CN110500417A - Quick-closing valve and its spool - Google Patents
Quick-closing valve and its spool Download PDFInfo
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- CN110500417A CN110500417A CN201910899654.5A CN201910899654A CN110500417A CN 110500417 A CN110500417 A CN 110500417A CN 201910899654 A CN201910899654 A CN 201910899654A CN 110500417 A CN110500417 A CN 110500417A
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- valve
- valve disc
- valve rod
- disc
- sleeve
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- 238000009826 distribution Methods 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010003591 Ataxia Diseases 0.000 description 1
- 206010010947 Coordination abnormal Diseases 0.000 description 1
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- 244000131316 Panax pseudoginseng Species 0.000 description 1
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- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
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- 230000008901 benefit Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 208000016290 incoordination Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- 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
-
- 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
- F16K1/48—Attaching valve members to screw-spindles
-
- 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
- F16K1/50—Preventing rotation of 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
- F16K47/06—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member with a throttle in the form of a helical channel
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of quick-closing valve and its spool, the spool includes: a valve disc, is open column shape structure, and one end is provided with end face, and the other end is open state；One sleeve is sheathed on outside the valve disc, and one end far from valve disc end face is used to be fixed on the shell of quick-closing valve；The valve disc can be moved left and right along the axial direction of the sleeve, and when axial movement of the valve disc along the sleeve, the major part of the valve disc axial direction is always in the sleeve.The present invention uses hollow valve core structure, the harmony of the distribution of quick-closing valve gravity is improved, to reduce influence of the exciting of high steam to valve body stability.
Description
Technical field
The present invention relates to a kind of components of valve, in particular to the speed of a kind of spool and the application spool is closed
Valve.
Background technique
Quick-closing valve is widely used in the high speed rotations turbomachinery such as steam turbine, is between major steam line and steam turbine
Main switching mechanism.Steam turbine air inlet is usually high parameter steam, and the high flow rate of this high parameter steam can generate punching to spool
It hits, and when flowing through the Anomalistic space inside quick-closing valve, easily causes to agitate, can not only reduce the stability of valve body, and
It can accelerate the damage of spool.Therefore, in emergency situations, need to cut off immediately steam turbine into vapour, make unit quick shutdown, with
Achieve the purpose that protect unit；Quick-closing valve is quickly to cut off the main switching on and shutting down of high parameter gas source as in case of emergency
Structure is the necessary component in protective device.
Conventional spool is solid construction, and valve rod is slim-lined construction, and the gravity that this allows for quick-closing valve spool one end is bright
Aobvious to be greater than the gravity for driving end, the incoordination on this gravity can aggravate exciting under the impact of high steam, reduce speed and close
The safety coefficient of valve.
Based on the above issues, the Chinese patent of publication number 202280482U discloses a kind of Quick closing valve for steam turbine, which closes
Valve in opening process or quick-closing valve close after gap of some steam between valve rod and sleeve and bushing to outward leakage,
Gas is drawn from the gap；After quick-closing valve standard-sized sheet, the sealing surface of main valve dish and sleeve is fitted closely, and valve rod gas leakage is blocked.
The structure can reduce the opening force of entire quick-closing valve to a certain extent, to reduce the size of valve rod or driving part, mention
Safety in high quick-closing valve opening process, but not can solve exciting inside quick-closing valve caused by high steam impacts, therefore,
It can not fundamentally solve the problems, such as exciting, in quick-closing valve use process, still have larger security risk.
Summary of the invention
In order to solve the above-mentioned technical problem, the first object of the present invention is to provide a kind of spool of quick-closing valve, which adopts
With hollow structure, the harmony of the distribution of quick-closing valve gravity is improved, reduces the probability that exciting generates；And addition guide's off-load is logical
Road advantageously reduces opening force when valve disc is separated with valve seat.
The second object of the present invention is to provide a kind of quick-closing valve, which includes above-mentioned spool.
Based on above-mentioned purpose, one aspect of the present invention provides a kind of spool of quick-closing valve, which includes:
One valve disc, the valve disc have an internal cavities, which penetrates through the right end of valve disc, the left end of the valve disc
Portion is provided with one for being connected to the first stomata of valve disc outwardly and inwardly cavity；
One valve rod, from the internal cavities of the right side of valve disc insertion valve disc, the head of valve rod is flexibly connected with valve disc and energy
It is enough to block up cooperation with first stomata pressure, it is arranged with the first spring on valve rod, one end of the first spring is connect with valve disc, the first bullet
The other end of spring is connect with valve rod, which assigns the head of valve rod far from the trend of the first stomata, when the head of valve rod
When pressing stifled cooperation with the first stomata, the connection of the first stomata Yu valve disc internal cavities can be blocked；
One sleeve is sheathed on outside the valve disc, and the right end of the sleeve is used to be fixed on the shell of quick-closing valve, described
Valve disc stretches out the left end of sleeve and can move left and right along the axial direction of the sleeve, when the valve disc is along the axial movement of the sleeve
When, at least part of the valve disc is in always in the sleeve；
Wherein, the periphery wall of the valve disc is equipped with the airflow channel for being connected to valve disc outwardly and inwardly cavity, or
The periphery wall of sleeve is equipped with for being connected to valve disc outwardly and inwardly at the cooperation of the airflow channel of cavity or valve disc and sleeve
Equipped with the airflow channel for being connected to valve disc outwardly and inwardly cavity.
Preferably, being threaded with valve rod base on the valve disc, it is provided with one on the valve rod base and leads to for what valve rod passed through
Hole, the head of valve rod are arranged in the clearance space between valve disc and valve rod base, and the head outer diameter of valve rod is greater than the through-hole
Aperture；One end of first spring offsets with valve rod base, and the other end and the valve rod of the first spring offset.In this way, structure is simple
Rationally, easy to assembly, not only facilitate the active force of the first spring of adjustment, but also valve rod and valve disc are forced together, in quick-closing valve
In operation, guarantee that the two will not generate vibration and rotation because of the impact of air-flow.
Preferably, a retaining ring is fixedly installed on the valve rod base, between the retaining ring and the valve rod base described in setting
First spring.
Preferably, being additionally provided with spring base between first spring and the retaining ring, spring socket sleeve is located on valve rod.
Preferably, being additionally provided with several second stomatas on the valve rod base, it is left which is connected to the valve rod base
On the right side of side and valve rod base.
Preferably, the valve disc outer wall is provided with helicla flute, the helicla flute and sleeve cooperation constitute the air-flow
Channel.
Preferably, the valve disc is provided with strainer close to one end of valve seat.
Preferably, the strainer is connected and fixed by rolling with valve disc.
Preferably, being fixedly installed anti-rotation member on the valve disc periphery wall, it is provided on the sleeve lining along axis
To the stroke groove of extension, the anti-rotation member is installed in the stroke groove, can be with the change in location of valve disc in the stroke groove
Inside slide axially, thus valve disc can only relative sleeve move axially, and be unable to relative sleeve and circumferentially rotated.
Another aspect of the present invention provides a kind of quick-closing valve, which includes spool as described above.
Compared with prior art, the invention has the benefit that
1) present invention uses hollow valve core structure, the harmony of the distribution of quick-closing valve gravity is improved, to reduce height
Press influence of the exciting of steam to valve body stability；
2) guide's off-load access is added, the pressure difference between steam inlet and steam (vapor) outlet is reduced, reduces valve disc and valve seat
Opening force when separating so as to reduce the size of valve rod driving mechanism, and then reduces the overall dimensions of quick-closing valve.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the restriction to the application for explaining the application.
Fig. 1 is the structural schematic diagram that middling speed of the embodiment of the present invention closes valve system shutdown status；
Fig. 2 is the structural schematic diagram that middling speed of the embodiment of the present invention closes valve system guide open state；
Fig. 3 is the structural schematic diagram that middling speed of the embodiment of the present invention closes valve system operating status.
Wherein, 100, quick-closing valve；200, hydraulic drive mechanism；
11, shell；12, valve disc；13, sleeve；14, valve rod；15, valve seat；
121, valve rod base；122, strainer；123, the first stomata；124, anti-rotation member；141, retaining ring；142, the first spring；
143, spring base；
21, hydraulic cylinder；22, the first valve；23, the second valve；24, throttle valve；25, oil sources；26, drain mast；
211, piston；212, second spring.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In addition, in the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ",
" width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with spy
Fixed orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two, unless otherwise restricted clearly.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
The present embodiment provides a kind of spools of quick-closing valve, as shown in Figure 1-3, the spool includes:
One valve disc 12, the valve disc 12 have an internal cavities, which penetrates through the right end of valve disc 12, the valve disc
12 left part is provided with one for being connected to the first stomata 123 of the outwardly and inwardly cavity of valve disc 12；
One valve rod 14, from the internal cavities of the right side of valve disc 12 insertion valve disc 12, the head of valve rod 14 and valve disc 12 are living
Dynamic connection simultaneously can press stifled cooperation with first stomata 123, be arranged with the first spring 142 on valve rod 14, the first spring 142
One end is connect with valve disc 12, and the other end of the first spring 142 is connect with valve rod 14, which assigns the head of valve rod 14
Trend of the portion far from the first stomata 123 can block the first gas when the cooperation stifled with the first stomata 123 pressure of the head of valve rod 14
The connection in hole 123 and 12 internal cavities of valve disc；
One sleeve 13 is sheathed on outside the valve disc 12, and the right end of the sleeve 13 is used to be fixed on the outer of quick-closing valve 100
On shell 11, the valve disc 12 stretches out the left end of sleeve 13 and can move left and right along the axial direction of the sleeve 13, when the valve disc 12
When along the axial movement of the sleeve 13, at least part of the valve disc 12 is in always in the sleeve 13；
Wherein, the periphery wall of the valve disc 12 is equipped with the airflow channel for being connected to the outwardly and inwardly cavity of valve disc 12,
Perhaps the periphery wall of sleeve 13 is equipped with for being connected to the valve disc 12 outwardly and inwardly airflow channel of cavity or valve disc 12 and set
The airflow channel for being connected to the outwardly and inwardly cavity of valve disc 12 is equipped at the cooperation of cylinder 13.
Embodiment as one preferred is threaded with valve rod base 121 on the valve disc 12, on the valve rod base 121
It is provided with a through-hole passed through for valve rod 14, the clearance space between valve disc 12 and valve rod base 121 is arranged in the head of valve rod 14
Interior, the head outer diameter of valve rod 14 is greater than the aperture of the through-hole；The length of clearance space between valve disc 12 and valve rod base 121 is
For s sections in the thickness and Fig. 1 on 14 head of valve rod of the sum of length；
One end of first spring 142 offsets with valve rod base 121, and the other end and the valve rod 14 of the first spring 142 offset.
It is easy to assembly in this way, simple and reasonable, not only facilitate the active force of the first spring 142 of adjustment, but also by valve rod 14 and valve disc
12 force together, and in the operation of quick-closing valve 100, guarantee that the two will not generate vibration and rotation because of the impact of air-flow.
During valve rod 14 moves left and right, part of it stroke (see s sections in Fig. 1) can be moved relative to the valve disc 12
Dynamic, when especially moving right valve rod 14 is since left-most position, valve rod 14 moves right to be separated with the first stomata 123, the
It is connected to form guide's off-load access inside one stomata 123 and the valve disc 12, the steam in valve disc 12 can be from guide's off-load
Access discharge, to can carry out guide before valve disc 12 is separated with valve seat 15 to high steam by guide's off-load access and unload
Lotus reduces resistance when valve disc 12 is separated with valve seat 15, in this way, the size of driving mechanism (such as following hydraulic cylinders 21) can be reduced,
To reduce the size of entire quick-closing valve system；That is the presence of idle stroke S, when guaranteeing that valve disc 12 is opened, because steam flow channel
It communicates, plays the role of guide's off-load, reduce opening force, to reduce the size for executing oil cylinder.Valve rod 14 moves left and right process
In another part stroke valve disc 12 can be driven to move together, to realize separating or fastening for valve disc 12 and valve seat 15.
Embodiment as one preferred is fixedly installed a retaining ring 141 on the valve rod base 121, the retaining ring 141 with
First spring 142 is set between the valve rod base 121.
Embodiment as one preferred is additionally provided with spring base between first spring 142 and the retaining ring 141
143, spring base 143 is set on valve rod 14.
Embodiment as one preferred, 12 outer wall of valve disc are provided with helicla flute, the helicla flute and the sleeve
13 cooperations constitute helical airflow passages.Air-flow can reduce the impact force to butterfly valve along the helical airflow passages flow process, drop
The possibility that low exciting occurs；Meanwhile helicla flute design can reduce the parameter from steam inlet steam, reduce driving mechanism to valve
The opening force or closing force of dish 12.
Embodiment as one preferred is additionally provided with several second stomatas on the valve rod base 121, second stomata
It is connected to 121 left side of valve rod base and 121 right side of valve rod base, thus when the valve rod 14 is mobile relative to the valve disc 12, institute
Helical airflow passages are stated to be connected to first stomata 123；Preferably, the valve rod base 121 can also be engraved structure etc., only
It is wanted to can guarantee that the air-flow of 12 internal valve pole socket of valve disc, 121 left and right sides is connected.
Embodiment as one preferred, the valve disc 12 is provided with strainer 122 close to one end of valve seat 15, to keep away
Exempt from there is particulate matter to enter steam (vapor) outlet with steam under guide's open state as shown in Figure 2, to avoid biggish particle
Sundries enters Turbine Flow Path with high velocity vapor impact, and the blade and tune valve sealing surface to flow passage component damage.
Embodiment as one preferred, the strainer 122 are connected and fixed by rolling with valve disc 12.
Embodiment as one preferred is fixedly installed anti-rotation member 124, the set on 12 periphery wall of valve disc
It is provided with the stroke groove axially extended on 13 inner walls of cylinder, the anti-rotation member 124 is installed in the stroke groove, can be with valve disc
12 change in location slides axially in the stroke groove, thus valve disc 12 can only relative sleeve 13 move axially, and
Relative sleeve 13 is unable to be circumferentially rotated.In this way, it is ensured that valve disc 12 will not ceaselessly be rotated because of the impact of steam, favorably
In reduction abrasion, increase safety.
Based on above-mentioned valve core structure, the present embodiment also provides a kind of quick-closing valve 100, as shown in Figure 1-3, include shell 11,
Valve seat 15, spool and valve rod 14, the shell 11 include steam inlet and steam (vapor) outlet, and the valve seat 15 is set to steam (vapor) outlet
Place and be connected to steam (vapor) outlet, the spool be set in the shell 11 and with 15 face of valve seat, the valve rod 14
One end is connect with the spool, and the other end is connect after running through the shell 11 with the hydraulic drive mechanism 200；When the valve rod
14 when moving along its axis, and the spool is driven to move together, so that spool is separated or press stifled cooperation with valve seat 15, to realize steaming
Connection or blocking between vapour entrance and steam (vapor) outlet；
The spool includes the valve disc 12 of an open column shape structure, and the left part of the valve disc 12 and valve seat 15 cooperate, valve
Dish 12 has an internal cavities；
One is provided on the valve disc 12 for being connected to the first stomata 123 of 12 internal cavities of steam (vapor) outlet and valve disc, institute
The head for stating valve rod 14 is flexibly connected with valve disc 12 and can press with first stomata 123 stifled cooperation, is arranged on valve rod 14
One end of first spring 142, the first spring 142 is connect with valve disc 12, and the other end of the first spring 142 is connect with valve rod 14, should
First spring 142 assigns head and first stomata 123 of the head of valve rod 14 far from the trend of the first stomata 123, when valve rod 14
Pressure blocks up the connection that the first stomata 123 and 12 internal cavities of valve disc can be blocked when cooperation；
It is arranged with a set of cylinder 13 outside the valve disc 12, the sleeve 13 is fixed on 11 inner wall of shell far from one end of valve seat 15
On, when axial movement of the valve disc 12 along the sleeve 13, at least part of the valve disc 12 is in the set always
In cylinder 13；
The valve disc 12 or sleeve 13 are equipped with the airflow channel for being connected to 12 internal cavities of steam inlet and valve disc.
Embodiment as one preferred is threaded with valve rod base 121 on the valve disc 12, on the valve rod base 121
It is provided with a through-hole passed through for valve rod 14, the clearance space between valve disc 12 and valve rod base 121 is arranged in the head of valve rod 14
Interior, the head outer diameter of valve rod 14 is greater than the aperture of the through-hole；One end of first spring 142 offsets with valve rod base 121, the
The other end of one spring 142 offsets with valve rod 14.In this way, it is simple and reasonable, it is easy to assembly, not only facilitate the first spring of adjustment
142 active force, and valve rod 14 and valve disc 12 are forced together, in the operation of quick-closing valve 100, guarantee that the two will not be because of air-flow
Impact and generate vibration and rotation, it may be assumed that after the power that driving stem 14 is moved to the left overcomes the elastic force of first spring 142
The valve rod 14 could be driven to be moved to the left, making the connection of valve disc 12 and valve rod 14, there are preload pressures, and valve disc is alleviated or avoided
12 and valve rod 14 vibration, so that the exciting of high steam be avoided to generate shadow to the leakproofness of valve disc 12 and 15 junction of valve seat
It rings.
Embodiment as one preferred is fixedly installed a retaining ring 141 on the valve rod base 121, the retaining ring 141 with
First spring 142 is set between the valve rod base 121.
Embodiment as one preferred is additionally provided with spring base between first spring 142 and the retaining ring 141
143, spring base 143 is set on valve rod 14.
Embodiment as one preferred, 12 outer wall of valve disc are provided with helicla flute, the helicla flute and the sleeve
13 cooperations constitute helical airflow passages, the connects with the internal cavities of the helical airflow passages and valve disc 12；It is also set up on valve rod base 121
There are several second stomatas, which is connected to 121 left side of valve rod base and 121 right side of valve rod base, to work as the valve rod
When the first stomata 123 of valve disc 12 is left on 14 head, steam inlet is via the airflow channel, the second stomata and the first stomata
123 connections.In this way, simple and reasonable, significant effect, is arranged helicla flute, not only steam inlet can be reduced with cuisine steam stream
The parameter of steam reduces the power of unlatching, and particulate matter can be avoided to enter steam with air-flow and gone out during guide's off-load
Mouthful.Preferably, the valve rod base 121 can also be engraved structure etc., as long as it can guarantee 12 internal valve pole socket of valve disc, 121 left and right sides
Air-flow be connected.
Embodiment as one preferred, the valve disc 12 are provided with strainer 122 close to one end of valve seat 15.The strainer
122 cooperate with the helicla flute, during guide's off-load, particulate matter are avoided to enter steam (vapor) outlet with air-flow.
Embodiment as one preferred is additionally provided with anti-rotation member 124, the sleeve 13 on 12 outer wall of valve disc
The stroke groove axially extended is provided on inner wall, the anti-rotation member 124 is installed in the stroke groove, can be with valve disc 12
Change in location slides axially in the stroke groove, thus valve disc 12 can only relative sleeve 13 move axially, and cannot
Relative sleeve 13 is circumferentially rotated.
Based on the structure of above-mentioned quick-closing valve 100, the present embodiment also provides a kind of quick-closing valve system, which includes quick-closing valve
100 and its hydraulic drive mechanism 200；
The quick-closing valve 100 include shell 11, valve seat 15, spool and valve rod 14, the shell 11 include steam inlet and
Steam (vapor) outlet, the valve seat 15 are set to steam outlet and are connected to steam (vapor) outlet, and the spool is set to the shell 11
It is interior and with 15 face of valve seat, one end of the valve rod 14 connect with the spool, the other end run through after the shell 11 with
The hydraulic drive mechanism 200 connects；When the valve rod 14 moves along its axis, drives the spool to move together, make valve
Core separates or presses stifled cooperation with valve seat 15, to realize the connection or blocking between steam inlet and steam (vapor) outlet；
The spool includes the valve disc 12 of an open column shape structure, and the left part of the valve disc 12 and valve seat 15 cooperate, valve
Dish 12 has an internal cavities；
One is provided on the valve disc 12 for being connected to the first stomata 123 of 12 internal cavities of steam (vapor) outlet and valve disc, institute
The head for stating valve rod 14 is flexibly connected with valve disc 12 and can press with first stomata 123 stifled cooperation, is arranged on valve rod 14
One end of first spring 142, the first spring 142 is connect with valve disc 12, and the other end of the first spring 142 is connect with valve rod 14, should
First spring 142 assigns head and first stomata 123 of the head of valve rod 14 far from the trend of the first stomata 123, when valve rod 14
Pressure blocks up the connection that the first stomata 123 and 12 internal cavities of valve disc can be blocked when cooperation；
It is arranged with a set of cylinder 13 outside the valve disc 12, the sleeve 13 is fixed on 11 inner wall of shell far from one end of valve seat 15
On, when axial movement of the valve disc 12 along the sleeve 13, at least part of the valve disc 12 is in the set always
In cylinder 13；
The valve disc 12 or sleeve 13 are equipped with the airflow channel for being connected to 12 internal cavities of steam inlet and valve disc；
The hydraulic drive mechanism 200 includes hydraulic cylinder 21, the first valve 22, the second valve 23, second spring 212 and oil
Case, the hydraulic cylinder 21 is interior to be arranged piston 211, and the left side of the piston 211 is connect with the valve rod 14, the piston 211
Right side connect by second spring 212 with the hydraulic cylinder 21, and the hydraulic cylinder 21 is located at the part on the left of piston 211 and is arranged the
The second oil circuit is arranged in one oil circuit, the part positioned at 211 right side of piston, and first valve 22 is set on the first oil circuit, described
Second valve 23 is set on the second oil circuit；
Under shutdown status, the first valve 22 and the second valve 23 are turned off pressure release, and piston 211 is in second spring 212
The lower band ovable valve stem 14 of effect moves to left in place, valve disc 12 and the stifled cooperation of the pressure of valve seat 15, the head of valve rod 14 and the first gas of valve disc 12
The stifled cooperation of the pressure of hole 123, steam inlet is not connected to steam (vapor) outlet；
When starting, the first valve 22 is first opened, and starting oil enters the first oil circuit, and then the second valve 23 is opened, and speed closes oil
Into the second oil circuit and piston 211 is driven to move to right compression second spring 212, and piston 211 is moved to right with ovable valve stem 14, valve disc 12
Stifled cooperation is still pressed with valve seat 15 under the action of the first spring 142, guide's stroke is opened, and valve disc 12 is left on the head of valve rod 14
First stomata 123, the steam of small flow is from steam inlet via airflow channel, the valve disc 12 on the valve disc 12 or sleeve 13
Internal cavities, the first stomata 123 and valve seat 15 are connected to steam (vapor) outlet to realize guide's off-load；Piston 211 and valve rod 14 after
Continuous to move to right, valve rod 14 drives valve disc 12 to move to right so that valve disc 12 is separated with valve seat 15, and steam inlet is directly connected to steam (vapor) outlet.
After the direct communicating passage of steam inlet and steam (vapor) outlet fully opens, the first valve 22, the first oil circuit are closed
Pressure release.In this way, the second oil circuit pressure release, valve rod 14 moves to left under the action of second spring 212 when system trigger speed closes condition,
Valve disc 12 moves to left under the drive of valve rod 14, and when valve disc 12 and the pressure of valve seat 15 block up after cooperation, the first spring 142 compresses, valve rod 14
Head block the first stomata 123.Quick-closing valve is closed using spring force, impact is small, system is reliable and stable.
Embodiment as one preferred further includes oil sources 25, and the oil sources 25 passes through first valve 22 and institute
It states the first oil circuit to be connected, the oil sources 25 is connected by the second valve 23 with the second oil circuit.
Embodiment as one preferred, the oil sources 25 are connect logical with first valve 22 and the second valve 23
Road is provided with throttle valve 24.
Embodiment as one preferred is also connected with drain mast 26 on the hydraulic cylinder 21.
Embodiment as one preferred is threaded with valve rod base 121 on the valve disc 12, on the valve rod base 121
It is provided with a through-hole passed through for valve rod 14, the clearance space between valve disc 12 and valve rod base 121 is arranged in the head of valve rod 14
Interior, the head outer diameter of valve rod 14 is greater than the aperture of the through-hole；One end of first spring 142 offsets with valve rod base 121, the
The other end of one spring 142 offsets with valve rod 14.In this way, it is simple and reasonable, it is easy to assembly, not only facilitate the first spring of adjustment
142 active force, and valve rod 14 and valve disc 12 are forced together, in the operation of quick-closing valve 100, guarantee that the two will not be because of air-flow
Impact and generate vibration and rotation.
Embodiment as one preferred is fixedly installed a retaining ring 141 on the valve rod base 121, the retaining ring 141 with
First spring 142 is set between the valve rod base 121, and the coefficient of elasticity of first spring 142 is less than second spring 212
Coefficient of elasticity.
Embodiment as one preferred, 12 outer wall of valve disc are provided with helicla flute, the helicla flute and the sleeve
13 cooperations constitute airflow channel, the connects with the internal cavities of the airflow channel and valve disc 12；Several are additionally provided on valve rod base 121
Two stomatas, which is connected to 121 left side of valve rod base and 121 right side of valve rod base, to work as the head of the valve rod 14
When leaving the first stomata 123 of valve disc 12, steam inlet is connected to via the airflow channel, the second stomata with the first stomata 123.
In this way, simple and reasonable, significant effect, is arranged helicla flute, the ginseng of steam inlet steam can be not only reduced with cuisine steam stream
Number, reduces the power of unlatching, and particulate matter can be avoided to enter steam (vapor) outlet with air-flow during guide's off-load.
Embodiment as one preferred, the valve disc 12 are provided with strainer 122 close to one end of valve seat 15.The strainer
122 cooperate with the helicla flute, during guide's off-load, particulate matter are avoided to enter steam (vapor) outlet with air-flow.
Embodiment as one preferred is additionally provided with anti-rotation member 124, the sleeve 13 on 12 outer wall of valve disc
The stroke groove axially extended is provided on inner wall, the anti-rotation member 124 is installed in the stroke groove, can be with valve disc 12
Change in location slides axially in the stroke groove, thus valve disc 12 can only relative sleeve 13 move axially, and cannot
Relative sleeve 13 is circumferentially rotated.
To sum up, the present invention uses hollow valve core structure, the harmony of the distribution of quick-closing valve gravity is improved, to reduce
Influence of the exciting of high steam to valve body stability；Guide's off-load access is added, is reduced between steam inlet and steam (vapor) outlet
Pressure difference, reduce opening force of valve disc when separating with valve seat, so as to reduce the size of valve rod driving mechanism, and then reduction is fast
Close the overall dimensions of valve.
In addition, it should be noted that:
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention, it is all according to this hair
Bright technical spirit any simple modification, equivalent change and modification to the above embodiments, still fall within the technology of the present invention
In the range of scheme.
Claims (10)
1. a kind of spool of quick-closing valve characterized by comprising
One valve disc (12), the valve disc (12) have an internal cavities, which penetrates through the right end of valve disc (12), the valve
The left part of dish (12) is provided with one for being connected to the first stomata (123) of valve disc (12) outwardly and inwardly cavity；
One valve rod (14), from the internal cavities of the right side of valve disc (12) insertion valve disc (12), the head of valve rod (14) and valve disc
(12) it is flexibly connected and can be pressed with first stomata (123) stifled cooperation, is arranged with the first spring (142) on valve rod (14),
One end of first spring (142) is connect with valve disc (12), and the other end of the first spring (142) is connect with valve rod (14), this first
Spring (142) assigns the trend of the head far from the first stomata (123) of valve rod (14), head and the first stomata when valve rod (14)
(123) when pressure blocks up cooperation, the connection of the first stomata (123) Yu valve disc (12) internal cavities can be blocked；
One sleeve (13) is sheathed on the valve disc (12) outside, and the right end of the sleeve (13) is for being fixed on quick-closing valve (100)
Shell (11) on, the left end that the valve disc (12) stretches out sleeve (13) can simultaneously be moved left and right along the axial direction of the sleeve (13),
When axial movement of the valve disc (12) along the sleeve (13), at least part of the valve disc (12) is in described always
In sleeve (13)；
Wherein, the periphery wall of the valve disc (12) is equipped with the airflow channel for being connected to valve disc (12) outwardly and inwardly cavity,
Perhaps the periphery wall of sleeve (13) is equipped with airflow channel or valve disc for being connected to valve disc (12) outwardly and inwardly cavity
(12) with the airflow channel for being connected to valve disc (12) outwardly and inwardly cavity is equipped at the cooperation of sleeve (13).
2. a kind of spool of quick-closing valve according to claim 1, which is characterized in that be threaded on the valve disc (12)
Valve rod base (121), a through-hole passed through for valve rod (14) is provided on the valve rod base (121), and the head setting of valve rod (14) exists
In clearance space between valve disc (12) and valve rod base (121), the head outer diameter of valve rod (14) is greater than the aperture of the through-hole；Institute
The one end and valve rod base (121) for stating the first spring (142) offset, and the other end and the valve rod (14) of the first spring (142) offset.
3. a kind of spool of quick-closing valve according to claim 2, which is characterized in that fixation is set on the valve rod base (121)
A retaining ring (141) are equipped with, first spring (142) is set between the retaining ring (141) and the valve rod base (121).
4. a kind of spool of quick-closing valve according to claim 3, which is characterized in that first spring (142) with it is described
It is additionally provided between retaining ring (141) spring base (143), spring base (143) is set on valve rod (14).
5. a kind of spool of quick-closing valve according to claim 2, which is characterized in that also set up on the valve rod base (121)
There are several second stomatas, which is connected on the left of the valve rod base (121) and valve rod base (121) right side.
6. a kind of spool of quick-closing valve according to claim 1, which is characterized in that valve disc (12) outer wall is provided with spiral shell
Spin slot, the helicla flute and the sleeve (13) cooperation constitute the airflow channel.
7. a kind of spool of quick-closing valve according to claim 1, which is characterized in that the valve disc (12) is close to valve seat (15)
One end be provided with strainer (122).
8. a kind of spool of quick-closing valve according to claim 7, which is characterized in that the strainer (122) by rolling with
Valve disc (12) is connected and fixed.
9. a kind of spool of quick-closing valve according to claim 1, which is characterized in that fixed on valve disc (12) periphery wall
It is provided with anti-rotation member (124), is provided with the stroke groove axially extended, the anti-rotation member on sleeve (13) inner wall
(124) it is installed in the stroke groove, can slide axially in the stroke groove with the change in location of valve disc (12), thus valve
Dish (12) can only relative sleeve (13) move axially, and be unable to relative sleeve (13) and circumferentially rotated.
10. a kind of quick-closing valve, which is characterized in that including spool as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899654.5A CN110500417B (en) | 2019-09-23 | 2019-09-23 | Quick-closing valve and valve core thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910899654.5A CN110500417B (en) | 2019-09-23 | 2019-09-23 | Quick-closing valve and valve core thereof |
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| Publication Number | Publication Date |
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| CN110500417A true CN110500417A (en) | 2019-11-26 |
| CN110500417B CN110500417B (en) | 2024-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910899654.5A Active CN110500417B (en) | 2019-09-23 | 2019-09-23 | Quick-closing valve and valve core thereof |
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| US4176687A (en) * | 1977-08-25 | 1979-12-04 | Cla-Val Co. | Hollow spool valve |
| EP0030083A2 (en) * | 1979-10-31 | 1981-06-10 | Fluid Controls, Inc. | Solenoid operated relief valve |
| CN101520095A (en) * | 2009-03-26 | 2009-09-02 | 杭州汽轮机股份有限公司 | Bell type adjusting steam valve |
| CN201884074U (en) * | 2010-12-03 | 2011-06-29 | 北京全三维动力工程有限公司 | High-pressure regulating valve |
| CN202280482U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Quick closing valve for steam turbine |
| CN205780942U (en) * | 2016-06-30 | 2016-12-07 | 东方电气集团东方汽轮机有限公司 | A kind of steam turbine valve |
| CN210531645U (en) * | 2019-09-23 | 2020-05-15 | 浙江华元汽轮机械有限公司 | Quick-closing valve and valve core thereof |
-
2019
- 2019-09-23 CN CN201910899654.5A patent/CN110500417B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4176687A (en) * | 1977-08-25 | 1979-12-04 | Cla-Val Co. | Hollow spool valve |
| EP0030083A2 (en) * | 1979-10-31 | 1981-06-10 | Fluid Controls, Inc. | Solenoid operated relief valve |
| CN101520095A (en) * | 2009-03-26 | 2009-09-02 | 杭州汽轮机股份有限公司 | Bell type adjusting steam valve |
| CN201884074U (en) * | 2010-12-03 | 2011-06-29 | 北京全三维动力工程有限公司 | High-pressure regulating valve |
| CN202280482U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Quick closing valve for steam turbine |
| CN205780942U (en) * | 2016-06-30 | 2016-12-07 | 东方电气集团东方汽轮机有限公司 | A kind of steam turbine valve |
| CN210531645U (en) * | 2019-09-23 | 2020-05-15 | 浙江华元汽轮机械有限公司 | Quick-closing valve and valve core thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110500417B (en) | 2024-05-17 |
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