CN107420552A - A kind of passive valve - Google Patents
A kind of passive valve Download PDFInfo
- Publication number
- CN107420552A CN107420552A CN201710301833.5A CN201710301833A CN107420552A CN 107420552 A CN107420552 A CN 107420552A CN 201710301833 A CN201710301833 A CN 201710301833A CN 107420552 A CN107420552 A CN 107420552A
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- Prior art keywords
- valve
- passive
- valve rod
- electromagnetic component
- rod
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000007717 exclusion Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 3
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention discloses a kind of passive valve, including electromagnetic component (6), valve body (11), valve rod (19), balancing weight (18) and spring (17), wherein, electromagnetic component (6) sets around valve rod (19) upper end and controls it to rise and land, and valve body (11) is closed and is opened；Balancing weight (18) and spring (17) are placed in seal closure (8), set around valve rod (19) and accelerate its landing, seal closure (8) upper end connection electromagnetic component (6), lower end connection valve body (11), seal closure (8), electromagnetic component (6) and valve body (11) are that axle is coaxially connected with valve rod (19)；Passive valve provided by the invention can realize passive unlatching, and be particularly suitable for use in reactor passive safety system, when disconnection fault occurs, can cool down reaction shell, avoid that accident occurs, improve the safety coefficient of reactor.
Description
Technical field
The present invention relates to a kind of valve, more particularly to a kind of passive valve, it is applied to machinery equipment field and environment
Security fields, the passive safety system for the nuclear power station that is particularly suitable for use in.
Background technology
Valve is a kind of general engineering goods, and species is various, is widely used, and is played in whole equipment and system
Vital effect.The failure of valve can make system and equipment can not normal work, therefore, valve is in fields such as derived energy chemicals
Play the role of critically important, especially in nuclear power field, even more play very important effect.
Passive system is then a kind of safe and reliable effective means of guarantee system.Passive system refers to need not rely on
Extrinsic power, and establish the security system in the physics laws such as gravity, inertia force, heat transfer.When accident occurs for reactor, no
Manual operation or the pressure intervention of external equipment are needed, but reactivity is controlled by passive system or removes reactor core heat, is made
Reactor safety shutdown.Therefore, the passive property of system is improved, can effectively improve the inherent safety of system.
At present, the motor-driven valve and explosive valve being used in nuclear power plant system need electric current driving to open, and explosion
Valve is irreversible, can only be acted once；Relief valve then needs pressure-driven to open, and is not suitable for the feelings of no pressure difference
Condition.The containment cooling system at generation Ⅲ nuclear power station belongs to passive security system, but the passive property of its valve it is poor, it is necessary to
Electric current is driven, if control system, power supply or valving break down, valve can not be opened, and containment can not be cooled down normally,
Cause serious consequence.
For these reasons, the present inventor is transformed existing technology, have devised a kind of passive valve, the valve
Door does not need electric current driving can to realize passive unlatching, can effectively improve the passive safety of system.
The content of the invention
In order to overcome above mentioned problem, present inventor has performed studying with keen determination, a kind of passive valve, the valve are designed
, can be in its closed in electrified state valve with electromagnetic component, and Open valve when power is off, the reactor that is particularly suitable for use in are passive
Security system, improve the security of reactor.
In particular it is object of the present invention to provide following aspect：
A kind of passive valve, the valve include electromagnetic component 6, valve body 11, valve rod 19, balancing weight 18 and spring 17,
Wherein, electromagnetic component 6 is set around the upper end of valve rod 19, and preferably controllable valve rod 19 rises and landed, and valve body 11 is closed closing and opening
Open；
Balancing weight 18 and spring 17 are placed in seal closure 8, are set around valve rod 19, preferably valve rod 19 can be accelerated to land, excellent
Select seal closure (8) upper end connect electromagnetic component 6, lower end connection valve body 11, more preferably seal closure 8, electromagnetic component 6 and valve body 11 with
Valve rod 19 is that axle is coaxially connected；
Wherein, the lower end of valve rod 19 is provided with seal disc 21, and when valve rod 19 rises, seal disc 21 being capable of valve body 11
Fluid passage.
In normal conditions, electromagnetic component 6 is powered the valve, and fixed core 15 and the adhesive of dynamic iron core 16, valve rod 19 rise
So that the compression spring 17 of balancing weight 18, seal disc 21 are bonded with the fluid passage of valve body 11, valve is closed；
Under accident conditions, electromagnetic component 6 powers off the valve, and adhesive, valve rod do not occur for fixed core 15 and dynamic iron core 16
19 in the presence of self gravitation, the elastic force of spring 17 and balancing weight 18, rapid to fall, valve opening；
The valve is after accident exclusion, and electromagnetic component 6 is powered, and fixed core 15 and the adhesive of dynamic iron core 16, valve rod 19 rise
So that the compression spring 17 of balancing weight 18, seal disc 21 are bonded with the fluid passage of valve body 11, valve is closed.
The application of more than one passive valves, is preferred in reactor passive safety system, more preferably institute
Stating system includes containment 1, water tank 2, normally open valve 3, passive valve 4, wherein, the position of water tank 2 is higher than the position of containment 1,
Most preferably：
Under nominal situation, normally open valve 3 is opened, another passive valve 4 is in energization closed mode, can prevent from cooling down
Water leaks；
When needing to inject cooling water, normally open valve 3 is failure to actuate, and the passive power-off of valve 4 is opened, valve opening, in water tank 2
Cooling water injects under gravity differential pressure action and cools down containment；
Cooling water need not be injected, and when accident or powering-off state occurs in passive valve 4, normally open valve 3 is closed, makes water tank
2 are in isolation with containment 1, ensure the security of system；
After accident excludes, passive valve 4 is closed after being powered, and is opened normally open valve 3, is prevented cooling water leakage,
Water tank 2 is isolated with containment 1, and system recovers normal operating condition.
Beneficial effect includes possessed by the present invention：
(1) passive valve provided by the invention can realize passive unlatching, the passive peace of the reactor that is particularly suitable for use in
Total system, when disconnection fault occurs, the passive unlatching of valve, water cooling containment is cooled down, avoid that accident occurs, improve reaction
The safety coefficient of heap；
(2) passive valve provided by the invention can open and close repeatedly, add the utilization rate of valve, reduce
Manufacturing cost；
(3) passive valve provided by the invention can be used in the working environment of no pressure difference.
Brief description of the drawings
Fig. 1 is shown according to a kind of passive valve of preferred embodiment of the present invention in reactor passive safety system
Application schematic diagram；
Fig. 2 is shown according to a kind of structural representation of the passive valve of preferred embodiment of the present invention；
Fig. 3 is shown according to a kind of structural representation of the seal disc of preferred embodiment of the present invention.
Drawing reference numeral explanation：
1- containments
2- water tanks
3- normally open valves
4- passive valves provided by the invention
5- wire barrels
6- electromagnetic components
8- seal closures
9- sealing rings
11- valve bodies
15- fixed cores
16- dynamic iron cores
17- springs
18- balancing weights
19- valve rods
21- seal discs
Embodiment
Below by drawings and examples, the present invention is described in more detail.Pass through these explanations, the features of the present invention
It will be become more apparent from clearly with advantage.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
According to a kind of passive valve provided by the invention, the valve can be with passive unlatching, as shown in Figure 2, institute
Stating valve 4 includes electromagnetic component 6, valve body 11, valve rod 19, balancing weight 18 and spring 17, wherein, electromagnetic component 6 is around valve rod 19
Upper end is set, and preferably electromagnetic component 6 can control valve rod 19 to rise and land, and valve body 11 is closed and is opened；Electromagnetic component 6 is logical
Cross wire barrel 5 to be connected with power supply, it is preferred that electromagnetic component 6 is connected with power supply and stand-by power supply simultaneously, to greatest extent can be increased
The reliability of adding system；
Wherein, in a preferred embodiment, in electromagnetic component 6, above the axle of valve rod 19, it is additionally provided with fixed core
15, more preferably fixed core 15 is identical with the diameter of valve rod 19, can be installed simultaneously so in same passage fixed core 15 with
Valve rod 19, it is not necessary to which extra wide houses the passage of fixed core 15, is not only convenient for manufacturing, can also keep fixed core 15 and valve rod 19
In correspondence with each other.
Preferably, the fixed core 15 is made up of soft iron, can quickly produce inductive electromagnetic when electromagnetic component 6 is powered,
And electromagnetic induction phenomenon rapidly disappears after the power-off of electromagnetic component 6.
Below electromagnetic component 6, the seal closure 8 is integrally formed or is welded to connect seal closure 8, have sealing space and with
The connecting portion that electromagnetic component 6 connects, in one embodiment, the seal closure 8 is bolted with electromagnetic component 6；It is close
Sealing cover 8 can be made of mild steel, stainless steel, steel alloy or ordinary steel.
Balancing weight 18 and spring 17 are set around valve rod 19, and in seal closure 8, the two can speed up the drop of valve rod 19
Fall：When electromagnetic component 6 is powered, fixed core 15 attracts each other with valve rod 19, and band ovable valve stem 19 rises so that balancing weight 18 compresses
Spring 17, now, the attraction of fixed core 15 and valve rod 19 are larger, the gravity of gravity, balancing weight 18 more than valve rod 19 itself
And elastic force three's sum of spring 17；After electromagnetic component 6 powers off, the attraction between fixed core 15 and valve rod 19 disappears,
Under the elastic force effect of the gravity and spring 17 of gravity, balancing weight 18 in valve rod 19 itself, valve rod 19 hurtles down, and liquid leads to
Road is opened, and realizes the passive unlatching of valve.
The setting of balancing weight 18 and spring 17, the rapid descent of valve rod 19 can not only be promoted, can also fully solve to work as
When valve liquid outflow side produces pressure, the problem of valve rod 19 is difficult to fall, the safety and reliability of valve is added.
In one embodiment, as shown in Figure 2, the spring 17 is sheathed on the periphery of valve rod 19, and its top connection is close
Sealing cover 8, spring 17 are arranged at the top of balancing weight 18, the compression spring 17 when balancing weight 18 rises；When balancing weight 18 declines, bullet
Spring 17 imposes elastic force to balancing weight 18.
Also, in one embodiment, valve rod 19 is circumferentially with the convex edge of carrying balancing weight 18, the convex edge and valve rod
19 is affixed, and balancing weight 18 is sheathed on the periphery of valve rod 19；
Balancing weight 18 can also use other connected modes, such as be welded and fixed.
The spring 17 can use ordinary steel, high-quality steel, steel alloy, mild steel to prepare, preferably standby using high-quality steel；
The balancing weight 18 is prepared using the larger material of density, such as can be cast iron, ordinary steel, steel alloy, it is preferred to use alloy
Steel is standby, enables to balancing weight 18 heavier, not perishable, so as to ensure its counterbalancing effect.
Wherein, seal closure 8 can use stainless steel or steel alloy to prepare.
In the present invention, in one embodiment, the upper end of seal closure 8 connection electromagnetic component 6, lower end connects valve body 11, excellent
Select seal closure 8, electromagnetic component 6 and valve body 11 coaxially connected for axle with valve rod 19, seal closure 8 and valve body 11 can be integrally formed,
Can also bolt connection, can also be welded and fixed, this can select different connected modes according to actual conditions.
Valve body 11 provides the flow channel of liquid, the opening and closing to flow channel, that is to say, that be turned on and off
Valve, it can flow liquid through or be trapped.Preferably, the valve body 11 uses corrosion-resistant radiation-resistant low-carbon or Ultra-low carbon Ovshinsky
It is prepared by body stainless steel, it is possible to increase the intensity of valve body 11, and increase the service life.
In a kind of preferred embodiment, as shown in Figure 2, stopper is additionally provided with the fluid passage of valve body 11, with valve rod
The shape of seal disc 21 that 19 lower ends are set is adapted, and when valve rod 19 rises, the stopper can be prevented on seal disc 21 continues
Rise, so as to realize that seal disc 21 is in close contact with the stopper of valve body 11, prevent the circulation of liquid, and then the liquid of valve body 11 leads to
Road.
Preferably dam effect to realize, can also in the upper end of seal disc 21, or the lower end of the stopper of valve body 11,
The position that seal disc 21 contacts with valve body 11, sealing ring is set, not only strengthens sealing effectiveness, the two can also be slowed down touched and cause
Abrasion, increase the service life.
It is close in order to prevent liquid from entering from the gap of valve rod 19 and seal closure 8 during valve rod 19 rises and landed
Sealing cover 8, in one embodiment, can on valve rod 19 corresponding position i.e., when valve rod 19 rises, valve rod 19 and valve body
11 contact surface, or when valve rod 19 declines, valve rod 19 strengthens sealing with the contact surface of seal closure 8, setting sealing ring
Energy.
, can also be at the contact surface that sealing ring is arranged on to valve body 11 and seal closure 8 in another embodiment.
The seal disc 21 of valve rod 19 can be as shown in Figure 2 discoid, can also arbitrarily change shape on its basis,
For example, as shown in Figure 3, on the premise of keeping seal disc 21 to be in close contact with the stopper of the fluid passage of valve body 11, also
It can will be expanded in the middle part of seal disc, and with the circumferential formation obtuse angle of valve rod 11, be more beneficial for pressure release when seal disc 21 moves up and down and make
With.
In one embodiment, the valve rod 19 is made up of steel alloy；It is described in a kind of preferred embodiment
The upper end of valve rod 19 can also be prepared using soft iron, and the soft iron part of valve rod 19 is dynamic iron core 16, when electromagnetic component 6 is powered
Magnetic can be produced, dynamic iron core 16 can strengthen the adhesive active force with fixed core 15.
Passive valve provided by the invention passive can be opened, with using current technique to open phase in the prior art
Than more safe and secure；Meanwhile spring and balancing weight acceleration are provided with valve and ensures valve opening, electromagnetic component
Using power supply and stand-by power supply, safety coefficient is improved.
In normal conditions, electromagnetic component 6 is powered valve provided by the invention, fixed core 15 and the adhesive of dynamic iron core 16, valve
Bar 19, which rises, causes the compression spring 17 of balancing weight 18, and seal disc 21 is bonded with the fluid passage of valve body 11, and valve is closed；
Under accident conditions, electromagnetic component 6 powers off the valve, and adhesive, valve rod do not occur for fixed core 15 and dynamic iron core 16
19 in the presence of self gravitation, the elastic force of spring 17 and balancing weight 18, rapid to fall, valve opening；
The valve is after accident exclusion, and electromagnetic component 6 is powered, and fixed core 15 and the adhesive of dynamic iron core 16, valve rod 19 rise
So that the compression spring 17 of balancing weight 18, seal disc 21 are bonded with the fluid passage of valve body 11, valve is closed.
Therefore, system of the invention can ensure and realize in all cases the unlatching of valve, additionally it is possible to after powered up
Close, can reuse, this also allows for managing.
Present invention also offers the application of the passive valve, preferably described valve is used for reactor non-passive safety system
In system, as shown in figure 1, more preferably described system includes containment 1, water tank 2, normally open valve 3, passive valve 4, wherein, water tank 2
Position is higher than the position of containment 1, in a kind of most preferably embodiment, wherein,
Under nominal situation, normally open valve 3 is opened, another passive valve 4 is in energization closed mode, can prevent from cooling down
Water leaks；
When needing to inject cooling water, normally open valve 3 is failure to actuate, and the passive power-off of valve 4 is opened, valve opening, in water tank 2
Cooling water injects under gravity differential pressure action and cools down containment；
Cooling water need not be injected, and when accident or powering-off state occurs in passive valve 4, normally open valve 3 is closed, makes water tank
2 are in isolation with containment 1, ensure the security of system；
After accident excludes, passive valve 4 is closed after being powered, and is opened normally open valve 3, is prevented cooling water leakage,
Water tank 2 is isolated with containment 1, and system recovers normal operating condition.
Valve provided by the invention can realize passive unlatching, and be particularly suitable for use in reactor passive safety system, when
During generation disconnection fault, reaction shell can be cooled down, avoids that accident occurs, improves the safety coefficient of reactor.
In the description of the invention, it is necessary to explanation, the instruction such as term " on ", " under ", " interior ", " outer " " preceding " " rear "
Orientation or position relationship be based on the orientation or position relationship under working condition of the present invention, be for only for ease of the description present invention and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific azimuth configuration
And operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd ", " the 4th " are only used
In description purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation " " phase
Even " " connection " should broadly understood, for example, it may be fixedly connected or be detachably connected, or the connection of one is general
It is logical；Can be mechanical connection or electrical connection；Can be directly connected to, can also be indirectly connected with by intermediary, can
To be the connection of two element internals.For the those of ordinary skill in this domain, it can understand that above-mentioned term exists with concrete condition
Concrete meaning in the present invention.
In addition, as long as the technical characteristic being related in invention described below different embodiments is not formed each other
Conflict can be combined with each other.
Above in association with preferred embodiment, the present invention is described, but these embodiments are only exemplary
, only play illustrative effect.On this basis, a variety of replacements and improvement can be carried out to the present invention, these each fall within this
In the protection domain of invention.
Claims (10)
1. a kind of passive valve, it is characterised in that the valve includes electromagnetic component (6), valve body (11), valve rod (19), matched somebody with somebody
Pouring weight (18) and spring (17), wherein, electromagnetic component (6) is set around valve rod (19) upper end, on preferably controllable valve rod (19)
Rise and land, valve body (11) is closed and is opened.
2. passive valve according to claim 1, it is characterised in that balancing weight (18) and spring (17) are placed in seal closure
(8) in, set around valve rod (19), can preferably accelerate valve rod (19) to land, preferably seal closure (8) upper end connection electromagnetic component
(6), lower end connection valve body (11), more preferably seal closure (8), electromagnetic component (6) and valve body (11) are that axle is coaxial with valve rod (19)
Connection.
3. passive valve according to claim 1 or 2, it is characterised in that also include in the electromagnetic component (6) and valve
The coaxial fixed core (15) of bar (19), preferably described fixed core (15) is identical with valve rod (19) diameter, is more preferably located at valve rod
(19) top.
4. passive valve according to claim 3, it is characterised in that the fixed core (15) and valve rod (19) are in electromagnetism
Part (6) can attract each other when being powered, and band ovable valve stem (19) rises so that balancing weight (18) compression spring (17).
5. the passive valve according to one of Claims 1-4, it is characterised in that the valve body (11) is led to liquid
Road, liquid passes through the fluid passage after valve opening.
6. the passive valve according to one of claim 1 to 5, it is characterised in that valve rod (19) bottom is provided with close
Closing disk (21), when valve rod (19) rises, seal disc (21) is capable of the fluid passage of valve body (11)；
It is preferred that the valve rod (19) is circumferentially with the convex edge of carrying balancing weight (18), the convex edge and valve rod (19) are affixed, more excellent
Apolegamy pouring weight (18) is sheathed on valve rod (19) periphery.
7. the passive valve according to one of claim 1 to 6, it is characterised in that connection is close above the spring (17)
Sealing cover (8), and be arranged above balancing weight (18), the spring (17) is sheathed on valve rod (19) periphery.
8. the passive valve according to one of claim 1 to 7, it is characterised in that the valve body (11) is by low-carbon or super
Low carbon stainless steel material is made, and the fixed core (15) is made up of soft iron, and the valve rod (19) is made up of steel alloy, preferably described
Valve rod (19) upper end is made up of soft iron, and soft iron part is dynamic iron core (16) in the valve rod (19).
9. the passive valve according to one of claim 1 to 8, it is characterised in that
In normal conditions, electromagnetic component (6) is powered the valve, fixed core (15) and dynamic iron core (16) adhesive, on valve rod (19)
Rise and cause balancing weight (18) compression spring (17), seal disc (21) is bonded with the fluid passage of valve body (11), and valve is closed；
The valve is under accident conditions, and electromagnetic component (6) power-off, adhesive, valve rod do not occur for fixed core (15) and dynamic iron core (16)
(19) it is rapid to fall in the presence of self gravitation, the elastic force of spring (17) and balancing weight (18), valve opening；
After accident exclusion, electromagnetic component (6) is powered the valve, fixed core (15) and dynamic iron core (16) adhesive, on valve rod (19)
Rise and cause balancing weight (18) compression spring (17), seal disc (21) is bonded with the fluid passage of valve body (11), and valve is closed.
10. the application of the passive valve according to one of claim 1 to 9, it is preferred for reactor non-passive safety system
System, more preferably described system include containment (1), water tank (2), normally open valve (3), passive valve (4), wherein, water tank (2) position
The position higher than containment (1) is put, it is most preferably as follows：
Under nominal situation, normally open valve (3) is opened, another passive valve (4) is in energization closed mode, can prevent from cooling down
Water leaks；
When needing to inject cooling water, normally open valve (3) is failure to actuate, and passive valve (4) power-off is opened, valve opening, in water tank (2)
Cooling water under gravity differential pressure action, inject and cool down containment；
Cooling water need not be injected, and when accident or powering-off state occurs in passive valve (4), normally open valve (3) is closed, makes water tank
(2) isolation is in containment (1), ensures the security of system；
After accident excludes, passive valve (4) is closed after being powered, and opens normally open valve (3), prevents cooling water leakage,
Water tank (2) is isolated with containment (1), and system recovers normal operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301833.5A CN107420552A (en) | 2017-05-02 | 2017-05-02 | A kind of passive valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710301833.5A CN107420552A (en) | 2017-05-02 | 2017-05-02 | A kind of passive valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107420552A true CN107420552A (en) | 2017-12-01 |
Family
ID=60424814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710301833.5A Pending CN107420552A (en) | 2017-05-02 | 2017-05-02 | A kind of passive valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN107420552A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200395135A1 (en) * | 2019-06-14 | 2020-12-17 | Ge-Hitachi Nuclear Energy Americas Llc | Integral pressure vessel penetrations and systems and methods for using and fabricating the same |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019906A (en) * | 2002-06-20 | 2004-01-22 | Saginomiya Seisakusho Inc | Direct acting solenoid valve |
| CN2630576Y (en) * | 2003-06-10 | 2004-08-04 | 武汉大学 | Electromagnetic valve |
| CN101839362A (en) * | 2010-06-18 | 2010-09-22 | 欧好光电控制技术（上海）有限公司 | Normally closed semiautomatic gas emergency cut-off magnetic valve |
| CN202165674U (en) * | 2011-05-11 | 2012-03-14 | 陈国顺 | Self-protection type electrically and electromagnetically driven double-purpose electromagnetic valve |
| CN202927185U (en) * | 2012-09-20 | 2013-05-08 | 浙江汉特姆阀门有限公司 | Normally-closed type gas safety valve |
| CN104167229A (en) * | 2014-04-24 | 2014-11-26 | 国核华清（北京）核电技术研发中心有限公司 | Passive containment shell condensed water injection system |
| CN204664519U (en) * | 2015-04-24 | 2015-09-23 | 王树先 | Normally closed type gas emergency cut-off valve |
| CN106328223A (en) * | 2016-09-05 | 2017-01-11 | 中广核研究院有限公司 | Novel passive safety shell energy control system |
| CN206958266U (en) * | 2017-05-02 | 2018-02-02 | 华北电力大学 | A kind of passive valve |
-
2017
- 2017-05-02 CN CN201710301833.5A patent/CN107420552A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004019906A (en) * | 2002-06-20 | 2004-01-22 | Saginomiya Seisakusho Inc | Direct acting solenoid valve |
| CN2630576Y (en) * | 2003-06-10 | 2004-08-04 | 武汉大学 | Electromagnetic valve |
| CN101839362A (en) * | 2010-06-18 | 2010-09-22 | 欧好光电控制技术（上海）有限公司 | Normally closed semiautomatic gas emergency cut-off magnetic valve |
| CN202165674U (en) * | 2011-05-11 | 2012-03-14 | 陈国顺 | Self-protection type electrically and electromagnetically driven double-purpose electromagnetic valve |
| CN202927185U (en) * | 2012-09-20 | 2013-05-08 | 浙江汉特姆阀门有限公司 | Normally-closed type gas safety valve |
| CN104167229A (en) * | 2014-04-24 | 2014-11-26 | 国核华清（北京）核电技术研发中心有限公司 | Passive containment shell condensed water injection system |
| CN204664519U (en) * | 2015-04-24 | 2015-09-23 | 王树先 | Normally closed type gas emergency cut-off valve |
| CN106328223A (en) * | 2016-09-05 | 2017-01-11 | 中广核研究院有限公司 | Novel passive safety shell energy control system |
| CN206958266U (en) * | 2017-05-02 | 2018-02-02 | 华北电力大学 | A kind of passive valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200395135A1 (en) * | 2019-06-14 | 2020-12-17 | Ge-Hitachi Nuclear Energy Americas Llc | Integral pressure vessel penetrations and systems and methods for using and fabricating the same |
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Application publication date: 20171201 |