CN206864194U - A kind of nuclear power station prevents the monitoring device of water tank negative pressure - Google Patents
A kind of nuclear power station prevents the monitoring device of water tank negative pressure Download PDFInfo
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- CN206864194U CN206864194U CN201720800188.7U CN201720800188U CN206864194U CN 206864194 U CN206864194 U CN 206864194U CN 201720800188 U CN201720800188 U CN 201720800188U CN 206864194 U CN206864194 U CN 206864194U
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- Prior art keywords
- pressure
- water tank
- monitoring device
- negative pressure
- pressure switch
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- 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
Abstract
The utility model is related to a kind of nuclear power station prevents the monitoring device of water tank negative pressure, water tank is deformed for preventing thin-walled pressure vessel draining from producing negative pressure during debugging, including the pressure switch for detecting water tank negative pressure in draining in real time, the warning device electrically connected with the pressure switch, and the power supply for being powered to the pressure switch and warning device；The pressure switch is alarmed when detecting that water tank negative pressure is less than preset value in the very first time by warning device, and real-time is high, highly reliable, and package unit is easy to assembly, using flexible, is easy to carry.
Description
Technical field
Nuclear power station pressure monitoring technical field is the utility model is related to, more particularly to it is a kind of thin applied to being prevented during debugging
The draining of wall container produces negative pressure and makes the monitoring device of the caisson negative pressure of water tank deformation.
Background technology
The known big volume thin-walled tank body of mega kilowatt nuclear power generators is more, such as：ASG001BA (auxiliary feedwater system water tank),
PTR001BA cooling and the processing system water tank of chamber and Spent Fuel Pool (reactor reload), RIS001/002/003BA (peaces
Safety injection tank is pressed in full injected system) etc..During unit regulation, in execution system flushing, pump discharge experiment, roof tank water quality regulation
And the united test stage, be often related to such thin-walled tank body fills drainage works.Due to during unit regulation, master control room phase
Pass function for monitoring is unavailable, and the upstream gas supply line and pressure-control valve of part tank body are also unavailable, easily in tank drains rank
Section makes tank body produce negative pressure, causes tank body to deform.
At present, the technical scheme that the tank drains stage is taken is mainly confirmation admission line valve switch state before draining
Whether correct, Field Force's monitoring during draining is set.Ensure that water tank enters the unimpeded of air circuit before draining, start to arrange
After water, go at admission line to confirm that whetheing there is air-flow sound or air-flow enters by inspection, and pass through the measures such as site setup fence
To prevent cross-operation from touching admission line valve or pipeline by mistake, water tank negative pressure is caused.
As can be seen that prior art, without effective monitoring means, staff can only be from air inlet during tank drains
Pipeline sound, sense of touch etc. judge whether admission line is unobstructed, and risk is higher, easily cause water tank to be deformed because of negative pressure.
Utility model content
For the deficiencies in the prior art, the utility model provides that a kind of real-time is high, highly reliable prevents water
The monitoring device of case negative pressure, deform water tank for preventing thin-walled pressure vessel draining from producing negative pressure during debugging, including：
Pressure switch, it is arranged on the pipeline connected with the water tank, for detecting the water tank in real time in draining
Negative pressure, when detection water tank negative pressure is less than a preset value, produce trigger signal；
Warning device, electrically connected with the pressure switch, for being alarmed after the trigger signal is received；
Power supply, electrically connected respectively with the pressure switch and warning device, for the pressure switch and warning device
Power supply.
Wherein, the warning device is audible-visual annunciator, and the power supply is dc source, wherein, the pressure switch
One end connects the audible-visual annunciator, and the other end of the pressure switch connects the dc source.
Wherein, the pressure switch is pressure vacuum gauge, including for connecting the connection end of the pipeline, is pressed for showing
The pressure gauge of power numerical value, and for connecting the first connecting wire of the dc source and for connecting the audible-visual annunciator
The second connecting wire.
Wherein, the connection end has the opening portion being connected with the pipeline, and the connection end and the pipeline are removable
It is tightly connected with unloading.
Wherein, there is adapter, for the pressure switch to be fixedly installed between the connection end and the pipeline
The tank top.
Wherein, impulse flexible pipe is sealedly connected between the connection end and the pipeline, for the pressure switch to be connect
To the draining valve of the water tank.
Wherein, first connecting wire and the second connecting wire are twisted-pair cable.
Wherein, the pressure gauge is provided with a pressure definite value, and the pressure definite value is used to pass through Portable pressure calibrating instrument
Verification checking is carried out to the pressure gauge.
Wherein, the direct current power source voltage is 12V.
Wherein, the audible-visual annunciator is provided with manual alarm switch, for closing or disconnecting the audible-visual annunciator.
A kind of monitoring device for preventing water tank negative pressure provided by the utility model has the following technical effect that：The monitoring
Device is powered using dc source, and detects negative pressure of the water tank in draining in real time using pressure switch, is less than there is negative pressure
Alarmed during preset value in the very first time by warning device, real-time is high, highly reliable, and package unit can be placed in tune
In the kit of examination personnel, it is easy to carry；Meanwhile the monitoring device using flexible, arbitrarily looked at the top of thin-walled pressure vessel
To an interface, you can pressure switch is connected into tank top, and external power supply need not be introduced, makes the use of the monitoring device
It is unrestricted.
Brief description of the drawings
Fig. 1 is the equipment catenation principle figure of monitoring device provided by the utility model；
Fig. 2 is the equipment scheme of erection of monitoring device provided by the utility model.
Embodiment
In order to solve nuclear power plant system debugging initial stage, water tank bleeding stage without effective pressure monitoring means cause water tank because
Negative pressure and the problem of the very big risk that is deformed, it is high, using flexible anti-that the utility model aims to provide a kind of real-time
The monitoring device of sealing case negative pressure, its core concept are：Powered using dc source, detect water tank in real time using pressure switch and exist
Negative pressure during draining, alarmed when water tank negative pressure is less than preset value by warning device.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, it is not used to limit the utility model.
Fig. 1 show the equipment catenation principle figure of monitoring device provided by the utility model, as illustrated, the monitoring dress
Put including pressure switch 1, warning device 2 and power supply 3.Wherein, one end connection warning device 2 of pressure switch 1, the other end connect
Connect power supply 3.
In actual use, the pressure switch 1 is arranged on the pipeline 6 at the top of water tank 5 to be monitored, for detecting in real time
Negative pressure of the water tank 5 in draining, when the negative pressure for detecting water tank 5 is less than a preset value, produce trigger signal；Warning device 2 exists
Alarmed after receiving trigger signal, and power supply 3 is used to power to pressure switch 1 and warning device 2.
Further, as shown in Fig. 2 the pressure switch 1 is pressure vacuum gauge, including the connection for connecting pipe 6
End 11, for showing the pressure gauge 12 of pressure value, and for connecting the first connecting wire 13 of power supply 3 and being reported for connecting
Second connecting wire 14 of alarm device 2.The connection end 11 has the opening portion that is connected with the pipeline 6, for pipeline 6
It is detachably connected.
The interface of the pipeline 6 can be a random interface at the top of thin-walled pressure vessel according to on-site actual situations, optional
Ground, including instrumentation tap, interim pipeline pipe cap, pipeline exhaust air intake valve etc., then by adapter, by the interface of pipeline 6 and
The connection end 11 is connected, you can the pressure gauge 12 is attached into the top of water tank 5, then passes through the first connecting wire 13 and second
Connecting wire 14 connects the power supply 3 and warning device 2 respectively, to ensure connecting wire and the fastness of joint during installation, keep away
Exempt from the monitoring device failure.
Wherein, the connecting wire 14 of the first connecting wire 13 and second uses twisted-pair cable, and warning device 2 is sound
Light crossing-signal, the audible-visual annunciator is provided with manual alarm switch, for closing or disconnecting the audible-visual annunciator.It is actual
During operation, audible-visual annunciator can be placed on outside factory building and wait the preferable place of environment, commissioning staff in factory building without detecting.
Wherein, power supply 3 uses dc source, it is preferable that the monitoring device uses 12V DC power supply, outer without introducing
Connect power supply so that the use of the monitoring device is unrestricted.In the case where pressure switch 1 does not trigger, whole loop does not connect
It is logical, dc source not power consumption；After pressure switch 1 triggers, the electricity of dc source can make the audible-visual annunciator start long enough
Time, to remind commissioning staff to intervene.
With reference to shown in Fig. 1, Fig. 2 and according to on-site actual situations, to the technical side of monitoring device provided by the utility model
Case is described in detail：
Before the monitoring device puts into onsite application, it is necessary first to pressure gauge 12 is verified, alternatively, this reality
Apply example to verify the definite value of pressure gauge 12 by Portable pressure calibrating instrument, it is ensured that it is when water tank negative pressure is less than preset value
Can effective action.Then pressure gauge 12 is connected on the interim pipeline or instrumentation tap at the top of water tank 5 by connection end 11, then led to
Twisted-pair cable connection dc source and audible-visual annunciator are crossed, and confirms that power supply 3 is charged, sound and light alarm fills the manual report of device
Alert device switch has been closed, and relevant connection is completed.
, it is necessary to trigger pressure switch 1 manually after the completion of the monitoring device connection, it is ensured that warning device 2 has already turned on, electricity
The normal power supply of source 3, the monitoring device energy normal operation.
Alternatively, the connection end 11 can be connected to by impulse flexible pipe on the interim pipeline or instrumentation tap at the top of water tank 5,
For pressure gauge 12 to be connected into any place, Field Force is facilitated to use.Further, pressure gauge 12 can be set by impulse flexible pipe
Put at draining valve, adjust drain discharge by observing the registration of pressure gauge 12, a people can complete drainage works, effectively improve
Drainage efficiency.
After the completion of the monitoring device puts into operation, water tank 5 can start draining, in drainage procedure, if the air inlet pipe of water tank 5
Line air inlet is not smooth or drain discharge is excessive, and water tank 5 can all produce negative pressure, when the negative pressure is less than the preset value of pressure switch 1,
Pressure switch 1 is triggered, and the whole circuit of the monitoring device is connected, and audible-visual annunciator starts to alarm immediately, reminds Field Force
Draining valve is closed, and checks whether admission line is unobstructed.If admission line non-obstruction phenomenon, illustrate the drain discharge of water tank 5
Excessive, commissioning staff need to suitably adjust draining valve to reduce drain discharge, until drain discharge and air inflow match, water tank 5
Untill no longer producing negative pressure.
It is understood that the monitoring device can realize the real time on-line monitoring of negative pressure during tank drains, if water tank
Negative pressure is less than preset value, and audible-visual annunciator sends alarm, reminds Field Force to turn or close draining valve down in time, and then solves to adjust
The problem of thin-walled pressure vessel is also easy to produce negative pressure and causes deformation during examination, and using mechanical triggering, no analog signal, in the absence of patrolling
Mistake is collected, reliability is higher.
Further, monitoring device provided by the utility model is applied to the draining of all thin-walled tank bodies of nuclear power generating sets
Journey, be included in ASG (auxiliary feedwater system), PTR cooling and the processing system of chamber and Spent Fuel Pool (reactor reload),
Used in multiple systems such as RIS (safety injection system), all appts totle drilling cost of the monitoring device is adapted to less than 500 yuan
Entry mass is purchased, application.
In summary, a kind of caisson negative pressure monitoring device provided by the utility model is powered using dc source, is utilized
Pressure switch detects negative pressure of the water tank in draining in real time, and is entered in the very first time by warning device when negative pressure is less than preset value
Row alarm, real-time is high, highly reliable, and package unit can be placed in the kit of commissioning staff, be easy to carry；Together
When, the monitoring device using flexible, an interface is arbitrarily found at the top of thin-walled pressure vessel, you can pressure switch is connected to water tank
Top, and external power supply need not be introduced, make the use of the monitoring device unrestricted.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within right of the present utility model.
Claims (10)
1. a kind of nuclear power station prevents the monitoring device of water tank negative pressure, for preventing thin-walled pressure vessel draining from producing negative pressure during debugging
And deform water tank, it is characterised in that including：
Pressure switch (1), it is arranged on the pipeline (6) connected with the water tank (5), exists for detecting the water tank (5) in real time
Negative pressure during draining, when detection water tank (5) negative pressure is less than a preset value, produce trigger signal；
Warning device (2), electrically connected with the pressure switch (1), for being alarmed after the trigger signal is received；
Power supply (3), electrically connected respectively with the pressure switch (1) and warning device (2), for the pressure switch (1) and
Warning device (2) is powered.
2. monitoring device according to claim 1, it is characterised in that the warning device (2) is audible-visual annunciator, described
Power supply (3) is dc source, wherein, one end of the pressure switch (1) connects the audible-visual annunciator, the pressure switch
(1) the other end connects the dc source.
3. monitoring device according to claim 2, it is characterised in that the pressure switch (1) is pressure vacuum gauge, including
For connecting the connection end (11) of the pipeline (6), for showing the pressure gauge (12) of pressure value, and it is described for connecting
The first connecting wire (13) of dc source and the second connecting wire (14) for connecting the audible-visual annunciator.
4. monitoring device according to claim 3, it is characterised in that the connection end (11) has and the pipeline (6)
The opening portion being connected, the connection end (11) are removably tightly connected with the pipeline (6).
5. monitoring device according to claim 4, it is characterised in that between the connection end (11) and the pipeline (6)
With adapter, for the pressure switch (1) to be fixedly installed at the top of the water tank (5).
6. monitoring device according to claim 4, it is characterised in that between the connection end (11) and the pipeline (6)
Impulse flexible pipe is sealedly connected with, for the pressure switch (1) to be connected at the draining valve of the water tank (5).
7. monitoring device according to claim 3, it is characterised in that first connecting wire (13) and the second connection are led
Line (14) is twisted-pair cable.
8. monitoring device according to claim 3, it is characterised in that the pressure gauge (12) is provided with a pressure definite value,
The pressure definite value is used to carry out verification checking to the pressure gauge (12) by Portable pressure calibrating instrument.
9. monitoring device according to claim 2, it is characterised in that the direct current power source voltage is 12V.
10. monitoring device according to claim 2, it is characterised in that the audible-visual annunciator is provided with manual alarm
Switch, for closing or disconnecting the audible-visual annunciator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800188.7U CN206864194U (en) | 2017-07-04 | 2017-07-04 | A kind of nuclear power station prevents the monitoring device of water tank negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720800188.7U CN206864194U (en) | 2017-07-04 | 2017-07-04 | A kind of nuclear power station prevents the monitoring device of water tank negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206864194U true CN206864194U (en) | 2018-01-09 |
Family
ID=60829777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720800188.7U Active CN206864194U (en) | 2017-07-04 | 2017-07-04 | A kind of nuclear power station prevents the monitoring device of water tank negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206864194U (en) |
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2017
- 2017-07-04 CN CN201720800188.7U patent/CN206864194U/en active Active
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