjusting the dynamic and static positions of the high-pressure cylinder according to the difference between the two records.
In step 2 or 3, when the gap between the rotor 5 and the first positioning block 1 is measured, one end of the inside micrometer is flush with a positioning mark on the first positioning block 1, and the inside micrometer is enabled to horizontally translate along the horizontal direction, so that the other end of the inside micrometer is tangent to the highest point of the rotor 5.
When measuring the clearance between rotor 5 and the second locating piece 2, the one end of inside micrometer is parallel and level with second locating surface 203 on the second locating piece 2 to make inside micrometer along vertical translation, so that the other end is tangent with rotor 5 rightmost end or leftmost end.
As a further improvement, the dynamic and static position deviations at both ends of the rotor 5 are sequentially adjusted.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. An integral supply type high pressure cylinder convenient for measuring dynamic and static positions comprises a cylindrical cylinder body, wherein a rotor is arranged in the cylinder body, and end steam seals are respectively arranged on the end surfaces of two ends of the cylinder body;
the first positioning block is arranged at the upper part of the end steam seal, the side surface of the first positioning block departing from the end steam seal forms a first positioning surface, and the first positioning surface is vertical to a horizontal symmetrical surface in the rotor;
the second positioning blocks are respectively arranged at the left side and the right side of the end steam seal, the side surfaces of the second positioning blocks, which are close to the center of the rotor, form second positioning surfaces, and the second positioning surfaces are perpendicular to the vertical symmetrical surface passing through the rotor rotating shaft.
2. The integrally supplied high pressure cylinder facilitating dynamic and static position measurement of claim 1, wherein the first positioning block extends downward toward the rotor by a set distance.
3. The integrally supplied high pressure cylinder convenient for dynamic and static position measurement as claimed in claim 1, wherein the two second positioning blocks are symmetrically disposed with respect to a vertical symmetry plane passing through the rotation axis of the rotor at the same end of the cylinder body.
4. The integrally supplied high pressure cylinder convenient for dynamic and static position measurement as claimed in claim 1, wherein the horizontal symmetry plane of the rotor passes through the second positioning block, and the vertical symmetry plane passing through the rotor axis passes through the first positioning plane.
5. The integrally supplied high pressure cylinder convenient for dynamic and static position measurement as claimed in claim 1, wherein the first positioning block comprises a first connecting plate fixed with the end gland seal, the first connecting plate is fixed with a first positioning plate, and the first positioning plate is used for providing a first positioning surface.
6. The integrally supplied high pressure cylinder convenient for dynamic and static position measurement as claimed in claim 1, wherein the second positioning block comprises a second connecting plate for fixing with the end steam seal, the second connecting plate is fixed with a second positioning plate, and the second positioning plate is used for providing a second positioning surface.
7. A dynamic and static position positioning method for an integral supply type high-pressure cylinder is characterized by comprising the following steps:
respectively installing a first positioning block and a second positioning block at end steam seals at two ends of a high-pressure cylinder body;
after the production of the high-pressure cylinder is finished and the steam seal gap is adjusted, measuring and recording the gaps between the rotor and the first positioning block and between the rotor and the second positioning block by using an inside micrometer;
transporting the high-pressure cylinder to a construction site, removing a temporary fixing tool of the high-pressure cylinder, and then respectively measuring and recording gaps between the rotor and the first positioning block and the second positioning block by using the inside micrometer again;
and adjusting the dynamic and static positions of the high-pressure cylinder according to the difference between the two records.
8. The method of claim 7, wherein when measuring the gap between the rotor and the first positioning block, one end of the inside micrometer is aligned with a positioning mark on the first positioning block, and the inside micrometer is translated in a horizontal direction such that the other end of the inside micrometer is tangent to the highest point of the rotor.
9. The method of claim 7, wherein when measuring the gap between the rotor and the second positioning block, one end of the inside micrometer is aligned with the second positioning surface of the second positioning block, and the inside micrometer is vertically translated so that the other end is aligned with the rightmost end or the leftmost end of the rotor.
10. The method of claim 7, wherein the deviation of the dynamic and static positions at the two ends of the rotor is adjusted in sequence.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110743963.0A CN113464218A (en) | 2021-06-30 | 2021-06-30 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method |
| PCT/CN2021/126589 WO2023273053A1 (en) | 2021-06-30 | 2021-10-27 | Overall supply type high-pressure cylinder facilitating measurement of dynamic and static positions, and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110743963.0A CN113464218A (en) | 2021-06-30 | 2021-06-30 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113464218A true CN113464218A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110743963.0A Pending CN113464218A (en) | 2021-06-30 | 2021-06-30 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113464218A (en) |
| WO (1) | WO2023273053A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273053A1 (en) * | 2021-06-30 | 2023-01-05 | 中国电建集团山东电力建设第一工程有限公司 | Overall supply type high-pressure cylinder facilitating measurement of dynamic and static positions, and method |
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| JP2011085234A (en) * | 2009-10-19 | 2011-04-28 | Toshiba Corp | Gland sealer of high-pressure steam turbine |
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| CN203856517U (en) * | 2014-01-26 | 2014-10-01 | 国家电网公司 | Steam turbine internal cylinder capable of measuring dynamic and static clearance |
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| CN105484807A (en) * | 2016-01-27 | 2016-04-13 | 中电投河南电力检修工程有限公司 | Precise and efficient adjustment process system for steam seal clearance of steam turbine |
| CN215369962U (en) * | 2021-06-30 | 2021-12-31 | 中国电建集团山东电力建设第一工程有限公司 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317471A (en) * | 2015-11-26 | 2016-02-10 | 华电电力科学研究院 | Turbine steam seal clearance adjustment method |
| CN108072308A (en) * | 2017-09-05 | 2018-05-25 | 中国电建集团河南工程有限公司 | Large turbine-generator set shafting radial clearance measures and method of adjustment |
| CN110541735B (en) * | 2019-08-23 | 2024-06-21 | 中信重工机械股份有限公司 | Rotor fixing device for whole turbine transportation of steam turbine |
| CN113464218A (en) * | 2021-06-30 | 2021-10-01 | 中国电建集团山东电力建设第一工程有限公司 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions and method |
-
2021
- 2021-06-30 CN CN202110743963.0A patent/CN113464218A/en active Pending
- 2021-10-27 WO PCT/CN2021/126589 patent/WO2023273053A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011085234A (en) * | 2009-10-19 | 2011-04-28 | Toshiba Corp | Gland sealer of high-pressure steam turbine |
| CN203856517U (en) * | 2014-01-26 | 2014-10-01 | 国家电网公司 | Steam turbine internal cylinder capable of measuring dynamic and static clearance |
| CN103939156A (en) * | 2014-05-14 | 2014-07-23 | 山东电力建设第三工程公司 | Method for installing nuclear power half-speed steam turbine |
| CN104314624A (en) * | 2014-08-20 | 2015-01-28 | 东方电气集团东方汽轮机有限公司 | Device and method for monitoring center change of air cylinder in process of covering cylinder of steam turbine |
| CN105484807A (en) * | 2016-01-27 | 2016-04-13 | 中电投河南电力检修工程有限公司 | Precise and efficient adjustment process system for steam seal clearance of steam turbine |
| CN215369962U (en) * | 2021-06-30 | 2021-12-31 | 中国电建集团山东电力建设第一工程有限公司 | Integral supply type high-pressure cylinder convenient for measuring dynamic and static positions |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273053A1 (en) * | 2021-06-30 | 2023-01-05 | 中国电建集团山东电力建设第一工程有限公司 | Overall supply type high-pressure cylinder facilitating measurement of dynamic and static positions, and method |
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| WO2023273053A1 (en) | 2023-01-05 |
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