CN208057972U

CN208057972U - It is a kind of to idle discharge steam valve

Info

Publication number: CN208057972U
Application number: CN201820161116.7U
Authority: CN
Inventors: 刘德鑫; 张乃波; 杨洋
Original assignee: Heilongjiang North Valve Co ltd
Current assignee: Heilongjiang North Valve Co ltd
Priority date: 2018-01-31
Filing date: 2018-01-31
Publication date: 2018-11-06
Anticipated expiration: 2028-01-31

Abstract

The utility model is related to turn off class valve field more particularly to a kind of to idle discharge steam valve.When adjusting top regulating mechanism, upper and lower displacement action may be implemented in spool, throat bushing is set on valve seat, spool is when upper and lower displacement acts, the opening aperture of throttle orifice can be changed by moving up and down for spool on throat bushing, and then realize multi-level throttle, the partial high pressure for reducing valve internal is poor, and flow can be adjusted, so that whole valve arrangement, can bear High Pressure Difference, flash distillation, the generation of cavitation phenomenons are effectively reduced or avoided, vibrations, noise is small, the structural stability of valve is effectively ensured, and reduces energy waste；In addition, valve seat is fixed at by throat bushing and the first fixation kit on valve body, valve seat is fixed using throat bushing and the first fixation kit, pressing force is installed to provide valve seat by the first fixation kit, valve base sealing is completed, which realizes valve seat and be readily disassembled, and effect is more excellent.

Description

It is a kind of to idle discharge steam valve

Technical field

The utility model is related to turn off class valve field more particularly to a kind of to idle discharge steam valve.

Background technology

Currently, being mounted in Utility Boiler Superheater collection vapour header to idle discharge steam valve (also crying to idle discharge or air-out tube valve) It lights a fire on pipeline, as a kind of valve that excess steam being directly discharged to air.Boiler is commonly used in just to start and two kinds of works of blowing out In condition.When normal operation, when boiler pressure increases, and boiler safety door is not intended to act, can be used unlatching to idle discharge steam valve into Row decompression.It can be seen that very severe to the operating condition of idle discharge steam valve, what when starting was often discharged is steam water interface, work Make to be discharged under state is the high temperature and high pressure steam of total head state.When boiler plays pressure, should be first turned on to idle discharge steam valve pressure release, Normal operation of boiler pressure is maintained, the frequent take-off of safety valve is avoided.

Shut-off valve is all generally used to idle discharge steam valve, when valve is closed, the pressure that spool is born is very big, easy tos produce and lets out Leakage, causes erosion, due to being only once depressured when unlatching, cannot bear High Pressure Difference, often to generate cavitation phenomenons, cause to shake It is dynamic, noise is big, part is made to be quickly damaged, cause valve leaks that mass energy is slatterned.Some valve manufacturers use tune It saves valve form and reduces pressure difference, reduce valve seat and wash away, noise is reduced, if but there is using welding seat, equally will appear The shortcomings that valve seat welding bead is susceptible to crackle；If using non-threaded or when not welded structure need to use lumen flange pressure Firmly sleeve is then susceptible to the case where valve seat leakage is revealed with lumen flange in the structure for pushing down valve seat by sleeve.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of to idle discharge steam valve, and solution must not bear High Pressure Difference, Being also easy to produce cavitation phenomenons leads to that vibrations, noise are big and valve seat seating means are single, the problem of being easy to happen damage.

The technical solution that the utility model solves above-mentioned technical problem is as follows：It is a kind of to idle discharge steam valve, including valve shell, valve Core, filler chamber, transition head, the valve shell form the cavity body structure for accommodating the spool, the valve shell with the transition head It is fixedly connected with the transition head, the spool is arranged inside the valve shell, and the filler chamber is set in the spool On the outside of portion, the filler chamber is connect by the second fixation kit with the valve shell, and band movable valve plug is provided in the transition head The regulating mechanism moved up and down, the regulating mechanism are rotatably connected with the transition head, the regulating mechanism and the spool It is connected through a screw thread；

The valve shell includes：Valve body, valve seat and valve deck, the valve body, valve deck and transition head are in turn connected to form receiving The cavity body structure of the spool, the entrance and exit of connection is provided on the valve body, and the valve seat is sleeve-shaped, the valve seat Setting is formed by entrance and exit in channel, and the valve seat upper end is provided with throat bushing, and section is provided on the throat bushing Discharge orifice, the throat bushing are set on the outside of the valve seat upper end, and the throat bushing is set in the spool lower end outside, the valve Core lower end can release formula with the valve seat and offset, and the valve seat is fixed at valve by the throat bushing and the first fixation kit On body.

Further, first fixation kit includes the one or four cyclization, sleeve pressing plate, baffle ring, bolt, and the described 1st closes Ring is embedded on the valve interior surface, and the sleeve pressing plate is set in the throat bushing upper outside, the set with baffle ring Cylinder pressing plate is separately positioned on baffle ring above and below the one or four cyclization, baffle ring described in the screw bolt passes and set Cylinder pressing plate is simultaneously connected by band box nut, and pad is equipped with locking plate, the throat bushing between the band box nut and the sleeve pressing plate Limiting section is provided on outer surface, the sleeve pressing plate offsets with the limiting section, the baffle ring upper surface and the described 1st Cyclization lower surface offsets.

Further, the first seal assembly, the first seal assembly set are provided between the valve seat and the throat bushing It is located on the outside of the valve seat；

First seal assembly includes the first sealing ring and the first pressure ring, and first sealing ring and the first pressure ring cover It is located on the outside of the valve seat, first sealing ring is connect with the valve seat and the valve seal respectively, first sealing Circle downside offsets with the valve seat, offsets with first pressure ring lower surface on the upside of first sealing ring, first pressure ring Upper surface offsets with the throat bushing.

Further, the filler chamber includes filler chamber's seat, gland and filler seat ring, filler chamber's seat, filler pressure Lid is set on the outside of the spool, under the internal diameter on filler chamber's base inner surface top is more than in filler chamber's base inner surface Portion's internal diameter, filler chamber's seat, gland inner surface and spool offset, and filler chamber's seat is detachable with the gland Formula is tightly connected, and filler chamber's seat, gland form annular chamber with the spool on filler chamber's base inner surface top Body structure, the filler seat ring are arranged in the annular housing, and the filler seat ring is set on the spool, the filler The lower end position in the annular housing is arranged in seat ring, and graphite circle is provided in the annular housing, and the graphite snare is located at On the spool, filler chamber's seat is connect with the valve body by second fixation kit.

Further, it is provided with the second seal assembly on filler chamber seat and valve body phase overlapped outer surface, it is described Second seal assembly is set on filler chamber's seat outer surface, second seal assembly and the second fixation kit phase It supports.

Further, second fixation kit includes pressing plate, the two or four cyclization, clamp and screw, and the clamp fixation is set It sets in filler chamber seat outer surface of upper, the two or four cyclization is embedded on the valve interior surface, the pressing plate set It is located at filler chamber's seat outside, is provided with threaded hole in the clamp, the screw passes through the threaded hole and the clamp It is threadedly coupled, the screw lower end offsets with the pressing plate upper surface, the pressing plate lower surface and the two or the four cyclization upper table Face offsets, and the two or the four cyclization lower surface offsets with second seal assembly.

Further, second seal assembly includes the second sealing ring and the second pressure ring；

Second sealing ring and the second pressure ring are set in filler chamber seat outside, second sealing ring respectively with Filler chamber's seat is connected with the valve seal, is offseted with the filler chamber on the downside of second sealing ring, and described second It offsets with second pressure ring lower surface on the upside of sealing ring, second pressure ring upper surface offsets with the two or four cyclization.

Further, the spool includes flap, valve rod, flap gland, guide plate, and the valve rod lower end is embedded in the valve At valve central upper portion position, the valve rod lower end is detachably connected with the flap by the flap gland, the guide plate The medium position of the valve rod, inner surface of the lateral wall of the guide plate with the valve deck on top are fixed at by pin Slidable connection, the valve rod upper end are threadedly coupled with the regulating mechanism.

Further, the valve rod includes first segment and second segment, and the first segment passes through the flap pressure with the flap Lid is detachably connected, and the guide plate is fixed at the medium position of the second segment by pin, the second segment upper end with The regulating mechanism is threadedly coupled, and the first segment extends with the second segment at link position from top to bottom, from inside to outside, The transition head with certain angle of inclination is formed, is overlapped in lower section in the filler chamber and the second segment on the outside of the second segment Anti- sealing ring is arranged at position, the anti-sealing ring is arranged between the filler chamber and the second segment, the transition head Formula overlap joint can be released with the anti-sealing ring.

Further, the regulating mechanism includes valve stem nut, individual event thrust ball bearing and one group of disc spring, the transition head with There are installation space, the individual event thrust ball bearing and disc springs to be set on the outside of the valve stem nut between the valve stem nut And be arranged in the installation space, the disc spring upper and lower surface offsets with the transition head, individual event thrust ball bearing respectively, institute Valve stem nut is stated to be threadedly coupled with the spool.

The utility model provides a kind of to idle discharge steam valve, including valve shell, spool, filler chamber, transition head, the valve shell The cavity body structure for accommodating the spool is formed with the transition head, the valve shell is fixedly connected with the transition head, the valve Core is arranged inside the valve shell, and the filler chamber is set in outside in the middle part of the spool, and the filler chamber is solid by second Determine component and the valve shell, the regulating mechanism moved up and down with movable valve plug, the regulating mechanism are provided in the transition head It is rotatably connected with the transition head, the regulating mechanism is connected through a screw thread with the spool；

In this way, when adjusting above-mentioned regulating mechanism, upper and lower displacement action may be implemented in spool, and throat bushing is arranged on valve seat, When upper and lower displacement acts, the opening aperture of throttle orifice can be changed spool by moving up and down for spool on throat bushing Become, and then realize multi-level throttle, the partial high pressure for reducing valve internal is poor, and flow can be adjusted so that integral valve Structure can bear High Pressure Difference, effectively reduce or avoid the generation of cavitation phenomenons, vibrations, noise is small, has the small knot for ensureing valve Structure stability reduces energy waste；In addition, valve seat is fixed at by throat bushing and the first fixation kit on valve body, use Throat bushing is fixed valve seat with the first fixation kit, installs pressing force to provide valve seat by the first fixation kit, completes Valve base sealing, the structure realize valve seat and are readily disassembled, and effect is more excellent.It this have the advantage that in terms of existing technologies：Energy High Pressure Difference is enough born, effectively reduces or avoid the generation of cavitation phenomenons, vibrations, noise is small, has the small stable structure for ensureing valve Property, energy waste is reduced, valve seat is readily disassembled, and effect is more excellent.

Description of the drawings

Fig. 1 is a kind of overall structure diagram to idle discharge steam valve of the utility model.

In attached drawing, parts list represented by the reference numerals are as follows：

1, valve body, 2, valve seat, 3, valve deck, 4, throat bushing, the 5, the 1st cyclization, 6, sleeve pressing plate, 7, baffle ring, 8, bolt, 9, band box nut, the 10, first sealing ring, the 11, first pressure ring, 12, filler chamber's seat, 13, gland, 14, filler seat ring, 15, Graphite circle, 16, pressing plate, the 17, the 2nd 4 cyclization, 18, clamp, 19, screw, the 20, second sealing ring, the 21, second pressure ring, 22, valve Valve, 23, valve rod, 24, flap gland, 25, guide plate, 26, anti-sealing ring, 27, valve stem nut, 28, individual event thrust ball bearing, 29, disc spring, 30, transition head.

Specific implementation mode

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining this practicality It is novel, it is not intended to limit the scope of the utility model.

In the description of the present invention, it should be understood that term "upper", "lower", "center", "inner", "outside", The orientation or positional relationship of the instructions such as "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching State the utility model and simplify and describe, do not indicate or imply the indicated device or element must have a particular orientation, with Specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

In the application, as shown in Figure 1：Centered on valve deck 3, valve deck 3 towards transition head 30 be upper direction, 3 direction of valve deck Valve body 1 is lower direction.

As shown in Figure 1, the utility model offer is a kind of to idle discharge steam valve, including valve shell, spool, filler chamber, transition head 30, the valve shell forms the cavity body structure for accommodating the spool, the valve shell and the transition head with the transition head 30 30 are fixedly connected, and the spool is arranged inside the valve shell, and the filler chamber is set in outside in the middle part of the spool, described Filler chamber is provided with the adjusting moved up and down with movable valve plug by the second fixation kit and the valve shell in the transition head 30 Mechanism, the regulating mechanism are rotatably connected with the transition head, and the regulating mechanism is connected through a screw thread with the spool；

The valve shell includes：Valve body 1, valve seat 2 and valve deck 3, the valve body 1, valve deck 3 and transition head 30 are sequentially connected shape At the cavity body structure for accommodating the spool, the entrance and exit of connection is provided on the valve body 1, the valve seat 2 is sleeve-shaped, The setting of the valve seat 2 is formed by entrance and exit in channel, and 2 upper end of the valve seat is provided with throat bushing 4, the throat bushing Throttle orifice is provided on 4, the throat bushing 4 is set on the outside of 2 upper end of the valve seat, and the throat bushing 4 is set in the spool Lower end outside, the spool lower end can release formula with the valve seat 2 and offset, and the valve seat 2 is solid by the throat bushing 4 and first Determine component to be fixed on valve body 1.In this way, when adjusting above-mentioned regulating mechanism, upper and lower displacement action may be implemented in spool, in valve Throat bushing 4 is set on seat 2, and for spool when upper and lower displacement acts, the opening aperture of throttle orifice can pass through spool on throat bushing 4 It moves up and down to be changed, and then realizes multi-level throttle, the partial high pressure for reducing valve internal is poor, and can be adjusted Flow so that whole valve arrangement can bear High Pressure Difference, effectively reduce or avoid the generation of cavitation phenomenons, vibrations, noise be small, There is the small structural stability for ensureing valve, reduces energy waste；In addition, valve seat 2 is fixed by throat bushing 4 and the first fixation kit It is arranged on valve body 1, valve seat 2 is fixed with the first fixation kit using throat bushing 4, is provided by the first fixation kit Valve seat 2 installs pressing force, completes valve seat 2 and seals, which realizes valve seat 2 and be readily disassembled, and effect is more excellent.Relative to existing It is this have the advantage that for technology：High Pressure Difference can be born, effectively reduces or avoid the generation of cavitation phenomenons, vibrations, noise be small, There is the small structural stability for ensureing valve, reduce energy waste, valve seat 2 is readily disassembled, and effect is more excellent.

Wherein it should be noted that：It is respectively provided with interconnecting piece on valve body 1 and valve deck 3, passes through double end spiral shell between two interconnecting pieces It tethering and connects, stud one end is threadedly coupled with the interconnecting piece of valve body 1, and the interconnecting piece on valve deck 3 is set on the outside of stud, By the way that the interconnecting piece on valve deck 3 is fixed with box nut, when dismounting, dismounting lower band box nut can be by valve deck 3 from double end Bolt removes, installation, convenient disassembly.Further illustrate be：4 inner wall of throat bushing coordinates with flap outer wall, passes through throat bushing On throttle orifice form first throttle pair, adjustment effect is played according to opening size；Valve clack sealing surface and sealing surface of seat simultaneously The second throttling fit is formed, forms the circular passage of variation according to opening size, valve clack sealing surface includes most lower with conical portion position Portion's protrusion forms third throttling fit with valve seat endoporus, and the circular passage of variation is formed according to opening size.

The aisle spare of three-level throttling fit is to be designed after calculating, and cooperatively forms multi-level throttle.Play reduction part Pressure difference effectively reduces or avoids flash distillation, the generation of cavitation phenomenons.Multi-level throttle pair can need to design the spy that is in line according to user Property, equal percentage characteristics and the fast forms such as opening characteristic.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：First fixation kit includes the one or four cyclization 5, sleeve pressing plate 6, baffle ring 7, bolt 8, and the one or four cyclization 5 is embedded On 1 inner surface of the valve body, the sleeve pressing plate 6 is set in 4 upper outside of the throat bushing, the sleeve with baffle ring 7 Pressing plate 6 is separately positioned on baffle ring 7 above and below the one or four cyclization 5, and the bolt 8 sequentially passes through the baffle ring 7 It is connect with sleeve pressing plate 6 and by band box nut 9, pad is equipped with locking plate, institute between the band box nut 9 and the sleeve pressing plate 6 State and be provided with limiting section on 4 outer surface of throat bushing, the sleeve pressing plate 6 offsets with the limiting section, 7 upper surface of the baffle ring with One or four cyclization, 5 lower surface offsets.In this way, the one or four cyclization 5 is embedded on 1 inner surface of valve body, position, that is, quilt of baffle ring 7 One or four cyclization 5 limits, according to the connection relation between each component it is found that when screwing band box nut 9, the band compressing set of box nut 9 Cylinder pressing plate 6 moves downward, and for sleeve pressing plate 6 due to offseting with the limiting section on 4 outer surface of throat bushing, sleeve pressing plate 6 is throttling Set 4 provides downward pressure, and then realizes and mutually overlapped with outlet link position relative to the entrance on valve body 1 to valve seat 2, ensures Sealing of the valve seat 2 relative to valve body 1；The pad setting locking plate between band box nut 9 and sleeve pressing plate 6, locking plate can enhance with cover The coupling mechanism force of nut 9 effectively prevent band box nut 9 to loosen.That is：The hold-down mechanism of valve seat 2 is by being embedded in valve body 1 One or four cyclization 5 of lumen and matched baffle ring 7 fix bolt 8, are then pressed by band box nut 9 and sleeve pressing plate 6 Firmly throat bushing 4 installs pressing force to provide valve seat 2, completes valve seat 2 and seals, which realizes valve seat 2 and be readily disassembled, and solves 2 non-detachable disadvantage of welding seat of having determined, and sealing performance is better than the effect of other valve gasket seals.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：The first seal assembly is provided between the valve seat 2 and the throat bushing 4, first seal assembly is set in the valve 2 outside of seat；

First seal assembly includes the first sealing ring 10 and the first pressure ring 11, first sealing ring 10 and first Pressure ring 11 is set in 2 outside of the valve seat, and first sealing ring 10 connects with the valve seat 2 and the sealing of the valve body 1 respectively It connects, first sealing ring, 10 downside offsets with the valve seat 2, under first sealing ring, 10 upside and first pressure ring 11 Surface offsets, and 11 upper surface of the first pressure ring offsets with the throat bushing 4.In this way, the first seal assembly of setting can be effective Increase the air-tightness of valve seat 2 and 1 link position of valve body, ensures sealing performance；The method used in the application is outside valve seat 2 Setting can accommodate the space of the first sealing ring 10 and the first pressure ring 11 on surface, and the first sealing ring 10 is set in 2 appearance of valve seat Face realizes that the first pressure ring 11 is arranged in sealing function, 10 top of the first sealing ring, and the first pressure ring 11 can ensure the pressure of throat bushing 4 Clamp force stepless action prevents 10 local pressure of the first sealing ring is excessive from the first sealing ring 10 being caused to damage on the first sealing ring 10 It is bad.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：The filler chamber includes filler chamber's seat 12, gland 13 and filler seat ring 14, filler chamber's seat 12, gland 13 It is set on the outside of the spool, the internal diameter on 12 inner surface tops of filler chamber's seat is more than in the filler chamber 12 inner surfaces of seat Lower inner diameter, filler chamber's seat 12,13 inner surface of gland and spool offset, filler chamber's seat 12 and the filler pressure 13 detachable-type sealed of lid connects, filler chamber's seat 12, gland 13 table in filler chamber seat 12 with the spool Annular housing structure is formed at face top, and the filler seat ring 14 is arranged in the annular housing, and the filler seat ring 14 is arranged On the spool, the lower end position in the annular housing is arranged in the filler seat ring 14, is provided in the annular housing Graphite circle 15, the graphite circle 15 are set on the spool, and filler chamber's seat 12 and the valve body 1 are solid by described second Determine component connection.In this way, since the internal diameter on 12 inner surface tops of filler chamber's seat is more than filler chamber's 12 inner surface middle and lower part internal diameters of seat, After filler chamber's seat 12 is mounted on spool, the larger part of internal diameter can form the installation space of certain capacity with spool, After 12 upper ends of filler chamber's seat install gland 13, filler chamber's seat 12, gland 13 form the appearance of relative closure with spool It receives space, and graphite circle 15 is set in the accommodation space, graphite wear-resistant material can be in 200~2000 DEG C of temperature very high Sliding speed under, do not have to lubricating oil and work, effectively mitigate resistance to sliding of the spool in action, and graphite material have it is good Good corrosion resistance, the equipment of many conveying corrosive mediums, widely used graphite material are made sealing ring, do not need to add in running Enter lubricating oil, the application being particularly suitable in valve type product.It should be noted that：Filler chamber's seat 12 and filler pressure described above 13 detachable-type sealed of lid connects, and specific connection type is：It is respectively provided with mounting portion on filler chamber's seat 12 and gland 13, It being attached by bolt, washer and nut, in the application, bolt is hinged in the mounting portion position of filler chamber's seat 12, in this way, When installing gland 13, gland 13 will not limit the installation of gland 13 because of the position of bolt, improve installation effect Rate.Further preferred technical solution is：Filler chamber seat 12 and 1 phase of the valve body are provided with second on overlapped outer surface Seal assembly, second seal assembly are set on 12 outer surfaces of filler chamber seat, second seal assembly with it is described Second fixation kit offsets.In this way, the second seal assembly of setting, to ensure that filler chamber's seat 12 and 1 phase lap position of valve body seal Being used cooperatively for performance, the first seal assembly mentioned through the above and the second seal assembly, it is whole to considerably increase valve The leakproofness of body.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：Second fixation kit includes pressing plate 16, the two or four cyclization 17, clamp 18 and screw 19, and the clamp 18 is fixedly installed In the filler chamber 12 outer surface of upper of seat, the two or four cyclization 17 is embedded on 1 inner surface of the valve body, the pressing plate 16 are set in 12 outside of filler chamber's seat, are provided with threaded hole in the clamp 18, the screw 19 passes through the threaded hole Be threadedly coupled with the clamp 18,19 lower end of the screw offsets with 16 upper surface of the pressing plate, 16 lower surface of the pressing plate with Two or four cyclization, 17 upper surface offsets, and 17 lower surface of the two or four cyclization offsets with second seal assembly.In this way, Two or four cyclization 17 is embedded on the inner surface of valve body 1, and 16 lower surface of pressing plate offsets with 17 upper surface of the two or four cyclization, is screwing When screw 19, since screw 19 is that screw-thread fit is connect with clamp 18, screw 19 is travelled downwardly relative to clamp 18, is being traveled across Cheng Zhong, screw 19 pushes pressing plate 16 to move down, but 16 lower surface of pressing plate offsets with 17 upper surface of the two or four cyclization, pressing plate 16 Position limited, can not move down, under the driving of active force, clamp 18 moves up, clamp 18 drive filler chamber Seat 12 moves up, at this point, the upper surface of the first seal assembly is overlapped with 17 lower surface of the two or four cyclization, considerably increases the second sealing The local pressure of component so that the second seal assembly sealing effect is more preferably.Need exist for explanation be a bit：Above-mentioned clamp 18 can To be overall structure, it is threaded installation of the hole with attachment screw 19 in center, clamp 18 can also be two semi-circulars The structure of through-hole is formed, and screw thread is opened up in the inner surface of the semiorbicular clamp of two valves 18, with the installation of attachment screw 19, here The structure applicant of other forms does not repeat；Further preferred technical solution is：Second seal assembly includes second Sealing ring 20 and the second pressure ring 21；Second sealing ring, 20 and second pressure ring 21 is set in 12 outside of filler chamber's seat, Second sealing ring 20 is tightly connected with the filler chamber 12 and the valve body 1 respectively, second sealing ring, 20 downside It offseting with the filler chamber 12, second sealing ring, 20 upside offsets with 21 lower surface of the second pressure ring, and described second 21 upper surface of pressure ring offsets with the two or four cyclization 17.In this way, setting can accommodate second on 12 outer surfaces of filler chamber's seat The space of sealing ring 20 and the second pressure ring 21, the second sealing ring 20 are set in 12 outer surfaces of filler chamber's seat and realize sealing function, the The second pressure ring 21 is arranged in two sealing rings, 20 top, and the second pressure ring 21 can ensure the pressing force stepless action that filler chamber's seat 12 provides On the second sealing ring 20, prevent 20 local pressure of the second sealing ring is excessive from the second sealing ring 20 being caused to damage.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：The spool includes flap 22, valve rod 23, flap gland 24, guide plate 25, and 23 lower end of the valve rod is embedded in the flap At 22 central upper portion positions, 23 lower end of the valve rod is detachably connected with the flap 22 by the flap gland 24, described Guide plate 25 is fixed at the medium position of the valve rod 23, the lateral wall of the guide plate 25 and the valve deck 3 by pin Inner surface slidable connection on top, 23 upper end of the valve rod are threadedly coupled with the regulating mechanism.In this way, 23 lower end of valve rod It is detachably connected by flap gland 24 with flap 22, realizes that valve rod 23 is detachably installed, in order to which valve rod 23 is mounted on flap pressure Lid 24 is formed by cavity with flap 22 and more consolidates, and pad sets a pad at the position of valve rod 23 Yu 22 joint of flap Piece so that the installation of valve rod 23 more fastens；Setting guide plate 25 is to ensure valve rod 23 when moving up and down, the central shaft of valve rod 23 Sidesway will not occur for line, and valve rod 23 when moving, is more uniformly stressed, to realize that above-mentioned valve rod 23 can be under specified track Mobile, inner surface of the valve deck 3 at 25 position of guide plate is designed as cylindrical slideway, to ensure the sliding trace of guide plate 25； Wherein it should be noted is that：23 lower end of valve rod is useful for being fastened on the limit convex below flap gland 24 in end set It rises, whole flap gland 24 is in catwalk shape, and through-hole is opened up in centre position so that flap gland 24 is set in 23 outside of valve rod, valve Valve gland 24 offsets in the limit protrusion of salient position and valve rod 23, is fixed to valve rod 23.Further preferred skill Art scheme is：The valve rod 23 includes first segment and second segment, and the first segment passes through the flap gland with the flap 22 24 are detachably connected, and the guide plate 25 is fixed at the medium position of the second segment, the second segment upper end by pin It is threadedly coupled with the regulating mechanism, the first segment prolongs with the second segment at link position from top to bottom, from inside to outside It stretches, forms the transition head 30 with certain angle of inclination, the second segment outside is in the filler chamber and the second segment under Anti- sealing ring 26 is arranged at square lap position, the anti-sealing ring 26 is arranged between the filler chamber and the second segment, The transition head 30 can release formula overlap joint with the anti-sealing ring 26.In this way, regulating mechanism is when rotated, due to second segment upper end It is threadedly coupled with regulating mechanism, second segment and entire spool is driven to act upward or downward；Here is emphasized in the above content One section extends with second segment at link position from top to bottom, from inside to outside, forms the transition head 30 with certain angle of inclination, When entire spool is promoted to certain altitude so that when transition head 30 is overlapped with anti-sealing ring 26, transition head 30 oppresses anti-sealing ring 26 are further ensured that the leakproofness of entire valve.

The utility model to idle discharge steam valve, as shown in Figure 1, can be on the basis of the technical solution described in front It is：The regulating mechanism includes valve stem nut 27, individual event thrust ball bearing 28 and one group of disc spring 29, the transition head and the valve There are installation spaces, the individual event thrust ball bearing 28 and disc spring 29 to be set in outside the valve stem nut 27 between stem nut 27 Side simultaneously be arranged in the installation space, 29 upper and lower surface of the disc spring respectively with the transition head, individual event thrust ball bearing 28 It offsets, the valve stem nut 27 is threadedly coupled with the spool.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims

1. a kind of to idle discharge steam valve, it is characterised in that：Including valve shell, spool, filler chamber, transition head (30), the valve shell The cavity body structure for accommodating the spool, the valve shell and the fixed company of the transition head (30) are formed with the transition head (30) It connects, the spool is arranged inside the valve shell, and the filler chamber is set in outside in the middle part of the spool, and the filler chamber is logical The second fixation kit and the valve shell are crossed, the regulating mechanism moved up and down with movable valve plug is provided in the transition head (30), The regulating mechanism is rotatably connected with the transition head, and the regulating mechanism is connected through a screw thread with the spool；

The valve shell includes：Valve body (1), valve seat (2) and valve deck (3), the valve body (1), valve deck (3) and transition head (30) according to Secondary connection forms the cavity body structure for accommodating the spool, and the entrance and exit of connection, the valve seat are provided on the valve body (1) (2) it is sleeve-shaped, valve seat (2) setting is formed by entrance and exit in channel, and valve seat (2) upper end is provided with section Stream covers (4), and throttle orifice is provided on the throat bushing (4), and the throat bushing (4) is set on the outside of the valve seat (2) upper end, institute It states throat bushing (4) and is set in the spool lower end outside, the spool lower end can release formula with the valve seat (2) and offset, described Valve seat (2) is fixed at by the throat bushing (4) and the first fixation kit on valve body (1).

2. according to claim 1 to idle discharge steam valve, it is characterised in that：First fixation kit includes the one or four cyclization (5), sleeve pressing plate (6), baffle ring (7), bolt (8), the one or four cyclization (5) are embedded on the valve body (1) inner surface, institute It states sleeve pressing plate (6) and is set in the throat bushing (4) upper outside, the sleeve pressing plate (6) and baffle ring (7) with baffle ring (7) It is separately positioned on above and below the one or four cyclization (5), the bolt (8) sequentially passes through the baffle ring (7) and sleeve Pressing plate (6) is simultaneously connected by band box nut (9), and pad is equipped with locking plate between the band box nut (9) and the sleeve pressing plate (6), Limiting section is provided on throat bushing (4) outer surface, the sleeve pressing plate (6) offsets with the limiting section, the baffle ring (7) Upper surface offsets with the one or four cyclization (5) lower surface.

3. according to claim 1 to idle discharge steam valve, it is characterised in that：Between the valve seat (2) and the throat bushing (4) It is provided with the first seal assembly, first seal assembly is set on the outside of the valve seat (2)；

First seal assembly includes the first sealing ring (10) and the first pressure ring (11), first sealing ring (10) and first Pressure ring (11) is set on the outside of the valve seat (2), first sealing ring (10) respectively with the valve seat (2) and the valve body (1) be tightly connected, offset with the valve seat (2) on the downside of first sealing ring (10), on the upside of first sealing ring (10) and First pressure ring (11) lower surface offsets, and the first pressure ring (11) upper surface offsets with the throat bushing (4).

4. according to claim 1 to idle discharge steam valve, it is characterised in that：The filler chamber includes filler chamber's seat (12), fills out Expect that gland (13) and filler seat ring (14), filler chamber's seat (12), gland (13) are set on the outside of the spool, institute The internal diameter for stating filler chamber's seat (12) inner surface top is more than filler chamber seat (12) inner surface middle and lower part internal diameter, the filler chamber Seat (12), gland (13) inner surface and spool offset, and filler chamber's seat (12) and the gland (13) are detachable Formula is tightly connected, and filler chamber's seat (12), gland (13) are with the spool on filler chamber seat (12) inner surface Portion forms annular housing structure, and the filler seat ring (14) is arranged in the annular housing, and the filler seat ring (14) is arranged On the spool, the lower end position in the annular housing is arranged in the filler seat ring (14), is arranged in the annular housing There are graphite circle (15), the graphite circle (15) to be set on the spool, filler chamber's seat (12) passes through with the valve body (1) The second fixation kit connection.

5. according to claim 4 to idle discharge steam valve, it is characterised in that：Filler chamber's seat (12) and the valve body (1) The second seal assembly is mutually provided on overlapped outer surface, second seal assembly is set in described filler chamber's seat (12) appearance On face, second seal assembly offsets with second fixation kit.

6. according to claim 5 to idle discharge steam valve, it is characterised in that：Second fixation kit include pressing plate (16), Two or four cyclization (17), clamp (18) and screw (19), the clamp (18) are fixed at filler chamber's seat (12) top On outer surface, the two or four cyclization (17) is embedded on the valve body (1) inner surface, and the pressing plate (16) is set in described fill out Expect on the outside of room seat (12), is provided with threaded hole on the clamp (18), the screw (19) passes through the threaded hole and the folder (18) are bound round to be threadedly coupled, screw (19) lower end offsets with the pressing plate (16) upper surface, pressing plate (16) lower surface and Two or four cyclization (17) upper surface offsets, and the two or four cyclization (17) lower surface offsets with second seal assembly.

7. according to claim 6 to idle discharge steam valve, it is characterised in that：Second seal assembly includes the second sealing ring (20) and the second pressure ring (21)；

Second sealing ring (20) and the second pressure ring (21) are set on the outside of filler chamber's seat (12), second sealing It encloses (20) to be tightly connected with filler chamber seat (12) and the valve body (1) respectively, the second sealing ring (20) downside and institute It states filler chamber's seat (12) to offset, offset with the second pressure ring (21) lower surface on the upside of second sealing ring (20), described the Two pressure rings (21) upper surface offsets with the two or four cyclization (17).

8. according to claim 1-7 any one to idle discharge steam valve, it is characterised in that：The spool includes flap (22), valve rod (23), flap gland (24), guide plate (25), valve rod (23) lower end are embedded on the flap (22) top Center position, valve rod (23) lower end is detachably connected with the flap (22) by the flap gland (24), described Guide plate (25) is fixed at the medium position of the valve rod (23) by pin, the lateral wall of the guide plate (25) with it is described In the inner surface slidable connection on top, valve rod (23) upper end is threadedly coupled valve deck (3) with the regulating mechanism.

9. according to claim 8 to idle discharge steam valve, it is characterised in that：The valve rod (23) includes first segment and second Section, the first segment are detachably connected with the flap (22) by the flap gland (24), and the guide plate (25) passes through Pin is fixed at the medium position of the second segment, and the second segment upper end is threadedly coupled with the regulating mechanism, and described the One section extends with the second segment at link position from top to bottom, from inside to outside, forms the transition with certain angle of inclination Head (30), the second segment outside are arranged with anti-sealing ring in the filler chamber and the second segment at the lap position of lower section (26), the anti-sealing ring (26) is arranged between the filler chamber and the second segment, the transition head (30) with it is described anti- Sealing ring (26) can release formula overlap joint.

10. according to claim 1-7 any one to idle discharge steam valve, it is characterised in that：The regulating mechanism includes valve Stem nut (27), individual event thrust ball bearing (28) and one group of disc spring (29), between the transition head and the valve stem nut (27) There are installation space, the individual event thrust ball bearing (28) and disc spring (29) are set on the outside of the valve stem nut (27) and set Set in the installation space, disc spring (29) upper and lower surface respectively with the transition head, individual event thrust ball bearing (28) phase It supports, the valve stem nut (27) is threadedly coupled with the spool.