CN114136186B - Method for measuring and adjusting axial clearance of shaft seal type nuclear main pump thrust bearing - Google Patents
Method for measuring and adjusting axial clearance of shaft seal type nuclear main pump thrust bearing Download PDFInfo
- Publication number
- CN114136186B CN114136186B CN202111398611.2A CN202111398611A CN114136186B CN 114136186 B CN114136186 B CN 114136186B CN 202111398611 A CN202111398611 A CN 202111398611A CN 114136186 B CN114136186 B CN 114136186B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000000712 assembly Effects 0.000 claims description 26
- 238000000429 assembly Methods 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect 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
- G01B5/146—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures measuring play on bearings
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention relates to a method for measuring and adjusting axial clearance of a shaft seal type nuclear main pump thrust bearing, which adopts a mode of measuring a pressure disc clamping thrust disc and a dial indicator so as to accurately measure and adjust the axial clearance of the thrust bearing, and comprises the following steps: and (3) finishing assembly of a pressure disc: the upper pressure disc (6) is placed on the thrust disc (13), the mandrel (3) is placed on the upper pressure disc (6), the lower pressure disc (11) is installed on the thrust disc (13), the second hexagon head bolt (7) is adopted to penetrate through the lower pressure disc (11) to be screwed with the mandrel (3), the measuring disc (2) is placed on the mandrel (3), and the first hexagon head bolt (1) is installed and screwed. The invention can ensure that the heights of the thrust tiles are basically consistent and the clearance between the thrust tiles and the thrust disc meets the requirements, and solves the problem that the axial movement range of the thrust disc is too large or too small and the problem that the clearance between the thrust tiles and the thrust disc is different.
Description
Technical field:
the invention relates to a method for measuring and adjusting axial clearance of a shaft seal type nuclear main pump thrust bearing.
The background technology is as follows:
The thrust bearing is a main component of a shaft seal type nuclear main pump of the nuclear power station, and is also a key component of the nuclear main pump, and the control of the axial clearance of the thrust bearing is particularly important for the normal operation of the shaft seal type nuclear main pump and the localization of the manufacturing technology of the main pump. Accurate adjustment of the axial clearance of the thrust bearing has been a process challenge. The traditional dummy shaft adjustment process has complex installation steps, large and multiple adopted sizes of parts and high requirements on the field, and the adjustment mode of the dummy shaft adjustment process needs a special motor support installation platform and large hydraulic lifting equipment, and when the process is used for axial clearance of a thrust bearing, obvious quality defects can be generated, and the process comprises the following steps: the thrust disc is not installed in place but cannot be directly observed, the contact condition between the thrust disc and the upper bearing chamber cannot be checked after the lower bearing chamber is installed in the motor support, so that the gap between the thrust disc and the thrust shoe is uncontrolled and cannot be accurately measured, even the gap between the thrust disc and the thrust shoe needs to be readjusted, the readjusted result is still inaccurate, cost loss and construction period delay are brought, even if the thrust disc and the thrust shoe are installed, the gap between the thrust disc and the thrust shoe is possibly too large or too small, further, the oil temperature and the oil pressure of the thrust bearing are abnormal, the vibration of a main pump exceeds the standard, the thrust bearing is seriously damaged, and nuclear power plant accidents are more seriously caused.
The invention comprises the following steps:
The invention aims to disclose a method for measuring and adjusting axial clearance of a shaft seal type nuclear main pump thrust bearing, which has the advantages of high reliability, high precision, high efficiency and stable data. The technical scheme of the invention is as follows: the thrust disk is clamped by the pressure disk and the dial indicator is used for measuring, so that the axial clearance of the thrust bearing is accurately measured and adjusted, and the method comprises the following steps:
1) And (3) finishing assembly of a pressure disc: placing an upper pressure disc (6) on a thrust disc (13), placing a mandrel (3) on the upper pressure disc (6), mounting a lower pressure disc (11) on the thrust disc (13), tightening the mandrel (3) through the lower pressure disc (11) by adopting a second hexagonal head bolt (7), placing a measuring disc (2) on the mandrel (3), and mounting and tightening the first hexagonal head bolt (1);
2) Measuring whether the heights TD1 of all the main thrust tile assemblies (5) are 69.99mm or less and the heights TD1 are 70mm or less, and when the heights TD1 do not meet the requirements, replacing the existing main thrust tile assemblies (5) and using new main thrust tile assemblies; measuring whether the heights TD2 of all the auxiliary thrust tile assemblies (9) are 69.99mm or less and the heights TD2 are 70mm or less, and when the heights TD2 do not meet the requirements, replacing the existing auxiliary thrust tile assemblies (9) and using new auxiliary thrust tile assemblies;
3) The second limit bolt (8) is installed in the lower bearing chamber (12) and screwed down, the auxiliary thrust tile assembly (9) is installed on the lower bearing chamber (12), and the thrust disc (13) is placed on the auxiliary thrust tile assembly (9); an inner hexagon screw (17) is adopted to assemble and screw an upper bearing chamber (18) and a base (16), a first limit bolt (4) is installed in the base (16) and screwed, a stud (15) is installed in the base (16) and screwed, a main thrust tile assembly (5) is installed on the base (16), a hexagon nut (14) is installed and screwed to fix the main thrust tile assembly (5), and the upper bearing chamber (18) is installed on a lower bearing chamber (12);
4) Symmetrically installing two dial indicator magnetic bases (19) on an upper bearing chamber (18), installing two dial indicators (20) on the dial indicator magnetic bases (19) and contacting with a measuring disc (2), and zeroing the dial indicators (20);
5) Slowly lifting the mandrel (3) to drive the thrust disc (13) to move upwards, observing the change of the values of the dial indicators (20), stopping lifting the mandrel (3) until the values of the dial indicators (20) are not changed any more, wherein the values of the two dial indicators (20) are consistent, the value of the dial indicator (20) is the gap A between the current thrust disc (13) and the main thrust tile assembly (5), and recording the gap A at the moment, and the gap A is the axial gap of the thrust bearing;
6) Since step 5) does not provide for the mounting of a shim (10) when measuring the axial clearance of the thrust bearing, the clearance A should be such that
0.25mm＜A＜0.97mm
And the final qualified gap A needs to be satisfied
0.2mm≤A≤0.22mm
So the axial clearance of the thrust bearing measured at the moment is too large and does not meet the final requirement, and a gasket (10) is required to be arranged between the thrust shoe assembly (9) and the lower bearing chamber (12) so as to adjust the axial clearance of the thrust bearing;
7) Dismantling the dial indicator magnetic base (19) and the dial indicator (20), dismantling the upper bearing chamber (18) and the thrust disc (13), wherein: the upper bearing chamber (18) is detached from the first limit bolt (4), the main thrust tile assembly (5), the hexagonal nut (14), the stud (15), the base (16) and the inner hexagonal screw (17) as a whole, and the thrust disc (13) is detached from the first hexagonal bolt (1), the measuring disc (2), the mandrel (3), the upper pressure disc (6), the second hexagonal bolt (7) and the lower pressure disc (11) as a whole; removing the auxiliary thrust shoe assembly (9);
8) Calculating the thickness of the gasket (10) as the gap A recorded in the step 5)
A-0.21mm
Placing a gasket (10) on the lower bearing chamber (12);
9) Reinstalling the secondary thrust shoe assembly (9) and compressing the shim (10), placing the thrust disc (13) assembly removed in step 7) on the secondary thrust shoe assembly (9), mounting the upper bearing chamber (18) assembly on the lower bearing chamber (12), repeating steps 4) and 5), since the shim (10) is now installed and the thickness of the shim (10) is precisely calculated, the gap a between the thrust disc (13) and the primary thrust shoe assembly (5) should now meet the final requirements
0.2mm≤A≤0.22mm
The clearance A between the thrust disc (13) and the main thrust tile assembly (5) is the axial clearance of the thrust bearing, so that the measurement and adjustment of the axial clearance of the thrust bearing are completed.
The adjustable range of the gasket (10) is 0.03 mm-0.75 mm.
The working principle of the invention is as follows:
The invention adopts the working process and principle that the upper pressure disk and the lower pressure disk are adopted to clamp the thrust disk, the mandrel is adopted to be connected with the upper pressure disk and the lower pressure disk, the thrust disk is arranged between the main thrust tile assembly and the auxiliary thrust tile assembly, the height change of the upper measuring disk is observed through lifting the height of the mandrel, and the moving distance of the thrust disk between the main thrust tile assembly and the auxiliary thrust tile assembly, namely the axial clearance of the thrust bearing, is indirectly measured. The heights of all the thrust tile assemblies are controlled to be 69.99-70 mm, the height difference of any two thrust tile assemblies is not more than 0.01mm, the contact surfaces of all the thrust tiles and the thrust disc can be guaranteed to be basically at the same height, the thin-wall structure inside the thrust tile assemblies has certain elastic deformation capacity, when the thrust disc extrudes the thrust tile assemblies, the higher thrust tile assemblies can be extruded by the thrust disc to be elastically deformed so as to reduce the heights, and the higher thrust tiles and other thrust tiles are completely at the same height, so that all the thrust tiles can be guaranteed to be contacted with the thrust disc. Two dial indicators are symmetrically placed on two sides of the measuring disc, and meanwhile, whether the values of the two dial indicators are the same or not is observed, so that whether the thrust disc is lifted or not can be judged, and measurement errors caused by inclination of the thrust disc are avoided. The adjustable range of the gasket is 0.03 mm-0.75 mm, and the thickness of the gasket can be accurately controlled, so that the axial clearance of the thrust bearing can be ensured to meet the requirement.
The invention has the technical effects that:
The nuclear main pump shares a set of thrust bearing with the driving motor, and the design of the thrust bearing is to bear all axial loads generated during the operation of the main pump and transmit the axial loads to the motor support and the foundation. The shafting of the nuclear main pump runs in the theoretical running center of the main pump when rotating, a motor shaft for providing power in the shafting passes through the thrust disc and drives the thrust disc to run together with the shafting, the axial movable range of the thrust disc is the axial clearance of the thrust bearing, the numerical value of the clearance determines the integral axial movable range of the main pump shafting, and the normal running of the main pump can be influenced by too large or too small axial movable range of the thrust disc. If the axial movement range of the thrust disc cannot be accurately measured, the axial movement range cannot be accurately adjusted, the oil temperature and the oil pressure of the thrust bearing are abnormal when the main pump operates, the vibration of the main pump exceeds the standard, the thrust bearing is seriously damaged, and the nuclear power plant accident is caused more seriously.
The invention creatively adopts a mode of clamping the thrust disc and measuring the dial indicator by the pressure disc, thereby accurately measuring and adjusting the clearance A between the thrust disc and the thrust shoe, wherein the clearance A between the thrust disc and the thrust shoe is the axial clearance of the thrust bearing. The method has the advantages that firstly, the axial movement range of the thrust disc can be accurately measured, and the clearance between the thrust disc and the thrust shoe can be accurately adjusted, so that the axial clearance of the thrust bearing is ensured to be qualified, and the traditional method has large measurement error and unstable data result, so that the clearance A between the thrust disc and the thrust shoe can not be accurately adjusted, and the axial clearance of the thrust bearing can not be ensured to be qualified. And secondly, in the step 2), the heights of all the thrust tile assemblies are required to be controlled between 69.99mm and 70mm, so that the contact surfaces of all the thrust tiles and the thrust disc can be ensured to be basically at the same height, the thin-wall structure inside the thrust tile assemblies has certain elastic deformation capacity, and the thrust tile assemblies with higher heights can be automatically compressed to reduce the heights, so that all the thrust tiles can be contacted with the thrust disc, and the thrust tiles can be uniformly transmitted to each thrust tile when the thrust disc transmits the axial load of the nuclear main pump, and the phenomenon that individual thrust tiles bear the load independently so as to cause serious abrasion and high temperature is avoided. Thirdly, two dial indicators are symmetrically placed on two sides of the measuring disc, and meanwhile, whether the values of the two dial indicators are the same or not is observed, so that whether the thrust disc is lifted or not can be judged, and measurement errors caused by inclination of the thrust disc are avoided. Fourth, the accuracy of the axial clearance of the thrust bearing is improved, so that the adjustment efficiency is improved, and the assembly time is reduced. And fifthly, the thickness of the gasket can be accurately controlled, so that the axial clearance of the thrust bearing can meet the requirement, and the reworking condition caused by inaccurate adjustment size is avoided. And sixthly, due to the fact that the accuracy of adjusting the axial clearance of the thrust bearing by the method reduces the vibration of the whole main pump caused by different clearances between each thrust shoe and each thrust disc, the abrasion of the radial bearing is reduced, the service life of the radial bearing is prolonged, and the risk of stopping the shaft seal type nuclear main pump is reduced.
Description of the drawings:
FIG. 1 thrust bearing assembly view
FIG. 2 main thrust shoe assembly measurement schematic
FIG. 3 schematic measurement of a secondary thrust shoe assembly
FIG. 4 main thrust shoe assembly view
The specific embodiment is as follows:
as shown in fig. 1, a method for measuring and adjusting axial gap of a shaft seal type nuclear main pump thrust bearing adopts a mode that a pressure disc clamps a thrust disc and a dial indicator to measure so as to accurately measure and adjust the axial gap of the thrust bearing, and the method comprises the following steps:
1) And (3) finishing assembly of a pressure disc: placing the upper pressure disc 6 on the thrust disc 13, placing the mandrel 3 on the upper pressure disc 6, mounting the lower pressure disc 11 on the thrust disc 13, tightening the mandrel 3 with the second hexagonal head bolt 7 through the lower pressure disc 11, placing the measuring disc 2 on the mandrel 3, and mounting and tightening the first hexagonal head bolt 1;
2) As shown in fig. 2, whether the heights TD1 of all the main thrust tile assemblies 5 meet 69.99mm < TD1 < 70mm or not is measured, and when the heights TD1 do not meet the requirements, the existing main thrust tile assemblies 5 should be replaced and new main thrust tile assemblies should be used; as shown in fig. 3, whether the heights TD2 of all the auxiliary thrust tile assemblies 9 meet 69.99mm < TD2 < 70mm or not is measured, and when the td2 does not meet the requirements, the existing auxiliary thrust tile assemblies 9 should be replaced and new auxiliary thrust tile assemblies are used;
3) As shown in fig. 1, the second limit bolts 8 are installed in the lower bearing chamber 12 and screwed down, the sub thrust shoe assembly 9 is mounted on the lower bearing chamber 12, and the thrust disc 13 is placed on the sub thrust shoe assembly 9; as shown in fig. 4, the upper bearing chamber 18 is assembled with the base 16 by using the socket head cap screws 17 and tightened, the first limit bolts 4 are installed in the base 16 and tightened, the studs 15 are installed in the base 16 and tightened, the main thrust tile assembly 5 is mounted on the base 16, the hexagonal nuts 14 are mounted and tightened to fix the main thrust tile assembly 5, and the upper bearing chamber 18 is mounted on the lower bearing chamber 12;
4) As shown in fig. 1, two dial indicator magnetic bases 19 are symmetrically arranged on an upper bearing chamber 18, two dial indicators 20 are arranged on the dial indicator magnetic bases 19 and are in contact with a measuring disc 2, and the dial indicators 20 are zeroed;
5) As shown in fig. 1, the spindle 3 is slowly lifted to drive the thrust disc 13 to move upwards, the change of the values of the dial indicators 20 is observed, the spindle 3 is stopped to be lifted until the values of the dial indicators 20 are not changed any more, the values of the two dial indicators 20 are consistent, the value of the dial indicator 20 is the gap A between the current thrust disc 13 and the main thrust tile assembly 5, the gap A at the moment is recorded, and the gap A is the axial gap of the thrust bearing;
6) Since step 5) does not provide for mounting the shim 10 when measuring the thrust bearing axial gap, the gap A at this time should be such that
0.25mm＜A＜0.97mm
And the final qualified gap A needs to be satisfied
0.2mm≤A≤0.22mm
So the axial clearance of the thrust bearing measured at this time is too large to meet the final requirement, and a gasket 10 is required to be installed between the thrust shoe assembly 9 and the lower bearing chamber 12, so as to adjust the axial clearance of the thrust bearing;
7) As shown in fig. 1, the dial indicator magnetic base 19 and the dial indicator 20 are removed, and the upper bearing chamber 18 and the thrust disk 13 are removed, wherein: the upper bearing chamber 18 is removed with the first limit bolt 4, the main thrust tile assembly 5, the hexagonal nut 14, the stud 15, the base 16 and the inner hexagonal screw 17 as a whole, and the thrust disc 13 is removed with the first hexagonal bolt 1, the measuring disc 2, the mandrel 3, the upper pressure disc 6, the second hexagonal bolt 7 and the lower pressure disc 11 as a whole; removing the auxiliary thrust shoe assembly 9;
8) Calculating the thickness of the gasket 10 from the gap A recorded in step 5) to be
A-0.21mm
As shown in fig. 1, a gasket 10 is placed on a lower bearing housing 12;
9) Reinstalling the secondary thrust shoe assembly 9 and compressing the shim 10 as shown in fig. 1, placing the thrust disc 13 assembly removed in step 7) on the secondary thrust shoe assembly 9, mounting the upper bearing chamber 18 assembly on the lower bearing chamber 12, repeating steps 4) and 5), since the shim 10 is installed at this time and the thickness of the shim 10 is precisely calculated, the gap a between the thrust disc 13 and the primary thrust shoe assembly 5 should meet the final requirements at this time
0.2mm≤A≤0.22mm
The clearance A between the thrust disc 13 and the main thrust shoe assembly 5 is the axial clearance of the thrust bearing, so that the measurement and adjustment of the axial clearance of the thrust bearing are completed.
The adjustable range of the gasket 10 is 0.03mm to 0.75mm.
Claims (2)
1. The method for measuring and adjusting the axial clearance of the shaft seal type nuclear main pump thrust bearing is characterized by comprising the following steps of: the thrust disk is clamped by the pressure disk and the dial indicator is used for measuring, so that the axial clearance of the thrust bearing is accurately measured and adjusted, and the method comprises the following steps:
1) And (3) finishing assembly of a pressure disc: placing an upper pressure disc (6) on a thrust disc (13), placing a mandrel (3) on the upper pressure disc (6), mounting a lower pressure disc (11) on the thrust disc (13), tightening the mandrel (3) through the lower pressure disc (11) by adopting a second hexagonal head bolt (7), placing a measuring disc (2) on the mandrel (3), and mounting and tightening the first hexagonal head bolt (1);
2) Measuring whether the heights TD1 of all the main thrust tile assemblies (5) are 69.99mm or less and the heights TD1 are 70mm or less, and when the heights TD1 do not meet the requirements, replacing the existing main thrust tile assemblies (5) and using new main thrust tile assemblies; measuring whether the heights TD2 of all the auxiliary thrust tile assemblies (9) are 69.99mm or less and the heights TD2 are 70mm or less, and when the heights TD2 do not meet the requirements, replacing the existing auxiliary thrust tile assemblies (9) and using new auxiliary thrust tile assemblies;
3) The second limit bolt (8) is installed in the lower bearing chamber (12) and screwed down, the auxiliary thrust tile assembly (9) is installed on the lower bearing chamber (12), and the thrust disc (13) is placed on the auxiliary thrust tile assembly (9); an inner hexagon screw (17) is adopted to assemble and screw an upper bearing chamber (18) and a base (16), a first limit bolt (4) is installed in the base (16) and screwed, a stud (15) is installed in the base (16) and screwed, a main thrust tile assembly (5) is installed on the base (16), a hexagon nut (14) is installed and screwed to fix the main thrust tile assembly (5), and the upper bearing chamber (18) is installed on a lower bearing chamber (12);
4) Symmetrically installing two dial indicator magnetic bases (19) on an upper bearing chamber (18), installing two dial indicators (20) on the dial indicator magnetic bases (19) and contacting with a measuring disc (2), and zeroing the dial indicators (20);
5) Slowly lifting the mandrel (3) to drive the thrust disc (13) to move upwards, observing the change of the values of the dial indicators (20), stopping lifting the mandrel (3) until the values of the dial indicators (20) are not changed any more, wherein the values of the two dial indicators (20) are consistent, the value of the dial indicator (20) is the gap A between the current thrust disc (13) and the main thrust tile assembly (5), and recording the gap A at the moment, and the gap A is the axial gap of the thrust bearing;
6) Since step 5) does not provide for the mounting of a shim (10) when measuring the axial clearance of the thrust bearing, the clearance A should be such that
0.25mm＜A＜0.97mm
And the final qualified gap A needs to be satisfied
0.2mm≤A≤0.22mm
So the axial clearance of the thrust bearing measured at the moment is too large and does not meet the final requirement, and a gasket (10) is required to be arranged between the thrust shoe assembly (9) and the lower bearing chamber (12) so as to adjust the axial clearance of the thrust bearing;
7) Dismantling the dial indicator magnetic base (19) and the dial indicator (20), dismantling the upper bearing chamber (18) and the thrust disc (13), wherein: the upper bearing chamber (18) is detached from the first limit bolt (4), the main thrust tile assembly (5), the hexagonal nut (14), the stud (15), the base (16) and the inner hexagonal screw (17) as a whole, and the thrust disc (13) is detached from the first hexagonal bolt (1), the measuring disc (2), the mandrel (3), the upper pressure disc (6), the second hexagonal bolt (7) and the lower pressure disc (11) as a whole; removing the auxiliary thrust shoe assembly (9);
8) Calculating the thickness A of the gasket (10) to be 0.21mm according to the gap A recorded in the step 5)
Placing a gasket (10) on the lower bearing chamber (12);
9) Reinstalling the secondary thrust shoe assembly (9) and compressing the shim (10), placing the thrust disc (13) assembly removed in step 7) on the secondary thrust shoe assembly (9), mounting the upper bearing chamber (18) assembly on the lower bearing chamber (12), repeating steps 4) and 5), since the shim (10) is now installed and the thickness of the shim (10) is precisely calculated, the gap a between the thrust disc (13) and the primary thrust shoe assembly (5) should now meet the final requirements
0.2mm≤A≤0.22mm
The clearance A between the thrust disc (13) and the main thrust tile assembly (5) is the axial clearance of the thrust bearing, so that the measurement and adjustment of the axial clearance of the thrust bearing are completed.
2. The method for measuring and adjusting the axial clearance of the shaft seal type nuclear main pump thrust bearing according to claim 1, wherein the method comprises the following steps: the adjustable range of the gasket (10) is 0.03 mm-0.75 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398611.2A CN114136186B (en) | 2021-11-24 | 2021-11-24 | Method for measuring and adjusting axial clearance of shaft seal type nuclear main pump thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111398611.2A CN114136186B (en) | 2021-11-24 | 2021-11-24 | Method for measuring and adjusting axial clearance of shaft seal type nuclear main pump thrust bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114136186A CN114136186A (en) | 2022-03-04 |
| CN114136186B true CN114136186B (en) | 2024-05-17 |
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| CN202111398611.2A Active CN114136186B (en) | 2021-11-24 | 2021-11-24 | Method for measuring and adjusting axial clearance of shaft seal type nuclear main pump thrust bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103785892A (en) * | 2014-01-22 | 2014-05-14 | 中国重型机械研究院股份公司 | Lateral clearance adjustment mechanism used for high precision disk shears |
| CN109405714A (en) * | 2018-12-13 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump thrust disc measurement of fit clearance device |
| CN210603112U (en) * | 2019-08-30 | 2020-05-22 | 福建福清核电有限公司 | Device for adjusting gap of thrust bearing of reactor coolant pump of nuclear power plant |
| CN211398363U (en) * | 2019-10-31 | 2020-09-01 | 苏州新智机电工业有限公司 | Novel automobile air conditioner compressor torque limiter |
| CN113418794A (en) * | 2021-06-21 | 2021-09-21 | 安阳师范学院 | Pressure test device and test method for steel fiber rubber concrete |
| CN113688472A (en) * | 2021-08-06 | 2021-11-23 | 辽宁红沿河核电有限公司 | Method and system for acquiring thrust bearing clearance of main pump motor |
-
2021
- 2021-11-24 CN CN202111398611.2A patent/CN114136186B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785892A (en) * | 2014-01-22 | 2014-05-14 | 中国重型机械研究院股份公司 | Lateral clearance adjustment mechanism used for high precision disk shears |
| CN109405714A (en) * | 2018-12-13 | 2019-03-01 | 哈尔滨电气动力装备有限公司 | Reactor coolant pump thrust disc measurement of fit clearance device |
| CN210603112U (en) * | 2019-08-30 | 2020-05-22 | 福建福清核电有限公司 | Device for adjusting gap of thrust bearing of reactor coolant pump of nuclear power plant |
| CN211398363U (en) * | 2019-10-31 | 2020-09-01 | 苏州新智机电工业有限公司 | Novel automobile air conditioner compressor torque limiter |
| CN113418794A (en) * | 2021-06-21 | 2021-09-21 | 安阳师范学院 | Pressure test device and test method for steel fiber rubber concrete |
| CN113688472A (en) * | 2021-08-06 | 2021-11-23 | 辽宁红沿河核电有限公司 | Method and system for acquiring thrust bearing clearance of main pump motor |
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| Publication number | Publication date |
|---|---|
| CN114136186A (en) | 2022-03-04 |
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