CN106908219B - A kind of the critical flow Experimental Control System and method of more valve group linkages - Google Patents
A kind of the critical flow Experimental Control System and method of more valve group linkages Download PDFInfo
- Publication number
- CN106908219B CN106908219B CN201710301721.XA CN201710301721A CN106908219B CN 106908219 B CN106908219 B CN 106908219B CN 201710301721 A CN201710301721 A CN 201710301721A CN 106908219 B CN106908219 B CN 106908219B
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- Prior art keywords
- valve
- acceleration switching
- pressure
- switching valve
- shut
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Classifications
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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
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/02—Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or unbalance
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/08—Control of liquid pressure
Abstract
It include spurting supervisor the invention discloses a kind of critical flow Experimental Control System of more valve group linkages and method, one, which is equipped with, in the upstream for spurting supervisor spurts orifice plate, it further include a pressure regulation branch pipe, pressure regulation branch pipe includes one and is connected to the first pressure reducing valve spurted between orifice plate and the first acceleration switching valve, is connected to spurting on supervisor between the first acceleration switching valve and the second acceleration switching valve after the first pressure reducing valve the first shut-off valve of series connection.The present invention is first subject to the impact forces of a part of fluid, and then valve can be made effectively to share the impact force of fluid in the experimentation of critical flow, extend the service life of valve with the impact force of another part fluid after the first high-speed switch valve events.The present invention is shared the pressure of first switch valve on two valves of first switch valve and second switch valve using pressure regulation branch pipe and pressure release branch pipe; reduce the starting differential pressure of single valve; the more conducively smooth unlatching of first switch valve can not be destroyed with the sealing surface of effective protection valve.
Description
Technical field
The present invention relates to the experimental arrangement control fields in derived energy chemical field, and in particular to a kind of more valve group linkages are faced
Flow Experimental Control System and method in boundary.
Background technique
Loss of-coolant accident (LOCA) is the design basis accident in PWR Safe Analysis, is in design process and licensing requisition procedure
Focal point.Loss of-coolant accident (LOCA) means that high-temperature, high pressure fluid forms quick high energy release in the form of critical flow at cut,
Rate of release determines loss of-coolant accident (LOCA) sequence and safe counter-measure.For it is correctly predicted and calculate cut at critical flow size,
It needs to carry out critical flow experiment in out-pile Experiment of Thermophysics.Carry out critical flow experiment when, for finely control cut blowdown time, one
As rapid switching valve is installed on main blow line, can realize in a short time valve entirely open with fully closed movement, i.e., in valve
The smooth unlatching of valve is realized after in front of the door under the conditions of High Pressure Difference, and high-velocity fluid is quickly truncated after reaching blowdown time.
Summary of the invention
The purpose of the present invention is to provide the critical flow Experimental Control Systems and method of a kind of more valve group linkages, solve existing
In technology critical flow test when the short problem of acceleration switching valve service life.
The present invention is achieved through the following technical solutions:
A kind of critical flow Experimental Control System of more valve group linkages, including supervisor is spurted, it is installed in the upstream for spurting supervisor
There is one to spurt orifice plate, be arranged in the downstream for spurting supervisor there are two concatenated first acceleration switching valve, the second acceleration switching valve,
It further include a pressure regulation branch pipe, pressure regulation branch pipe includes one and is connected to first spurted between orifice plate and the first acceleration switching valve and subtracts
Pressure valve, the first pressure reducing valve connect the first shut-off valve after be connected to spurting between the first acceleration switching valve and the second acceleration switching valve
On supervisor.Technical solution of the present invention on spurting supervisor by giving the first acceleration switching valve a pressure regulation branch pipe in parallel, directly
To spurt main pipe pressure excessive when solving the problems, such as experiment in the prior art；When the pressure for spurting supervisor increases, pass through pressure regulation
Branch pipe can directly reduce the impact that the first acceleration switching valve is subject to, and partial pressure is branched to second fastly by pressure regulation branch pipe
Fast switch valve substantially increases so that the first acceleration switching valve and the second acceleration switching valve share the positive pressure for spurting supervisor
The service life of first acceleration switching valve.
Spurting between first acceleration switching valve and the second acceleration switching valve is also connected with concatenated the on supervisor
Two pressure reducing valves, the second shut-off valve.Further, by spurting master between the first acceleration switching valve and the second acceleration switching valve
The mode that pressure release branch is installed on pipe, can effectively reduce the pressure spurted on supervisor, guarantee the safety of experiment.
A kind of critical flow experiment control method of more valve group linkages, it is characterised in that the following steps are included:
Before experiment: the first acceleration switching valve, the second acceleration switching valve are in close state；First pressure reducing valve is connected first section
Only valve is in close state.The first shut-off valve is opened, the b between the first acceleration switching valve and the second acceleration switching valve is pressed
Power starts to gradually rise, until closing when b point pressure rises to the first acceleration switching valve and spurts the half of point a pressure between orifice plate
First shut-off valve；If b point pressure is more than a point pressure 2/3, the second shut-off valve is opened, b point pressure is made to be lower than a point pressure again
2/3.When b point pressure is between the 1/2 of a point pressure and 2/3, the first shut-off valve and the second shut-off valve are all closed.
When experiment: channel TT&C system provides standard-sized sheet instruction to the first acceleration switching valve, the second acceleration switching valve simultaneously, the
One acceleration switching valve and the second acceleration switching valve simultaneously operation, and blowdown time timing is triggered simultaneously；When the time reach user to
After fixed blowdown time, timer expiration；
Experiment terminates: sending shutdown signal to the second acceleration switching valve, after postponing a period of time, then gives the first high-speed switch
Valve shutdown signal completes experiment.
It is a further object to provide a kind of control methods to be easy to solve acceleration switching valve in the prior art
The problem of being impacted and being damaged is adjusted by spurting Trunk Line using more acceleration switching valve series connection, then two-way pressure in parallel
Branch can effectively adjust the front and back pressure difference of every switch valve, share the static service load of every deck valve door；It is linked and is controlled using valve
Technology processed is opened simultaneously with valve and opens critical flow experiment, and valve closes and is based on delay policy, thus by suffered by separate unit valve
Power be effectively disperseed, to reduce high-velocity fluid to the percussion of separate unit valve.
At the end of the step experiment, time=first acceleration switching valve of delay is from standard-sized sheet to the time for closing half.
Further, delay time setting in this way guarantees that the second acceleration switching valve first starts pass movement, in the second high-speed switch
When stroke of valve proceeds to half, the first acceleration switching valve starts pass movement again, makes to circulate since the second acceleration switching valve first acts
Area becomes smaller, and is first subject to the impact forces of a part of fluid, then bears another part after the first high-speed switch valve events
The impact force of fluid, therefore by using more valve group critical flow experiment control sequences, valve can be made in the experiment of critical flow
The impact force that fluid is effectively shared in journey, extends the service life of valve.
Third object of the present invention is to provide a kind of methods to solve under acceleration switching valve starting differential pressure in the prior art
The problem of drop.By utilizing the second pressure reducing valve on the first pressure reducing valve and the first shut-off valve and pressure release branch pipe on pressure regulation branch pipe
With the second shut-off valve, the half that the pressure between first switch valve and second switch valve is located at first switch valve upstream pressure is adjusted
To 2/3rds, to make the one third of the front and back pressure difference rated differential head of first switch valve to half, second is set to open
Closing the front and back pressure difference of valve is the half of rated differential head to 2/3rds, to sharing the pressure of first switch valve to first
On two valves of switch valve and second switch valve, the starting differential pressure of single valve is reduced, more conducively first switch valve is smooth
It opens.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention a kind of the critical flow Experimental Control System and method of more valve group linkages, when the pressure for spurting supervisor increases
When, the impact that the first acceleration switching valve is subject to can directly be reduced by pressure regulation branch pipe, partial pressure is passed through into pressure regulation branch pipe
The second acceleration switching valve is branched to, so that the first acceleration switching valve and the second acceleration switching valve share the positive pressure for spurting supervisor
Power substantially increases the service life of the first acceleration switching valve, by the first acceleration switching valve and the second acceleration switching valve it
Between spurt supervisor on install pressure release branch mode, can effectively reduce spurt supervisor on pressure, guarantee experiment safety
Property；
2, the present invention a kind of the critical flow Experimental Control System and method of more valve group linkages, by spurting Trunk Line using more
The series connection of platform acceleration switching valve, then two-way pressure in parallel adjust branch, can effectively adjust the front and back pressure difference of every switch valve, share every
The static service load of deck valve door；Using valve linkage control technology, is opened simultaneously with valve and open critical flow experiment, and valve
It closes and is based on delay policy, to power suffered by separate unit valve is effectively disperseed, to reduce high-velocity fluid to separate unit valve
Percussion；
3, the present invention a kind of the critical flow Experimental Control System and method of the linkage of more valve groups, by the setting of delay time,
Guarantee that the second acceleration switching valve first starts pass movement, when the second high-speed switch stroke of valve proceeds to half, the first high-speed switch
Valve starts pass movement again, so that circulation area is become smaller since the second acceleration switching valve first acts, is first subject to rushing for a part of fluid
Active force is hit, the impact force of another part fluid is then born after the first high-speed switch valve events, therefore by using more valve groups
Critical flow experiment control sequence can make valve effectively share the impact force of fluid in the experimentation of critical flow, extend valve
The service life of door.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is principle schematic diagram of the present invention；
Fig. 2 is control method flow chart of the invention.
Label and corresponding parts title in attached drawing:
1- spurts orifice plate, the first acceleration switching valve of 2-, the second acceleration switching valve of 3-, the first pressure reducing valve of 4-, the cut-off of 5- first
Valve, the second pressure reducing valve of 6-, the second shut-off valve of 7-.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, a kind of critical flow Experimental Control System of more valve group linkages of the present invention, including supervisor is spurted, it is spraying
The upstream for putting supervisor is equipped with one and spurts orifice plate 1, and in the downstream setting for spurting supervisor, there are two concatenated first high-speed switches
Valve 2, the second acceleration switching valve 3 further include a pressure regulation branch pipe, and pressure regulation branch pipe is connected to including one spurts orifice plate 1 and first
The first pressure reducing valve 4 between acceleration switching valve 2, the first pressure reducing valve 4 connect the first shut-off valve 5 after be connected to the first acceleration switching valve
2 and second the spurting on supervisor between acceleration switching valve 3；Spray between the first acceleration switching valve 2 and the second acceleration switching valve 3
It puts and is also connected with concatenated second pressure reducing valve 6, the second shut-off valve 7 on supervisor, the second pressure reducing valve 6 is let out with the second shut-off valve 7 composition
Press branch pipe.
A kind of critical flow experiment control method of more valve group linkages of the invention as shown in Figure 2, comprising the following steps: experiment
Before: the first acceleration switching valve 2, the second acceleration switching valve 3 are in close state, and the first pressure reducing valve (4) connects the first shut-off valve (5)
It is in close state；The first shut-off valve (5) are opened, between the first acceleration switching valve (2) and the second acceleration switching valve (3)
B point pressure starts to gradually rise, until b point pressure rises to the first acceleration switching valve (2) and spurts point a pressure between orifice plate (1)
When half, close the first shut-off valve (5)；If b point pressure is more than a point pressure 2/3, the second shut-off valve (7) are opened, b is pressed
Power is lower than the 2/3 of a point pressure again.When b point pressure is between the 1/2 of a point pressure and 2/3, the first cut-off is all closed
Valve (5) and the second shut-off valve (7).When experiment: channel TT&C system to the first acceleration switching valve 2, the second acceleration switching valve 3 simultaneously
Standard-sized sheet instruction, the first acceleration switching valve 2 and the second acceleration switching valve 3 simultaneously operation are provided, and triggers blowdown time timing simultaneously；
After the time reaching the blowdown time that user gives, timer expiration；Experiment terminates: sending to the second acceleration switching valve 3 and closes letter
Number, delay a period of time, time=first acceleration switching valve 2 of delay is given first quickly again from standard-sized sheet to the time for closing half
2 shutdown signal of switch valve completes experiment, and it is dynamic to guarantee that the second acceleration switching valve 3 first starts to close for delay time setting in this way
Make, when 3 stroke of the second acceleration switching valve proceeds to half, the first acceleration switching valve 2 starts pass movement again；Quickly due to second
Switch valve 3, which is first opened, makes circulation area become smaller, and is first subject to the impact forces of a part of fluid, then the first acceleration switching valve 2
With the impact force of another part fluid after movement, therefore by using more valve group critical flow experiment control sequences, valve can be made
The impact force that fluid is effectively shared in the experimentation of critical flow, extends the service life of valve.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (2)
1. a kind of critical flow experiment control method of more valve group linkages, it is characterised in that: using a kind of the critical of more valve group linkages
Stream Experimental Control System is tested,
The Experimental Control System includes spurting supervisor, is equipped with one in the upstream for spurting supervisor and spurts orifice plate (1), is spurting
There are two concatenated first acceleration switching valves (2), the second acceleration switching valve (3) for the downstream setting of supervisor, it is characterised in that: also wraps
A pressure regulation branch pipe is included, pressure regulation branch pipe includes one and is connected to first spurted between orifice plate (1) and the first acceleration switching valve (2)
Pressure reducing valve (4) is connected to the first acceleration switching valve (2) after the first pressure reducing valve (4) series connection the first shut-off valve (5) and quickly opens with second
Close spurting on supervisor between valve (3)；Spurting between first acceleration switching valve (2) and the second acceleration switching valve (3)
It is also connected with pressure release branch pipe on supervisor, concatenated second pressure reducing valve (6), the second shut-off valve (7) are provided on pressure release branch pipe；
It the described method comprises the following steps:
Before experiment:
Step 1: the first acceleration switching valve (2), the second acceleration switching valve (3) are in close state；Second pressure reducing valve (6), second
Shut-off valve (7) is in close state；First pressure reducing valve (4) series connection the first shut-off valve (5) is in close state；
Step 2: opening the first shut-off valve (5), the b point between the first acceleration switching valve (2) and the second acceleration switching valve (3)
Pressure starts to gradually rise, until b point pressure rises to the first acceleration switching valve (2) and spurts the half of point a pressure between orifice plate (1)
When, it closes the first shut-off valve (5)；If b point pressure is more than a point pressure 2/3, the second shut-off valve (7) are opened, make b point pressure weight
New low point in a point pressure 2/3；When b point pressure is between the 1/2 of a point pressure and 2/3, all the first shut-off valve (5) are closed
With the second shut-off valve (7)；
When experiment:
Step 3: channel TT&C system provides standard-sized sheet instruction to the first acceleration switching valve (2), the second acceleration switching valve (3) simultaneously,
First acceleration switching valve (2) and the second acceleration switching valve (3) simultaneously operation, and blowdown time timing is triggered simultaneously；It is reached when the time
After the blowdown time given to user, timer expiration；
Experiment terminates:
Step 4: sending shutdown signal to the second acceleration switching valve (3), after postponing a period of time, then give the first acceleration switching valve
(2) shutdown signal completes experiment.
2. a kind of critical flow experiment control method of more valve group linkages according to claim 1, which is characterized in that the step
At the end of rapid experiment, time=the first acceleration switching valve (2) of delay is from standard-sized sheet to the time for closing half.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301721.XA CN106908219B (en) | 2017-05-02 | 2017-05-02 | A kind of the critical flow Experimental Control System and method of more valve group linkages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301721.XA CN106908219B (en) | 2017-05-02 | 2017-05-02 | A kind of the critical flow Experimental Control System and method of more valve group linkages |
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| CN106908219A CN106908219A (en) | 2017-06-30 |
| CN106908219B true CN106908219B (en) | 2019-01-29 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6066192A (en) * | 1983-09-21 | 1985-04-16 | 株式会社日立製作所 | Method of reducing pressure of reactor pressure vessel |
| JP2515797B2 (en) * | 1987-05-15 | 1996-07-10 | 株式会社日立製作所 | Turbin controller |
| CN2397354Y (en) * | 1999-11-22 | 2000-09-20 | 启东市海鹰冶金机械厂 | Oxygen pressure automatic regulating valve group |
| JP2001349975A (en) * | 2000-06-09 | 2001-12-21 | Hitachi Ltd | Nuclear reactor water injection facility using steam turbine drive pump |
| CN201109786Y (en) * | 2007-11-02 | 2008-09-03 | 营口恒星阀业制造有限公司 | Self force type pressure regulating valve set |
| CN102635723A (en) * | 2012-03-31 | 2012-08-15 | 马钢(集团)控股有限公司 | Device for solving valve faults in space division system and operation method |
| CN202948735U (en) * | 2012-12-03 | 2013-05-22 | 中核核电运行管理有限公司 | Structure for increasing inner pressure of blocked pipe section |
| CN103712060A (en) * | 2014-01-15 | 2014-04-09 | 青岛恒邦机电科技有限公司 | Oxygen regulating valve group |
-
2017
- 2017-05-02 CN CN201710301721.XA patent/CN106908219B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6066192A (en) * | 1983-09-21 | 1985-04-16 | 株式会社日立製作所 | Method of reducing pressure of reactor pressure vessel |
| JP2515797B2 (en) * | 1987-05-15 | 1996-07-10 | 株式会社日立製作所 | Turbin controller |
| CN2397354Y (en) * | 1999-11-22 | 2000-09-20 | 启东市海鹰冶金机械厂 | Oxygen pressure automatic regulating valve group |
| JP2001349975A (en) * | 2000-06-09 | 2001-12-21 | Hitachi Ltd | Nuclear reactor water injection facility using steam turbine drive pump |
| CN201109786Y (en) * | 2007-11-02 | 2008-09-03 | 营口恒星阀业制造有限公司 | Self force type pressure regulating valve set |
| CN102635723A (en) * | 2012-03-31 | 2012-08-15 | 马钢(集团)控股有限公司 | Device for solving valve faults in space division system and operation method |
| CN102635723B (en) * | 2012-03-31 | 2013-09-18 | 马钢(集团)控股有限公司 | Device for solving valve faults in space division system and operation method |
| CN202948735U (en) * | 2012-12-03 | 2013-05-22 | 中核核电运行管理有限公司 | Structure for increasing inner pressure of blocked pipe section |
| CN103712060A (en) * | 2014-01-15 | 2014-04-09 | 青岛恒邦机电科技有限公司 | Oxygen regulating valve group |
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| Publication number | Publication date |
|---|---|
| CN106908219A (en) | 2017-06-30 |
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