CN207975288U - Explosion-wave-preventing Ventilating valve and ventilating system comprising the valve - Google Patents
Explosion-wave-preventing Ventilating valve and ventilating system comprising the valve Download PDFInfo
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- CN207975288U CN207975288U CN201820175465.4U CN201820175465U CN207975288U CN 207975288 U CN207975288 U CN 207975288U CN 201820175465 U CN201820175465 U CN 201820175465U CN 207975288 U CN207975288 U CN 207975288U
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Abstract
The utility model discloses a kind of explosion-wave-preventing Ventilating valves, it includes valve body (1), body cavity is the air access way (7) of the valve, the valve further includes the valve plate (2) and playback mechanism set on body cavity, the playback mechanism includes the compressed spring being divided at left and right sides of valve plate, valve plate is in the position that air access way can be made to keep air-flow unobstructed of body cavity when ventilating system normal operation, when external pressure is more than setting pressure, valve plate moves, its end face blocks the air inlet of air access way, to close the air access way.Also disclose a kind of ventilating system including above-mentioned valve.The Ventilating valve is simple and reliable for structure, is easily installed dismounting, and ventilating system can be made to effectively cope with outdoor explosion wave or cyclone.
Description
Technical field
The utility model belongs to valve technology field, is related to a kind of explosion-wave-preventing Ventilating valve and divulges information comprising the explosion-wave-preventing
The ventilating system of valve.
Background technology
The part workshop at generation Ⅲ nuclear power station has blast protection shock wave requirement, and has continued two generation nuclear power stations and needed to prevent
The requirement of outdoor cyclone, and the outdoor fresh air mouth and exhaust outlet of ventilating system need constant ventilation in normal conditions, explosion
After shock wave (or cyclone) occurs, ventilation opening becomes shock wave (or high negative pressure) and is passed to indoor path.For this reason, it may be necessary to logical
Explosion-wave-preventing valve is arranged in air port, which is required to realize following functions：It does not influence to divulge information under normal condition, in blast impulse
Wave (or cyclone) can close after arriving, to prevent shock wave (or high negative pressure) from being damaged to indoor occupant equipment.
The explosion-wave-preventing valve spool of the generation Ⅲ nuclear power project in China is to use external product, but this kind of product is big at present
It is mostly complicated.For example the spool of one of which external product is cylinder, which is located in vent passages, and utilizes torsion
Power spring is limited and is resetted to it.But this valve mechanism is complicated, and dismounting installation is inconvenient.In addition, this type valve core valence
Lattice are expensive, thereby increases and it is possible to there is a problem of what outlet was limited, to promoting the outlet of China's nuclear power generating sets to form obstacle.
Utility model content
Technical problem to be solved in the utility model is aiming at the above shortcomings existing in the prior art, to provide a kind of knot
Structure is simple and reliable, is easily installed dismounting, and ventilating system can be made to effectively cope with the anti-of outdoor explosion wave or cyclone
Deflagration wave Ventilating valve and ventilating system comprising the Ventilating valve.
In order to solve the above technical problems, the utility model adopts the following technical solution：
A kind of explosion-wave-preventing Ventilating valve, including valve body, body cavity are the air access way of the valve, wherein the valve
Door further includes the valve plate and playback mechanism set on body cavity, and the playback mechanism includes the pressure being divided at left and right sides of valve plate
Contracting spring, valve plate is in the position that air access way can be made to keep air-flow unobstructed of body cavity when ventilating system normal operation
It sets, when external pressure is more than setting pressure, valve plate moves, and end face blocks the air inlet of air access way, to close
State air access way.
Preferably, it is additionally provided with support guide bar in the body cavity, guide groove, support guide are provided on the valve plate
One end of bar is fixed with valve body, and the other end is arranged in the guide groove of valve plate.
It is further preferred that the support guide bar uses cylindrical bar.
Preferably, the guide groove is set to the middle part of valve plate front end face and/or rear end face, the support in single guide groove
The quantity of guide rod is two.
Preferably, the elastic force of the compressed spring is equal to the setting pressure of the valve.
It is further preferred that the both ends of compressed spring are inconsistent with valve plate and valve body respectively.
It may further be preferable that position corresponding with compressed spring is equipped with spring cup, compressed spring energy on the valve body
It is enough to be taken out from spring cup.
Preferably, at left and right sides of valve plate, per side, the compressed spring quantity of setting is two, two compressed springs
It is symmetrically distributed on left side/right side of valve plate；Alternatively, the compressed spring quantity of setting is one per side, the compression bullet
Spring is correspondingly arranged in the middle part of valve plate left side/right side.
Preferably, the body cavity is divided into three sections, that is, be sequentially communicated left section, stage casing and right section, the valve plate hold
It is contained in stage casing, valve plate can completely enclose the junction in left section and stage casing close to left section of one end end face, and valve plate is close to right
One end end face of section can completely enclose the junction in right section and stage casing.
It is further preferred that the shape in the stage casing is arc, the shape of valve plate is nearly cuboid, valve plate occluded air into
When going out channel arc compatible with the arc in stage casing is set as with left section or the right section of position being bonded.
The utility model also provides a kind of ventilating system comprising Ventilating valve, the Ventilating valve use above-mentioned valve
Door.
The utility model explosion-wave-preventing Ventilating valve has the beneficial effect that：
The valve is in the case of ventilating system normal operation, since what valve plate was in body cavity can make air disengaging logical
The position (i.e. rotine positioning) that road keeps air-flow unobstructed, the perforation of internal air access way, therefore disclosure satisfy that positive normal open
The needs of wind；When shock wave occurs in outdoor and shock wave involves the pressure of valve and is more than the setting pressure of valve, valve plate exists
The position (i.e. unconventional position) for closing the air access way can be moved under the action of the shock wave, i.e., so that valve
It closes, to prevent shock wave from getting in, so as to protect indoor occupant and equipment, waits for that the pressure of shock wave is decreased below valve
After the setting pressure of door or disappearance, valve plate can reset under the action of playbacking mechanism, i.e., valve plate is moved to its rotine positioning, from
And valve is made to automatically open, restore ventilation；When outdoor there is cyclone and negative pressure value of the cyclone at valve be more than valve
Setting pressure when, valve plate can be moved to unconventional position under the action of the negative pressure value, to occluded air access way,
I.e. so that valve is closed, to prevent cyclone from jeopardizing indoor occupant and destroy equipment, wait for cyclone under the negative pressure value at valve
After being brought down below the setting pressure of valve or disappearing, valve plate can reset under the action of playbacking mechanism, i.e., valve plate is moved to it
Rotine positioning restores ventilation to make valve automatically open.As it can be seen that the isolation of the valve, triggering and major function do not depend on
It is inputted in extraneous power, therefore there is passive characteristic and high reliability.
Compressed spring can be put into free state in valve body, can also one or both ends fix be put into, it is seen that the valve also has
Have the advantages that it is simple in structure, be easy to make, it is of low cost.
The utility model explosion-wave-preventing Ventilating valve is especially suitable in various ventilating systems.
Description of the drawings
Fig. 1 is the structural schematic diagram of explosion-wave-preventing Ventilating valve in the utility model specific embodiment 1；
Fig. 2 is the outline drawing of explosion-wave-preventing Ventilating valve in the utility model specific embodiment 2；
Fig. 3 be ventilating system normal operation when Fig. 1 in explosion-wave-preventing Ventilating valve sectional view；
Fig. 4 is the sectional view of explosion-wave-preventing Ventilating valve in Fig. 1 when explosion wave arrives；
Fig. 5 is the sectional view of explosion-wave-preventing Ventilating valve in Fig. 1 when cyclone arrives.
In figure：1- valve bodies, 2- valve plates, 3- support guide bars, the left sides 4- spring, the right sides 5- spring, 6- spring cups, 7- air
Access way.
Specific implementation mode
Below in conjunction with the attached drawing in the utility model, the technical solution in the utility model is carried out clear, complete
Description, it is clear that described embodiment is a part of the embodiment of the utility model, instead of all the embodiments.Based on this
Embodiment in utility model, those of ordinary skill in the art are obtained all without making creative work
Other embodiment shall fall within the protection scope of the present invention.
The utility model provides a kind of explosion-wave-preventing Ventilating valve comprising valve body, body cavity be the valve air into
Go out channel, which further includes the valve plate and playback mechanism set on body cavity, and the playback mechanism includes being divided into valve plate
The compressed spring of the left and right sides, what valve plate was in body cavity when ventilating system normal operation can make air access way keep gas
It circulates smooth position, when external pressure is more than setting pressure, valve plate moves, and end face blocks the air inlet of air access way
Mouthful, to close the air access way.
This implementation is novel also to provide a kind of ventilating system comprising Ventilating valve, the Ventilating valve use above-mentioned valve.
Embodiment 1：
Term positions such as " left side " " right side " " preceding " " rear " involved in the names of the parts in the present embodiment (such as hereinafter
" left side spring ", " right side spring ", " left side " mentioned) it is that the position of all parts on paper is in 1-5 with reference to the accompanying drawings
The description for facilitating the relative position relation of narration all parts and carrying out, these term positions are not represented to residing for the component
Position carries out absolute orientation and limits, for example " left side spring " can also be named with " the first spring ", and " right side spring " also may be used
To be named with " second spring ".
Valve in the present embodiment is the explosion-wave-preventing Ventilating valve used in a kind of ventilating system.As shown in Figure 1, this implementation
Explosion-wave-preventing Ventilating valve in example includes valve body 1, inner cavity is provided on valve body, body cavity is the air access way of the valve
7.As in Figure 3-5, which further includes valve plate 2 and can make the playback mechanism of valve plate automatic homing.Valve plate 2 is set in valve body
In chamber (air access way), it to be used for the air access way 7 described in explosion wave (or cyclone) arrival rear enclosed.
In the present embodiment, valve body 1 and valve plate 2 are all made of carbon steel, stainless steel or all kinds of steel alloys and are made.
The playback mechanism includes the compressed spring for the left and right side for being divided into valve plate, i.e. left side spring 5 and right side bullet
Spring 4, left side spring 5 is equal to the active force of valve plate 2 with right side spring 4, and valve plate is in valve body when ventilating system normal operation
Chamber can make the position (rotine positioning) that air access way keeps air-flow unobstructed, when external pressure is more than the setting pressure of the valve
Valve plate, which is moved to its end face, when power can block the air inlet position (unconventional position) of air access way, so that valve plate seals
Close the air access way 7.
Preferably, it is additionally provided with support guide bar 3 in body cavity, guide groove, one end of support guide bar are provided on valve plate
It is fixed with valve body, the other end is arranged in the guide groove of valve plate.In the present embodiment, guide groove be set to valve plate front end face and/or
The middle part of rear end face.To ensure that valve plate 2 only can make translational motion along guide groove when moving.Preferably, support guide bar 3
Friction is reduced can reduce the contact area between guide groove and support guide bar using cylindrical bar.It is furthermore preferred that one
The quantity of used support guide bar is two in guide groove, i.e., in a guide groove, support guide bar uses bicylindrical
Bar designs.
Body cavity uses the big structure small in ends in middle part, for accommodating valve plate 2, and makes valve plate that can not be detached from valve body
Inner cavity.In the present embodiment, body cavity is divided into three sections, that is, be sequentially communicated left section, stage casing and right section.Valve plate 2 is placed in stage casing
Interior, valve plate can completely enclose the junction in left section and stage casing close to left section of left side, and valve plate is close to the right section of right end
Face can completely enclose the junction in right section and stage casing.In the present embodiment, the volume in stage casing is more than left section and right section, valve plate
Height of the height higher than left section and right section, the length of valve plate is also longer than left section and right section.
Preferably, the shape in stage casing is arc, to reduce resistance of the valve in normal ventilation.In the present embodiment, valve plate 2
Shape be nearly cuboid (i.e. its shape is very close to cuboid), due to be when valve plate is moved to unconventional position with left section or
Right section (air inlet of air access way) be bonded, therefore can correspondingly by the left side of valve plate or right side with left section or
The position of right section of fitting is also configured as arc, which is adapted with the arc in stage casing, so that the two can be bonded completely.
In the present embodiment, the both ends of each compressed spring are inconsistent with valve plate and valve body respectively, but compressed spring not with
Valve body and valve plate are fixedly connected.It is preferred that left side spring 5 and right side spring 4 are symmetrical.
Wherein, the elastic force of compressed spring determines the minimal impact power of valve plate action, i.e. compressed spring of the valve plate per side
Elastic force be equal to the valve setting pressure, so as to according to the setting pressure of actual requirement select that there is corresponding elastic force
Compressed spring, and setting pressure can be adjusted by replacement compressed spring (minimum closes pressure).
Preferably, position corresponding with each compressed spring is equipped with spring cup 6 on valve body, opens spring cup 6, it will be able to will
Compressed spring is taken out from spring cup 6, in order to carry out installation replacement or maintenance to compressed spring.
The quantity of compressed spring of the valve plate per side determines the installation site of compressed spring.As shown in Figure 1, the present embodiment
In, the quantity of corresponding compressed spring is two on each side at left and right sides of valve plate, then the number of the compressed spring of valve plate both sides
Amount is four.That is the quantity of left side spring 5 is two, which is symmetrically distributed in the both ends of valve plate left side；It is right
The quantity of lateral spring 4 is two, which is symmetrically distributed in the both ends of valve plate right side.
Correspondingly, the quantity of spring cup 6 is four, the positions of the four spring cups position phase with four compressed springs respectively
It is corresponding.
Certainly, the quantity of compressed spring of the valve plate per side can also use multiple (three or more), specifically can be according to reality
The position of multiple compressed springs is arranged in border situation, so that multiple compressed springs correspondence is arranged on the different location of valve plate.
As shown in figure 3, under the accidental conditions of ventilating system, support guide bar 3 is right in the guide groove of valve plate 2
Lateral spring 4 and left side spring 5 matching to valve plate 2, valve plate 2 are in the rotine positioning in body cavity stage casing, at this time valve plate
Do not contacted with body cavity, will not airflow partition perforation, to ensure to take wind or air draft when ventilating system normal operation.
As shown in figure 4, working as setting pressure of the pressure more than the valve that shock wave occurs in outdoor and shock wave involves valve
When power, valve plate 2 is moved to the left under the action of support guide bar 3 along guide groove, until valve plate abuts the left side of body cavity
Air inlet, the i.e. left side of valve plate completely enclose the junction of left section of body cavity and stage casing, and right side spring 4 extends, left
Lateral spring 5 is compressed, and air access way 7 is closed, and prevents the propagation of pressure, prevents shock wave from getting in, and protection is indoor
Personnel and equipment.
As shown in figure 5, working as setting pressure of the pressure more than the valve that cyclone occurs in outdoor and cyclone involves valve
When power, 2 valve plate 2 of valve plate moves right under the action of support guide bar 3 along guide groove, until valve plate is close to body cavity
Right side air inlet, the i.e. right side of valve plate completely enclose the junction of right section of body cavity and stage casing, and right side spring 4 is pressed
Contracting, left side spring 5 extend, and air access way 7 is closed, and prevents the propagation of pressure, prevents cyclone negative pressure from causing to interior
The injury of personnel and equipment.
After shock wave or cyclone descend below setting pressure or disappear, spring-force driven dual of the valve plate 2 in compressed spring
Under (i.e. the thrust of right side spring 4 and left side spring 5 is poor) be moved to its rotine positioning (i.e. position in Fig. 3), valve realizes oneself
It is dynamic to open, restore ventilation.
As it can be seen that the isolation of the valve, triggering and its major function are inputted independent of extraneous power, therefore with non-
It can dynamic characteristic and high reliability.
The setting that valve in the present embodiment is carried out primarily directed to the production domesticization of generation Ⅲ nuclear power equipment, for ventilation
The outdoor explosion wave of system reply and cyclone propose practicable equipment design scheme, realize blast protection shock wave
The production domesticization of valve.
A kind of ventilating system is also disclosed in the present embodiment, which includes the Ventilating valve in the present embodiment.It is preferred that
, which includes multiple above-mentioned Ventilating valves, so that the valve in the present embodiment can be applied in combination.It is specific next
It says, according to the requirement of ventilating system air quantity and allowable pressure drop, multiple above-mentioned Ventilating valves can be applied in combination, multiple ventilation valves
Door can combine on a frame, or be separately mounted on different frames.
Explosion-wave-preventing Ventilating valve in the present embodiment is especially suitable in the ventilating system of nuclear power station, certain valve also may be used
For in the ventilating system of non-nuclear power station project required with similar functions.
Embodiment 2：
As shown in Fig. 2, the present embodiment difference from example 1 is that：The quantity of each side compression spring of valve plate is not
Same, spring cup position is different.
In the present embodiment, the quantity of compressed spring of the valve plate per side is one, and each compressed spring corresponds to valve plate or so
The middle part of end face.Specifically, i.e. the quantity of left side spring 5 is one, and left side spring is arranged in the middle part of the left side of valve plate, right side
The quantity of spring 4 is one, and right side spring is arranged in the middle part of the right side of valve plate, and left side spring and right side spring correspondence are set
It sets.
Correspondingly, the quantity of spring cup is two, the positions of two spring cups of valve body respectively with left side spring and right side bullet
The position of spring is corresponding.It should be noted that since valve plate is overlapped with the center of valve body, and spring cup is provided in valve body
On outer wall, in Fig. 1 herein position be sky, therefore in the present embodiment for convenience setting spring cup 6, the structure of valve outer wall with
Structure in Fig. 1 is slightly different, i.e., has outer wall in position of the valve body in the middle part of corresponding air access way, for installing bullet
Spring lid.
The other structures of valve are in the same manner as in Example 1 in the present embodiment, and which is not described herein again.
It is understood that embodiment of above is merely to illustrate that the principles of the present invention and uses exemplary
Embodiment, however the utility model is not limited thereto.For those skilled in the art, this is not being departed from
In the case of the spirit and essence of utility model, various changes and modifications can be made therein, these variations and modifications are also considered as this reality
With novel protection domain.
Claims (10)
1. a kind of explosion-wave-preventing Ventilating valve, including valve body (1), body cavity is the air access way (7) of the valve, feature
It is, which further includes the valve plate (2) and playback mechanism set on body cavity, and the playback mechanism includes being divided into valve plate
The compressed spring of the left and right sides, what valve plate was in body cavity when ventilating system normal operation can make air access way keep gas
It circulates smooth position, when external pressure is more than setting pressure, valve plate moves, and end face blocks the air inlet of air access way
Mouthful, to close the air access way.
2. explosion-wave-preventing Ventilating valve as described in claim 1, which is characterized in that be additionally provided with support guide in the body cavity
Bar (3) is provided with guide groove on the valve plate, and one end and the valve body of support guide bar are fixed, and the other end is arranged in the guiding of valve plate
In slot.
3. explosion-wave-preventing Ventilating valve as claimed in claim 2, which is characterized in that the support guide bar uses cylindrical bar；Institute
The quantity for stating support guide bar of the guide groove in the middle part of valve plate front end face and/or rear end face, single guide groove is two.
4. explosion-wave-preventing Ventilating valve as described in claim 1, which is characterized in that the elastic force of the compressed spring is equal to the valve
Setting pressure.
5. explosion-wave-preventing Ventilating valve as claimed in claim 4, which is characterized in that the both ends of compressed spring respectively with valve plate and valve
Body is inconsistent.
6. explosion-wave-preventing Ventilating valve as claimed in claim 5, which is characterized in that corresponding with compressed spring on the valve body
Position is equipped with spring cup (6), and compressed spring can be taken out from spring cup.
7. explosion-wave-preventing Ventilating valve as claimed in claim 6, which is characterized in that at left and right sides of valve plate, the setting per side
The quantity of compressed spring is two, which is symmetrically distributed on left side/right side of valve plate；Alternatively, each
The quantity of the compressed spring of side setting is one, which is correspondingly arranged in the middle part of valve plate left side/right side.
8. such as claim 1-7 any one of them explosion-wave-preventing Ventilating valves, which is characterized in that the body cavity is divided into three
Section, that is, be sequentially communicated left section, stage casing and right section, the valve plate is contained in stage casing, and valve plate is close to left section of one end end face energy
Enough to completely enclose the junction in left section and stage casing, valve plate can be by right section and the junction in stage casing close to right section of one end end face
It is completely enclosed.
9. explosion-wave-preventing Ventilating valve as claimed in claim 8, which is characterized in that the shape in the stage casing is arc, valve plate
Shape is nearly cuboid, is set as the arc with stage casing with left section or the right section of position being bonded when valve plate occluded air access way
The compatible arc of shape.
10. a kind of ventilating system, including Ventilating valve, which is characterized in that the Ventilating valve is using any one of claim 1-9
The valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820175465.4U CN207975288U (en) | 2018-02-01 | 2018-02-01 | Explosion-wave-preventing Ventilating valve and ventilating system comprising the valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820175465.4U CN207975288U (en) | 2018-02-01 | 2018-02-01 | Explosion-wave-preventing Ventilating valve and ventilating system comprising the valve |
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| Publication Number | Publication Date |
|---|---|
| CN207975288U true CN207975288U (en) | 2018-10-16 |
Family
ID=63766725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820175465.4U Active CN207975288U (en) | 2018-02-01 | 2018-02-01 | Explosion-wave-preventing Ventilating valve and ventilating system comprising the valve |
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| Country | Link |
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| CN (1) | CN207975288U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240493A (en) * | 2018-02-01 | 2018-07-03 | 中国核电工程有限公司 | Explosion-wave-preventing Ventilating valve and the ventilating system comprising the valve |
| CN110159814A (en) * | 2019-06-19 | 2019-08-23 | 江苏爵格工业设备有限公司 | Anti-explosive valve |
-
2018
- 2018-02-01 CN CN201820175465.4U patent/CN207975288U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240493A (en) * | 2018-02-01 | 2018-07-03 | 中国核电工程有限公司 | Explosion-wave-preventing Ventilating valve and the ventilating system comprising the valve |
| CN110159814A (en) * | 2019-06-19 | 2019-08-23 | 江苏爵格工业设备有限公司 | Anti-explosive valve |
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