CN209085506U - Reactor coolant pump thrust disc measurement of fit clearance device - Google Patents
Reactor coolant pump thrust disc measurement of fit clearance device Download PDFInfo
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- CN209085506U CN209085506U CN201822086572.2U CN201822086572U CN209085506U CN 209085506 U CN209085506 U CN 209085506U CN 201822086572 U CN201822086572 U CN 201822086572U CN 209085506 U CN209085506 U CN 209085506U
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- tool shaft
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- pressure disk
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Abstract
The utility model relates to a kind of reactor coolant pump thrust disc measurement of fit clearance devices, upper pressure disk (3) is mounted on tool shaft (4), bolt (1) passes through the threaded hole below low pressure disk (2) and tool shaft (4) and is equipped with, and thrust disc (7.2) is mounted between upper pressure disk (3) and low pressure disk (2)；Axial spacer ring (5) is installed by hex head screw (6) above tool shaft (4), lifting lug is installed in the threaded hole above tool shaft (4), dial gauge is mounted in axial gap ring (5) plane.The utility model can quick and precisely measure the gap between thrust disc and main thrust watt using this covering device；Whole process short time consumption is short, and controllability is strong, needs manpower few, easy to operate, is easily installed and dismantles；The utility model equipment therefor is easily manufactured, is conducive to save the cost.
Description
Technical field:
The utility model relates to reactor coolant pump thrust disc measurement of fit clearance devices.
Background technique:
Million millions reactor coolant pump thrust bearings are one of the key links that core main pump keeps stable operation, are pushed away
The installation gap of power disk and main thrust watt influences oil film thickness, oil film rigidity and damping characteristic etc. during bearing operation；Peace
Gap is unqualified will cause thrust mill damage for dress, will cause tile kilning when serious, influences the stable operation in main pump and power station.Thrust disc
Installation clearance requirement between main thrust watt is 0.2mm~0.225mm.In thrust bearing trial assembly, it need to accurately measure and push away
Installation gap between power disk and main thrust watt, and it is adjusted to specified value range.Between previous country's thrust disc and main thrust watt
The measurement method for installing gap is mostly to carry out independent measurement to thrust bearing single component, is then added using bearing chamber distance
Subtract, it is larger that this method repeatedly measures overlay error；Process very complicated when practical operation, heavy workload and it cannot be guaranteed that measurement
The accuracy of numerical value.
Summary of the invention:
The purpose of the utility model is to provide a kind of reactor coolant pump thrust disc measurement of fit clearance devices, limited
Guarantee that thrust disc is steadily gone up and down in space, and it is safe and accurate, easily and fast to can be realized measurement.The technology of the utility model
Scheme is: a kind of reactor coolant pump thrust disc measurement of fit clearance device, which is vertical structure, upper pressure disk
(3) it is mounted on tool shaft (4), bolt (1) passes through the threaded hole below low pressure disk (2) and tool shaft (4) and is equipped with, and pushes away
Power disk (7.2) is mounted between upper pressure disk (3) and low pressure disk (2)；By hex head screw (6) above tool shaft (4)
Axial spacer ring (5) is installed, lifting lug is installed, it is flat that dial gauge is mounted on axial gap ring (5) in the threaded hole above tool shaft (4)
On face, with increase and decrease gasket (7.3) between thrust disc (7.2) and main thrust watt (7.1).
Utility model works principle:
The utility model is based on 1000MW nuclear power station main pump, and the trial assembly stage before thrust bearing is formally installed needs to measure
Installation gap between thrust disc (7.2) and main thrust watt (7.1), it is desirable that be worth for 0.2mm~0.225mm.Pass through tool shaft
(4), it is special to form a set of clearance measurement for upper pressure disk (3), low pressure disk (2), axial gap ring (5) and hexagon-headed bolt
Use tool.Thrust disc (7.2) is stuck between upper pressure disk (3) and low pressure disk (2), is fastened with hexagon-headed bolt (1),
Package unit and thrust disc (7.2) form the device that can stablize lifting in this way.Lifting lug is mounted on tool shaft (4) upper end
In threaded hole, crane slowly promotes package unit until thrust disc (7.2) and main thrust watt (7.1) full contact, passes through at this time
The dial gauge being placed on axial gap ring (5) can measure the displacement of its vertical direction, as thrust disc (7.2) and main thrust
Gap between watt (7.1).Between being adjusted between thrust disc (7.2) and main thrust watt (7.1) by increase and decrease gasket (7.3) again
Gap reaches specified value range.Whole process can guarantee thrust disc (7.2) steady lifting in a limited space, and realize measurement peace
Entirely, accurately, easily and fast.
The beneficial effects of the utility model are:
(1) as shown in Fig. 2, measuring device structure involved in the utility model is simple, be not required to each single-piece of bearing into
Row re-measures, and saves manpower, shortens working hours；
(2) measurement numerical value is accurate, and measuring process is few, and dial gauge measures caused by can avoid error superposition and artificial measurement
Error；Precision is high, and controllability is strong.
(3) the installation gap of thrust disc and main thrust watt does not influence whether oil film thickness, oil during bearing operation precisely
Film rigidity and damping characteristic etc.；Gap is unqualified will cause thrust mill damage for installation, will cause tile kilning when serious, influence main pump and
The stable operation in power station.The utility model can substantially reduce due to thrust disc and main thrust watt installation gap precisely caused by
Economic loss.
(4) the utility model is that 1000MW nuclear power station main pump thrust bearing is designed, during thrust bearing trial assembly,
It can guarantee the installation gap safe and accurate, easily and fast measured between thrust disc and main thrust watt；Whole process consumption
When it is short, need space small, need manpower few, it is easy to operate；The manufacture of measuring device involved in the utility model is easy, it is desirable that is added
Work precision is relatively low, is conducive to control cost, saves expense.
Detailed description of the invention
Fig. 1 is thrust disc measurement of fit clearance schematic diagram
Fig. 2 is thrust disc measurement of fit clearance device installation diagram
Fig. 3 is tool shaft topology view
Specific embodiment
It is as shown in Figure 1 a kind of reactor coolant pump thrust disc measurement of fit clearance device, it is characterized in that: the device is
Vertical structure, upper pressure disk 3 are mounted on tool shaft 4, and bolt 1 passes through the threaded hole of 4 lower section of low pressure disk 2 and tool shaft
Equipped, thrust disc 7.2 is mounted between upper pressure disk 3 and low pressure disk 2；Pacified by hex head screw 64 top of tool shaft
Axial gap ring 5 is filled, lifting lug is installed in the threaded hole of 4 top of tool shaft, dial gauge is mounted in 5 plane of axial gap ring, pushes away
With increase and decrease gasket 7.3 between power disk 7.2 and main thrust watt 7.1.
The trial assembly stage before thrust bearing is formally installed need to measure the installation between thrust disc 7.2 and main thrust watt 7.1
Gap, it is desirable that be worth for 0.2mm~0.225mm.As shown in Fig. 2, passing through tool shaft 4, upper pressure disk 3, low pressure disk 2, axis
A set of gap measuring apparatus is formed to spacer ring 5 and hexagon-headed bolt.Thrust disc 7.2 is stuck in upper pressure disk 3 and lower part pressure
It between power disk 2, is fastened with hexagon-headed bolt 1, such package unit and thrust disc 7.2 form the device that can stablize lifting.
As shown in figure 3, lifting lug is mounted in the threaded hole of 4 upper end of tool shaft, crane slowly promotes package unit until thrust disc 7.2
It is completely attached to main thrust watt 7.1, can measure its vertical direction by the dial gauge being placed on axial gap ring 5 at this time
Displacement, the as gap between thrust disc 7.2 and main thrust watt 7.1.Thrust disc 7.2 and master are adjusted by increase and decrease gasket 7.3
Gap between thrust bearing shoe valve 7.1 reaches specified value range.
Claims (1)
1. a kind of reactor coolant pump thrust disc measurement of fit clearance device, it is characterized in that: the device is vertical structure, top
Pressure disc (3) is mounted on tool shaft (4), and bolt (1) passes through low pressure disk (2) and matches with the threaded hole below tool shaft (4)
Dress, thrust disc (7.2) are mounted between upper pressure disk (3) and low pressure disk (2)；By turret head spiral shell above tool shaft (4)
It follows closely (6) and axial spacer ring (5) is installed, lifting lug is installed in the threaded hole above tool shaft (4), dial gauge is mounted on axial gap ring
(5) in plane, with increase and decrease gasket (7.3) between thrust disc (7.2) and main thrust watt (7.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086572.2U CN209085506U (en) | 2018-12-13 | 2018-12-13 | Reactor coolant pump thrust disc measurement of fit clearance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822086572.2U CN209085506U (en) | 2018-12-13 | 2018-12-13 | Reactor coolant pump thrust disc measurement of fit clearance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209085506U true CN209085506U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822086572.2U Active CN209085506U (en) | 2018-12-13 | 2018-12-13 | Reactor coolant pump thrust disc measurement of fit clearance device |
Country Status (1)
| Country | Link |
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| CN (1) | CN209085506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2018
- 2018-12-13 CN CN201822086572.2U patent/CN209085506U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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