CN108953694A - Nuclear power check-valves - Google Patents
Nuclear power check-valves Download PDFInfo
- Publication number
- CN108953694A CN108953694A CN201810606409.6A CN201810606409A CN108953694A CN 108953694 A CN108953694 A CN 108953694A CN 201810606409 A CN201810606409 A CN 201810606409A CN 108953694 A CN108953694 A CN 108953694A
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- CN
- China
- Prior art keywords
- hole
- gas outlet
- connecting rod
- auxiliary
- valve
- Prior art date
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Classifications
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
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- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2028—Details of bearings for the axis of rotation
- F16K1/2035—Details of bearings for the axis of rotation the axis of rotation having only one bearing
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- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/20—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
- F16K1/2042—Special features or arrangements of the sealing
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- 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
Abstract
The present invention provides a kind of nuclear power check-valves, including valve body and valve deck, valve deck is connect with valve seal, air inlet and air outlet are provided on valve body, the inside that air inlet extends to valve body forms inlet end, and inlet end is fixedly arranged above bracket, and the position of face inlet end is provided with flap, gasket is provided between flap and inlet end, gasket is fixed on flap；Flap is fixed on valve rod, and valve rod is articulated on support frame, and articulated position is provided with torsional spring；The marginal position of gasket is circumferentially provided with tipper, and the distance between tipper inside to inlet end is provided with angling hole corresponding with tipper greater than the distance between outside to inlet end on flap；The middle position of the one side of gasket and valve flap contacts is provided with arch protrusion, and recess corresponding with conformal protrusion is provided on flap, has gap between arch protrusion and recess.Nuclear power check-valves provided by the invention, increases the leakproofness of nuclear power check-valves.
Description
Technical field
The present invention relates to valve technology fields, more particularly, to a kind of nuclear power check-valves.
Background technique
Nuclear power is referred to check-valves to be flowed and automatic open and close flap by medium itself, for the valve for preventing medium from flowing backwards
Door, also known as non-return valve, check valve, reflux valve and counterbalance valve, nuclear power check-valves, it is relatively high to the seal request of check-valves such as
What improves the leakproofness of nuclear power check-valves, and people are studying always.
Summary of the invention
Therefore, the present invention provides a kind of nuclear power check-valves, to solve the above technical problems.
The technical scheme is that a kind of nuclear power check-valves, including valve body and valve deck, the valve deck and the valve body
It being tightly connected, air inlet and air outlet is provided on the valve body, the inside that the air inlet extends to valve body forms inlet end,
The inlet end is fixedly arranged above bracket, and the position of inlet end described in face is provided with flap, the flap and the air inlet
Gasket is provided between end, the gasket is fixed on the flap；The flap is fixed on the valve rod, the valve
Bar is articulated on support frame as described above, and articulated position is provided with torsional spring；The marginal position of the gasket is circumferentially provided with tipper,
It is greater than outside the distance between to inlet end to the distance between the inlet end on the inside of the tipper, is arranged on the flap
There is angling hole corresponding with the tipper；The middle position of the one side of the gasket and the valve flap contacts is provided with arch
Protrusion is provided with recess corresponding with the conformal protrusion on the flap, between having between the arch protrusion and the recess
Gap.
Optionally, the air inlet and air outlet are flange port.
It optionally, further include auxiliary valve body, the both ends of the auxiliary valve body are provided with the first auxiliary gas outlet and second auxiliary
Gas outlet is helped, is formed between the first auxiliary gas outlet and second auxiliary gas outlet and assists outlet passageway, described first
Auxiliary gas outlet is connect with the gas outlet seal；Anti-backflow structure, the anti-return are fixed in the auxiliary outlet passageway
Structure includes: the blocking body being fixed on auxiliary outlet passageway inner wall, described to stop body close to first auxiliary gas outlet
One end, it is described to stop body that the side of first auxiliary gas outlet is provided with counterbore, it is logical that first is provided in the counterbore
Hole；Spring, the spring are fixed in auxiliary outlet passageway far from one end of first auxiliary gas outlet, and the other end is fixed to be connected
It is connected to movable part, the movable part is passed through from the inside of the spring；The movable part is close to first auxiliary gas outlet
One end is provided with the blocking portion with counterbore cooperation, one end setting close to first auxiliary gas outlet of the blocking portion
There is sealing ring, the closure with through-hole cooperation is provided on the blocking portion, is provided with the first hole, institute on the sealing
The diameter for stating the first hole is gradually become smaller by the side close to the first auxiliary gas outlet to the side far from the first auxiliary gas outlet, institute
The second hole for being provided on movable part and being connected to the first hole is stated, the diameter in second hole is equal to the minimum diameter in the first hole；
Be provided with piston in second hole, be provided with piston rod on the piston, the piston rod not with the piston
One end of connection is pierced by second hole and is fixed in the auxiliary outlet passageway；The piston rod is located in second hole
Partial diameter is less than the diameter of the piston, and is greater than the diameter that the piston rod is located at the part outside second hole；Institute
State the third hole for being provided on movable part and being connected to second hole, the third hole be it is inclined, close to second hole
The distance of side to first auxiliary gas outlet is less than the side far from second hole to first auxiliary gas outlet
Distance.
Optionally, the inlet end is inclined, and the distance at top to air inlet is less than the distance of bottom to air inlet；Institute
It states and is provided with arc-shaped connecting rod on valve rod, the first support shaft is installed in the valve body, be equipped with and turn in first support shaft
Wheel, the runner can be rotated centered on the first support shaft, and the marginal position of the runner is provided with the second support shaft, described
First connecting rod is connected in second support shaft, one end that the arc-shaped connecting rod is not connect with the valve rod passes through the second support shaft
It is hinged with the first connecting rod；Sliding slot is installed in the valve body, sliding block is installed on the sliding slot, is fixed on the sliding block
Second connecting rod, the both ends of the second connecting rod are extended outside the sliding slot, one end and first connecting rod not with second support shaft
One end of connection is hinged, and the other end is hinged with third connecting rod, and one end that the third connecting rod is not connect with the second connecting rod connects
It is connected to arc sealing plate, is wholely set the arc with arc sealing plate cooperation in the valve body close to one end of the gas outlet
Baffle is provided with the venthole being connected to the gas outlet on the curved baffle；The third connecting rod and the second connecting rod
Third support shaft is provided between hinged position and the curved baffle, the third connecting rod and third support axis connection, and
And it can be rotated centered on third support shaft；The third connecting rod is inclined, close to described curved baffle one end height
Greater than the height far from described curved baffle one end.
Optionally, the angle degree between the first connecting rod and second connecting rod is 30-60 °.
Optionally, the tilt angle of the third connecting rod is 25-35 °.
Nuclear power check-valves provided by the invention, when in use, air-flow are flowed into from air inlet, under the pressure effect of air-flow
Flap is opened and is turned over, torsional spring accumulation of energy, air-flow can be by nuclear power check-valves, when stopping gas supply, in the restoring force of torsional spring
Under effect, flap restores original position and seals inlet end, and under the effect of the pressure of flap, the edge of gasket is due to inclining
The presence of skewed slot, deformation is relatively large, therefore marginal position sealing is preferably, and relatively due to the edge deformation of gasket
Greatly, so that arch protrusion is arched upward, the marginal position of gasket is made to be not easy to tilt, to further increase nuclear power with stopping
Return the leakproofness of valve.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of nuclear power check-valves of the invention；
Fig. 2 is enlarged drawing of the Fig. 1 at A；
Fig. 3 is one of structural schematic diagram of auxiliary valve body；
Fig. 4 is the right side view of the blocking portion in Fig. 3；
Fig. 5 is the second structural representation of auxiliary valve body；
Fig. 6 is the third structural representation of auxiliary valve body；
Fig. 7 is the second structural representation of nuclear power check-valves of the invention；
Fig. 8 is the mounting structure schematic diagram of the second sealing.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawing.
Embodiment 1, the present invention provides a kind of nuclear power check-valves, referring to Fig. 1 and Fig. 2, including valve body 11 and valve deck 12,
The valve deck is connect with the valve seal, is typically provided to the form being detachably connected, such as the form being bolted,
It is used in order to repair, naturally it is also possible to weld together, make according to the actual situation, is not specifically limited herein, the valve
Be provided with air inlet 111 and gas outlet 112 on body, the inside that the air inlet extends to valve body forms inlet end 113, it is described into
Gas end is fixedly arranged above bracket 13, and the position of inlet end described in face is provided with flap 14, the flap and the inlet end
Between be provided with gasket 15, the gasket is fixed on the flap；The flap is fixed on the valve rod 16, described
Valve rod is articulated on support frame as described above, and articulated position is provided with torsional spring；The marginal position of the gasket is circumferentially provided with inclination
Slot 17, the general relative level of the tilt angle of tipper is arranged between 25-45 °, to the air inlet on the inside of the tipper
The distance between end is provided with inclination corresponding with the tipper greater than the distance between outside to inlet end on the flap
Hole 18；The middle position of the one side of the gasket and the valve flap contacts is provided with arch protrusion 19, the diameter of arch protrusion
The preferably equal to diameter of air inlet is provided with recess 20 corresponding with the conformal protrusion, the arch protrusion on the flap
There is gap between the recess.
When in use with check-valves, air-flow flows into nuclear power provided by the present application from air inlet, under the pressure effect of air-flow
Flap is opened and is turned over, torsional spring accumulation of energy, air-flow can be by nuclear power check-valves, when stopping gas supply, in the restoring force of torsional spring
Under effect, flap restores original position and seals inlet end, and under the effect of the pressure of flap, the edge of gasket is due to inclining
The presence of skewed slot, deformation is relatively large, therefore marginal position sealing is preferably, and relatively due to the edge deformation of gasket
Greatly, so that arch protrusion is arched upward, the marginal position of gasket is made to be not easy to tilt, to further increase nuclear power with stopping
Return the leakproofness of valve.
As preferred mode, the air inlet and air outlet are flange port.
Embodiment 2, in order to further enhance the sealing performance of nuclear power check-valves, on the basis of embodiment 1, applicant
Following design is also done, referring to Fig. 3 and Fig. 4, which further includes auxiliary valve body 21, the both ends of the auxiliary valve body
It is provided with the first auxiliary gas outlet 211 and the second auxiliary gas outlet 212, first auxiliary gas outlet and described second assists out
Auxiliary outlet passageway is formed between port, first auxiliary gas outlet is connect with the gas outlet seal；The auxiliary outlet
Anti-backflow structure is fixed in channel, the Anti-backflow structure includes: the blocking body 22 being fixed on auxiliary outlet passageway inner wall,
Described one end for stopping body close to first auxiliary gas outlet, it is described to stop side of the body far from first auxiliary gas outlet
It is provided with counterbore 221, first through hole 222 is provided in the counterbore；Spring 23, the spring is far from the first auxiliary outlet
One end of mouth is fixed in auxiliary outlet passageway, general to be fixed on auxiliary outlet passageway inner wall by fixing piece, for example is passed through
Metal block or metallic rod etc. are welded on auxiliary outlet passageway inner wall, and the other end is fixedly connected with movable part 24, the movable part
It is passed through from the inside of the spring；The movable part is provided with close to one end of first auxiliary gas outlet matches with the counterbore
The blocking portion 241 of conjunction, the blocking portion close to it is described first auxiliary gas outlet one end be provided with sealing ring, generally with blocking
Portion is fixed, for example is bonded or is embedded on blocking portion, naturally it is also possible to is set to the bottom surface of counterbore, is provided on the blocking portion
With the closure 242 of through-hole cooperation, the first hole 243 is provided on the sealing, the diameter in first hole is by close
The side of first auxiliary gas outlet to the side far from the first auxiliary gas outlet gradually becomes smaller, and is provided on the movable part and the
Second hole 244 of one hole connection, the diameter in second hole are equal to the minimum diameter in the first hole；Work is provided in second hole
245 are filled in, is provided with piston rod 246 on the piston, one end that the piston rod is not connect with the piston is pierced by described second
Hole is fixed in the auxiliary outlet passageway, general to be fixed on auxiliary outlet passageway inner wall by fixing piece, for example passes through gold
Belong to block or metallic rod etc. to be welded on auxiliary outlet passageway inner wall；The piston rod is located at the diameter of the part in second hole
It is slightly less than the diameter of the piston, and is greater than the diameter that the piston rod is located at the part outside second hole, in order to supports
It piston and is not contacted with third hole；The third hole 247 being connected to second hole, the third are provided on the movable part
Hole be it is inclined, the distance close to side to first auxiliary gas outlet in second hole is less than far from second hole
The distance of side to first auxiliary gas outlet.
It should be noted that form as shown in Figure 5 or Figure 6 also can be set into above-mentioned second hole, especially by piston
When one end setting of bar not connecting with piston is between piston and the first auxiliary gas outlet, back draught is more difficult to pass through work
Plug.
When in use, the air-flow for flowing through gas outlet enters in auxiliary valve body the structure through the first auxiliary gas outlet, in air-flow
Spring contraction drives movable part to move to right under the action of pressure, and first through hole is exposed, and piston exposes the first hole, and fraction is logical
It crosses space of the first through hole between spring and movable part to flow through, another part enters the second hole through the first hole and flows through third hole
It crosses, the first hole is arranged to diameter and is gradually become by the side close to the first auxiliary gas outlet to the side far from the first auxiliary gas outlet
It is small first is that retracted in order to facilitate piston, second is that air-flow is facilitated to enter the second hole along the first hole from piston surrounding, when stopping gas supply,
Spring reset, piston seal the second hole, since piston rod is fixed, so if there is the air-flow of reverse flow to enter third
It not will drive piston motion when hole, also, under the action of the spring, blocking portion and the cooperation of blocking body will auxiliary outlet passageway envelopes
Firmly.The structure cooperates 1 structure of embodiment, back draught can be stopped layer by layer, air-tightness is more preferable, and flows through in positive draft
When as far as possible increase gas flow area.
Embodiment 3, in order to further enhance the sealing performance of nuclear power check-valves, on the basis of embodiment 1, applicant
Also done following design, referring to Fig. 7, the inlet end be it is inclined, tilt angle is generally at 15-30 °, top to air inlet
Distance is less than the distance of bottom to air inlet；It is provided with arc-shaped connecting rod 25 on the valve rod, is equipped with first in the valve body
Support shaft 26 is equipped with runner 27 in first support shaft, and the runner can be rotated centered on the first support shaft, can be with
By installing bearing in the first support shaft, runner is fixed on bearing, the bore dia of roller centre can also be set to
It is more bigger than the first bearing shaft diameter, it is arranged in the first support shaft and stops to prevent runner the first support shaft of disengaging, described turn
The marginal position of wheel is provided with the second support shaft 28, and first connecting rod 29, the arc connection are connected in second support shaft
One end that bar is not connect with the valve rod is hinged by the second support shaft and the first connecting rod, can be by the second support shaft
Two bearings of upper installation, arc-shaped connecting rod and first connecting rod are individually fixed on two bearings, arc can also be connected
The bore dia that bar and first connecting rod cover in the second support shaft is set as more bigger than the second bearing shaft diameter, at second
Setting on axis is held to stop that arc-shaped connecting rod and first connecting rod is prevented to be detached from the second support shaft；Sliding slot is installed in the valve body
30, sliding slot is preferably vertically arranged, and sliding block 31 is equipped on the sliding slot, is fixed with second connecting rod 32 on the sliding block, and described
The both ends of two connecting rods are extended outside the sliding slot, and one end is hinged not with one end of the second support axis connection with first connecting rod,
The other end is hinged with third connecting rod 33, and the angle between first connecting rod and second connecting rod is preferably between 30-60 °, the third
One end that connecting rod is not connect with the second connecting rod is connected with arc sealing plate 34, one end of the close gas outlet in the valve body
It is wholely set the curved baffle 35 with arc sealing plate cooperation, is provided on the curved baffle and is connected to the gas outlet
Venthole 36；Third branch is provided between the third connecting rod and the hinged position of the second connecting rod and the curved baffle
Hold axis 37, the third connecting rod and third support axis connection, and can be rotated centered on third support shaft, can by
Bearing is installed in third support shaft, a three-link is fixed on bearing, the bore dia at third connecting rod center can also be arranged
To support than third, shaft diameter is more bigger, and setting stops that third connecting rod is prevented to be detached from third support shaft in third support shaft；
The third connecting rod be it is inclined, the tilt angle of relative level generally may be provided between 25-35 °, close to the arc
The height of baffle one end is greater than the height far from described curved baffle one end.
Referring to Fig. 7, this structure is able to drive arc-shaped connecting rod and pushes the runner inverse time when flap is opened and turned over
The movement of needle direction, and then drive first connecting rod that second connecting rod is pushed to move up in direction along the chute, third connecting rod is suitable along third support shaft
Clockwise rotation, moves down arc sealing plate arcuately on the inside of baffle, and air-flow can circulate along venthole through gas outlet, when stopping
When only supplying, spring reset, while piston seals the second hole, arc sealing plate resets, and venthole is blocked, even if having reversed
Air-flow is blocked by arc sealing plate for the first time first, even if there is minute quantity back draught by arc sealing plate, flowing velocity and pressure
Power is not easy the sealing by flap again to greatly reduce, in addition, pressure of the back draught at arc sealing plate makes arc
Sealing plate compresses third connecting rod, and then pressure is passed to valve rod by second connecting rod, first connecting rod and arc-shaped connecting rod, compresses
Flap makes gasket better tightness.
It should be noted that be also possible to support vertical for inlet end in Fig. 7, only slightly poor the one of effect relative tilt
Point, embodiment 2 and embodiment 3 also may be combined to form new scheme.
Referring to Fig. 8, in the application, the second sealing a can also be set in the inside of inlet end, be set on the inside of the second sealing
It is equipped with venthole b, the edge of venthole includes the first edge c and second edge d being wholely set, and first edge is located at venthole
Inside, second edge is located at the outside of venthole, and first edge protrudes the second edge and second edge forms step, with
Gasket offsets, what second edge was integrated with valve body.This structure, after flap reset, gasket is sealing sealed end
First edge is sealed simultaneously, forms two layers of sealing, sealing effect is more preferable, furthermore due to step between sealed end and first edge
In the presence of therefore there is space, gasket deformation can be want to seal by two layers in right side edge position filling part space, reversed gas,
Must turn round could pass through into the space space of turning round out again, therefore, increase and improve the sealing of nuclear power check-valves
Property.
Above-described embodiment is the illustration invented, and it is special should not to describe limitation with the exemplary embodiments of specification and attached drawing
The protection scope of economic rights.
The preferred embodiments of the disclosure and embodiment are explained in detail above in conjunction with attached drawing, but it is of the invention
It is not limited to the above embodiment and embodiment can also not take off within the knowledge of those skilled in the art
Various changes can be made under the premise of from present inventive concept.In the claims, any reference between parentheses should not be accorded with
Number be used as limitations on claims.Word "comprising" does not exclude the presence of element or step not listed in the claims.Word
First, second and the use of third etc. do not indicate any sequence, these words can be construed to title.
Claims (6)
1. a kind of nuclear power check-valves, which is characterized in that including valve body (11) and valve deck (12), the valve deck and the valve body are close
Envelope connects, and is provided with air inlet (111) and gas outlet (112) on the valve body, the air inlet extends to the inside shape of valve body
At inlet end (113),
The inlet end is fixedly arranged above bracket (13), and the position of inlet end described in face is provided with flap (14), the valve
Gasket (15) are provided between valve and the inlet end, the gasket is fixed on the flap；
The flap is fixed on the valve rod (16), and the valve rod is articulated on support frame as described above, and articulated position is provided with torsion
Spring；
The marginal position of the gasket is circumferentially provided with tipper (17), between the inlet end on the inside of the tipper
Distance is provided with angling hole (18) corresponding with the tipper greater than the distance between outside to inlet end on the flap；
The middle position of the one side of the gasket and the valve flap contacts is provided with arch protrusion (19), is arranged on the flap
There is recess (20) corresponding with the conformal protrusion, has gap between the arch protrusion and the recess.
2. nuclear power check-valves according to claim 1, which is characterized in that the air inlet and air outlet are flange port.
3. nuclear power check-valves according to claim 1 or 2, which is characterized in that it further include auxiliary valve body (21), it is described auxiliary
The both ends of valve body are helped to be provided with the first auxiliary gas outlet (211) and the second auxiliary gas outlet (212), first auxiliary gas outlet
Auxiliary outlet passageway is formed between second auxiliary gas outlet, the first auxiliary gas outlet and the gas outlet seal connect
It connects；
Anti-backflow structure is fixed in the auxiliary outlet passageway, the Anti-backflow structure includes:
The blocking body (22) being fixed on auxiliary outlet passageway inner wall, it is described to stop body close to the one of first auxiliary gas outlet
End, it is described that body is stopped to be provided with counterbore (221) far from the side of first auxiliary gas outlet, first is provided in the counterbore
Through-hole (222)；
Spring (23), the spring are fixed in auxiliary outlet passageway far from one end of first auxiliary gas outlet, the other end
Movable part (24) are fixedly connected with, the movable part is passed through from the inside of the spring；
The movable part is provided with the blocking portion (241) with counterbore cooperation close to one end of first auxiliary gas outlet,
The blocking portion close to it is described first auxiliary gas outlet one end be provided with sealing ring, be provided on the blocking portion with it is described
The closure (242) of through-hole cooperation, is provided with the first hole (243) on the sealing, and the diameter in first hole is by close to the
The side of one auxiliary gas outlet to the side far from the first auxiliary gas outlet gradually becomes smaller, and is provided on the movable part and first
The second hole (244) of hole connection, the diameter in second hole are equal to the minimum diameter in the first hole；
Be provided with piston (245), be provided on the piston piston rod (246) in second hole, the piston rod not with institute
The one end for stating piston connection is pierced by second hole and is fixed in the auxiliary outlet passageway；
The diameter that the piston rod is located at the part in second hole is less than the diameter of the piston, and is greater than the piston rod
The diameter of part outside second hole；
The third hole (247) being connected to second hole is provided on the movable part, the third hole is inclined, close institute
The distance for stating the side in the second hole to first auxiliary gas outlet is less than the side far from second hole to described first auxiliary
Help the distance of gas outlet.
4. nuclear power check-valves according to claim 1 or 2, which is characterized in that the inlet end be it is inclined, top is extremely
The distance of air inlet is less than the distance of bottom to air inlet；
It is provided with arc-shaped connecting rod (25), is equipped in the valve body the first support shaft (26) on the valve rod, described first
It holds and is equipped on axis runner (27), the runner can be rotated centered on the first support shaft, and the margin location of the runner installs
Be equipped with the second support shaft (28), be connected in second support shaft first connecting rod (29), the arc-shaped connecting rod not with it is described
One end of valve rod connection is hinged by the second support shaft and the first connecting rod；
It is equipped with sliding slot (30), is equipped on the sliding slot sliding block (31) in the valve body, be fixed with the second company on the sliding block
Bar (32), the both ends of the second connecting rod are extended outside the sliding slot, and one end and first connecting rod do not connect with second support shaft
The one end connect is hinged, and the other end is hinged with third connecting rod (33), one end that the third connecting rod is not connect with the second connecting rod
It is connected with arc sealing plate (34), one end in the valve body close to the gas outlet has been wholely set to be cooperated with the arc sealing plate
Curved baffle (35), be provided with the venthole (36) being connected to the gas outlet on the curved baffle；
Third support shaft is provided between the third connecting rod and the hinged position of the second connecting rod and the curved baffle
(37), the third connecting rod and third support axis connection, and can be rotated centered on third support shaft；
The third connecting rod be it is inclined, the height close to described curved baffle one end is greater than far from described curved baffle one end
Highly.
5. nuclear power check-valves according to claim 4, which is characterized in that between the first connecting rod and second connecting rod
Angle degree is 30-60 °.
6. nuclear power check-valves according to claim 4, which is characterized in that the tilt angle of the third connecting rod is 25-
35°。
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| CN201810606409.6A CN108953694B (en) | 2018-06-13 | 2018-06-13 | Nuclear power check-valves |
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| CN201810606409.6A CN108953694B (en) | 2018-06-13 | 2018-06-13 | Nuclear power check-valves |
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| CN108953694A true CN108953694A (en) | 2018-12-07 |
| CN108953694B CN108953694B (en) | 2019-04-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379882A (en) * | 2018-12-28 | 2020-07-07 | 任荣均 | Check valve structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552174A (en) * | 1984-09-28 | 1985-11-12 | Itt Corporation | Spring-loaded check valve |
| EP2639481A2 (en) * | 2012-03-12 | 2013-09-18 | Hayward Industries, Inc. | Wafer check valve assembly and related methods of use |
| US20140150893A1 (en) * | 2012-12-04 | 2014-06-05 | Douglas Hunter Powell | Shutoff valve in backflow prevention device |
| CN205504094U (en) * | 2016-04-12 | 2016-08-24 | 温州市开诚机械有限公司 | Superhigh pressure check valve steel -casting |
| CN206904306U (en) * | 2017-06-08 | 2018-01-19 | 江苏圣泰阀门有限公司 | A kind of swing type low temperature check-valves |
-
2018
- 2018-06-13 CN CN201810606409.6A patent/CN108953694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4552174A (en) * | 1984-09-28 | 1985-11-12 | Itt Corporation | Spring-loaded check valve |
| EP2639481A2 (en) * | 2012-03-12 | 2013-09-18 | Hayward Industries, Inc. | Wafer check valve assembly and related methods of use |
| US20140150893A1 (en) * | 2012-12-04 | 2014-06-05 | Douglas Hunter Powell | Shutoff valve in backflow prevention device |
| CN205504094U (en) * | 2016-04-12 | 2016-08-24 | 温州市开诚机械有限公司 | Superhigh pressure check valve steel -casting |
| CN206904306U (en) * | 2017-06-08 | 2018-01-19 | 江苏圣泰阀门有限公司 | A kind of swing type low temperature check-valves |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379882A (en) * | 2018-12-28 | 2020-07-07 | 任荣均 | Check valve structure |
| CN111379882B (en) * | 2018-12-28 | 2022-03-18 | 西马智能科技股份有限公司 | Check valve structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108953694B (en) | 2019-04-23 |
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