CN104455627B - The smithwelding valve body structure of side steam discharge electromagnetic relief valve - Google Patents
The smithwelding valve body structure of side steam discharge electromagnetic relief valve Download PDFInfo
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- CN104455627B CN104455627B CN201410755914.9A CN201410755914A CN104455627B CN 104455627 B CN104455627 B CN 104455627B CN 201410755914 A CN201410755914 A CN 201410755914A CN 104455627 B CN104455627 B CN 104455627B
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/10—Welded housings
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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Abstract
The invention discloses a kind of smithwelding valve body structure of side steam discharge electromagnetic relief valve, described smithwelding valve body is bilateral steam exhaust structure, and the steam discharge flange by valve body part and positioned at its left and right sides and the plate-side plate welding positioned at its front and rear side are formed.The middle part of valve body part is machined with exhaust vent hole in left-right direction, and front and rear side is then machined with upper and lower side horizontal flow hole, between horizontal flow hole and is machined with the through-flow groove in longitudinal direction, and through flow hole and through-flow groove are closed by welding side plate；The processed formation fillet of rotation angle position of through flow hole and through-flow groove；Side plate top and the bottom respectively process charged into oriented horizontal flow hole, the projective structure with arcuate surface.Major advantage：Valve is set no longer to there is the problem of oxidation corrosion product and condensate influence sealing, improve the switch valve speed of valve, blowdown of a safety valve reduction, stability raising, valve body middle chamber height reduction, processing maintenance it is more convenient, with higher security reliability when being used under super (super-) critical operating mode.
Description
Technical field
The present invention relates to a kind of valve mechanism, and in particular to side steam discharge electromagnetism is let out used in a kind of power station main steam system
The structure type of pressure valve body.
Background technology
Electromagnetic relief valve is a kind of important safety relief valve of power station main steam (cross hot vapour) system, is one kind with electricity
The pilot-operated type valve that the drive devices such as magnet driving guide's flap releases steam and acts main valve clack.It is used as main steam safety valve
Equalizing valve, electromagnetic relief valve is used to fast automatic when power station main steam (cross hot vapour) pressure exceedes setting open discharge and steam
Vapour, avoids main steam safety valve action, the action frequency of safety valve is reduced, so as to maintain the performance of main steam safety valve as far as possible
With reliability, the use of extension main steam safety valve and maintenance cycle, unit is set to keep enough safety assurance abilities, and ensure
The balance of unit and stable operation, are the important mating valve and critical valves of fired power generating unit.The fired power generating unit of Large Copacity is especially
Be on ultra supercritical coal-fired unit used in electromagnetic relief valve, due to valve be operated in temperature >=600 DEG C, pressure 26~
Under 31MPa extremely harsh working condition, thus the Performance And Reliability of the design, manufacture and valve of valve is proposed very
High requirement.
The electromagnetic relief valve of current pilot-operated type mainly has two classes from the point of view of the structural shape of product, and a class is with U.S.'s health rope
The product of the enterprise such as Reed (Dresser-Consolidated) and Crosby (Tyco-Crosby) is the American structure of representative
(see Fig. 1), using the form that main valve clack seals face-up, top row vapour, auxiliary valve split side is filled, forge welding structure is used valve body of main valve more
To be designed and manufacture；Another kind of is the use main valve clack sealing surface using wild and the company of East Asia two the product in Japanese ridge as representative
Down, the structure of the exhaust of left and right bilateral, main valve and auxiliary valve integral design.The difference of two kinds of valve mechanism types is to be based on valve body
Structural shape difference and form the different product structure of overall structure.The electromagnetic relief valve product phase of two kinds of structure types
Compare, main valve clack sealing is face-up, top row vapour, the American structure of auxiliary valve split side dress have relatively large number of defect, by this
Structural shape and the use defect of product directly brought mainly include：1st, due to discharge of steam, blast pipe and outlet
The inner chamber of adpting flange can oxidation corrosion quickly because valve is top steam exhaust structure, the corrosion product such as oxide skin can drop or
Accumulated in the flowing of condensed water near main valve clack sealing surface, so as to influence valve seal；2nd, main valve clack upper surface has solidifying
Bearing water to splash drop or even can accumulate can therefore be produced with remaining position on the inside of local or whole sealing surface on the inside of condensate, sealing surface
The larger temperature difference and sealing surface position is deformed or even is ftractureed, cause the use of valve to be affected；3rd, auxiliary valve split side
The structure of dress makes main valve clack to the spatial volume between guide's flap become larger, and above-mentioned space is steamed when causing guide's flap to be opened
The time lengthening that above-mentioned space fills steam and pressure rise and promotes main valve clack to close after the excretion of vapour and the closing of guide's flap,
I.e. valve is longer from the time for being connected to valve opening, pass valve signal to completion valve opening, pass valve events, especially closes the actuation time meeting of valve
There is obvious extension, the working sensitivity reduction of valve is unfavorable for ensureing the safe operation of unit, while closing valve time postpones
Cause blowdown of a safety valve to increase, be also unfavorable for ensureing unit efficiency；4th, auxiliary valve split side assembling structure causes the stability of auxiliary valve not good enough,
Judder during valve steam discharge can influence the functional reliability of auxiliary valve and drive device.Current thermal power generation unit at home and abroad
On the electromagnetic relief valve product of pilot-operated type installed and used be generally such electromagnetic relief valve, substantial amounts of present in it makes
With in problem, many problems, which are traced it to its cause, should be attributed to the influence as described above due to product structure pattern and asking for bringing
Topic.And for structural shape be main valve clack sealing surface down, the exhaust of left and right bilateral, main valve and auxiliary valve integral design Japanese knot
For structure, due to gland steam exhauster position and direction and main valve clack sealing surface direction be different from above-mentioned American structure, thus
The serious shadow brought in the absence of the oxidation corrosion product and condensate of blast pipe and outlet adpting flange inner chamber to valve seal
Ring, while the structure of major-minor valve monoblock type is also beneficial to improve the response speed of valve, to the peace of main steam safety valve and unit
Row for the national games provides more effective protection, and is conducive to improving the structural stability of valve, it is ensured that valve more reliably works.Due to
Main valve clack is down, bilateral exhaust, complex (see Fig. 2 and Fig. 3, Fig. 3 is the flow passage structure of the valve body of major-minor valve monolithic construction
Fig. 2 left-hand sectional view), thus based on existing product design technology, the valve body of existing product failed using casting by
Forging is designed and manufactured.
For it is supporting be installed on the high-temperature high pressure valve of Large Copacity fired power generating unit such as super (super-) critical fired power generating unit for, valve
The pressure parts such as body should be processed preferentially in design and manufacture from forging, valve is had more preferable security reliability, especially
It is that for valve used in extra-supercritical unit main steam system, the material of pressure part can only select F92 steel, Yi Jifa
Body must be manufactured using forging.As it was previously stated, the electromagnetic relief valve of pilot-operated type is if using forged steel valve body, by existing production
Product designing technique valve need to be sealed by main valve clack up, top row vapour, that auxiliary valve split side fills this valve flowing channel structure is more simple
Single product structure is designed, manufactured, and the reliability that many use defects brought therefrom also leverage product makes
With valve often needs breakdown maintenance because of leakage or other use failures or changes accessory, so as to have impact on unit and set
Standby normal operation simultaneously adds maintenance load and maintenance cost, valve frequently break down also to safety in production bring compared with
Big hidden danger.Given this another alternative valve-pneumatic product (forged steel valve body) for opening hard seal ball valve arrangement soon meet the tendency of and
Raw, the manufacturer of external fired power generating unit mating valve and home and abroad station user transfer more to select and using this hard
The product of seal ball-valve structure as main steam system safety relief valve.The pneumatic safety relief for opening hard seal ball valve arrangement soon
The problem of valve also exposes many in substantial amounts of use, such as：Spheroid, the tungsten carbide coating of valve seat easily come off, and cause serious
Interior leakage and bite；The coating of spheroid and valve seat is difficult to repair after scratching or coming off, parts replacement high cost；Pneumatic actuation main valve is moved
The opening and closing speed of work also larger gap compared with the auxiliary valve of electromagnetic drive, cause the working sensitivity of valve it is low, open and close
Pressure difference is big；Influenceed easily to produce by high-temperature high-pressure medium at filler and pad and leaked.Product behaviour in service equally causes anxiety, and gives sometimes
The problem of unit operation and maintenance are brought and influence are even even more serious than the electromagnetic relief valve of pilot-operated type.
Main valve clack down, bilateral exhaust, major-minor valve integral design electromagnetic relief valve although in product structure pattern and
There is more obvious advantage in terms of performance, but there is also shortcoming in structure for the cast steel valve body of existing product：Due to valve
The reason for door lumen design of Sealing Structure, the lumen height of valve body is too high, not only make the processing of body cavity and the welding of valve seat,
Grinding is more difficult, is unfavorable for ensureing the workmanship of valve, and demolition, installation are difficult when also making maintenance, and valve disintegration workload is big, flower
Time-consuming length.
In summary, the supporting electromagnetic relief valve of existing Large Copacity fired power generating unit is due to the structure design and manufacture original of product
Many use defects thus are generated, unfavorable shadow is brought to the safe operation of fired power generating unit and the use and maintenance of equipment
Ring.Electromagnetic relief valve turns into fired power generating unit mating valve has one of critical valves of more serious problem always, and electromagnetism is let out
The problems that pressure valve use is present also turn into long-standing problem power station user, require that product design manufacturing firm must be as early as possible
With the product technology problem for putting forth effort to solve.Especially with fired power generating unit capacity is increasing, temperature and pressure parameter increasingly
High, automaticity is more and more perfect, and solving this problem also becomes more and more urgent.If it is possible to for structure more
For rational main valve clack seal down, the exhaust of left and right bilateral, the electromagnetic relief valve structure of main valve and auxiliary valve integral design and
The valve body structure of the matching used forged steel valve body of suitable Large Copacity fired power generating unit is proposed, undoubtedly can be to solving power station user plane to electricity
Awkward situation at one's wit's end, at a loss what to do is absorbed in when the use of magnetic relief valve product and maintenance problem and brings beneficial help, to protecting
Safe and reliable, the economical operation of card power station unit bring more important influence.
The content of the invention
In order to overcome existing product and the above-mentioned weak point present in technology, the present invention proposes a kind of brand-new electricity
The smithwelding valve body structure of magnetic relief valve, its technical problem to be solved is：Have structure and performance excellent for existing
Gesture but valve body can only be produced in design and manufacture using casting as blank the main valve clack of product down, it is bilateral exhaust, major-minor
The electromagnetic relief valve structure of valve integral design and propose a kind of valve body structure of forged steel material, make the electromagnetic relief valve of pilot-operated type
Product can Large Copacity fired power generating unit especially on overcritical and ultra supercritical coal-fired unit it is safe and reliable, stably make
With solving the problems, such as the use of the electromagnetic relief valve product of long-standing problem power station user.
To achieve these goals, the present invention uses following technical scheme：
A kind of smithwelding valve body structure of side steam discharge electromagnetic relief valve, described smithwelding valve body carries medium for the left and right sides
The bilateral steam exhaust structure of the port of export, valve flowing channel is that the wing passage of both sides enters valve before and after upwards from the medium inlet end of downside
When body lumen, discharge from the valve seat intermediate throughholes on the downside of valve body middle chamber shunt again downwards to the left and right both sides to media outlet
End, that is, valve body general structure pattern be with main valve clack down, bilateral exhaust, the electromagnetism pressure release of major-minor valve integral design
The structure of the cast steel valve body of valve is corresponding.The major technique of the smithwelding valve body structure is crucial as follows：
Steam discharge flange of the described smithwelding valve body by valve body part and positioned at its arranged on left and right sides and forward and backward positioned at its
The side plate of both sides is welded after roughing, and postwelding part surface forms complete side steam discharge electromagnetism pressure release after finishing again
The smithwelding valve body of valve；The profile of the middle part of valve body part is square structure, and the circle of insertion is machined with left-right direction
The exhaust vent hole of shape, the forward and backward side in valve body part is machined with upper horizontal through flow hole, in bottom on top respectively
Lower horizontal through flow hole is machined with, lower horizontal through flow hole makes access road hole and the valve body up processed from valve body lower end
Partial front and back sides insertion, upper horizontal through flow hole then makes the lumen of valve body and the front and back sides insertion of valve body part,
Between the lower horizontal through flow hole of valve body part front and back sides and the aperture of upper horizontal through flow hole and it is machined with longitudinal direction
Through-flow groove, plate-side plate welding is in the front and back sides of valve body part, to upper horizontal through flow hole and lower horizontal through flow hole two ends
The through-flow groove in aperture and longitudinal direction is closed, and side plate is machined with welding groove on its four side for pressing close to valve body surface,
After being welded in side plate and valve body part, longitudinal direction is through-flow runner that groove, which turns into, to be closed passes through lower horizontal through flow hole and upper
Side horizontal flow hole makes access road hole be connected with the lumen of valve body.
In order to which expected purpose is better achieved, the present invention also adds following further technical schemes simultaneously：
Upper horizontal through flow hole, the section basic configuration of the through-flow groove of lower horizontal through flow hole and longitudinal direction are rectangle.
The corner portion intersected in upper horizontal through flow hole with the through-flow groove in longitudinal direction and lower horizontal through flow hole with the through-flow groove in longitudinal direction
Position, the processed formation fillet in 90 ° of corners；Respectively be machined with the upper and lower part of side plate one charged into horizontal flow hole it is convex
Go out structure, the horizontal width of projective structure is suitable with the width in corresponding horizontal flow hole, and the upper surface of top projective structure is
Plane, press close to the upper plane of upper horizontal through flow hole, lower surface be root connect with side plate interior sides surface arcuate surface,
The center line of the arcuate surface is located at the inner side on side plate interior sides surface and the downside of the arcuate surface, bottom projective structure
Lower surface is plane, pressed close to the lower plane of lower horizontal through flow hole, the circle that upper surface connects for root with side plate interior sides surface
Curved surfaces, the center line of the arcuate surface are located at the inner side on side plate interior sides surface and the upside of the arcuate surface；Side plate
After the welding of valve body part, through-flow groove and upper horizontal through flow hole, the turning point of lower horizontal through flow hole in longitudinal direction, by upper
The fillet and arcuate surface stated constitute the circular arc runner being increasingly turned to.
The left and right sides corner intersected in access road hole with lower horizontal through flow hole is machined with arc rotary surface transition.
External screw thread is machined with the upper end of valve body part, threaded engagement is arranged on valve body within the flange separately processed
The middle flange of valve body is constituted in main part.
Electromagnetic relief valve of the present invention, its drive mechanism includes the drive mechanism that active force is provided by electromagnet, and
The drive mechanism of active force is provided by solenoid valve control pneumatic means.
The beneficial effects of the invention are as follows：After the smithwelding valve body structure proposed using technical scheme, it can make
Main valve clack relatively reasonable in structure down, bilateral exhaust, major-minor valve monolithic construction electromagnetic relief valve product Large Copacity fire
Group of motors especially obtains safe and reliable application on overcritical and ultra supercritical coal-fired unit, makes valve in use no longer
There is oxidation corrosion product and condensate enters the problem of main valve clack sealing surface nearby influences valve seal；The switch valve of valve
Speed is improved, blowdown of a safety valve reduces, and advantageously ensures that the safe operation of unit and the operational efficiency of unit；Valve has preferable
Structural stability, advantageously ensures that auxiliary valve and drive mechanism reliably working；Valve body middle chamber is highly substantially reduced, body cavity plus
The welding of work and valve seat, grinding are more convenient, the workmanship of valve are advantageously ensured that, while the whole height of valve is also dropped
Low, demolition, installation are convenient during product repairing, and valve disintegration is simple easily, it is short to expend the time；Valve is in main steam system HTHP work
Condition is particularly when being used under overcritical and ultra supercritical operating mode with higher security reliability.
Brief description of the drawings
Fig. 1 is that the main valve clack of Kang Suo Reeds company of the U.S. seals face-up, top row vapour, the electromagnetism of auxiliary valve split side assembling structure
Relief valve schematic diagram.
Fig. 2 is face-down existing main valve clack sealing, the exhaust of left and right bilateral, major-minor valve monolithic construction, the electricity of cast steel valve body
The structural representation at magnetic relief valve valve body position.
Fig. 3 is the left-hand sectional view at the electromagnetic relief valve valve body position shown in Fig. 2.
Fig. 4 and Fig. 5 are the integrally-built front view of valve body and left view of the embodiment of the present invention one, two respectively.
Fig. 6 is the sectional view being located in Fig. 4 front views at A-A and B-B sections of the embodiment of the present invention one.
Fig. 7 is the sectional view being located in Fig. 4 front views at C-C sections of the embodiment of the present invention one.
Fig. 8 and Fig. 9 are the front view and left view of the valve body part of the embodiment of the present invention one, two.
Figure 10, Figure 11, Figure 12 are the front view, left view and top view of the lateral plate structure of the embodiment of the present invention one respectively.
Figure 13 is the sectional view being located in Fig. 4 front views at A-A and B-B sections of the embodiment of the present invention two.
Figure 14, Figure 15, Figure 16 are the front view, left view and top view of the lateral plate structure of the embodiment of the present invention two respectively.
In figure, 1, valve body part；2nd, flange；3rd, valve seat；4th, steam discharge flange；5th, side plate；6th, lumen；7th, access road
Hole；8th, upper horizontal through flow hole；9th, lower horizontal through flow hole；10th, the through-flow groove in longitudinal direction；11st, fillet；12nd, arcuate surface.
Technical scheme is further elaborated with two embodiments below in conjunction with the accompanying drawings.
Embodiment one
Smithwelding valve body as shown in Fig. 4 and Fig. 5, Fig. 6, Fig. 7, is the bilateral steam discharge that the left and right sides carries media outlet end
Structure, valve flowing channel structure is：Medium inlet end from downside is upward, and the wing passage by front and rear both sides enters valve body middle chamber,
During discharge of steam from the downside of valve body middle chamber valve seat intermediate throughholes downwards, then shunt to the left and right both sides to media outlet end,
The steam discharge elbow and upright gland steam exhauster being connected by the steam discharge flange with the port of export drain into safe place.
The concrete structure of the present embodiment is as follows：The bottom of described smithwelding valve body is the installation connection end of valve, works as valve
Installation connected mode for butt welding connect when valve body lower end process butt welding groove, and when valve need using flange connect peace
Dress mode need to then be set and processing adpting flange when connecting in the lower end of valve body；In the lower end of valve body, up it is machined with entrance and leads to
Road hole (7).Steam discharge flange (4) of the described valve body by valve body part (1) and positioned at its arranged on left and right sides and positioned at it
The side plate (5) of front and rear sides is welded after roughing, and postwelding part surface forms complete side steam discharge after finishing again
The smithwelding valve body of electromagnetic relief valve.As shown in Figure 8, Figure 9, the profile of the middle part of valve body part (1) is square structure,
Be machined with the circular exhaust vent hole of insertion in left-right direction, exhaust vent hole by be welded on valve body part (1) it is left,
The steam discharge flange (4) of right both sides can be connected to related steam discharge pipe fitting.Front and rear sides in valve body part (1), exists respectively
Top is machined with upper horizontal through flow hole (8), lower horizontal through flow hole (9) is machined with bottom, and lower horizontal through flow hole (9) makes
The front and back sides insertion in the access road hole (7) and valve body part (1) that are up processed from valve body lower end, upper horizontal is through-flow
Hole (8) then makes the lumen (6) of valve body and the front and back sides insertion of valve body part (1)；It is forward and backward in valve body part (1)
Between the lower horizontal through flow hole (9) of side and the aperture of upper horizontal through flow hole (8), and it is machined with the through-flow groove (10) in longitudinal direction,
The forward and backward side of valve body part (1) is simultaneously welded with side plate (5) to upper horizontal through flow hole (8) and lower horizontal through flow hole
(9) the through-flow groove (10) in two ends aperture and longitudinal direction is closed (Fig. 6, Fig. 7), and the basic configuration of side plate (5) periphery is rectangle (figure
10th, Figure 11, Figure 12), its four side for pressing close to valve body part (1) side is machined with welding groove, in side plate (5) and valve body master
After body portion (1) is welded, longitudinal direction is through-flow, and runner of the groove (10) as closing passes through lower horizontal through flow hole (9) and upside water
Flat through flow hole (8) makes access road hole (7) be connected with the lumen (6) of valve body.
Side plate (5) and steam discharge flange (4) are with after the welding of valve body part (1), just foring medium by access road hole
(7) lumen (6) is upwardly into by the through-flow groove in longitudinal direction (10) of front and rear sides, then by valve seat (3) center-aisle hole downwards after
And shunt the medium runner discharged to the left and right sides by steam discharge flange (4) (see Fig. 4, Fig. 5).
The electromagnetic relief valve being made up of the smithwelding valve body with above-mentioned flow passage structure because its main valve clack be located at valve seat it
On valve lumen and relative with valve seat, thus main valve clack sealing surface is directed downward, and steam drain also is located at valve body both sides, and auxiliary
Valve can be directly set by bonnet on the upside of valve body, the small flap for steam of being released for auxiliary valve also can be directly disposed at master
The upside of flap, therefore the electromagnetic relief valve being made up of the smithwelding valve body structure used with existing Large Copacity fired power generating unit
Main valve clack upward, top row vapour, auxiliary valve split side dress electromagnetic relief valve compare, overcome present in this kind of product：Oxidation
Corrosion product and condensate influence valve seal, switch valve events time is longer, working sensitivity reduction, blowdown of a safety valve increase
Greatly, structural stability it is not good enough influence valve working reliability the problems such as, while with existing main valve clack down, bilateral exhaust,
The electromagnetic relief valve of the cast steel valve body of major-minor valve monolithic construction is compared, and the security reliability of valve has obtained larger lifting,
It can more reliably use, can solve the problem that overcritical and super under the main steam system high temperature and high pressure condition of Large Copacity fired power generating unit
The supporting needs of supercritical thermal power unit.
In the technical scheme of the present embodiment, upper horizontal through flow hole (8), lower horizontal through flow hole (9) and longitudinal direction are through-flow
The section basic configuration of groove (10) is processed by rectangle, and at right-angled corner with the round-corner transition of certain radius to reduce pressure-bearing
When local stress.
For optimizing flow passage structure, in upper horizontal through flow hole (8) and the through-flow groove (10) in longitudinal direction and lower horizontal through flow hole
(9) rotation angle position intersected with the through-flow groove (10) in longitudinal direction, 90 ° of corners are processed to form fillet (11) (see Fig. 9)；In side plate
(5) the upper and lower part projective structure (Figure 10) that respectively processing one is charged into horizontal flow hole, the horizontal width of projective structure with
The width in corresponding horizontal flow hole is suitable, to ensure in the projective structure energy load level through flow hole.Described top it is convex
Go out the upper surface of structure for plane, with the upper plane of upper horizontal through flow hole (8) to press close to, lower surface is that root and side plate (5) are interior
Arcuate surface (12) that side surface connects, the center line of the arcuate surface (12) are located at the inner side of side plate (5) inner surface
With the downside of the arcuate surface (12)；The lower surface of the projective structure of described bottom is plane and lower horizontal through flow hole
(9) lower plane is pressed close to, upper surface be root connect with side plate (5) inner surface arcuate surface (12), the circular arc table
The center line in face (12) is located at the inner side of side plate (5) inner surface and the upside of the arcuate surface (12).Side plate (5) and valve body
After main part (1) welding, through-flow groove (10) and the steering of upper horizontal through flow hole (8), lower horizontal through flow hole (9) in longitudinal direction
Place, the circular arc runner being increasingly turned to is constituted by above-mentioned fillet (11) and arcuate surface (12).
In the technical scheme of the present embodiment, the left and right sides intersected in access road hole (7) with lower horizontal through flow hole (9)
Corner, is also machined with arc rotary surface transition.
Under normal circumstances, the medium runner of forged steel valve body is formed by way of machining, is machined
The restriction of technological ability, the shape and configuration aspects of runner are often such as taken a sudden turn in the presence of some, flow area suddenly change
Etc. the structure for being easily caused the stronger vortex of medium generation, being unfavorable for medium smooth outflow and dramatically increasing flow passage resistance force of waterproof coefficient
Defect, for gas medium, irrational runner design can also greatly increase produced during medium flow at high speed
Vibration and noise, and influence therefore is brought on system and equipment reliability of operation.The technical scheme of the present embodiment passes through valve
The arcuate surface (12) on fillet (11), side plate (5) on phosphor bodies part (1) and the mistake on the upside of access road hole (7)
The setting of fillet is crossed, makes valve flowing channel more reasonable structure (Fig. 4), flow passage resistance force of waterproof has larger decline, and through-current capability reaches and casting
Valve body is substantially suitable, so that ensure that valve disclosure satisfy that the discharge capacity of working condition requirement, and vibration when helping to control to discharge
With the reliability of noise, guarantee valve working.
Upper horizontal through flow hole (8), the through-flow groove (10) of lower horizontal through flow hole (9) and longitudinal direction section basic configuration it
It is for the ease of the fillet (11) in progress valve body part (1), the projective structure on side plate (5) so being set to rectangle
With the processing of arcuate surface (12), and be conducive to making these finished surfaces to obtain good transition with machined water passage surface
And linking.
In the technical scheme of the present embodiment, the wing passage for the valve body front and rear sides being made up of the through-flow groove (10) in longitudinal direction is complete
In valve body part (1), the relatively simple inner surface of inner surface structure of side plate (5) is by middle plane and upper
Lower both sides connect, to inward side to the face of cylinder composition of bending therewith.
In addition, in the technical scheme of the present embodiment, valve body part (1) upper end and be machined with external screw thread, separately
Threaded engagement is arranged on the middle flange that valve body is constituted on valve body part (1) within the flange (2) of processing.The flange in valve body
The surface being located on the upside of valve body part (1) on the inside of upper end is the surface for installing gasket seal.
Middle flange is installed on valve body by the mode being connected through a screw thread on valve body, is solved in directly being set on forging
Structure design and processing problem present in flange.The present embodiment realized by the structure connected in valve body upper end with flange with
The connection (with combination sealing gasket seal) of upside part, compared with the product (referring to Fig. 2, Fig. 3) of existing cast steel valve body, valve
The lumen of body highly has significant reduction so that the essence of sealing surface when the processing of body cavity and the welding of valve seat and assembling
Grinding becomes more convenient, thus advantageously ensures that the workmanship of valve, meanwhile, the whole height of valve also has larger drop
Low, product is dismounted simply, conveniently, easily in disintegration and maintenance, and workload during product repairing reduces, operating efficiency is carried
It is high；
Embodiment two
The specific implementation structure and embodiment one of the smithwelding valve body technical scheme of the present embodiment, only side plate (5) are different,
The structure and indifference at remaining each position, therefore the present embodiment only makees related discussion to the concrete structure at side plate (5) position, remaining
Do not make then to apply with the identical of embodiment one place and state.
As shown in Figure 13 and Figure 14, Figure 15, Figure 16, inner surface and the table on the inside of the latus inframedium of embodiment one (5) of side plate (5)
Face is only that simple mid-plane is added unlike the face of cylinder of lower both sides, and inner surface is recessed, recessed pars intermedia
Divide and also constituted to be connected therewith from middle plane and up and down both sides, to inward side to the face of cylinder of bending, middle recessed portion
Then there is a concave arc edge ramped up both sides to the left and right, that is, side plate (5) inner surface be with one section of straight line plus two ends with
Tangent 90 ° circular arc scanned along longitudinal path after formed；In addition, upper horizontal through flow hole (8), lower horizontal through flow hole (9)
And the fillet of the right-angled corner in the section of the through-flow groove (10) in longitudinal direction is also suitable with the radius of above-mentioned 90 ° of circular arcs, and more than implementation
The radius of corner of corresponding site in example one.
In technical scheme, side plate (5) is connected with valve body part (1) with the weld seam of side plate (5) surrounding
And ensure the runner on the inside of it and extraneous reliable isolation.In embodiment one, the longitudinal seam of side plate (5) left and right sides, which is worked as, to be applied
Its reliability has been short of when the extreme temperature and pressure operating mode such as super (super-) critical, because the inner surface against the root of weld is
90 ° of right angles (see Fig. 6,7), can form stress concentration phenomenon in this place, be easily caused weld seam and go wrong during compression.And side plate
(5) after inner surface is using the technical scheme of the present embodiment, the inner surface of the root of weld is no longer 90 ° of right-angled corner
(see Figure 13), force-bearing situation has larger improvement.Embodiment one is compared with the lateral plate structure of embodiment two, the side plate of embodiment one
Inner surface processing it is relatively simple, and the processing of the inner surface of the side plate of embodiment two is then relative more complex, but weldering
The force-bearing situation of crack structure more preferably, thus is more suitable for using in super (super-) critical operating mode.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Technical scheme is illustrated above in association with drawings and Examples, but these accompanying drawings and explanation are not
Make sense to limit the scope of the present invention.Those skilled in the art should know that the present invention is not by above-mentioned implementation
The limitation of example and accompanying drawing, its protection domain is defined by appending claims, any without departing from the claims in the present invention
Book define in the range of various changes, the technical scheme that is formed of modification, all spirit and technology without departing from the present invention
Essence, still can belong within scope of the presently claimed invention.
Claims (5)
1. a kind of smithwelding valve body structure of side steam discharge electromagnetic relief valve, described valve body carries media outlet end for the left and right sides
Bilateral steam exhaust structure, valve flowing channel is to enter from the wing passage of the medium inlet end of downside upwards through front and rear both sides in valve body
When chamber, discharge both sides to media outlet end to the left and right is shunted again downwards from the valve seat intermediate throughholes on the downside of valve body middle chamber, its
It is characterised by：Steam discharge flange (4) of the described valve body by valve body part (1) and positioned at its arranged on left and right sides and before it,
The side plate (5) of both sides is welded after roughing afterwards, and postwelding part surface forms complete side steam discharge electricity after finishing again
The smithwelding valve body of magnetic relief valve；The profile of the middle part of valve body part (1) is square structure, is machined with left-right direction
The circular exhaust vent hole of insertion, the forward and backward side in valve body part (1) is machined with upper horizontal through flow hole on top
(8) lower horizontal through flow hole (9), is machined with bottom, lower horizontal through flow hole (9) makes the entrance up processed from valve body lower end
The front and back sides insertion of access opening (7) and valve body part (1), upper horizontal through flow hole (8) then make the lumen (6) of valve body with
The front and back sides insertion of valve body part (1), valve body part (1) front and back sides lower horizontal through flow hole (9) and
Between the aperture of upper horizontal through flow hole (8) and the through-flow groove (10) in longitudinal direction is machined with, side plate (5) is welded in valve body part
(1) front and back sides, to the through-flow groove in upper horizontal through flow hole (8) and lower horizontal through flow hole (9) two ends aperture and longitudinal direction
(10) closed, side plate (5) is machined with welding groove on its four side for pressing close to valve body part (1) side, in side plate (5)
After being welded with valve body part (1), longitudinal direction is through-flow, and runner of the groove (10) as closing passes through lower horizontal through flow hole (9)
Access road hole (7) is set to be connected with the lumen (6) of valve body with upper horizontal through flow hole (8).
2. the smithwelding valve body structure of steam discharge electromagnetic relief valve in side according to claim 1, it is characterised in that：Upper horizontal is led to
Discharge orifice (8), the cross sectional shape of the through-flow groove (10) of lower horizontal through flow hole (9) and longitudinal direction are band fillet or square not with rounded corners
Shape.
3. the smithwelding valve body structure of steam discharge electromagnetic relief valve in side according to claim 2, it is characterised in that：In upper horizontal
The rotation angle position that through flow hole (8) intersects with the through-flow groove (10) in longitudinal direction and lower horizontal through flow hole (9) with the through-flow groove (10) in longitudinal direction,
90 ° of corners are processed to form fillet (11)；One is respectively machined with the upper and lower part of side plate (5) to charge into horizontal flow hole
Projective structure, the width in the horizontal width of projective structure and corresponding horizontal flow hole quite, the upper table of top projective structure
Face is plane, pressed close to the upper plane of upper horizontal through flow hole (8) that lower surface connects for root with side plate (5) inner surface
Arcuate surface (12), the center line of the arcuate surface (12) are located at inner side and circular arc table of side plate (5) inner surface
The downside in face (12), the lower surface of bottom projective structure is pressed close to for plane, with the lower plane of lower horizontal through flow hole (9), upper table
Face be root connect with side plate (5) inner surface arcuate surface (12), the center line of the arcuate surface (12) is positioned at side
The inner side of plate (5) inner surface and the upside of the arcuate surface (12)；After side plate (5) is welded with valve body part (1),
Longitudinal through-flow groove (10) and upper horizontal through flow hole (8), the turning point of lower horizontal through flow hole (9), by above-mentioned fillet (11)
The circular arc runner being increasingly turned to is constituted with arcuate surface (12).
4. the smithwelding valve body structure of steam discharge electromagnetic relief valve in side according to claim 1, it is characterised in that：In access road
The left and right sides corner that hole (7) is intersected with lower horizontal through flow hole (9) is machined with arc rotary surface transition.
5. the smithwelding valve body structure of steam discharge electromagnetic relief valve in side according to claim 1, it is characterised in that：In valve body
Partly the upper end of (1) is machined with external screw thread, and threaded engagement is arranged on valve body part (1) within the flange (2) separately processed
The upper middle flange for constituting valve body.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755914.9A CN104455627B (en) | 2014-12-08 | 2014-12-08 | The smithwelding valve body structure of side steam discharge electromagnetic relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755914.9A CN104455627B (en) | 2014-12-08 | 2014-12-08 | The smithwelding valve body structure of side steam discharge electromagnetic relief valve |
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| CN104455627A CN104455627A (en) | 2015-03-25 |
| CN104455627B true CN104455627B (en) | 2017-07-18 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799193A (en) * | 1971-12-20 | 1974-03-26 | Itt | Combination valve and component thereof |
| JP3620753B2 (en) * | 1995-11-02 | 2005-02-16 | 三輪精機株式会社 | Solenoid control valve for vehicle supply / exhaust switching |
| CN1089414C (en) * | 1998-06-19 | 2002-08-21 | 赵文轩 | New-type safety valve |
| CN2752553Y (en) * | 2004-11-10 | 2006-01-18 | 王家祥 | High pressure valve |
| CN201787162U (en) * | 2010-03-31 | 2011-04-06 | 哈电集团哈尔滨电站阀门有限公司 | Electromagnetic relief valve |
| CN203363316U (en) * | 2013-05-22 | 2013-12-25 | 中广核工程有限公司 | Decompression valve used in serious accident of nuclear power station |
| CN103759021B (en) * | 2013-12-26 | 2017-11-10 | 鞍山电磁阀有限责任公司 | Electromagnetic driven stop valve is used in a kind of pile top of nuclear power station exhaust |
| CN203743539U (en) * | 2014-03-07 | 2014-07-30 | 武汉锅炉集团阀门有限责任公司 | Magnetic pressure release valve |
| CN204628719U (en) * | 2014-12-08 | 2015-09-09 | 章华 | The smithwelding valve body structure of side steam discharge electromagnetic relief valve |
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2014
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Effective date of registration: 20191217 Address after: Bei Da Shu Cun Cun Xi, Fengrun District, Tangshan City, Hebei Province 063000 Patentee after: TANGSHAN ZHENGFENG IRON & STEEL CO., LTD. Address before: Suzhou City, Jiangsu province 215026 Industrial Park of Suzhou Xinglong Street Tinglan home building 16 room 409 Patentee before: Zhang Hua |