CN208778735U - Power station sluice valve - Google Patents
Power station sluice valve Download PDFInfo
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- CN208778735U CN208778735U CN201821503433.9U CN201821503433U CN208778735U CN 208778735 U CN208778735 U CN 208778735U CN 201821503433 U CN201821503433 U CN 201821503433U CN 208778735 U CN208778735 U CN 208778735U
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Abstract
The utility model provides a kind of power station sluice valve.The power station sluice valve includes stuffing box, sealing ring, gasket ring and four cyclizations, valve body middle chamber, stuffing box, sealing ring, gasket ring and four cyclizations be collectively formed prevent the medium in power station sluice valve from revealing without valve cover pressure self-sealing structure, sealing ring is equipped with first annular slot, first annular slot is semicircle along the cross sectional shape of plane where the axis of sealing ring, semicircular diameter is overlapped with the inner wall of valve body, the distance of the lower end surface of semicircular distance of center circle sealing ring is the 1/4~1/3 of the thickness of sealing ring, power station sluice valve is additionally provided with pressing plate, pressing plate has boss structure, boss structure is matched with valve body, pressing plate is fastenedly connected with valve body, pressing plate is fastenedly connected with stuffing box.The power station sluice valve, required pretightning force is smaller, morphotropism more preferably, under relatively small pressure, also may be implemented more preferably leakproofness effect, and structure more consolidate it is firm.
Description
Technical field
The utility model relates to a kind of power station sluice valves.
Background technique
Power station sluice valve, medium temperature -29~650 DEG C, pressure PN1.6~60MPa, 15~500mm of inside nominal diameter make extensively
With on the industrial pipelines such as electric power, petrochemical industry, metallurgy.It, generally can be using pressure certainly due to the particularity of high temperature and high pressure condition
Sealing structure.The core technology of this structure includes the sealing ring being arranged between valve body and stuffing box, gasket ring and four cyclizations etc.
Component.When valve inner is there are when pressure, medium pushes stuffing box to move up, and sealing ring is squeezed, by the elastic-plastic deformation of sealing ring
Realize sealing.Pressure is higher, and sealing effect is better.So sealing ring is the critical component of entire valve, its performance quality is determined
Whether determined whole deck valve door can normal use.
Existing sealing ring mainly uses metal and nonmetallic two major classes material to make, the more nonmetallic sealing of metal o-ring
The service life is longer for circle, and performance is more stable, generally uses in all kinds of import power station valves.So developing makes with longer
Metal o-ring power station valve with service life and higher sealing performance is a much progress of the prior art.
However, power station sluice valve still has that pretightning force is big, morphotropism is bad in the prior art, and then lead to leakproofness effect
Defect that is bad, being easy leakage.
Utility model content
Technical problem to be solved in the utility model is for there are the pretightning forces big, deformation of power station sluice valve in the prior art
Property it is bad, and then lead to that leakproofness effect is bad, is easy the defect of leakage, and provide a kind of novel power station sluice valve.This is practical
Novel power station sluice valve, required pretightning force is smaller, morphotropism more preferably, under relatively small pressure, also may be implemented more excellent
Leakproofness effect, and structure more consolidate it is firm.
The utility model solves above-mentioned technical problem by the following technical programs:
The utility model provides a kind of power station sluice valve, and the power station sluice valve has valve body, and the valve body has valve body middle chamber,
For the valve body middle chamber using no valve cover pressure self-sealing structure, the no valve cover pressure self-sealing structure includes stuffing box, sealing
Circle, gasket ring and four cyclizations, the sealing ring are set between the stuffing box and the valve body, the sealing ring and the valve body
Inner wall fits, and the gasket ring is located at the top of the sealing ring, and four cyclization is located at the top of the gasket ring, the valve body
Boss for blocking four cyclization and the sealing ring prevented to move upwards when being squeezed, it is the valve body middle chamber, described
Stuffing box, the sealing ring, the gasket ring and four cyclization, which are collectively formed, prevents the leakage of the medium in the power station sluice valve
The no valve cover pressure self-sealing structure, the sealing ring are equipped with first annular slot, and the first annular slot is along the sealing
The cross sectional shape of plane is semicircle where the axis of circle, and the semicircular diameter is overlapped with the inner wall of the valve body, described
The distance of the lower end surface of sealing ring described in semicircular distance of center circle is the 1/4~1/3 of the thickness of the sealing ring, the power station lock
Valve is additionally provided with pressing plate, and the pressing plate has boss structure, and the boss structure is matched with the valve body, the pressing plate with it is described
Valve body is fastenedly connected, and the pressing plate is fastenedly connected with the stuffing box.
Compared with power station sluice valve in the prior art, pretightning force needed for above-mentioned power station sluice valve is smaller, morphotropism more preferably,
Under relatively small pressure, also may be implemented more preferably leakproofness effect, and structure more consolidate it is firm.
In the utility model, preferably, it is additionally provided with the second annular groove above the first annular slot on the sealing ring,
The structure of second annular groove is identical as the first annular slot, and described in the semicircular distance of center circle of second annular groove
The distance in the semicircular center of circle of first annular slot is the 1/3 of the thickness of the sealing ring.More preferably, the inner wall of the valve body exists
It fits with second annular groove and locates pile-up welding hard alloy, such as can built-up welding D507Mo.Above-mentioned technical proposal can be realized more
Excellent sealing effect.
In the utility model, preferably, the sealing ring is metal mild steel sealing ring, the sealing ring and the stuffing box
For line contact.More preferably, the angle formed between the inner wall of the sealing ring and the outside wall surface of the stuffing box is 2~3 degree.
Above-mentioned technical proposal can be realized more preferably sealing effect.
In the utility model, the inner wall of the valve body locates pile-up welding hard alloy fitting with the first annular slot, example
It such as can built-up welding D507Mo.Above-mentioned technical proposal can increase the wearability of the sealing ring, prevent the sealing ring from abrading.
In the utility model, preferably, being fastenedly connected as stud and nut between the pressing plate and the stuffing box
It is cooperatively connected.Above-mentioned technical proposal can provide one prefastening load for the sealing ring, guarantee the first of the valve body middle chamber
Begin to seal.
In the utility model, preferably, the bottom that the stuffing box is used to accommodate the filler chamber of filler is equipped with Packing seat, institute
It states and is successively arranged first lap woollen yarn knitting carbon packing ring, flexible graphite packing ring and second in filler chamber above the Packing seat
Circle woollen yarn knitting carbon packing ring.Above-mentioned technical proposal convenient for the transmitting of power, guarantees filler uniform force, guarantees valve when pressing filler
Medium does not leak outside at bar, is greatly improved the sealing performance of filler.
In the utility model, preferably, pressing sleeve and gland are additionally provided with above the filler chamber of the stuffing box, the pressing sleeve
For pushing down the filler in the stuffing box, it is fastenedly connected between the gland and the stuffing box, it is described to be fastenedly connected as spiral shell
The mating connection of column and nut.
In the utility model, preferably, being provided on the flashboard of the power station sluice valve and the guiding rib phase on the valve body
The guide groove of cooperation, the cooperation of the guiding rib and the guide groove, and then can be significantly so that the flashboard only moves up and down
Reduce the abrasion to filler.
In the utility model, preferably, the valve seat of the power station sluice valve is the symmetrical structure with boss structure, processing side
Just, the boss structure is matched with the valve body.The valve seat scheme of above structure is right when above-mentioned valve seat and valve body weld
The influence of sealing surface of seat is small, so that the deformation of valve seat is small, while being more advantageous to the sealing of valve seat.
In the utility model, preferably, the flashboard of the power station sluice valve is elastic wedge-type flashboard.Equipped with the elastic wedge-type
The power station sluice valve of flashboard can compensate mismachining tolerance automatically, adapt to worst hot case, avoid killing.
More preferably, the angle of wedge of the valve seat orifice of the valve body and the elastic wedge-type flashboard is 5 degree.
More preferably, built-up welding cobalt-based on the sealing surface formed between the valve seat of the power station sluice valve and the elastic wedge-type flashboard
Hard alloy Stellite 6.Above-mentioned technical proposal can be further improved the high temperature resistance of the sealing surface, fatigue performance,
Corrosion resistance.
Further more preferably, the machining accuracy of the sealing surface is Ra≤0.8 μm.The technical solution, can be effectively reduced
Amount of leakage at the sealing surface, and the coefficient of friction at the sealing surface is effectively reduced.
Further more preferably, the hardness of the valve seat is 3~5HRC higher than the hardness of the elastic wedge-type flashboard.Above-mentioned technology
Scheme can pull open the difference of hardness of sealing surface, avoid valve seat and elastic wedge-type flashboard from killing, greatly prolong the use of power station sluice valve
Service life.
In the utility model, preferably, back seal mechanism is additionally provided on the stuffing box, on the valve rod of the power station sluice valve
It is additionally provided with oblique shoulder face, the oblique shoulder face can form with the back seal mechanism and seal.When the power station sluice valve is in open shape
When state, the valve rod is upwardly at the back seal mechanism, and the oblique shoulder face and the back seal mechanism are formed and sealed, in this way,
In filler failure, filler can be replaced online under operation, maintenance down bring is effectively avoided to lose.
In the utility model, preferably, the power station sluice valve is additionally provided with electric device, the electric device is for going up and down institute
State the valve rod and then opening/shutting valve of power station sluice valve.More preferably, the power station sluice valve is additionally provided with bracket, and the bracket is used to support institute
Electric device is stated, is fastenedly connected between the bracket and the valve body, be may be, for example, and be bolted.
The positive effect of the utility model is: by specific position set specific structure, then cooperate it is special
The structure and pressing plate of pressing plate and the connection relationship of stuffing box so that the power station sluice valve of the utility model with it is in the prior art
Power station sluice valve is compared, required pretightning force is smaller, morphotropism more preferably, under relatively small pressure, also may be implemented more preferably
Leakproofness effect, and structure more consolidate it is firm.
Detailed description of the invention
The schematic diagram of the section structure of the Fig. 1 for the power station sluice valve of the utility model embodiment 1 and embodiment 2 when closed；
The schematic diagram of the section structure of the Fig. 2 for the power station sluice valve of the utility model embodiment 1 and embodiment 2 when opening；
Fig. 3 is the partial enlarged view in Fig. 1 at sealing ring.
Description of symbols:
Valve body 1
Valve seat 2
Flashboard 3
Valve rod 4
Stuffing box 5
Sealing ring 6
Gasket ring 7
Four cyclizations 8
Pressing plate 9
Packing seat 10
First lap knits carbon packing ring 11
Flexible graphite packing ring 12
Second circle woollen yarn knitting carbon packing ring 13
Bracket 14
Pressing sleeve 15
Gland 16
Electric device 17
First annular slot 18
Specific embodiment
The utility model is further illustrated below by the mode of embodiment, but is not therefore limited in the utility model
Among the embodiment described range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions,
Or it is selected according to product manual.
Embodiment 1
Power station sluice valve as shown in Figs. 1-3, power station sluice valve have valve body 1, and valve body 1 has valve body middle chamber, and valve body middle chamber is adopted
With no valve cover pressure self-sealing structure, no valve cover pressure self-sealing structure includes stuffing box 5, sealing ring 6, gasket ring 7 and four cyclizations
8, sealing ring 6 is set between stuffing box 5 and valve body 1, and sealing ring 6 and the inner wall of valve body 1 fit, and gasket ring 7 is located at sealing ring 6
Top, four cyclizations 8 are located at the top of gasket ring 7, and the boss of valve body 1 is for when blocking four cyclizations 8 and sealing ring 6 being prevented to be squeezed
It moves upwards, the medium prevented in power station sluice valve is collectively formed in valve body middle chamber, stuffing box 5, sealing ring 6, gasket ring 7 and four cyclizations 8
Leakage without valve cover pressure self-sealing structure, sealing ring 6 is equipped with first annular slot 18, and first annular slot 18 is along sealing ring 6
The cross sectional shape of plane is semicircle where axis, and semicircular diameter is overlapped with the inner wall of valve body 1, and semicircular distance of center circle is close
The distance of the lower end surface of seal 6 is the 1/3 of the thickness of sealing ring 6, and power station sluice valve is additionally provided with pressing plate 9, and pressing plate 9 has boss knot
Structure, boss structure are matched with valve body 1, and pressing plate 9 is fastenedly connected with valve body 1, and pressing plate 9 is fastenedly connected with stuffing box 5.
Wherein, sealing ring 6 is metal mild steel sealing ring, and sealing ring 6 is contacted with stuffing box 5 for line, the inner wall of sealing ring 6
The angle formed between the outside wall surface of stuffing box 5 is 2 degree.It so, it is possible to realize more preferably sealing effect.
Wherein, the inner wall of valve body 1 fit with first annular slot 18 locate pile-up welding hard alloy be built-up welding D507Mo.Such as
This, can increase the wearability of sealing ring 6, prevent sealing ring 6 from abrading.
Wherein, the mating connection being fastenedly connected as stud and nut between pressing plate 9 and stuffing box 5.It so, it is possible to be close
Seal 6 provides one prefastening load, guarantees the initial sealing of valve body middle chamber.
Wherein, the bottom that stuffing box 5 is used to accommodate the filler chamber of filler is equipped with Packing seat 10, in Packing seat 10 in filler chamber
Top be successively arranged first lap woollen yarn knitting carbon packing ring 11, flexible graphite packing ring 12 and second circle woollen yarn knitting carbon packing ring
13.In this way, convenient for the transmitting of power, guaranteeing filler uniform force when pressing filler, guarantee that medium does not leak outside at valve rod, it can be significantly
Improve the sealing performance of filler.
Wherein, pressing sleeve 15 and gland 16 are additionally provided with above filler chamber, pressing sleeve 15 is used to push down the filler in stuffing box 5,
It is fastenedly connected between gland 16 and stuffing box 5, is fastenedly connected the mating connection for stud and nut.
Wherein, be provided with the guide groove matched with the guiding rib on valve body 1 on the flashboard 3 of power station sluice valve, guiding rib with
The cooperation of guide groove is so that flashboard 3 only moves up and down.In this way, the abrasion to filler can be greatly reduced.
Wherein, the valve seat 2 of power station sluice valve is the symmetrical structure with boss structure, and boss structure is matched with valve body 1.Such as
This, when above-mentioned valve seat 2 is welded with valve body 1, the influence to 2 sealing surface of valve seat is small, so that the deformation of valve seat 2 is small, simultaneously
It is more advantageous to the sealing of valve seat 2.
Wherein, the flashboard 3 of power station sluice valve is elastic wedge-type flashboard.It so, it is possible to compensate mismachining tolerance automatically, adapt to high temperature
Operating condition avoids killing.
Wherein, the angle of wedge of the valve seat orifice of valve body 1 and elastic wedge-type flashboard is 5 degree.
Wherein, pile-up welding hard alloy on the sealing surface formed between the valve seat 2 of power station sluice valve and elastic wedge-type flashboard
Stellite 6.In this way, can be further improved the high temperature resistance of the sealing surface, fatigue performance, corrosion resistance.
Wherein, the machining accuracy of the sealing surface formed between the valve seat 2 of power station sluice valve and elastic wedge-type flashboard is Ra≤0.8
μm.In this way, amount of leakage at the sealing surface can be effectively reduced, and the coefficient of friction at the sealing surface is effectively reduced.
Wherein, the hardness of valve seat 2 is 3HRC higher than the hardness of elastic wedge-type flashboard.In this way, the hardness of sealing surface can be pulled open
Difference avoids valve seat 2 and elastic wedge-type flashboard from killing, greatly prolongs the service life of power station sluice valve.
Wherein, it is additionally provided with back seal mechanism on stuffing box 5, oblique shoulder face, oblique shoulder face energy are additionally provided on the valve rod 4 of power station sluice valve
Enough and back seal mechanism, which is formed, to be sealed.When power station sluice valve in the open state, valve rod 4 is upwardly at back seal mechanism, oblique shoulder
Face and back seal mechanism, which are formed, to be sealed, in this way, can replace filler online under operation in filler failure, effectively keep away
Exempt from the loss of maintenance down bring.
Wherein, power station sluice valve is additionally provided with electric device 17, and electric device 17 is used to go up and down the valve rod 4 of power station sluice valve and then opens
Valve closing door, power station sluice valve are additionally provided with bracket 14, and bracket 14 is used to support electric device 17, the company of fastening between bracket 14 and valve body 1
It connects, and to be bolted.
Embodiment 2
Power station sluice valve as shown in Figs. 1-3, power station sluice valve have valve body 1, and valve body 1 has valve body middle chamber, and valve body middle chamber is adopted
With no valve cover pressure self-sealing structure, no valve cover pressure self-sealing structure includes stuffing box 5, sealing ring 6, gasket ring 7 and four cyclizations
8, sealing ring 6 is set between stuffing box 5 and valve body 1, and sealing ring 6 and the inner wall of valve body 1 fit, and gasket ring 7 is located at sealing ring 6
Top, four cyclizations 8 are located at the top of gasket ring 7, and the boss of valve body 1 is for when blocking four cyclizations 8 and sealing ring 6 being prevented to be squeezed
It moves upwards, the medium prevented in power station sluice valve is collectively formed in valve body middle chamber, stuffing box 5, sealing ring 6, gasket ring 7 and four cyclizations 8
Leakage without valve cover pressure self-sealing structure, sealing ring 6 is equipped with first annular slot 18, and first annular slot 18 is along sealing ring 6
The cross sectional shape of plane is semicircle where axis, and semicircular diameter is overlapped with the inner wall of valve body 1, and semicircular distance of center circle is close
The distance of the lower end surface of seal 6 is the 1/4 of the thickness of sealing ring 6, and power station sluice valve is additionally provided with pressing plate 9, and pressing plate 9 has boss knot
Structure, boss structure are matched with valve body 1, and pressing plate 9 is fastenedly connected with valve body 1, and pressing plate 9 is fastenedly connected with stuffing box 5.
Wherein, the top of first annular slot 18 is additionally provided with the second annular groove (not marking in figure) on sealing ring 6, the second annular
The structure of slot is identical as first annular slot 18, and the first annular slot 18 of semicircular distance of center circle of the second annular groove is semicircular
The distance in the center of circle is the 1/3 of 6 thickness of sealing ring.It so, it is possible to realize more preferably sealing effect.
Wherein, sealing ring 6 is metal mild steel sealing ring, and sealing ring 6 is contacted with stuffing box 5 for line, the inner wall of sealing ring 6
The angle formed between the outside wall surface of stuffing box 5 is 3 degree.It so, it is possible to realize more preferably sealing effect.
Wherein, the inner wall of valve body 1 fit with first annular slot 18 and the second annular groove locate pile-up welding hard alloy be heap
Weld D507Mo.The wearability that so, it is possible increase sealing ring 6 prevents sealing ring 6 from abrading.
Wherein, the mating connection being fastenedly connected as stud and nut between pressing plate 9 and stuffing box 5.It so, it is possible to be close
Seal 6 provides one prefastening load, guarantees the initial sealing of valve body middle chamber.
Wherein, the bottom that stuffing box 5 is used to accommodate the filler chamber of filler is equipped with Packing seat 10, in Packing seat 10 in filler chamber
Top be successively arranged first lap woollen yarn knitting carbon packing ring 11, flexible graphite packing ring 12 and second circle woollen yarn knitting carbon packing ring
13.In this way, convenient for the transmitting of power, guaranteeing filler uniform force when pressing filler, guarantee that medium does not leak outside at valve rod, it can be significantly
Improve the sealing performance of filler.
Wherein, pressing sleeve 15 and gland 16 are additionally provided with above filler chamber, pressing sleeve 15 is used to push down the filler in stuffing box 5,
It is fastenedly connected between gland 16 and stuffing box 5, is fastenedly connected the mating connection for stud and nut.
Wherein, be provided with the guide groove matched with the guiding rib on valve body 1 on the flashboard 3 of power station sluice valve, guiding rib with
The cooperation of guide groove is so that flashboard 3 only moves up and down.In this way, the abrasion to filler can be greatly reduced.
Wherein, the valve seat 2 of power station sluice valve is the symmetrical structure with boss structure, and boss structure is matched with valve body 1.Such as
This, when above-mentioned valve seat 2 is welded with valve body 1, the influence to 2 sealing surface of valve seat is small, so that the deformation of valve seat 2 is small, simultaneously
It is more advantageous to the sealing of valve seat 2.
Wherein, the flashboard 3 of power station sluice valve is elastic wedge-type flashboard.It so, it is possible to compensate mismachining tolerance automatically, adapt to high temperature
Operating condition avoids killing.
Wherein, the angle of wedge of the valve seat orifice of valve body 1 and elastic wedge-type flashboard is 5 degree.
Wherein, pile-up welding hard alloy on the sealing surface formed between the valve seat 2 of power station sluice valve and elastic wedge-type flashboard
Stellite 6.In this way, can be further improved the high temperature resistance of the sealing surface, fatigue performance, corrosion resistance.
Wherein, the machining accuracy of the sealing surface formed between the valve seat 2 of power station sluice valve and elastic wedge-type flashboard is Ra≤0.8
μm.In this way, amount of leakage at the sealing surface can be effectively reduced, and the coefficient of friction at the sealing surface is effectively reduced.
Wherein, the hardness of valve seat 2 is 5HRC higher than the hardness of elastic wedge-type flashboard.In this way, the hardness of sealing surface can be pulled open
Difference avoids valve seat 2 and elastic wedge-type flashboard from killing, greatly prolongs the service life of power station sluice valve.
Wherein, it is additionally provided with back seal mechanism on stuffing box 5, oblique shoulder face, oblique shoulder face energy are additionally provided on the valve rod 4 of power station sluice valve
Enough and back seal mechanism, which is formed, to be sealed.When power station sluice valve in the open state, valve rod 4 is upwardly at back seal mechanism, oblique shoulder
Face and back seal mechanism, which are formed, to be sealed, in this way, can replace filler online under operation in filler failure, effectively keep away
Exempt from the loss of maintenance down bring.
Wherein, power station sluice valve is additionally provided with electric device 17, and electric device 17 is used to go up and down the valve rod 4 of power station sluice valve and then opens
Valve closing door, power station sluice valve are additionally provided with bracket 14, and bracket 14 is used to support electric device 17, the company of fastening between bracket 14 and valve body 1
It connects, and to be bolted.
Effect example 1
Compared with power station sluice valve in the prior art, pretightning force needed for the power station sluice valve of embodiment 1 is smaller, morphotropism more
It is good, under relatively small pressure, also may be implemented more preferably leakproofness effect, and structure more consolidate it is firm.
Effect example 2
Compared with power station sluice valve in the prior art, pretightning force needed for the power station sluice valve of embodiment 2 is smaller, morphotropism more
It is good, under relatively small pressure, also may be implemented more preferably leakproofness effect, and structure more consolidate it is firm.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Under the premise of without departing substantially from the principles of the present invention and essence, many changes and modifications may be made,
But these change and modification each fall within the protection scope of the utility model.
Claims (10)
1. a kind of power station sluice valve, the power station sluice valve has valve body, and the valve body has valve body middle chamber, and the valve body middle chamber uses
Without valve cover pressure self-sealing structure, the no valve cover pressure self-sealing structure includes stuffing box, sealing ring, gasket ring and four cyclizations,
The sealing ring is set between the stuffing box and the valve body, and the inner wall of the sealing ring and the valve body fits, described
Gasket ring is located at the top of the sealing ring, and four cyclization is located at the top of the gasket ring, and the boss of the valve body is for blocking
Four cyclization simultaneously prevents the sealing ring from moving upwards when being squeezed, the valve body middle chamber, the stuffing box, the sealing
The no valve cover pressure for preventing the medium in the power station sluice valve from revealing is collectively formed certainly in circle, the gasket ring and four cyclization
Sealing structure, which is characterized in that the sealing ring is equipped with first annular slot, axis of the first annular slot along the sealing ring
The cross sectional shape of plane is semicircle where line, and the semicircular diameter is overlapped with the inner wall of the valve body, the semicircle
Distance of center circle described in sealing ring lower end surface distance be the sealing ring thickness 1/4~1/3, the power station sluice valve is also set
There is pressing plate, the pressing plate has boss structure, and the boss structure is matched with the valve body, and the pressing plate and the valve body are tight
It is solidly connected, the pressing plate is fastenedly connected with the stuffing box.
2. power station sluice valve as described in claim 1, which is characterized in that the top of the first annular slot is also on the sealing ring
Equipped with the second annular groove, the structure of second annular groove is identical as the first annular slot, and the half of second annular groove
The distance in the semicircular center of circle of first annular slot described in circular distance of center circle is the 1/3 of the thickness of the sealing ring；The valve
The inner wall of body locates pile-up welding hard alloy fitting with second annular groove.
3. power station sluice valve as claimed in claim 1 or 2, which is characterized in that the sealing ring is metal mild steel sealing ring, described
Sealing ring is contacted with the stuffing box for line, the folder formed between the inner wall of the sealing ring and the outside wall surface of the stuffing box
Angle is 2~3 degree；The inner wall of the valve body locates pile-up welding hard alloy fitting with the first annular slot.
4. power station sluice valve as claimed in claim 1 or 2, which is characterized in that the fastening between the pressing plate and the stuffing box
It is connected as the mating connection of stud and nut.
5. power station sluice valve as claimed in claim 1 or 2, which is characterized in that the stuffing box is used to accommodate the filler chamber of filler
Bottom be equipped with Packing seat, be successively arranged above the Packing seat in the filler chamber first lap knit carbon packing ring,
Flexible graphite packing ring and the second circle woollen yarn knitting carbon packing ring.
6. power station sluice valve as claimed in claim 1 or 2, which is characterized in that be additionally provided with above the filler chamber of the stuffing box
Pressing sleeve and gland, the pressing sleeve are used to push down the filler in the stuffing box, the company of fastening between the gland and the stuffing box
It connects, the mating connection being fastenedly connected as stud and nut.
7. power station sluice valve as claimed in claim 1 or 2, which is characterized in that be provided on the flashboard of the power station sluice valve and institute
State the guide groove that the guiding rib on valve body matches, the cooperation of the guiding rib and the guide groove is so that the flashboard only rises
Drop movement.
8. power station sluice valve as claimed in claim 1 or 2, which is characterized in that the valve seat of the power station sluice valve is with boss knot
The symmetrical structure of structure, the boss structure are matched with the valve body.
9. power station sluice valve as claimed in claim 1 or 2, which is characterized in that the flashboard of the power station sluice valve is elastic wedge-type lock
Plate；The angle of wedge of the valve seat orifice of the valve body and the elastic wedge-type flashboard is 5 degree；The valve seat of the power station sluice valve and the elasticity
Pile-up welding hard alloy on the sealing surface formed between wedge-type flashboard.
10. power station sluice valve as claimed in claim 1 or 2, which is characterized in that back seal mechanism is additionally provided on the stuffing box,
Oblique shoulder face is additionally provided on the valve rod of the power station sluice valve, the oblique shoulder face can form with the back seal mechanism and seal；
The power station sluice valve is additionally provided with electric device, and the electric device is used to go up and down the valve rod of the power station sluice valve and then opens and closes
Valve；The power station sluice valve is additionally provided with bracket, and the bracket is used to support the electric device, the bracket and the valve body it
Between for bolt fastening connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821503433.9U CN208778735U (en) | 2018-09-14 | 2018-09-14 | Power station sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821503433.9U CN208778735U (en) | 2018-09-14 | 2018-09-14 | Power station sluice valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208778735U true CN208778735U (en) | 2019-04-23 |
Family
ID=66161063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821503433.9U Active CN208778735U (en) | 2018-09-14 | 2018-09-14 | Power station sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208778735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120723A (en) * | 2019-12-31 | 2020-05-08 | 江苏高中压阀门有限公司 | Power station gate valve |
-
2018
- 2018-09-14 CN CN201821503433.9U patent/CN208778735U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120723A (en) * | 2019-12-31 | 2020-05-08 | 江苏高中压阀门有限公司 | Power station gate valve |
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