CN106286857B - A kind of New-type boiler continuous blowdown regulating valve - Google Patents
A kind of New-type boiler continuous blowdown regulating valve Download PDFInfo
- Publication number
- CN106286857B CN106286857B CN201610893102.XA CN201610893102A CN106286857B CN 106286857 B CN106286857 B CN 106286857B CN 201610893102 A CN201610893102 A CN 201610893102A CN 106286857 B CN106286857 B CN 106286857B
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- China
- Prior art keywords
- valve
- seat
- throttle
- type chamber
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 22
- 230000000903 blocking effect Effects 0.000 claims abstract description 12
- 210000004907 gland Anatomy 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000009063 long-term regulation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of New-type boiler continuous blowdown regulating valves, it includes valve body (1), it offers in valve body (1) and vertical is provided with type chamber (2), the medium inlet (3) of communicate-type chamber (2) is also provided on the side wall of valve body (1), medium runner (11) are provided in the middle part of valve seat (10), the slag blocking ring (12) matched with pushing off the slag section (5) is provided at the top of medium runner (11), multi-level throttle seat (13) are offered on medium runner (11) wall, multi-level throttle core (14) are offered on spool (6) outer wall, guiding rib (15) are connected in final stage throttling core (14), guiding rib (15) is located in final stage throttle seat (13), the bottom end of valve seat (10) is connected with the protection inner catheter (16) in type chamber (2).The beneficial effects of the present invention are: structure is equal after simply, effectively steadily adjusting rate-of flow, guaranteeing valve long-term work to close tight, long service life.
Description
Technical field
The present invention relates to the technical fields of the structure of large-scale thermal power boiler drum continuous blowdown valve, especially a kind of
New-type boiler continuous blowdown regulating valve.
Background technique
Currently, most of thermal power plants are all to select porous valve pocket flow restriction control valve, right angle single-stage plunger flow restriction control
The valves such as valve come as continuous blowdown regulating valve using and most of is all import external product, and it has the following deficiencies:
(1) due in medium impurity it is very much, hole on the valve pocket of porous valve pocket flow restriction control valve is easy blocking, and valve pocket and valve core chamber enter
There is card and relate to without being adjustable in dregs, while valve is extremely easily accessible dregs between sealing surface when closed, to make valve not
Energy tight closing, leaks.(2) due to occurring leaking and pressure difference is very big at this time, sealing surface will be washed out seriously, from this valve
Door cannot again seal, simultaneously as being constantly in the serious scouring state of high temperature and pressure saturated water, valve throttle at throttling spool
Place will be quickly by erosion and cavitation, and valve loses adjustment effect.(3) due to flow restriction control partial destruction, valve not can be carried out just
It often adjusts, influences the normal operation of system.(4) since valve is occurring as soon as leakage using very short time, and with using the time
Increase, leakage rate will continue to always the time of one light maintenance phase of unit also with increase, such case, could to valve into
Row processing, this will bring very huge economic loss to user, because high-temperature high-pressure medium is lost and increases boiler replenishing water, loss
It will be considerably beyond the value of valve itself.(5) since the valve of selection is not suitable for such applying working condition, valve will bear very big
Damage, this will increase the maintenance capacity of valve, replaces the workload and other expenditure of valve.It can thus be appreciated that existing flow restriction control
Valve can not be promoted the use of.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides that a kind of structure is simple, effectively steady adjusts medium
Flow can close New-type boiler continuous blowdown regulating valve tight, with long service life after guaranteeing valve long-term work.
The purpose of the present invention is achieved through the following technical solutions: a kind of New-type boiler continuous blowdown regulating valve, it includes
Valve body offers the type chamber of vertical setting in the valve body, the medium inlet of communicate-type chamber is also provided on the side wall of valve body,
Type chamber is connected to the upper and lower surface of valve body, and the type is intracavitary to be connected with valve rod, pushing off the slag section and spool, valve rod position in turn from top to bottom
In the top of medium inlet, the upper end of valve rod extends the outside of valve body, and gland, valve rod are equipped on valve rod elongated end
On be also cased with the guide sleeve intracavitary positioned at type, airtight and watertight padding is installed between guide sleeve and gland；The spool is located at
The lower section of medium inlet, the outer cover of spool are provided with medium runner in the middle part of valve seat equipped with type intracavitary valve seat is fixed on, are situated between
It is provided with the slag blocking ring matched with pushing off the slag section at the top of mass flow road, offers multi-level throttle seat on medium runner wall, outside spool
Multi-level throttle core is offered on wall, throttling core and throttle seat form throttling grade, be connected with guiding rib, guiding rib on final stage throttling core
In final stage throttle seat, the bottom end of the valve seat is connected with the protection inner catheter intracavitary positioned at type.
Bolt is connected between the top of the gland and valve body.
Three-level throttling core is offered in the spool outer wall.
Three-level throttle seat is offered on the medium runner wall.
The surface Jun Dui of the throttling core and throttle seat is welded with hard alloy.
The protection inner catheter is connected to the medium runner of valve seat.
The invention has the following advantages that (1) the invention can avoid dregs cards in medium to relate to valve, avoids the occurrence of dregs card and relate to
The phenomenon that valve is not normally functioning valve；Meanwhile preventing valve dregs enter valve seat and valve core sealed cover when closed, out
Leakage in existing, and by spool and sealing surface of seat cavitation damage.(2) due to that will flash in high pressure saturated water pressure reduction,
Very serious erosion is generated to downstream, using the highly effective erosion for avoiding medium to flow restriction control grade of multi-level throttle energy, really
It protects the long-term regulation performance of valve and closes performance, greatly extend the service life life of valve.
Detailed description of the invention
Fig. 1 is present invention structural schematic diagram in the open state；
Fig. 2 is the structural schematic diagram that the present invention is in close state；
Fig. 3 is the structural schematic diagram of valve seat of the invention；
In figure, 1- valve body, 2- type chamber, the medium inlet 3-, 4- valve rod, 5- pushing off the slag section, 6- spool, 7- gland, 8- led
To set, 9- airtight and watertight padding, 10- valve seat, 11- medium runner, 12- slag blocking ring, 13- throttle seat, 14- throttles core, 15- guiding rib,
16- protects inner catheter, 17- bolt.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing, and protection scope of the present invention is not limited to as described below:
As shown in Fig. 1 ~ 3, a kind of New-type boiler continuous blowdown regulating valve, it includes valve body 1, is opened up in the valve body 1
There is the type chamber 2 of vertical setting, the medium inlet 3 of communicate-type chamber 2 is also provided on the side wall of valve body 1, type chamber 2 is connected to valve body 1
Upper and lower surface is connected with valve rod 4, pushing off the slag section 5 and spool 6 in turn in the type chamber 2 from top to bottom, and valve rod 4 enters positioned at medium
The top of mouth 3, the upper end of valve rod 4 extends the outside of valve body 1, gland 7, filler pressure is equipped on 4 elongated end of valve rod
Be connected with bolt 17 between lid 7 and the top of valve body 1, be also cased with the guide sleeve 8 in type chamber 2 on valve rod 4, guide sleeve 8 with
Airtight and watertight padding 9 is installed between gland 7, is sealed the regulating valve by airtight and watertight padding 9, instead of valve bonnet seal,
And a possibility that still ensuring that leakproofness, greatly reducing valve leakage out of steam system, keep valve mechanism succinct, valve mechanism is greatly
Reduce, therefore valve is light-weight, operation is light, convenient for the assembly and disassembly and maintenance of valve.
The spool 6 is located at the lower section of medium inlet 3, and the outer cover of spool 6 is equipped with the valve seat being fixed in type chamber 2
10, the middle part of valve seat 10 is provided with medium runner 11, and the top of medium runner 11 is provided with the slag blocking ring matched with pushing off the slag section 5
12, multi-level throttle seat 13 is offered on 11 wall of medium runner, the present embodiment uses three-level throttle seat, offers on 6 outer wall of spool
Multi-level throttle core 14, the present embodiment form throttling grade, final stage throttling core 14 using three-level throttling core, throttling core 14 and throttle seat 13
On be connected with guiding rib 15, guiding rib 15 is located in final stage throttle seat 13, and the bottom end of the valve seat 10 is connected with positioned at type
Protection inner catheter 16 in chamber 2, protection inner catheter 16 are connected to the medium runner 11 of valve seat 10.
The surface Jun Dui of the throttling core 14 and throttle seat 13 is welded with hard alloy, and the regulating valve is made to have high-wearing feature
With high erosion resistant feature, while having the characteristics that long service life.
As shown in the figures 1 and 2, the guide sleeve 8 plays the guiding role to valve rod 4, and guiding rib 15 and final stage section
Cooperation between stream seat 13 plays the guiding role to spool 3, it is therefore prevented that vibration of the spool 3 in flow restriction control.
The course of work of the invention is as follows:
As shown in Figure 1, drum just needs blowdown, is lifted up valve rod 4 when unit operation, each core 14 and corresponding of throttling
Throttle seat 13 separate, sewerage by medium inlet 3 sequentially through slag blocking ring 12, throttling core 14 and throttle seat 13 between throttling lead to
Road, medium runner 11 are finally discharged from 2 tail portion of type chamber, to realize steady, the accurate purpose for adjusting water amount of blowdown.Due to
High pressure saturated water pressure drop classification decompression processing is greatly reduced single-stage choke pressure drop, plays each section of protection using multi-level throttle
The effect for flowing grade, extends the service life of regulating valve, smoothly control of sewage disposal water.
As shown in Fig. 2, moving down valve rod 4 when to close the regulating valve, throttling core 14 and throttle seat 13 cooperate, from
And close regulating valve, while pushing off the slag section 5 enters in slag blocking ring 12 and forms cooperation with slag blocking ring 12, form slag in block media
Dregs enters throttling passage, effectively stops dregs, when regulating valve being avoided to close dregs enter valve seat 10 and 6 sealing surface of spool it
Between, guarantee that valve is closed tightly, this structure forms reducing pressure by regulating flow grade again.
Claims (6)
1. a kind of New-type boiler continuous blowdown regulating valve, it is characterised in that: it includes valve body (1), is opened up in the valve body (1)
There is the type chamber (2) of vertical setting, the medium inlet (3) of communicate-type chamber (2) is also provided on the side wall of valve body (1), type chamber (2) is even
The upper and lower surface of port valve body (1), the type chamber (2) is interior to be connected with valve rod (4), pushing off the slag section (5) and spool in turn from top to bottom
(6), valve rod (4) is located at the top of medium inlet (3), and the upper end of valve rod (4) extends the outside of valve body (1), and valve rod (4) prolongs
Stretch and be equipped with gland (7) on end, be also cased with the guide sleeve (8) in type chamber (2) on valve rod (4), guide sleeve (8) with fill out
Airtight and watertight padding (9) are installed between material gland (7)；The spool (6) is located at the lower section of medium inlet (3), spool (6) it is outer
Portion is set with the valve seat (10) being fixed in type chamber (2), is provided with medium runner (11), medium runner in the middle part of valve seat (10)
(11) it is provided with the slag blocking ring (12) matched with pushing off the slag section (5) at the top of, offers multi-level throttle on medium runner (11) wall
Seat (13) offers multi-level throttle core (14) on spool (6) outer wall, and throttling core (14) and throttle seat (13) form throttling grade, end
It is connected with guiding rib (15) in grade throttling core (14), guiding rib (15) is located in final stage throttle seat (13), the valve seat (10)
Bottom end be connected with the protection inner catheter (16) in type chamber (2)；
The work step of the regulating valve are as follows: when unit operation, drum just needs blowdown, is lifted up valve rod (4), respectively throttle core
(14) it is separated with corresponding throttle seat (13), sewerage is by medium inlet (3) sequentially through slag blocking ring (12), throttling core (12) and section
Flow the throttling passage between seat (13), medium runner (11) is finally discharged from type chamber (2) tail portion；When to close the regulating valve,
It moves down valve rod (4), throttling core (14) and throttle seat (13) cooperate, to regulating valve be closed, while pushing off the slag section (5) enters
It is formed in slag blocking ring (12) and with slag blocking ring (12) and is cooperated, formed dregs in block media and enter throttling passage, this structure and shape
At reducing pressure by regulating flow grade.
2. a kind of New-type boiler continuous blowdown regulating valve according to claim 1, it is characterised in that: the gland
(7) it is connected between the top of valve body (1) bolt (17).
3. a kind of New-type boiler continuous blowdown regulating valve according to claim 1, it is characterised in that: the spool (6)
Three-level throttling core (14) is offered on outer wall.
4. a kind of New-type boiler continuous blowdown regulating valve according to claim 1, it is characterised in that: the medium runner
(11) three-level throttle seat (13) are offered on wall.
5. a kind of New-type boiler continuous blowdown regulating valve according to claim 1, it is characterised in that: the throttling core
(14) and the surface Jun Dui of throttle seat (13) is welded with hard alloy.
6. a kind of New-type boiler continuous blowdown regulating valve according to claim 1, it is characterised in that: led in the protection
Pipe (16) is connected to the medium runner (11) of valve seat (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893102.XA CN106286857B (en) | 2016-10-13 | 2016-10-13 | A kind of New-type boiler continuous blowdown regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610893102.XA CN106286857B (en) | 2016-10-13 | 2016-10-13 | A kind of New-type boiler continuous blowdown regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106286857A CN106286857A (en) | 2017-01-04 |
| CN106286857B true CN106286857B (en) | 2019-11-05 |
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ID=57718159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610893102.XA Active CN106286857B (en) | 2016-10-13 | 2016-10-13 | A kind of New-type boiler continuous blowdown regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106286857B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274037A (en) * | 2019-05-29 | 2019-09-24 | 黑龙江北方阀业有限责任公司 | A kind of continuous blowdown valve |
| CN112049941B (en) * | 2020-07-28 | 2025-08-01 | 北京航天石化技术装备工程有限公司 | Pressure reducing regulating valve |
| CN112879637A (en) * | 2021-03-16 | 2021-06-01 | 杭州鼎安动力设备有限公司 | Multi-stage adjustable pressure reducing valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563203A (en) * | 2012-03-07 | 2012-07-11 | 杭州华惠阀门有限公司 | Pressure reducing valve and temperature-reducing and pressure-reducing device |
| CN102966747A (en) * | 2012-11-21 | 2013-03-13 | 瑞安市良精石化机械厂 | High-pressure-difference-resisting multi-grade adjusting device for pipeline |
| CN103291941A (en) * | 2012-02-24 | 2013-09-11 | 宋新建 | Valve lip |
| CN103591353A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | High-pressure and micro-flow tandem type regulating valve |
| CN206092991U (en) * | 2016-10-13 | 2017-04-12 | 李岑文达 | Novel boiler continuous blowdown governing valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8955533B2 (en) * | 2013-06-07 | 2015-02-17 | Sonnax Industries, Inc. | Multiple pressure ratio valve assembly |
-
2016
- 2016-10-13 CN CN201610893102.XA patent/CN106286857B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291941A (en) * | 2012-02-24 | 2013-09-11 | 宋新建 | Valve lip |
| CN102563203A (en) * | 2012-03-07 | 2012-07-11 | 杭州华惠阀门有限公司 | Pressure reducing valve and temperature-reducing and pressure-reducing device |
| CN102966747A (en) * | 2012-11-21 | 2013-03-13 | 瑞安市良精石化机械厂 | High-pressure-difference-resisting multi-grade adjusting device for pipeline |
| CN103591353A (en) * | 2013-11-20 | 2014-02-19 | 无锡智能自控工程股份有限公司 | High-pressure and micro-flow tandem type regulating valve |
| CN206092991U (en) * | 2016-10-13 | 2017-04-12 | 李岑文达 | Novel boiler continuous blowdown governing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106286857A (en) | 2017-01-04 |
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Effective date of registration: 20201209 Address after: No.7-22, No.74, Taizhong Road, Guanghan City, Deyang City, Sichuan Province 610000 Patentee after: Sichuan Dongfang Weida Technology Co., Ltd Address before: No.1, 12 / F, unit 4, building 1, No.79, Zhimin East Road, Wuhou District, Chengdu, Sichuan 610000 Patentee before: Li Cenwenda Patentee before: Li Wei |