CN105065696A - Quick-closing regulating valve - Google Patents
Quick-closing regulating valve Download PDFInfo
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- CN105065696A CN105065696A CN201510510401.6A CN201510510401A CN105065696A CN 105065696 A CN105065696 A CN 105065696A CN 201510510401 A CN201510510401 A CN 201510510401A CN 105065696 A CN105065696 A CN 105065696A
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- quick
- valve
- closing valve
- closing
- steam
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Turbines (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a quick-closing regulating valve, and belongs to the field of hydraulic valves. The quick-closing regulating valve comprises an upper valve deck, a valve body, a lower valve deck, a valve seat, a regulating valve guide sleeve, a regulating valve core, a quick-closing valve rod and a quick-closing valve core. The regulating valve guide sleeve is mounted in a steam outlet cavity of the valve body. A second stroke hole used for allowing the quick-closing valve rod to penetrate through and to be guided is formed in the position, corresponding to a quick-closing valve rod mounting hole, of the valve seat. A first stroke hole used for containing the end of the quick-closing valve rod is formed in the position, corresponding to the second stroke hole, of the upper end of the regulating valve core. The lower end of the quick-closing valve rod sequentially penetrates through the quick-closing valve rod mounting hole and the second stroke hole and stretches into the first stroke hole. The upper end of the quick-closing valve rod is connected with a manually operated valve rod located outside the valve body. The quick-closing valve core is located in a steam inlet cavity, and is mounted in the position, corresponding to a quick-closing valve through-flow hole, of the quick-closing valve rod. According to the quick-closing regulating valve, a quick-closing valve and a regulating valve are integrated, so that the quick-closing function and the regulating function are achieved at the same time, and the space occupied by the valve body is decreased.
Description
Technical field
The present invention relates to steam valve field, particularly a kind of speed closes modulating valve.
Background technique
Heat energy in steam and pressure energy can be converted into mechanical energy by steam turbine, thus drive the equipment of rotary mechanism.Steam turbine is widely used on boats and ships, and this steam turbine generally needs to be equipped with a set of suction valve group, and this suction valve group comprises quick-closing valve and servo valve.
When steam inlet valve group need quick closedown and the admission of cut steam turbine engine time, can by close quick-closing valve steam turbine is quit work rapidly; When steam turbine normally runs, steam inlet valve group needs the aperture regulating servo valve according to the feedback signal of the rotating speed of steam turbine, make to be in a rational scope by the steam flow of servo valve, thus ensure that the rotating speed of steam turbine meets working condition requirement.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Because the function of quick-closing valve and servo valve is totally different, so quick-closing valve and servo valve are split-type structural, but, split type quick-closing valve and servo valve can make the size of suction valve group larger, thus cause steam inlet valve group to take volume comparatively large, be unfavorable for the layout of steam turbine in narrow and small cabin space.
Summary of the invention
Occupying the problem of larger space in hull to solve steam inlet valve group in prior art, embodiments providing a kind of speed and closing modulating valve.Described technological scheme is as follows:
Embodiments provide a kind of speed and close modulating valve, comprise bonnet, valve body, bottom flange, valve seat, guide sleeve of adjusting valve, regulating spool, quick-closing valve bar and quick-closing valve core, described bonnet is arranged on the top of described valve body, described bottom flange is arranged on the bottom of described valve body, described valve seat is arranged in described valve body, cavity in described valve body is divided into steam admission chamber and steam steam output chamber by described valve seat, the described steam admission chamber of described valve body offers steam inlet, the described steam steam output chamber of described valve body offers steam (vapor) outlet.
Described guide sleeve of adjusting valve is arranged in the described steam steam output chamber of described valve body, described guide sleeve of adjusting valve is provided with the throttle orifice be communicated with described Vapor outlet, described regulating spool can be arranged in described guide sleeve of adjusting valve up or down, the regulating valve stem extending and pass described bottom flange is provided with bottom described regulating spool, described regulating spool being provided with the modulating valve through flow hole that can be interconnected with described throttle orifice, described valve seat offering the quick-closing valve through flow hole for being communicated with described modulating valve through flow hole and described steam admission chamber.
Described bonnet offers quick-closing valve bar mounting hole, on described valve seat, the position of corresponding described quick-closing valve bar mounting hole is provided with the second stroke hole for the described quick-closing valve bar of interspersed guiding, the position in corresponding described second stroke hole, described regulating spool upper end is provided with the first stroke hole for holding described quick-closing valve rod end head, described quick-closing valve bar lower end is stretched in described first stroke hole through described quick-closing valve bar mounting hole and described second stroke hole successively, described quick-closing valve bar upper end is connected with the manual opening stem be positioned at outside described valve body, described quick-closing valve core is positioned at described steam admission chamber, and described quick-closing valve core is arranged on the position of corresponding described quick-closing valve through flow hole on described quick-closing valve bar.
Regulating valve stem cover is provided with between described bottom flange and described regulating valve stem, described bottom flange offers the first residul discharging port, described regulating valve stem puts the second residul discharging port being provided with and being communicated with described first residul discharging port, described regulating valve stem offers the equalizing orifice that can be communicated with described second residul discharging port, described regulating spool and described regulating valve stem be axially provided with balance channel, described balance channel one end is communicated with described equalizing orifice, and the described balance channel the other end is communicated with described first stroke hole.
Particularly, described valve seat is provided with the first guiding groove matched with the bottom shape of described quick-closing valve core.
Particularly, described speed is closed modulating valve and is also comprised gland nut, and described quick-closing valve bar is provided with boss, and described gland nut is arranged on described boss, and it is outer and be threaded with described gland nut that described quick-closing valve core is arranged on described boss.
Further, described quick-closing valve core offers the steam discharge hole be communicated with the gap between described quick-closing valve core and described quick-closing valve bar.
Particularly, described speed is closed modulating valve and is also comprised oil cylinder and speed pass device, described speed is closed device and is also comprised locking element, supporting post, first elastic member, fixed plate, mobile plate and the second elastic member for resetting, one end of described supporting post is arranged on described bonnet, the other end of described supporting post is arranged on described fixed plate, the cylinder body of described oil cylinder is arranged on described fixed plate, described fixed plate offers manual opening stem mounting hole, described mobile plate and described fixed plate are arranged in parallel, described mobile plate offers manual opening stem tapped hole, the sidewall of described mobile plate is provided with pin, described first elastic member is between described fixed plate and described mobile plate, and the two ends of described first elastic member are arranged on described fixed plate and described mobile plate respectively, described first elastic member is compressive state before described speed closes modulating valve closedown, described manual opening stem is provided with the screw thread with described manual opening stem corresponding threaded holes, described manual opening stem lower end is connected with described quick-closing valve bar upper end by contiguous block with described manual opening stem tapped hole through described manual opening stem mounting hole successively, described locking element is L-type, one end and the described fixed plate of described locking element are hinged, described locking element is provided with the recess matched with described pin, the other end of described locking element and the piston rod clamping of described oil cylinder, the other end of described locking element is also connected with one end of described second elastic member, the other end of described second elastic member is installed on described valve body.
Particularly, described mobile plate offers the second guiding groove, described supporting post is positioned at described second guiding groove.
Further, described quick-closing valve also comprises the locating stud for clamping, the piston rod that described locating stud is fixed on described oil cylinder is stuck on the bottom surface of the other end of described locking element, and the other end of described locking element is by the piston rod clamping of described locating stud and described oil cylinder.
Particularly, described speed pass modulating valve also comprises handwheel and J type manually stops chain, and described handwheel is arranged on described manual opening stem, and the hook end of described manual stopping chain hanging on described handwheel, and the other end of described manual stopping chain being arranged on described fixed plate.
Particularly, described speed pass modulating valve also comprises the quick-closing valve cover for sealing, described quick-closing valve cover is arranged between described bonnet and described quick-closing valve bar, described quick-closing valve cover arranges boss on the end face of described quick-closing valve core, described bonnet is provided with the mounting groove matched with described boss, described boss is arranged in described mounting groove.
Further, described bonnet is provided with the logical steam vent of quick-closing valve cover, the gap between the logical steam vent of described quick-closing valve cover overlaps with described mounting groove and described quick-closing valve is communicated with.
The beneficial effect that the technological scheme that the embodiment of the present invention provides is brought is: the speed that the embodiment of the present invention provides closes modulating valve, quick-closing valve and modulating valve are integrated, there is the function that speed is closed and regulated simultaneously, reduce the space that valve body takies, simultaneously in order to meet the processing request of quick-closing valve bar, need on regulating spool and valve seat, offer the first stroke hole and the second stroke hole that are interconnected respectively, speed is made to close modulating valve when closing, quick-closing valve bar can go deep in the first stroke hole and the second stroke hole, when steam to be entered by steam inlet and is full of steam admission chamber, steam can flow in the first stroke hole by the gap of the second stroke hole and quick-closing valve bar, now, steam can become condensed water and be accumulated in the first stroke hole and the second stroke hole, condensed water accumulation for a long time can cause quick-closing valve bar bite and corrosion, the balance channel of the embodiment of the present invention by being communicated with the first stroke hole in the axially setting of regulating spool, regulating valve stem offers the equalizing orifice be communicated with balance channel, the second residul discharging port be communicated with equalizing orifice offered by regulating valve stem cover, bottom flange offers the first residul discharging port be communicated with the second residul discharging port, the condensed water be accumulated in the first stroke hole and the second stroke hole can pass through balance channel, equalizing orifice, second residul discharging port and the first residul discharging port flow out, thus avoid the accumulation of condensed water, effectively prevent the bite of quick-closing valve bar and the generation of corrosion.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the sectional structure schematic diagram of the speed pass modulating valve that the embodiment of the present invention provides;
Fig. 2 is the main TV structure schematic diagram of the speed pass modulating valve that the embodiment of the present invention provides.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment
Embodiments provide a kind of speed and close modulating valve, be applicable to the steam pipework of steam turbine, this steam turbine can comprise steam turbine, turbo machine, flue gas turbine expander or decompressor etc., as shown in Figure 1, this speed is closed modulating valve and is comprised bonnet 1, valve body 2, bottom flange 3, valve seat 4, guide sleeve of adjusting valve 5, regulating spool 6, quick-closing valve bar 9 and quick-closing valve core 10, composition graphs 2, bonnet 1 is arranged on the top of valve body 2, bottom flange 3 is arranged on the bottom of valve body 1, valve seat 4 is arranged in valve body 2, cavity in valve body 2 is divided into steam admission chamber and steam steam output chamber by valve seat 4, the steam admission chamber of valve body 2 offers steam inlet a, the steam steam output chamber of valve body 2 offers steam (vapor) outlet b, wherein, bonnet 1 can be arranged on the top of valve body 2 by playing screw 1b.The axis of steam inlet a and the axis of steam (vapor) outlet b can be arranged vertically.
Guide sleeve of adjusting valve 5 is arranged in the steam steam output chamber of valve body 2, guide sleeve of adjusting valve 5 is provided with the throttle orifice 5a be communicated with Vapor outlet b, regulating spool 6 can be arranged in guide sleeve of adjusting valve 5 up or down, the regulating valve stem 6b extending and pass bottom flange 3 is provided with bottom regulating spool 6, regulating spool 6 being provided with the modulating valve through flow hole 6a that can be interconnected with throttle orifice 5a, valve seat 4 offering the quick-closing valve opening 4b for connecting modulating valve opening 6a and steam admission chamber.
Bonnet 1 offers quick-closing valve bar mounting hole, on valve seat 4, the position of corresponding quick-closing valve bar mounting hole is provided with the second stroke hole 4a for interspersed guiding quick-closing valve bar 9, the position of the corresponding second stroke hole 4a in regulating spool 6 upper end is provided with the first stroke hole 6e for holding quick-closing valve bar 9 termination, quick-closing valve bar 9 lower end is stretched in the first stroke hole 6e through quick-closing valve bar mounting hole and the second stroke hole 4a successively, and quick-closing valve bar 9 is coaxially arranged with regulating valve stem 6b, quick-closing valve bar 9 upper end is connected with the manual opening stem 8 be positioned at outside valve body 2, quick-closing valve core 10 is positioned at steam admission chamber, and quick-closing valve core 10 is arranged on the position of corresponding quick-closing valve through flow hole 4b on quick-closing valve bar 9.
Be provided with regulating valve stem between bottom flange 3 and regulating valve stem 6b and overlap 7, bottom flange 3 offers the first residul discharging port 3a, regulating valve stem cover 7 is provided with the second residul discharging port 7a be communicated with the first residul discharging port 3a, regulating valve stem 6b offers the equalizing orifice 6c that can be communicated with the second residul discharging port 7a, regulating spool 6 and regulating valve stem 6b axially offer balance channel 6d, one end of balance channel 6d is communicated with equalizing orifice 6c, and the other end of balance channel 6d is communicated with the first stroke hole 6e.Regulating valve stem 6b is connected with the speed regulator of steam turbine through regulating valve stem cover 7, speed regulator can drive the movement position of regulating valve stem 6b according to the change of the rotating speed of steam turbine, thus the flow area changed between regulating spool 6 and throttle orifice 5a, the steam flow flowed out is regulated, and then control the rotating speed of turbine engine, make the rotating speed of turbine engine keep stable within the specific limits.Wherein, throttle orifice 5a can be two rectangular openings.
Valve seat 4 is provided with the second stroke hole 4a be communicated with the first stroke hole 6e, bonnet 1 offers quick-closing valve bar mounting hole, one end of quick-closing valve bar 9 is stretched in the first stroke hole 6e through quick-closing valve bar mounting hole and the second stroke hole 4a, and the axis coaxle of the axis of quick-closing valve bar 9 and regulating valve stem 6b is arranged, quick-closing valve core 10 is positioned at steam admission chamber, and quick-closing valve core 10 is arranged on quick-closing valve bar 9, it is outer and be connected with manual opening stem 8 that the other end of quick-closing valve bar 9 is positioned at valve body 2, valve seat 4 offers the quick-closing valve through flow hole 4b be communicated with steam steam output chamber with modulating valve through flow hole 6a respectively.
Particularly, valve seat 4 is provided with the first guiding groove 4c matched with the bottom shape of quick-closing valve core 10.Arrange the direction that this first guiding groove 4c can make quick-closing valve core 10 can provide along the first guiding groove 4c to move, prevent quick-closing valve core 10 to be shifted.
Particularly, this speed closes modulating valve can also comprise gland nut 10a, and quick-closing valve bar 9 is provided with boss 9a, gland nut 10a is arranged on boss 9a, and it is outer and be threaded with gland nut 10a that quick-closing valve core 10 is arranged on boss 9a.Arrange gland nut 10a quick-closing valve core 10 can be convenient to be arranged on quick-closing valve bar 9, in addition, between gland nut 10a and quick-closing valve core 10, can also fastening screw trip bolt be set, for gland nut 10a is fixed on quick-closing valve core 10 further.
Further, quick-closing valve core 10 offers the steam discharge hole 10b be communicated with the gap between quick-closing valve core 10 and quick-closing valve bar 9.After passing into steam in steam admission chamber, steam is easy to be entered by the gap between gland nut 10a and quick-closing valve core 10, and be condensed into drop, drop is accumulated in gap for a long time, gland nut 10a and quick-closing valve core 10 can be caused to get rusty, impact speed closes the use of modulating valve, the steam between gland nut 10a and quick-closing valve core 10 can be discharged, avoiding gland nut 10a and quick-closing valve core 10 to get rusty by arranging steam discharge hole 10b.
Particularly, this speed is closed modulating valve and is also comprised oil cylinder and speed pass device, speed is closed device and is comprised locking element 16, supporting post 17, first elastic member 19, fixed plate 21, mobile plate 22 and the second elastic member 20 for resetting, one end of supporting post 17 is arranged on bonnet 1, the other end of supporting post 17 is arranged on fixed plate 21, the cylinder body 11 of oil cylinder is arranged on fixed plate 21, fixed plate 21 offers manual opening stem mounting hole, mobile plate 22 and fixed plate 21 are arranged in parallel, mobile plate 22 offers manual opening stem tapped hole, the sidewall of mobile plate 22 is provided with pin 22a, first elastic member 19 is between fixed plate 21 and mobile plate 22, and the two ends of the first elastic member 19 are arranged on fixed plate 21 and mobile plate 22 respectively, first elastic member 19 is compressive state before speed closes modulating valve closedown, manual opening stem 8 is provided with the screw thread with manual opening stem corresponding threaded holes, the lower end of manual opening stem 8 is connected with quick-closing valve bar 9 upper end by contiguous block 18 with manual opening stem tapped hole through manual opening stem mounting hole successively, locking element 16 is L-type, one end and the fixed plate 21 of locking element 16 are hinged, locking element 16 is provided with the recess matched with pin 22a, the other end of locking element 16 and piston rod 13 clamping of oil cylinder, the other end of locking element 16 is also connected with one end of the second elastic member 20, the other end of the second elastic member 20 is installed on valve body 2.Wherein, second elastic member 20 is extended state after speed closes modulating valve closedown, the sidewall of fixed plate 21 is fixed with bearing 21a, one end of locking element 16 is arranged on bearing 21a, namely one end of locking element 16 can be rotated on fixed plate 21 by bearing 21a, locking element 16 can be two, and is arranged in the both sides that speed closes modulating valve, and this other end of locking element 16 is connected by connecting plate.
Particularly, oil cylinder comprises cylinder body 11, piston 12, piston rod 13, second elastic member 14 and is provided with the cylinder cap 15 of oil leak hole 15a, cylinder cap 15 is arranged on cylinder body 11, piston 12 is positioned at cylinder body 11 and the cavity of cylinder body 11 is divided into rodless cavity and rod chamber, one end of piston rod 13 is positioned at rod chamber and is arranged on piston 12, the other end of piston rod 13 stretches out cylinder body 11,3rd elastic member 14 is positioned at rod chamber, and the two ends of the 3rd elastic member 14 are arranged on piston 12 and cylinder body 11 respectively; In addition, cylinder body 11 is positioned on inwall that piston rod 13 stretches out and is provided with an O RunddichtringO, for preventing leakage of oil between piston rod 13 and cylinder body 11.Cylinder cap 15 and cylinder body 11 are also provided with the 2nd O RunddichtringO 15b, for preventing leakage of oil between cylinder cap 15 and cylinder body 11.Cylinder cap 15 is arranged on cylinder body 11 by the first bolt 15c.
Particularly, one end of manual opening stem 8 and one end of quick-closing valve bar 9 are provided with projection, contiguous block 18 are provided with the groove matched with projection, the projection on the projection on manual opening stem 8 and quick-closing valve bar 9 is installed in groove.Contiguous block 18 is set and can ensures that quick-closing valve bar 9 can move up and down along with manual opening stem 8, and together do not rotate with manual opening stem 8, prevent quick-closing valve bar 9 excessive friction, affect the tightness of quick-closing valve.
Particularly, quick-closing valve can also comprise the locating stud 13b for clamping, and the piston rod 13 that locating stud 13b is fixed on oil cylinder is stuck on the bottom surface of the other end of locking element 16, and the other end of locking element 16 is by piston rod 13 clamping of locating stud 13b and oil cylinder.In addition, if the curtailment of piston rod 13, on piston rod 13, pull bar 13a can be installed, one end of pull bar 13a is fixed on piston rod 13, locating stud 13b is fixed on the other end of pull bar 13a, the other end of locking element 16 is arranged on locating stud 13b, locating stud 13b can prevent pull bar 13a and locking element 16 from getting loose, simultaneously, pull bar 13a below locating stud 13b can arrange screw thread, pull bar 13a installs the nut 13c matched with this screw thread, simultaneously, nut 13c is against on locating stud 13b, can fixed locating stud 13b by this nut 13c, locating stud 13b is prevented to be shifted.
Particularly, the elongated distance of the first elastic member 19 is more than or equal to the stroke of quick-closing valve core 10.3rd elastic member 14 is in compressive state when rodless cavity has oil, and the thrust produced of the 3rd elastic member 14 is greater than the pulling force that the second elastic member 20 produces, wherein, first elastic member 19, second elastic member 20 and the 3rd elastic member 14 can be all spring, and spring can one or more.
Simply introduce the working principle that speed closes device below, specific as follows:
As shown in Figure 1, when the emergent stop signal of system is triggered, quick-closing valve is needed to carry out closing motion, now, operating cyloinder makes the charge oil pressure of oil cylinder reduce to zero, piston rod 13 is retracted, and piston rod 13 drives one end of locking element 16 together to move, now, the other end of locking element 16 rotates around the hinge on fixed plate 21, recess and pin 22a depart from, the first elastic member 19 being in compressive state ejects, first elastic member 19 drives mobile plate 22, manual opening stem 8, quick-closing valve bar 9 and quick-closing valve core 10 together move downward, quick-closing valve core 10 is made to be against on quick-closing valve through flow hole 4b, this speed per hour is closed modulating valve and is closed, before quick-closing valve is opened after shutdown, need rotary manual valve rod 8, with the joint place of quick-closing valve core 10 and valve seat 4 for fulcrum, moved upward by mobile plate 22 by the screw thread between mobile plate 22 and manual opening stem 8, first elastic member 19 is compressed again, oil cylinder by oil leak hole 15a in the rodless cavity of cylinder body 11 during oiling, the second elastic member 20 for resetting drives one end of locking element 16 together to move, make locking element 16 return, namely the recess of locking element 16 again snaps into and departs from pin 22a, mobile plate 22 part 16 that is locked is fixed for opening next time.
In other embodiments, this speed closes the speed pass device that device also can be other structures.
Particularly, mobile plate 22 can offer the second guiding groove, supporting post 17 is positioned at the second guiding groove.This second guiding groove can play the effect of guiding, and mobile plate 22 can be made to move up and down along the axial direction of supporting post 17.In other embodiments, can the chute and slide block that match be set on mobile plate 22 and supporting post 17, for realizing leading role.
Particularly, speed pass modulating valve can also comprise handwheel 23 and J type manually stops chain 24, and handwheel 23 is arranged on manual opening stem 8, manually stops the hook end of chain 24 to hang on handwheel 23, manually stops the other end of chain 24 to be arranged on fixed plate 21.Manual stopping chain 24 can hook handwheel 23 when handwheel 23 does not need to rotate, and prevents handwheel 23 from moving.Wherein, the other end of chain 24 is manually stopped can be arranged on fixed plate 21 by hanger screw 24a.
Particularly, speed pass modulating valve can also comprise the quick-closing valve cover 25 for sealing, quick-closing valve cover 25 is arranged between bonnet 1 and quick-closing valve bar 9, quick-closing valve cover 25 arranges boss 25a on the end face of quick-closing valve core 10, bonnet 1 is provided with the mounting groove matched with boss 25a, boss 25a is arranged in mounting groove.Arranging boss 25a can utilize the vapor pressure in steam admission chamber to be pressed in tightly in mounting groove by boss 25a, prevents steam from overlapping 25 by quick-closing valve and spills.
In addition, regulating valve stem cover 7 structure can with quick-closing valve overlap 25 structure identical.
Further, bonnet 1 is provided with the logical steam vent 1a of quick-closing valve cover, the logical steam vent 1a of quick-closing valve cover is communicated with the gap that mounting groove and quick-closing valve overlap between 25.The logical steam vent 1a of quick-closing valve cover closes the environmental communication outside modulating valve with speed, steam between mounting groove and quick-closing valve cover 25 can be discharged by the logical steam vent 1a of this quick-closing valve cover, prevent the steam of mounting groove and quick-closing valve cover 25 from producing condensed water, after condensed water accumulation, cause bonnet 1 and quick-closing valve cover 25 to get rusty.
Particularly, filter screen 26 can be provided with in the steam admission chamber of valve body 2.
The speed that simply introducing the embodiment of the present invention below provides closes the working principle of modulating valve, specific as follows:
When opening speed and closing modulating valve, turn manual opening stem 8, manual opening stem 8 drives quick-closing valve bar 9 to move up, and quick-closing valve bar 9 drives quick-closing valve core 10 to move up, now, steam admission chamber is communicated with quick-closing valve through flow hole 4b, speed pass modulating valve is opened, and steam flows through quick-closing valve through flow hole 4b and modulating valve through flow hole 6a by steam inlet a, regulates the position of regulating valve stem 6b by controlling speed regulator, make steam flow into throttle orifice 5a, and finally flow to steam (vapor) outlet b.
The speed that the embodiment of the present invention provides closes modulating valve, quick-closing valve and modulating valve are integrated, there is the function that speed is closed and regulated simultaneously, reduce the space that valve body takies, simultaneously in order to meet the processing request of quick-closing valve bar, need on regulating spool and valve seat, offer the first stroke hole and the second stroke hole that are interconnected respectively, speed is made to close modulating valve when closing, quick-closing valve bar can go deep in the first stroke hole and the second stroke hole, when steam to be entered by steam inlet and is full of steam admission chamber, steam can flow in the first stroke hole by the gap of the second stroke hole and quick-closing valve bar, now, steam can become condensed water and be accumulated in the first stroke hole and the second stroke hole, condensed water accumulation for a long time can cause quick-closing valve bar bite and corrosion, the balance channel of the embodiment of the present invention by being communicated with the first stroke hole in the axially setting of regulating spool, regulating valve stem offers the equalizing orifice be communicated with balance channel, the second residul discharging port be communicated with equalizing orifice offered by regulating valve stem cover, bottom flange offers the first residul discharging port be communicated with the second residul discharging port, the condensed water be accumulated in the first stroke hole and the second stroke hole can pass through balance channel, equalizing orifice, second residul discharging port and the first residul discharging port flow out, thus avoid the accumulation of condensed water, effectively prevent the bite of quick-closing valve bar and the generation of corrosion.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a speed closes modulating valve, comprise bonnet (1), valve body (2), bottom flange (3), valve seat (4), guide sleeve of adjusting valve (5), regulating spool (6), quick-closing valve bar (9) and quick-closing valve core (10), described bonnet (1) is arranged on the top of described valve body (2), described bottom flange (3) is arranged on the bottom of described valve body (2), described valve seat (4) is arranged in described valve body (2), cavity in described valve body (2) is divided into steam admission chamber and steam steam output chamber by described valve seat (4), the described steam admission chamber of described valve body (2) offers steam inlet (a), the described steam steam output chamber of described valve body (2) offers steam (vapor) outlet (b), it is characterized in that,
Described guide sleeve of adjusting valve (5) is arranged in the described steam steam output chamber of described valve body (2), described guide sleeve of adjusting valve (5) is provided with the throttle orifice (5a) be communicated with described Vapor outlet (b), described regulating spool (6) can be arranged in described guide sleeve of adjusting valve (5) up or down, described regulating spool (6) bottom is provided with the regulating valve stem (6b) that extension passes described bottom flange (3), described regulating spool (6) is provided with the modulating valve through flow hole (6a) that can be interconnected with described throttle orifice (5a), described valve seat (4) offers the quick-closing valve through flow hole (4b) for being communicated with described modulating valve through flow hole (6a) and described steam admission chamber,
Described bonnet (1) offers quick-closing valve bar mounting hole, the position of the upper corresponding described quick-closing valve bar mounting hole of described valve seat (4) is provided with the second stroke hole (4a) for the described quick-closing valve bar (9) of interspersed guiding, the position in corresponding described second stroke hole (4a), described regulating spool (6) upper end is provided with the first stroke hole (6e) for holding described quick-closing valve bar (9) termination, described quick-closing valve bar (9) lower end is stretched in described first stroke hole (6e) through described quick-closing valve bar mounting hole and described second stroke hole (4a) successively, described quick-closing valve bar (9) upper end is connected with and is positioned at described valve body (2) manual opening stem outward (8), described quick-closing valve core (10) is positioned at described steam admission chamber, and described quick-closing valve core (10) is arranged on the position of the upper corresponding described quick-closing valve through flow hole (4b) of described quick-closing valve bar (9),
Regulating valve stem cover (7) is provided with between described bottom flange (3) and described regulating valve stem (6b), described bottom flange (3) offers the first residul discharging port (3a), described regulating valve stem cover (7) is provided with the second residul discharging port (7a) be communicated with described first residul discharging port (3a), described regulating valve stem (6b) offers the equalizing orifice (6c) that can be communicated with described second residul discharging port (7a), described regulating spool (6) and described regulating valve stem (6b) be axially provided with balance channel (6d), described balance channel (6d) one end is communicated with described equalizing orifice (6c), described balance channel (6d) the other end is communicated with described first stroke hole (6e).
2. speed according to claim 1 closes modulating valve, it is characterized in that, described valve seat (4) is provided with the first guiding groove (4c) matched with the bottom shape of described quick-closing valve core (10).
3. speed according to claim 1 closes modulating valve, it is characterized in that, described speed is closed modulating valve and is also comprised gland nut (10a), described quick-closing valve bar (9) is provided with boss (9a), described gland nut (10a) is arranged on described boss (9a), and described quick-closing valve core (10) is arranged on described boss (9a) and be threaded with described gland nut (10a) outward.
4. speed according to claim 3 closes modulating valve, it is characterized in that, described quick-closing valve core (10) offers the steam discharge hole (10b) be communicated with the gap between described quick-closing valve core (10) and described quick-closing valve bar (9).
5. speed according to claim 1 closes modulating valve, it is characterized in that, described speed is closed modulating valve and is also comprised oil cylinder and speed pass device, described speed is closed device and is comprised locking element (16), supporting post (17), first elastic member (19), fixed plate (21), mobile plate (22) and the second elastic member (20) for resetting, one end of described supporting post (17) is arranged on described bonnet (1), the other end of described supporting post (17) is arranged on described fixed plate (21), the cylinder body (11) of described oil cylinder is arranged on described fixed plate (21), (21) offer manual opening stem mounting hole with described fixed plate, described mobile plate (22) and described fixed plate (21) are arranged in parallel, (22) offer manual opening stem tapped hole to described mobile plate, the sidewall of described mobile plate (22) is provided with pin (22a), described first elastic member (19) is positioned between described fixed plate (21) and described mobile plate (22), and the two ends of described first elastic member (19) are arranged on described fixed plate (21) and described mobile plate (22) respectively, described first elastic member (19) is compressive state before described speed closes modulating valve closedown, described manual opening stem (8) is provided with the screw thread with described manual opening stem corresponding threaded holes, described manual opening stem (8) lower end is connected with described quick-closing valve bar (9) upper end by contiguous block (18) with after described manual opening stem tapped hole through described manual opening stem mounting hole successively, described locking element (16) is L-type, one end and the described fixed plate (21) of described locking element (16) are hinged, described locking element (16) is provided with the recess matched with described pin (22a), the other end of described locking element (16) and piston rod (13) clamping of described oil cylinder, the other end of described locking element (16) is also connected with one end of described second elastic member (20), the other end of described second elastic member (20) is installed on described valve body (2).
6. speed according to claim 5 closes modulating valve, and it is characterized in that, (22) offer the second guiding groove to described mobile plate, and described supporting post (17) is positioned at described second guiding groove.
7. speed according to claim 5 closes modulating valve, it is characterized in that, described quick-closing valve also comprises the locating stud (13b) for clamping, the piston rod (13) that described locating stud (13b) is fixed on described oil cylinder is gone up and is stuck on the bottom surface of the other end of described locking element (16), and the other end of described locking element (16) is by piston rod (13) clamping of described locating stud (13b) with described oil cylinder.
8. speed according to claim 1 closes modulating valve, it is characterized in that, described speed pass modulating valve also comprises handwheel (23) and J type manually stops chain (24), described handwheel (23) is arranged on described manual opening stem (8), the hook end of described manual stopping chain (24) hangs on described handwheel (23), and the other end of described manual stopping chain (24) is arranged on described fixed plate (21).
9. speed according to claim 1 closes modulating valve, it is characterized in that, described speed pass modulating valve also comprises the quick-closing valve cover (25) for sealing, described quick-closing valve cover (25) is arranged between described bonnet (1) and described quick-closing valve bar (9), described quick-closing valve cover (25) arranges boss (25a) on the end face of described quick-closing valve core (10), described bonnet (1) is provided with the mounting groove matched with described boss (25a), described boss (25a) is arranged in described mounting groove.
10. speed according to claim 9 closes modulating valve, it is characterized in that, described bonnet (1) is provided with the logical steam vent (1a) of quick-closing valve cover, the logical steam vent (1a) of described quick-closing valve cover is communicated with the gap between described mounting groove and described quick-closing valve cover (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510510401.6A CN105065696B (en) | 2015-08-19 | 2015-08-19 | A kind of speed closes regulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510510401.6A CN105065696B (en) | 2015-08-19 | 2015-08-19 | A kind of speed closes regulating valve |
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| CN105065696A true CN105065696A (en) | 2015-11-18 |
| CN105065696B CN105065696B (en) | 2017-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510510401.6A Active CN105065696B (en) | 2015-08-19 | 2015-08-19 | A kind of speed closes regulating valve |
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| Country | Link |
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| CN (1) | CN105065696B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443791A (en) * | 2015-12-10 | 2016-03-30 | 武汉船用机械有限责任公司 | Steam adjustment valve |
| CN105464721A (en) * | 2015-12-14 | 2016-04-06 | 武汉船用机械有限责任公司 | Rotating speed control device for turbine |
| CN106641411A (en) * | 2016-11-07 | 2017-05-10 | 武汉船用机械有限责任公司 | Quick-closing valve |
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| JPS5983872A (en) * | 1982-11-05 | 1984-05-15 | Toshiba Corp | Steam valve |
| CN201348051Y (en) * | 2008-12-26 | 2009-11-18 | 施大钟 | Angle valve |
| CN202228740U (en) * | 2011-08-10 | 2012-05-23 | 天正阀门有限公司 | Corrosion-resistant safety valve |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202612662U (en) * | 2012-02-21 | 2012-12-19 | 浙江德卡控制阀仪表有限公司 | High-temperature single-seated valve |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5983872A (en) * | 1982-11-05 | 1984-05-15 | Toshiba Corp | Steam valve |
| CN201348051Y (en) * | 2008-12-26 | 2009-11-18 | 施大钟 | Angle valve |
| CN202228740U (en) * | 2011-08-10 | 2012-05-23 | 天正阀门有限公司 | Corrosion-resistant safety valve |
| CN202302083U (en) * | 2011-10-18 | 2012-07-04 | 天津国际机械有限公司 | Hydraulic three-way stop valve |
| CN202612662U (en) * | 2012-02-21 | 2012-12-19 | 浙江德卡控制阀仪表有限公司 | High-temperature single-seated valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443791A (en) * | 2015-12-10 | 2016-03-30 | 武汉船用机械有限责任公司 | Steam adjustment valve |
| CN105443791B (en) * | 2015-12-10 | 2018-07-31 | 武汉船用机械有限责任公司 | A kind of steam control valve |
| CN105464721A (en) * | 2015-12-14 | 2016-04-06 | 武汉船用机械有限责任公司 | Rotating speed control device for turbine |
| CN105464721B (en) * | 2015-12-14 | 2017-05-10 | 武汉船用机械有限责任公司 | Rotating speed control device for turbine |
| CN106641411A (en) * | 2016-11-07 | 2017-05-10 | 武汉船用机械有限责任公司 | Quick-closing valve |
| CN106641411B (en) * | 2016-11-07 | 2019-02-05 | 武汉船用机械有限责任公司 | Quick-closing valve |
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|---|---|
| CN105065696B (en) | 2017-09-19 |
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