CN205719517U - A kind of reactor coolant pump off-axis monitoring system of nuclear power station - Google Patents
A kind of reactor coolant pump off-axis monitoring system of nuclear power station Download PDFInfo
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- CN205719517U CN205719517U CN201620406490.XU CN201620406490U CN205719517U CN 205719517 U CN205719517 U CN 205719517U CN 201620406490 U CN201620406490 U CN 201620406490U CN 205719517 U CN205719517 U CN 205719517U
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- axis
- speed probe
- tach signal
- power station
- reactor coolant
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Abstract
This utility model provides the reactor coolant pump off-axis monitoring system of a kind of nuclear power station, and it includes speed probe and comparative analysis module.The reactor coolant pump off-axis monitoring system of the nuclear power station that this utility model provides, judge that the method for pump off-axis is different from traditional core power station uses low discharge, use the tach signal of the top and bottom of speed probe measurement axis, and two signals are introduced comparative analysis module, judge whether axle ruptures by comparing the top and bottom signal of axle, and send off-axis warning, thus remind operator to pay close attention to the running status of unit, to make correct judgement, support for running to provide.
Description
Technical field
This utility model relates to nuclear power plant reactor coolant system, is specifically related to the reactor of a kind of nuclear power station
Cooling medium pump off-axis monitoring system.
Background technology
In design of nuclear power plant, it is desirable to the coolant flow in reactor coolant loop is monitored in real time,
The situation of reactor coolant pump cisco unity malfunction to be considered in the transient analysis.Cause reactor coolant
The reason of pump cisco unity malfunction has multiple, such as loss of power, pump mechanical breakdown, pump card rotor and off-axis
Deng.After pump can not work, will result directly in reactor coolant flow reduction, directly affect the peace of reactor
Full stable operation.Therefore, the duty of monitoring reactor coolant pump is particularly important.At traditional nuclear power
Stand in reactor coolant loop, the duty of pump can be judged by the flow of monitoring reactor coolant.
During some heap-type is designed, reactor coolant loop may be not provided with effusion meter, therefore need design another
Outer means judge the running status of pump.
Utility model content
This utility model, for the deficiencies in the prior art, proposes the reactor coolant pump off-axis of a kind of nuclear power station
Monitoring system.
The reactor coolant pump off-axis monitoring system of nuclear power station includes:
Speed probe；Described speed probe is arranged on the top and bottom of axle, is configured for measurement axis
The rotating speed of top and bottom concurrently serve end tach signal and lower end tach signal；
Comparative analysis module；Described comparative analysis module be configured to accept described upper end tach signal and under
End tach signal, and judge whether axle ruptures by relatively described upper end tach signal and lower end tach signal；
If axle fracture, described comparative analysis module is configured output speed signal, and sends off-axis alarm signal
To remind operator to pay close attention to the running status of unit, in order to make correct judgement.
Preferably, described speed probe includes upper end speed probe；Described upper end speed probe is arranged
In the upper end of axle, rotating speed for the upper end of measurement axis also sends described upper end tach signal.
Preferably, described speed probe includes lower end speed probe；Described lower end speed probe is arranged
In the lower end of axle, rotating speed for the lower end of measurement axis also sends described lower end tach signal.
Compared with prior art, this utility model has the advantages that
1, the reactor coolant pump off-axis monitoring system of the nuclear power station that this utility model provides, with tradition nuclear power
The method of pump off-axis is different to use low discharge to judge in standing, and uses the top and bottom of speed probe measurement axis
Tach signal, and two signals are introduced comparative analysis modules, by comparing the top and bottom signal of axle
Judge whether axle ruptures, and send off-axis warning, thus remind operator to pay close attention to the running status of unit, with
Just make correct judgement, support for running to provide.
Accompanying drawing explanation
Fig. 1 is that the reactor coolant pump off-axis monitoring of the nuclear power station meeting this utility model preferred embodiment is
The schematic diagram of system.
Detailed description of the invention
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with attached
This utility model is described in further detail by figure and detailed description of the invention.
As it is shown in figure 1, the reactor coolant pump off-axis monitoring system of nuclear power station includes:
Speed probe；Described speed probe includes upper end speed probe 2；Described upper end speed probe
2 upper ends being arranged on axle 1, rotating speed for the upper end of measurement axis 1 also sends described upper end tach signal 4.
Described speed probe also includes lower end speed probe 3；Described lower end speed probe 3 is arranged on axle 1
Lower end, rotating speed for the lower end of measurement axis 1 also sends described lower end tach signal 5.
Comparative analysis module 6；Described comparative analysis module 6 is configured to accept described upper end tach signal 4
With lower end tach signal 5, and judge axle by relatively described upper end tach signal 4 and lower end tach signal 5
Whether rupture；
After axle 1 ruptures, there is deviation in axle upper end tach signal 4 and axle lower end tach signal 5, logical
Cross after comparative analysis module 6 compares, output speed signal 7, and send off-axis alarm signal 8 to remind manipulation
Member pays close attention to the running status of unit, in order to make correct judgement.
Compared with prior art, the present embodiment has the advantages that
1, the reactor coolant pump off-axis monitoring system of the nuclear power station that the present embodiment provides, with traditional core power station
Middle employing low discharge judges that the method for pump off-axis is different, uses the top and bottom of speed probe measurement axis
Tach signal, and two signals are introduced comparative analysis module, sentence by comparing the top and bottom signal of axle
Whether off-axis ruptures, and sends off-axis warning, thus reminds operator to pay close attention to the running status of unit, in order to
Make correct judgement, support for running to provide.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is
With the difference of other embodiments, between each embodiment, identical similar portion sees mutually.For
For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so the comparison described is simple
Single, relevant part sees method part and illustrates.
Each specifically should being used for can be used different methods to realize described merit by those skilled in the art
Can, but this realization is it is not considered that exceed scope of the present utility model.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to utility model
The spirit and scope of utility model.So, if these amendments of the present utility model and modification belong to this practicality
Within the scope of novel claim and equivalent technologies thereof, then this utility model be also intended to include these change and
Including modification.
Claims (3)
1. the reactor coolant pump off-axis monitoring system of a nuclear power station, it is characterised in that including:
Speed probe；Described speed probe is arranged on the top and bottom of axle, is configured for measurement axis
The rotating speed of top and bottom concurrently serve end tach signal and lower end tach signal；
Comparative analysis module；Described comparative analysis module be configured to accept described upper end tach signal and under
End tach signal, and judge whether axle ruptures by relatively described upper end tach signal and lower end tach signal；
If axle fracture, described comparative analysis module is configured output speed signal, and sends off-axis alarm signal
To remind operator to pay close attention to the running status of unit, in order to make correct judgement.
2. the reactor coolant pump off-axis monitoring system of nuclear power station as claimed in claim 1, its feature exists
In, described speed probe includes upper end speed probe；Described upper end speed probe is arranged on the upper of axle
End, rotating speed for the upper end of measurement axis also sends described upper end tach signal.
3. the reactor coolant pump off-axis monitoring system of nuclear power station as claimed in claim 1, its feature exists
In, described speed probe includes lower end speed probe；Described lower end speed probe is arranged under axle
End, rotating speed for the lower end of measurement axis also sends described lower end tach signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406490.XU CN205719517U (en) | 2016-05-06 | 2016-05-06 | A kind of reactor coolant pump off-axis monitoring system of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620406490.XU CN205719517U (en) | 2016-05-06 | 2016-05-06 | A kind of reactor coolant pump off-axis monitoring system of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719517U true CN205719517U (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620406490.XU Active CN205719517U (en) | 2016-05-06 | 2016-05-06 | A kind of reactor coolant pump off-axis monitoring system of nuclear power station |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841946A (en) * | 2016-05-06 | 2016-08-10 | 上海核工程研究设计院 | Reactor coolant pump shaft breakage monitoring system of nuclear power station |
-
2016
- 2016-05-06 CN CN201620406490.XU patent/CN205719517U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841946A (en) * | 2016-05-06 | 2016-08-10 | 上海核工程研究设计院 | Reactor coolant pump shaft breakage monitoring system of nuclear power station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |