CN107179169B - A kind of nuclear power station check valve action test set and test method - Google Patents
A kind of nuclear power station check valve action test set and test method Download PDFInfo
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- CN107179169B CN107179169B CN201710448316.0A CN201710448316A CN107179169B CN 107179169 B CN107179169 B CN 107179169B CN 201710448316 A CN201710448316 A CN 201710448316A CN 107179169 B CN107179169 B CN 107179169B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
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Abstract
The present invention provides a kind of nuclear power station check valve action test set, is used for Safety Injection pipeline non-return valve seal tightness test, including upstream line, downstream line, and high pressure introduces component and pressure detecting part.On the other hand, the present invention also provides a kind of nuclear power station non-return valve test methods, component is introduced by high pressure, the pressure of primary Ioops residual heat removal system is introduced into non-return valve pipeline, to achieve the purpose that non-return valve pipeline impulse can be realized without starting low pressure safety injection pump, greatly reduce empirical risk；Conventional instrument is replaced using pressure detecting part simultaneously, and pressure gauge is connected using high tension instrument hose, pressure gauge installation site is more flexible, to improve instrument readability, reduces error in reading.
Description
Technical field
The present invention relates to pressurized-water reactor nuclear power plant Safety Injection pipeline non-return valve seal tightness test technical field more particularly to one
Kind is applied to the experimental rig and test method of pressurized-water reactor nuclear power plant Safety Injection pipeline non-return valve seal tightness test.
Background technique
Safety injection system (referred to as RIS) and reactor cooling system (also known as primary Ioops, referred to as RCP) are that nuclear island closes
Key system is easy to cause reactor cooling and out of hand when reactor cooling system breaks down in nuclear power station, this
When remedied by safety injection system, guarantee the safe operation of nuclear power plant reactor.
Nuclear plant safety injection pipeline is provided with a series of non-return valve in design to form the isolation boundary of primary Ioops,
And in order to achieve the purpose that redundancy, every peace note pipeline is all provided with one of check again in RIS system and RCP system respectively
Valve.The good sealing property of peace note pipeline non-return valve is to maintain the complete important leverage in primary Ioops pressure boundary, the check of peace note line
Valve sealing performance is just particularly important, it is therefore desirable to execute a series of experiments to verify its leakproofness.
Currently, being directed to non-return valve seal tightness test, need artificially to manufacture pressure and by pressure by starting low pressure safety injection pump
Non-return valve pipeline is introduced, situation is then risen by the upstream line pressure that quarantines after the pressure release of non-return valve upstream to judge non-return valve
Leakproofness.Wherein, it needs to weld interim pipeline on pressure monitoring pipeline in advance, then one piece of interim pressure is connected by interim pipeline
Power table is for detecting pressure change.
Since test process needs artificial starting low pressure safety injection pump, workload and the duration of staff are not only increased,
Metalling run out during also increasing test, equipment damage, the risks such as personal injury.Entire test process is also required to examine in pressure in advance
Location sets a large amount of high-precision meter of installation, and not only installation also increases instrument with heavy workload, long-time installation is removed on site
The probability of table damage, causes experimentation cost to rise.Along with the limitation for being limited by in-site installation condition, the installation site of instrument is simultaneously
Not quite convenient for reading, cause meter reading error larger.
Summary of the invention
The technical problems to be solved by the present invention are: non-return valve seal tightness test need to artificially start in the prior art
Low pressure safety injection pump, the risks such as equipment damage, personal injury during increasing test and scene need to install a large amount of high-precision
Instrument leads to problems such as experimentation cost rise, and provides a kind of without starting low pressure safety injection pump, test efficiency is higher, cost more
Cheap nuclear plant safety injection pipeline non-return valve experimental rig and test method.
The technical solution that the present invention is proposed with regard to above-mentioned technical problem is as follows: on the one hand, providing a kind of nuclear power station non-return valve
Experimental rig, comprising:
Upstream line, for connecting safety injection system；
Downstream line, for connecting reactor coolant loop；
First non-return valve, is connected between upstream line and downstream line, further includes:
High pressure introduce component, be connected to primary Ioops residual heat removal system and first non-return valve downstream line it
Between, for the pressure of the residual heat removal system of primary Ioops to be introduced from high pressure and by the high pressure drop down to first non-return valve
Test pressure and be delivered on the first non-return valve downstream line；
Pressure detecting part is connected on the downstream line or upstream line of first non-return valve, for detecting described
The test pressure of one non-return valve and first non-return valve downstream is detected during the first non-return valve seal tightness test
The pressure change of pipeline or upstream line.
Wherein, the condition of high pressure is introduced are as follows: before to the being sealed property of the first non-return valve test, cut off upstream respectively
The connection of pipeline and safety injection system and downstream line and reactor coolant loop.
Wherein, it includes high-pressure hose and the first valve that the high-pressure hose both ends are separately connected that the high pressure, which introduces component,
Component and the second valve member；
The high pressure introduces component one end and connects the primary Ioops residual heat removal system Trunk Line by the first valve member
On, the other end is connected on the downstream line of first non-return valve by the second valve member, and second valve member is used
In will let out to the test pressure of first non-return valve and be introduced to the downstream line of first non-return valve under the high pressure；
Wherein, the pressure detecting part includes:
Pressure detecting female component, on the upstream line for connecting first non-return valve；
Pressure detecting subheader component is connect with the female component plug type, for detecting first non-return valve
Test pressure and the pressure that the first non-return valve upstream line is detected during the first non-return valve seal tightness test
Situation of change, if the actual pressure of detection is greater than the test pressure and judges that non-return valve has leakage when upstream pressure increases.
Wherein, the pressure detecting part includes:
Pressure detecting female component, on the downstream line for connecting first non-return valve；
Pressure detecting subheader component is connect with the female component plug type, for detecting first non-return valve
Test pressure and the pressure that the first non-return valve downstream line is detected during the first non-return valve seal tightness test
Situation of change, if the actual pressure of detection is less than the test pressure and judges that non-return valve has leakage when downstream pressure reduces.
Wherein, the other end of the high-pressure hose is also connected with pressure detecting part, and the pressure detecting part passes through the second valve
Door component is connected on the downstream line of the first non-return valve and third non-return valve, and the pressure detecting part passes through third valve member
It is connected on the downstream line of the second non-return valve and the 4th non-return valve.
Wherein, the pressure detecting part female component includes:
Connect female, one end connecting flange of the connection female, the 5th valve of flanged joint, the 5th valve
Upstream line or downstream line are connected, line pressure is used to open or closes；
The pressure detecting subheader component includes:
Subheader is connected, the other end of the one end of the connection subheader movably with the connection female connects；
The other end of the connection subheader is connect by the first connector with pressure gauge, and the pressure gauge is for detecting the reality
Border pressure.
Wherein, the other end of the connection subheader is also connected with the second connector, and second connector is cut manually for connecting
Only valve, the hand stop valve are connect with hydrophobic exhaust pipe for controlling pipeline pressure release；
First connector includes the first female connector and can the first subheader for connecting of plug with the first female connector
Connector；
Second connector includes the second female connector and can the second subheader for connecting of plug with the second female connector
Connector；
The connection female is automatically closed under blank state；
The pressure gauge is attached with first connector by instrument high-pressure hose, for disposing the pressure gauge
In the position for being easy to read.
Wherein, the other end of the high-pressure hose is divided into the first branch and second branch, the other end of the first branch
The second valve member is connected, the other end of second valve member is connected on the downstream line of first non-return valve；Institute
State second branch the other end connection third valve member, the other end of the third valve member be connected to the second non-return valve and
On the downstream line of 4th non-return valve.
Wherein, the high-pressure hose uses high-pressure hose black glue pipe, is used for interim impulse；The high-pressure hose and the first valve
Door component is all made of mutually isostructural slip-knot nipple between the second valve member and third valve member and connect；Institute
It states and is equipped with high-pressure spacer inside slip-knot nipple, the high-pressure spacer for playing sealing function after compaction.
Wherein, first valve member includes flange and the first valve with flanged joint, and first valve is used as
Open or close pipeline；
Second valve member includes: flange, and the second valve with the flanged joint is connect with second valve
Third valve, and be connected to the 4th valve among second valve and third valve；
Second valve and third valve, which are both used as, opens or closes pipeline, and the 4th valve is let out for controlling pipeline
Pressure, test pressure needed for the introducing high pressure is down to first non-return valve.
On the other hand, a kind of nuclear power station non-return valve test method is provided, it is close for nuclear plant safety injection pipeline non-return valve
The test of envelope property, includes the following steps:
S1: under let out the high pressure of one loop of nuclear power station residual heat removal system to test pressure and be introduced to the downstream tube of non-return valve
On line；
S2: the downstream line or upstream line of first non-return valve are detected by the pressure detecting part of removable connection
Test pressure；
S3: the pressure change of first non-return valve upstream or downstream line during detection test, according to pressure change
State judges whether first non-return valve leaks, if the actual pressure of downstream line detection is less than the test pressure, downstream
The actual pressure of pressure reduction or upstream line detection is greater than the test pressure, and upstream pressure increases, and judges the first non-return valve
There is leakage.
Wherein, the pressure detecting part is for detecting first non-return valve, the second non-return valve, third non-return valve and the
The line pressure downstream of four non-return valves changes, if the actual pressure of detection is less than the test pressure, downstream pressure is reduced, judgement
One or more non-return valves have leakage in first non-return valve, the second non-return valve, third non-return valve and the 4th non-return valve.
A kind of nuclear power station check valve action test set provided by the invention and test method have the following technical effect that:
Component, which is introduced, by high pressure realizes that the impulse work of non-return valve pipeline is improved without starting low pressure safety injection pump
Test efficiency, while also reducing the multiple risks such as existing equipment damage and personal injury when the starting of low pressure safety injection pump；It is logical
Excess pressure detection piece detects line pressure, realizes that one is mostly used, greatly reduces experimentation cost investment；And pass through high-pressure hose
Pressure gauge is connected, pressure gauge is mountable and is more advantageous to the position of reading, to reduce error in reading, improves test mass.Together
When, non-return valve test method provided by the invention keeps experiment work simpler, improves test efficiency.
Detailed description of the invention
Fig. 1 is that check valve action test set provided by the invention connects schematic diagram；
Fig. 2 is nipple schematic diagram of internal structure living provided by the invention；
Fig. 3 is pressure detecting part structural schematic diagram provided by the invention；
Fig. 4 is high-pressure hose impulse schematic diagram provided by the invention.
Specific embodiment
Low pressure safety injection pump need to artificially be started in order to solve non-return valve seal tightness test in the prior art, during increasing test
The risks such as equipment damage, personal injury and scene a large amount of high-precision meter need to be installed experimentation cost is caused to rise etc. and asked
Topic provides a kind of nuclear plant safety injection pipeline non-return valve experimental rig and test method, core concept is: non-return valve examination
Experiment device introduces component impulse by high pressure, without starting low pressure safety injection pump, improves test efficiency, reduces empirical risk；
Traditional instrument installation method is replaced using pressure detecting part, realizes multi-purpose, a very big reduction experimentation cost investment, and pass through
High-pressure hose connects pressure gauge, and pressure gauge is mountable and is more advantageous to the position of reading, to reduce error in reading.Meanwhile this
The non-return valve test method that invention provides keeps experiment work simpler, improves test efficiency.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment one:
Fig. 1 is that check valve action test set connects schematic diagram, as shown in Figure 1, the check valve action test set includes:
Upstream line 101, for connecting safety injection system 100；
Downstream line 102, for connecting reactor coolant loop 500；
First non-return valve 10, is connected between upstream line 101 and downstream line 102, further includes:
High pressure introduces component, be connected to primary Ioops residual heat removal system 700 and the first non-return valve 10 downstream line 102 it
Between, for by the pressure of primary Ioops residual heat removal system from being introduced from high pressure and by the high pressure drop down to first non-return valve
10 test pressure is simultaneously delivered to first non-return valve 10；
Pressure detecting part 130 is connected on the upstream line 101 or downstream line 102 of first non-return valve 10, is used for
It detects the test pressure of first non-return valve 10 and detects upstream during 10 seal tightness test of the first non-return valve
The pressure change of pipeline 101 or downstream line 102.
Pressure detecting part 130 being mounted on downstream line 102 in the present embodiment one.
It includes high-pressure hose 600 and the first valve that 600 both ends of the high-pressure hose are separately connected that the high pressure, which introduces component,
Door component 610 and the second valve member 620；
The high pressure introduces the downstream line 102 that component one end connects the first non-return valve 10 by the second valve member 620,
On the Trunk Line 611 for the residual heat removal system 700 that the other end is connected to primary Ioops by the first valve member 610.
First valve member 610 includes the first valve 610a and flange 610b.Described one end first valve 610a connects
Meet Trunk Line 611, other end connecting flange 610b, by opening the first valve 610a for primary Ioops discharge system during test
700 high pressure introduces, and impulse operation can be realized.The other end of the flange 610b passes through nipple 800 living and connects high pressure
Hose 600.
Second valve member 620 includes: flange 620a, the second valve 620b connecting with the flange 620a, with
The third valve 620c of the second valve 620b connection, and be connected in the second valve 620b and third valve 620c
Between the 4th valve 620d；
The second valve 620b, third valve 620c are used to open or close pipeline, and the 4th valve 620d is used
In control pipeline pressure release, test pressure needed for the introducing high pressure is down to first non-return valve 10.
The high-pressure hose 600 uses high-pressure hose black glue pipe, plays the role of interim impulse pipeline, and highest bears pressure
Power is 250bar.It is all made of between the high-pressure hose 600 and the first valve member 610 and the second valve member 620 identical
The slip-knot nipple 800 of structure connects.
Further, as shown in Fig. 2, the high-pressure hose 600 and the second valve member 620 pass through slip-knot nipple
800 connect, and high-pressure spacer 801 are equipped with inside the slip-knot nipple 800, the high-pressure spacer 801 for rising after compaction
To sealing function.
Further, as shown in figure 3, the pressure detecting part 130 includes:
Pressure detecting female component 131, on the upstream line 101 or downstream line 102 for connecting first non-return valve 10；
Pressure detecting subheader component 132 is connect with 131 plug type of female component.
The pressure detecting female component 131 includes:
Female 135a, one end connecting flange 140 of the connection female 135a are connected, the flange 140 connects the 5th valve
Door 141, the 5th valve 141 connection upstream line 101 or downstream line 102, are used to open or close pipeline.
The pressure detecting female component 131 can pass through the threaded connection of first flange disk 140a and second flange disk 140b
It installs in advance on site.Under blank state, the connection female 135a is automatically closed, while the 5th valve 141 being closed, and is led to
It crosses twice isolating valve and reinforces the leakproofness of upstream line 101 or downstream line 102 under blank state.
The pressure detecting subheader component 132 includes:
Connect subheader 135b, it is described connection subheader 135b one end movably with it is described connection female 135a the other end
It is connected；The other end of the connection subheader 135b is used to connect by the first connector 137 with pressure gauge 138, the pressure gauge 138
For detecting the actual pressure.
The other end of the connection subheader 135b is also connected with the second connector 136, and second connector 136 is for connecting hand
Dynamic shut-off valve 139, the hand stop valve 139 are connect with hydrophobic exhaust pipe 133 for controlling pipeline pressure release；
First connector 137 include the first female connector 137a and with the first female connector 137a can plug connect
The first subheader connector 137a；Second connector 136 include the second female connector 137a and with the second female connector
137a can plug connection the second subheader connector 137b.
The pressure gauge 138 is attached with first connector 137 by instrument high-pressure hose 134, and being used for will be described
Pressure gauge 138 is placed in the position for being easy to read, and flexibility is high, to reduce error in reading, improves test mass.
It should be noted that when the pressure detecting part 130 is connected to the upstream line 101 of first non-return valve 10
When, the pressure detecting part 130 is for detecting the test pressure of first non-return valve 10 and in first non-return valve 10
The pressure changing of the first non-return valve upstream line 101 is detected during seal tightness test, if the actual pressure of detection
Judge that first non-return valve 10 has leakage when upstream pressure increases greater than the test pressure；
When the pressure detecting part 130 is connected to the downstream line 102 of first non-return valve 10, the pressure detecting
Part 130 is for detecting the test pressure of first non-return valve 10 and during 10 seal tightness test of the first non-return valve
The pressure changing of the first non-return valve downstream line 102 is detected, if the actual pressure of detection is less than the test pressure,
When downstream pressure reduces, judge that the first non-return valve non-return valve has leakage.
In non-return valve test implementation procedure, testing crew can be carried around the pressure detecting subheader component 132, according to
Pressure detecting subheader component 132 is connected by test arrangement with the pressure detecting female component 131 for installing in advance at the scene, is combined into
Non-return valve seal tightness test temporary pressure meter apparatus, i.e., executable non-return valve test operation, test examine pressure after the completion of executing
Surveying subheader component 132 and removing can be used for next test, realize that one is mostly used.
Further, as shown in figure 4, introducing component by high pressure can be achieved at the same time drawing for multiple non-return valve seal tightness tests
Press operation, comprising:
The first non-return valve 10 being connected on first low-voltage safety injected system, 100 pipeline；
The second non-return valve 20 being connected on second low-voltage safety injected system, 200 pipeline；
The third check being connected between first high pressure safety injection system 300 and the first low-voltage safety injected system 100
Valve 30；
The 4th check being connected between second high pressure safety injection system 400 and the second low-voltage safety injected system 200
Valve 40.
One end of the high potential assembly is connected to the residual heat removal system 700 of primary Ioops by first valve member 610
On Trunk Line 611, the other end is divided into the first branch 621 and second branch 631.
The first branch 621 is connected to first non-return valve 10 and third non-return valve by the second valve member 620
On 30 downstream line, second valve member 620 under the high pressure for will let out to first non-return valve 10 and third
The test pressure of non-return valve 30 is simultaneously introduced on the downstream line of first non-return valve 10 and third non-return valve 30.
The second branch 631 is connected to second non-return valve 20 and the 4th non-return valve by third valve member 630
40 downstream line, the third valve member 630 are inverse to second non-return valve 20 and the 4th for will let out under the high pressure
Only the test pressure of valve 40 and it is introduced on the downstream line of second non-return valve 20 and the 4th non-return valve 40.
The other end of the high-pressure hose 600 is also connected with pressure detecting part 144, and the pressure detecting part 144 passes through the
Two valve members 620 are connected on the downstream line of the first non-return valve 10 and third non-return valve 30, and the pressure detecting part 144 is logical
Third valve member 630 is crossed to be connected on the downstream line of the second non-return valve 20 and the 4th non-return valve 40.
The pressure detecting part 144 for detect first non-return valve 10, the second non-return valve 20, third non-return valve 30 with
And the 4th non-return valve 40 line pressure downstream variation, if detection actual pressure be less than the test pressure, downstream pressure drop
It is low, judge one or more in first non-return valve 10, the second non-return valve 20, third non-return valve 30 and the 4th non-return valve 40
Non-return valve has leakage.
Embodiment two:
The present invention also provides a kind of nuclear power station non-return valve test methods, for nuclear plant safety injection pipeline non-return valve sealing
Property test.
It should be noted that non-return valve test can be divided into two kinds of basic skills, one is in non-return valve pressurized downstream, upstream
It is isolated after pressure release, monitors upstream pressure climbing speed with pressure gauge；Another kind is isolated after non-return valve pressurized downstream, and upstream is let out
Pressure monitors downstream pressure fall off rate with pressure gauge.
As shown in connection with fig. 1, below in 10 pressurized downstream of the first non-return valve, it is isolated after the pressure release of upstream, with the pressure
Detection components 130 detect the whether increased sealing test method of upstream pressure and elaborate, and include the following steps:
S1: the upstream line 101 and the first low-voltage safety injected system 100 of cutting first non-return valve 10, downstream tube
Upstream line 101 and downstream line 102 is isolated in the connection of line 102 and the first reactor cooling system 500.
S2: opening the first valve 610a, under let out the high pressure of one loop of nuclear power station residual heat removal system 700, pass through height
Pressure hose 600 leads to the second valve member 620.The introducing high pressure is adjusted by the 4th valve 620d to the first non-return valve
10 test pressure is re-introduced into the downstream line 102 of first non-return valve 10, and the second valve is closed after the completion of impulse
620b and third valve 620c.
S3: 101 pressure of upstream line of first non-return valve 10 is down to by 17Bar.g (this by hand stop valve 139
Pressure criterion is that starting low pressure safety injection pump carries out setting when impulse, and low pressure safety injection pump outlet pressure is slightly larger than 17bar.g), lead to
Cross the pressure change being arranged on the detection upstream line 101 of pressure detecting part 130 of upstream line 101.
S4: judge whether that first non-return valve 10 leaks according to pressure change state, if the actual pressure of detection is greater than
The test pressure, 101 pressure increase of upstream line judge that first non-return valve 10 has leakage.
Further, as shown in connection with fig. 4, multiple non-return valve leakproofness are realized simultaneously below for by high pressure introducing component
The impulse of test operates, and makes in detail of the sealing test method whether pressure detecting assembly 144 detection downstream pressure declines
It describes in detail bright, includes the following steps:
S1: isolation first non-return valve 10, the second non-return valve 20, third non-return valve 30 and the 4th non-return valve 40 are respectively
Upstream line and downstream line；
S2: opening the first valve 610a, under let out the high pressure of one loop of nuclear power station residual heat removal system 700, pass through height
The pressure hose first branch 621 leads to the second valve member 620, the high pressure by the 4th valve 620d will introducing high pressure adjust to
The test pressure of first non-return valve 10 and third non-return valve 30 is re-introduced into first non-return valve 10 and third non-return valve
On 30 downstream line；
Third valve member 630 is led to by high-pressure hose second branch 631, the high pressure will by the 6th valve 630d
It introduces high pressure to adjust to the test pressure of second non-return valve 20 and the 4th non-return valve 40, be re-introduced into second non-return valve
10 and the 4th non-return valve 40 downstream line on；
It closes the first valve 610a after the completion of impulse the first to fourth non-return valve downstream line is isolated.
S3: the upstream line pressure of first to fourth non-return valve is released, and detects institute by pressure detecting assembly 140
State the pressure change on first to fourth non-return valve downstream line.
S4: judging whether to leak according to pressure change state, if the actual pressure of detection is less than the test pressure, downstream
Line pressure reduces, and judges that one or more non-return valves have leakage in first to fourth non-return valve.
It is understood that if the pressure detecting part 144 on the downstream line of first to fourth non-return valve not
Detect pressure change, line pressure downstream keeps stablizing, and judges that the first to fourth non-return valve seal tightness test is all closed
Lattice can save a large amount of test period；If the pressure detecting part 144 is in the downstream line of first to fourth non-return valve
On detect pressure change, line pressure downstream reduces, and can only judge one or more inverse in first to fourth non-return valve
Only valve has leakage, and specifically which non-return valve has leakage, needs to arrange further seal tightness test and is confirmed.
In conclusion the present invention provides a kind of nuclear power station check valve action test set and test method, it is soft by high pressure
Pipe realizes that impulse operation improves test efficiency, also greatly reduce low pressure safety injection pump and open without starting low pressure safety injection pump
The multiple risks such as existing equipment damage and personal injury when dynamic；Using the pipe of pressure detecting part detection non-return valve test process
Line pressure realizes that one is mostly used, and greatly reduces experimentation cost investment, and connect pressure gauge by high-pressure hose, pressure gauge can
The position of reading is installed and is more advantageous to, flexibility is high, to reduce error in reading；Meanwhile non-return valve provided by the invention
Test method keeps experiment work simpler, greatly improves test efficiency.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (12)
1. a kind of nuclear power station check valve action test set is used for Safety Injection pipeline non-return valve seal tightness test, includes:
Upstream line (101), for connecting safety injection system (100)；
Downstream line (102), for connecting reactor coolant loop (500)；
First non-return valve (10) is connected between upstream line (101) and downstream line (102), which is characterized in that further include:
High pressure introduces component, is connected to the residual heat removal system (700) of primary Ioops and the downstream tube of first non-return valve (10)
Between line (102), for the pressure of the residual heat removal system of primary Ioops to be introduced from high pressure and by the high pressure drop down to described
The test pressure of first non-return valve (10) is simultaneously delivered on the first non-return valve (10) downstream line (120)；
Pressure detecting part (130) is connected on the downstream line (102) or upstream line (101) of first non-return valve (10),
For detecting the test pressure of first non-return valve (10) and during the first non-return valve (10) seal tightness test
Detect the pressure change of the first non-return valve (10) downstream line (102) or upstream line (101).
2. check valve action test set according to claim 1, which is characterized in that introduce the condition of high pressure are as follows: to described
Before the test of first non-return valve (10) being sealed property, upstream line (101) and safety injection system (100) and downstream are cut off respectively
The connection of pipeline (102) and reactor coolant loop (500).
3. check valve action test set according to claim 1, which is characterized in that it includes that high pressure is soft that the high pressure, which introduces component,
The first valve member (610) and the second valve member (620) that pipe (600) and the high-pressure hose (600) both ends are separately connected；
The high pressure introduces component one end and connects the primary Ioops residual heat removal system Trunk Line by the first valve member (610)
(611) on, the other end is connected on the downstream line (102) of first non-return valve (10) by the second valve member (620),
Second valve member (620) under the high pressure for will let out to the test pressure of first non-return valve (10) and be introduced to
The downstream line (102) of first non-return valve (10).
4. check valve action test set according to claim 3, which is characterized in that the pressure detecting part (130) includes:
Pressure detecting female component (131), on the upstream line (101) for connecting first non-return valve (10)；
Pressure detecting subheader component (132) is connect with female component (131) plug type, inverse for detecting described first
Only the test pressure of valve (10) and first non-return valve is detected during the first non-return valve (10) seal tightness test
The pressure changing of upstream line (101), if the actual pressure of detection is greater than the test pressure, when upstream pressure increases,
Judge that non-return valve has leakage.
5. check valve action test set according to claim 3, which is characterized in that the pressure detecting part (130) includes:
Pressure detecting female component (131), on the downstream line (102) for connecting first non-return valve (10)；
Pressure detecting subheader component (132) is connect with female component (131) plug type, inverse for detecting described first
Only the test pressure of valve (10) and first non-return valve is detected during the first non-return valve (10) seal tightness test
(10) pressure changing of downstream line (102), if the actual pressure of detection is less than the test pressure, downstream pressure is reduced
When, judge that non-return valve has leakage.
6. check valve action test set according to claim 3, which is characterized in that the other end of the high-pressure hose (600)
It is also connected with pressure detecting part (144), to be connected to first inverse by the second valve member (620) for the pressure detecting part (144)
Only on the downstream line of valve (10) and third non-return valve (30), the pressure detecting part (144) passes through third valve member (630)
It is connected on the downstream line of the second non-return valve (20) and the 4th non-return valve (40).
7. check valve action test set according to claim 4 or 5, which is characterized in that the pressure detecting part female component
(131) include:
It connects female (135a), one end connecting flange (140) of connection female (135a), the flange (140) connection the
Five valves (141), the 5th valve (141) connection upstream line (101) or downstream line (102), are used to open or close
Line pressure；
The pressure detecting subheader component (132) includes:
It connects subheader (135b), one end of connection subheader (135b) is movably another with connection female (135a)
End connection；
The other end of connection subheader (135b) is connect by the first connector (137) with pressure gauge (138), the pressure gauge
(138) for detecting the actual pressure.
8. check valve action test set according to claim 7, which is characterized in that the other end of connection subheader (135b)
It is also connected with the second connector (136), second connector (136) is for connecting hand stop valve (139), the hand stop valve
(139) it connect with hydrophobic exhaust pipe (133) for controlling pipeline pressure release；
First connector (137) includes the first female connector (137a) and can plug company with the first female connector (137a)
The the first subheader connector (137b) connect；
Second connector (136) includes the second female connector (136a) and can plug company with the second female connector (136a)
The the second subheader connector (136b) connect；
The connection female (135a) is automatically closed under blank state；
The pressure gauge (138) is attached with first connector (137) by instrument high-pressure hose (134), is used for institute
It states pressure gauge (138) and is placed in the position for being easy to read.
9. check valve action test set according to claim 6, which is characterized in that the other end of the high-pressure hose (600)
It is divided into the first branch (621) and second branch (631), the other end of the first branch (621) connects the second valve member
(620), the other end of second valve member (620) is connected on the downstream line (102) of first non-return valve (10)；
The other end of the second branch (631) connects third valve member (630), the other end of the third valve member (630)
It is connected on the downstream line of the second non-return valve (20) and the 4th non-return valve (40).
10. check valve action test set according to claim 3, which is characterized in that the high-pressure hose (600) uses high pressure
Hose black glue pipe is used for interim impulse；The high-pressure hose (600) and the first valve member (610) and the second valve member
(620) and between third valve member (630) it is all made of mutually isostructural slip-knot nipple (800) connection；The slip-knot
High-pressure spacer (801) are equipped with inside nipple (800), the high-pressure spacer (801) for playing sealing function after compaction.
11. check valve action test set according to claim 6, which is characterized in that first valve member (610) includes
Flange (610b) and the first valve (610a) connecting with flange (610b), first valve (610a), which is used as, to be opened or closed
Pipeline；
Second valve member (620) includes: flange (620a), the second valve connecting with the flange (620a)
(620b), the third valve (620c) being connect with second valve (620b), and it is connected to second valve (620b)
The 4th intermediate valve (620d) with third valve (620c)；
Second valve (620b) and third valve (620c) are both used as and open or close pipeline, the 4th valve (620d)
For controlling pipeline pressure release, test pressure needed for the introducing high pressure is down to first non-return valve (10).
12. a kind of nuclear power station non-return valve test method is used for such as described in any item check valve action test sets of claim 1-11,
It is characterized by comprising the following steps:
S1: under let out the high pressure of one loop of nuclear power station residual heat removal system (700) to test pressure and be introduced to the first non-return valve
On downstream line (102)；
S2: downstream line (102) or upstream by pressure detecting part (130) detection the first non-return valve (10) of removable connection
The test pressure of pipeline (101)；
S3: the pressure change of the first non-return valve (10) upstream or downstream line during detection test, according to pressure change
State judges whether first non-return valve (10) leaks, if the actual pressure of downstream line (102) detection is less than the test
Pressure, downstream pressure reduces or the actual pressure of upstream line (101) detection is greater than the test pressure, and upstream pressure increases,
Judge that the first non-return valve (10) has leakage.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109029872B (en) * | 2018-09-29 | 2020-08-11 | 中广核工程有限公司 | Nuclear power station containment vessel mechanical penetration piece isolation valve sealing test device and test method |
| CN109855814B (en) * | 2019-01-22 | 2020-11-06 | 中广核工程有限公司 | Method and system for detecting tightness of RCPB isolation valve of nuclear power plant |
| CN110196216B (en) * | 2019-04-30 | 2022-05-10 | 中广核核电运营有限公司 | Method, system and device for testing third-number seal filter of main pump |
| CN111521352A (en) * | 2020-05-19 | 2020-08-11 | 岭东核电有限公司 | Nuclear power station unit check valve sealing performance detection and exception handling method |
| CN111627577B (en) * | 2020-06-05 | 2022-02-22 | 中国核动力研究设计院 | Test system and test method for performance evaluation of active equipment in accident environment |
| CN112098073B (en) * | 2020-08-28 | 2021-11-09 | 清华大学 | Method and device for detecting cold-state check performance of check combined valve |
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| US4573344A (en) * | 1984-06-19 | 1986-03-04 | Westinghouse Electric Corp. | Valve packing leakage monitoring device |
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| JP2000146744A (en) * | 1998-11-17 | 2000-05-26 | Babcock Hitachi Kk | Leakage detector for pressure vessel |
| JP4284702B2 (en) * | 2004-07-05 | 2009-06-24 | 三浦工業株式会社 | Gas leak detection device |
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| CN101858817B (en) * | 2010-06-10 | 2012-06-27 | 北京冶核技术发展有限责任公司 | Equal-pressure virtual isolation check valve sealing test method and equipment |
| CN202433164U (en) * | 2011-12-15 | 2012-09-12 | 中国核动力研究设计院 | Integrated seal test device for process penetration piece of nuclear power station |
| CN202549318U (en) * | 2012-02-29 | 2012-11-21 | 上海核工程研究设计院 | Residual heat removable system of nuclear reactor |
| CN203116927U (en) * | 2013-04-08 | 2013-08-07 | 天津虹炎科技有限公司 | Check valve detector |
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| CN206019960U (en) * | 2016-08-18 | 2017-03-15 | 阳江核电有限公司 | Lift non-return valve work seal detection means |
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