CN209181885U - A kind of calibration equipment based on nuclear power plant's penetration piece test flow - Google Patents
A kind of calibration equipment based on nuclear power plant's penetration piece test flow Download PDFInfo
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- CN209181885U CN209181885U CN201920186579.3U CN201920186579U CN209181885U CN 209181885 U CN209181885 U CN 209181885U CN 201920186579 U CN201920186579 U CN 201920186579U CN 209181885 U CN209181885 U CN 209181885U
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Abstract
The utility model discloses a kind of calibration equipments based on nuclear power plant's penetration piece test flow, comprising: import quick coupling；Quick coupling is exported, corresponding suspended body flowmeter is connected on penetration piece testing equipment or micro-gas leakage amount is measured equipment；It is disposed with pressure regulator valve, inlet valve, mass flowmenter, mode switching valve, flow between import quick coupling and outlet quick coupling and adjusts needle valve and outlet valve；Wherein, mode switching valve is for carrying out pattern switching；The output end of inlet valve is connected with precise digital display pressure gauge, the input terminal of mode switching valve is connected with the output end of mass flowmenter, first output end of mode switching valve is connected with the input terminal that flow adjusts needle valve, the second output terminal of mode switching valve is connected with the input terminal of outlet valve, and the output end that flow adjusts needle valve is connected with the input terminal of outlet valve.The calibration equipment of the utility model can accurately examine and determine the flowmeter on penetration piece testing equipment.
Description
Technical field
The utility model is to repair technical field of test equipment about nuclear power station, is passed through especially with regard to one kind for nuclear power plant
Wear the calibration equipment of part test flow meter.
Background technique
The each overhaul of nuclear power station unit station requires to carry out penetration piece test, to verify the complete of third road safety curtain containment
Whole property, penetration piece test are mainly carried out using dedicated testing equipment, and nuclear power plant's penetration piece testing equipment mainly includes pressure tune
Save valve, pressure gauge, flowmeter (predominantly suspended body flowmeter includes large, medium and small three ranges), pipe joint and valve etc..By
It uses always, is contacted for a long time with the medium of high radioactivity (water, air), test is set in radiation control zone in penetration piece testing equipment
It need to periodically be examined for there are the risks of biggish radiocontamination since the suspended body flowmeter on testing equipment belongs to measurement instrument
It is fixed, but each nuclear power plant does not have relevant standard metrology appliance, can not examine and determine；Suspended body flowmeter is just stained with radioactivity once use
Dirty risk, can not also dismantle and send outer inspection.
For this purpose, the suspended body flowmeter on penetration piece testing equipment can only carry out re-testing periods change, during use no longer into
Row calibrating.But on penetration piece testing equipment part suspended body flowmeter be used for a long time after, precision can reduce, due to can not inspection,
It not can determine that the flowmeter that specific precision reduces, the method for replacement suspended body flowmeter can only be taken to guarantee its precision, but cost
It is higher.In order to ensure the relative precision of suspended body flowmeter, it is (floating that user of service periodically can carry out series connection comparison to suspended body flowmeter
After the series connection of subflow meter, mutually compare), if result in regulation deviation range if (± 5%) it is qualified, if beyond unqualified,
Need to change new suspended body flowmeter.
But there are certain drawbacks for the method for suspended body flowmeter series connection comparison, are mainly manifested in:
1) connect comparison process in, such as multiple suspended body flowmeters degrade simultaneously, although deviation within ± 5%, not
It is able to satisfy required precision, this may will lead to erroneous judgement comparison result qualification, in turn result in penetration piece test data inaccuracy.
It 2), can not be specific to the suspended body flowmeter of degradation, it is sometimes desirable to multiple or even full when series connection comparison deviation surpasses ± 5%
The suspended body flowmeter that portion more renews, replacement cost are high.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of calibration equipment based on nuclear power plant's penetration piece test flow, energy
It is enough that flowmeter on penetration piece testing equipment is accurately examined and determine.
To achieve the above object, the utility model provides a kind of verification dress based on nuclear power plant's penetration piece test flow
It sets, comprising: import quick coupling is connected to compressed gas cylinder or live gas source；Quick coupling is exported, is connected to and runs through
Corresponding suspended body flowmeter or micro-gas leakage amount are measured equipment on part testing equipment；Import quick coupling and outlet are quick
It is disposed with pressure regulator valve, inlet valve, mass flowmenter, mode switching valve, flow between connector and adjusts needle valve and outlet valve；
Wherein, mode switching valve includes suspended body flowmeter checking mode and measurement micro-gas leakage for carrying out pattern switching, mode
Amount mode；And wherein, the output end of inlet valve is connected with precise digital display pressure gauge, for showing the pressure of calibration equipment, mould
The input terminal of formula switching valve is connected with the output end of mass flowmenter, the first output end and flow metering needle of mode switching valve
The input terminal of type valve is connected, and the second output terminal of mode switching valve is connected with the input terminal of outlet valve, and flow adjusts needle-like
The output end of valve is connected with the input terminal of outlet valve.
In a preferred embodiment, when calibration equipment is for suspended body flowmeter calibrating verification, quick coupling is exported
It is connected to suspended body flowmeter, opens inlet valve, when adjusting pressure regulator valve makes precise digital display pressure gauge reach 4.2bar.g, mode turns
It changes valve and is switched to suspended body flowmeter checking mode, to verify suspended body flowmeter.
In a preferred embodiment, the output end of inlet valve is also connected with relief valve, and relief valve will be for that will verify dress
Pressure venting in setting, relief valve are connected with pressure relief opening quick coupling, and pressure relief opening quick coupling is for connecting pressure release gas line.
In a preferred embodiment, it is provided with filter between inlet valve and mass flowmenter, is used for filtered inlet
Impurity in gas.
In a preferred embodiment, calibration equipment further includes by-passing valve, the input terminal of by-passing valve and filter it is defeated
Outlet is connected, and the output end of by-passing valve is connected with the input terminal of outlet quick coupling.
In a preferred embodiment, when to calibration equipment pressure release, connection can be passed through at pressure relief opening quick coupling
Rubber hose, and by opening by-passing valve and relief valve for the pressure venting in calibration equipment.
In a preferred embodiment, the output end of inlet valve is also connected with safety valve, when the pressure in calibration equipment
Higher than safety valve pressure threshold when, being capable of automatic venting pressure.
In a preferred embodiment, the accuracy class of precise digital display pressure gauge is 0.05 grade.
In a preferred embodiment, the accuracy class of mass flowmenter is 1.0 grades.
Compared with prior art, the calibration equipment tool according to the present utility model based on nuclear power plant's penetration piece test flow
Have the advantages that: the utility model can individually verify nuclear power plant's penetration piece testing equipment with suspended body flowmeter,
Both it can solve the problems, such as that existing suspended body flowmeter mutually compared result inaccuracy, and can also specifically navigate to unqualified float-type
Meter, when avoiding unqualified due to comparison result in traditional comparison method, all may more renew the hair of suspended body flowmeter situation
It is raw, the quantity of spare suspended body flowmeter replacement is reduced, is reduced costs.
Detailed description of the invention
Fig. 1 is former according to the calibration equipment based on nuclear power plant's penetration piece test flow of one embodiment of the utility model
Manage schematic diagram.
Main appended drawing reference explanation:
1- import quick coupling, 2- pressure regulator valve, 3- inlet valve, 4- relief valve, 5- pressure relief opening quick coupling, 6- safety valve,
7- precise digital display pressure gauge, 8- filter, 9- mass flowmenter, 10- mode switching valve, 11- flow adjust needle valve, and 12- goes out
Mouth valve, 13- by-passing valve, 14- export quick coupling.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, according to the school based on nuclear power plant's penetration piece test flow of the preferred embodiments of the present invention
Experiment device, comprising: import quick coupling 1 and outlet quick coupling 14, import quick coupling 1 and outlet quick coupling 14 between according to
Secondary pressure regulator valve 2, inlet valve 3, mass flowmenter 9, mode switching valve 10, the flow of being provided with adjusts needle valve 11 and outlet valve 12.
Wherein, import quick coupling 1 is connected to compressed gas cylinder or live gas source, and outlet quick coupling 14 is connected to penetration piece test
Corresponding suspended body flowmeter or micro-gas leakage amount are measured equipment in equipment.Wherein, mode switching valve is for carrying out mode
Switching, mode include suspended body flowmeter checking mode and measurement micro-gas leakage amount mode.And wherein, inlet valve 3 is defeated
Outlet is connected with precise digital display pressure gauge 7, for showing the pressure of calibration equipment, the input terminal and quality stream of mode switching valve 10
The output end of meter 9 is connected, and the first output end of mode switching valve 10 is connected with the input terminal that flow adjusts needle valve 11,
The second output terminal of mode switching valve 10 is connected with the input terminal of outlet valve 12, and flow adjusts the output end of needle valve 11 and goes out
The input terminal of mouth valve 12 is connected.
In above scheme, the output end of inlet valve 3 is also connected with relief valve 4, and relief valve 4 is used for the pressure in calibration equipment
Power venting, relief valve 4 are connected with pressure relief opening quick coupling 5, and pressure relief opening quick coupling 5 is for connecting pressure release gas line.
In a preferred embodiment, filter 8 is provided between inlet valve 3 and mass flowmenter, for filter into
Impurity in gas, with quality of protection flowmeter 9.
In a preferred embodiment, calibration equipment further includes by-passing valve 13, the input terminal and filter 8 of by-passing valve 13
Output end be connected, the output end of by-passing valve 13 is connected with the input terminal of outlet quick coupling 14.
The calibration equipment of the utility model carries out pattern switching, it can be achieved that setting to penetration piece test by mode switching valve 10
The calibrating verification and the measurement big function of micro-gas leakage two of standby upper suspended body flowmeter, will be made below illustrating.
1, suspended body flowmeter checking mode: import quick coupling 1 is connected to compressed gas cylinder or live gas source, outlet are quick
Connector 14 is connected to corresponding suspended body flowmeter on penetration piece testing equipment, opens inlet valve 3, and adjusting pressure regulator valve 2 makes accurate number
Aobvious pressure gauge 7 reaches 4.2bar.g, and mode switching valve 10 is transformed into suspended body flowmeter checking mode, opens outlet valve 12, is delayed
The slow flow that adjusts adjusts needle valve 11, so that flow is reached check value, the stream being successively read on mass flowmenter 9 and suspended body flowmeter
Numerical quantity, to verify suspended body flowmeter.If the numerical bias of suspended body flowmeter and mass flowmenter within ± 5%, floats
The verification of subflow meter is qualified, otherwise replaces suspended body flowmeter, and verify again to the suspended body flowmeter after replacement.Float-type
After counting verifying work, inlet valve 3 is closed, the connection of import quick coupling 1 and compressed gas cylinder or live gas source is disconnected, is letting out
Press at outspoken quick coupling 5 one rubber hose of connection, open by-passing valve 13, and open relief valve 4, with will pass through part testing equipment and
Pressure venting in calibration equipment.When the pressure value that precise digital display pressure gauge 7 is shown is zero, indicate that pressure has been let out, most
Calibration equipment and penetration piece testing equipment are disconnected afterwards, pressure regulator valve 2 is recalled into zero-pressure force, flow is adjusted into needle valve 11
Closed position is recalled to, and successively closes inlet valve 3, relief valve 4 and outlet valve 12.
2, it measures micro-gas leakage amount mode: import quick coupling 1 is connected to compressed gas cylinder or live gas source, outlet
Quick coupling 14 is connected to measured equipment, and relief valve 4 is closed, and inlet valve 3 is opened, and adjusting pressure regulator valve 2 makes precise digital display pressure
Table 7 reaches measurement request pressure (usually 4.2bar.g), opens by-passing valve 13, carries out pressurising, pressurising to measured equipment
Cheng Zhong need to continue the pressure for observing precise digital display pressure gauge 7, when the pressure of precise digital display pressure gauge 7 reaches requirement measurement pressure
Afterwards, by-passing valve 13 is closed, mode switching valve 10 is transformed into measurement micro-gas leakage amount mode, outlet valve 12 is opened, stablizes
After a period of time, the numerical value of reading quality flowmeter 9 is as measured the leakage rate or slip of equipment.Measurement work terminates
Afterwards, inlet valve 3 is closed, the connection of import quick coupling 1 and compressed gas cylinder or live gas source is disconnected, in pressure relief opening quick coupling
A rubber hose is connected at 5, and opens by-passing valve 13, then open relief valve 4, by the pressure in measured equipment and calibration equipment
Venting.When the pressure value of the display of precise digital display pressure gauge 7 is zero, indicate pressure let out, finally by calibration equipment with
Measured equipment disconnects, and pressure regulator valve 2 is recalled to zero-pressure force, and successively closes inlet valve 3, relief valve 4,12 and of outlet valve
By-passing valve 13.
In a preferred embodiment, the output end of inlet valve 3 is also connected with safety valve 6, when the pressure in calibration equipment
It, being capable of automatic venting pressure when power is higher than the pressure threshold of safety valve 6.
In a preferred embodiment, the accuracy class of precise digital display pressure gauge is 0.05 grade, the essence of mass flowmenter
Spending grade is 1.0 grades.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (9)
1. a kind of calibration equipment based on nuclear power plant's penetration piece test flow, which is characterized in that the calibration equipment includes:
Import quick coupling is connected to compressed gas cylinder or live gas source；
Quick coupling is exported, corresponding suspended body flowmeter or micro-gas leakage amount quilt are connected on penetration piece testing equipment
Measuring device；
Be disposed between the import quick coupling and the outlet quick coupling pressure regulator valve, inlet valve, mass flowmenter,
Mode switching valve, flow adjust needle valve and outlet valve；
Wherein, for the mode switching valve for carrying out pattern switching, the mode includes suspended body flowmeter checking mode and measurement
Micro-gas leakage amount mode；
And wherein, the output end of the inlet valve is connected with precise digital display pressure gauge, for showing the pressure of the calibration equipment
Power, the input terminal of the mode switching valve are connected with the output end of the mass flowmenter, and the first of the mode switching valve
Output end is connected with the input terminal that the flow adjusts needle valve, the second output terminal of the mode switching valve and the outlet
The input terminal of valve is connected, and the output end that the flow adjusts needle valve is connected with the input terminal of the outlet valve.
2. calibration equipment as described in claim 1, which is characterized in that when the calibration equipment examines and determine school for suspended body flowmeter
When testing, the outlet quick coupling is connected to the suspended body flowmeter, opens the inlet valve, and adjusting the pressure regulator valve makes institute
When stating precise digital display pressure gauge and reaching 4.2bar.g, the mode switching valve is switched to the suspended body flowmeter checking mode,
To verify the suspended body flowmeter.
3. calibration equipment as described in claim 1, which is characterized in that the output end of the inlet valve is also connected with relief valve,
The relief valve is used for the pressure venting in the calibration equipment, and the relief valve is connected with pressure relief opening quick coupling, described
Pressure relief opening quick coupling is for connecting pressure release gas line.
4. calibration equipment as claimed in claim 3, which is characterized in that be arranged between the inlet valve and the mass flowmenter
There is filter, for the impurity in filtered inlet gas.
5. calibration equipment as claimed in claim 4, which is characterized in that the calibration equipment further includes by-passing valve, the bypass
The input terminal of valve is connected with the output end of the filter, and the output end of the by-passing valve is defeated with the outlet quick coupling
Enter end to be connected.
6. calibration equipment as claimed in claim 5, which is characterized in that when to the calibration equipment pressure release, the pressure relief opening
The verification can be filled by connecting rubber hose, and by opening the by-passing valve and the relief valve at quick coupling
Pressure venting in setting.
7. calibration equipment as claimed in claim 6, which is characterized in that the output end of the inlet valve is also connected with safety valve,
It, being capable of automatic venting pressure when the pressure in the calibration equipment is higher than the pressure threshold of the safety valve.
8. calibration equipment as described in claim 1, which is characterized in that the accuracy class of the precise digital display pressure gauge is 0.05
Grade.
9. calibration equipment as described in claim 1, which is characterized in that the accuracy class of the mass flowmenter is 1.0 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920186579.3U CN209181885U (en) | 2019-02-01 | 2019-02-01 | A kind of calibration equipment based on nuclear power plant's penetration piece test flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920186579.3U CN209181885U (en) | 2019-02-01 | 2019-02-01 | A kind of calibration equipment based on nuclear power plant's penetration piece test flow |
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| Publication Number | Publication Date |
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| CN209181885U true CN209181885U (en) | 2019-07-30 |
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| CN201920186579.3U Active CN209181885U (en) | 2019-02-01 | 2019-02-01 | A kind of calibration equipment based on nuclear power plant's penetration piece test flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674525A (en) * | 2022-03-09 | 2022-06-28 | 广西防城港核电有限公司 | Pipeline flow characteristic verification device and verification method thereof |
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2019
- 2019-02-01 CN CN201920186579.3U patent/CN209181885U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674525A (en) * | 2022-03-09 | 2022-06-28 | 广西防城港核电有限公司 | Pipeline flow characteristic verification device and verification method thereof |
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