CN2929373Y - Low noise low cavitation regulating valve - Google Patents
Low noise low cavitation regulating valve Download PDFInfo
- Publication number
- CN2929373Y CN2929373Y CN 200620113523 CN200620113523U CN2929373Y CN 2929373 Y CN2929373 Y CN 2929373Y CN 200620113523 CN200620113523 CN 200620113523 CN 200620113523 U CN200620113523 U CN 200620113523U CN 2929373 Y CN2929373 Y CN 2929373Y
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- China
- Prior art keywords
- valve
- orifice sleeve
- gap
- low
- cavitation erosion
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- Expired - Lifetime
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- 230000001105 regulatory effect Effects 0.000 title description 2
- 230000003628 erosive effect Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model provides an adjustable valve with small noise and small cavitation erosion, comprising a valve body and a valve cover which are arranged into an integral structure, wherein a valve seat and a valve flap matching with the valve seat are provided in the valve cavity of the valve body, a valve stem is connected with the valve flap, and an inner choke sleeve is further provided in the valve cavity, the inner choke sleeve fits over the valve flap, a plurality of through-holes are distributed on the side wall, and an outer choke sleeve and a plurality of middle choke sleeve can be provided on the outer side of the inner choke sleeve to form a multistage choke structure. The valve can mostly be utilized as the pipe system of generating set, adjustable valve or supercritical adjustable valve of other similar situations, with small noise and less cavitation erosion.
Description
Technical field
The utility model relates to the low cavitation erosion of a kind of low noise modulating valve, mainly can be used as the piping system of generator set and the modulating valve or the overcritical modulating valve of other similar applications.
Background technique
Existing modulating valve and the overcritical modulating valve that is used for the generator set piping system comprises installation all-in-one-piece valve body and valve gap, be provided with in the valve pocket of described valve body valve seat and with the supporting flap of valve seat, and and the supporting orifice sleeve of flap, be connected with valve rod on the described flap, mobile drive flap by valve rod moves, change the relative distance of flap and orifice sleeve throttle orifice, with the keying and the aperture of regulating valve.The defective of this valve is that cavitation erosion is serious because the medium differential pressure of electric power factory equipment is big, and the noise of generation is big.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the utility model provides the low cavitation erosion of a kind of low noise modulating valve, and the noise that this valve produces is little, and the cavitation erosion of appearance is few.
The present invention realizes that the above-mentioned purpose technological scheme is: the low cavitation erosion of a kind of low noise modulating valve, comprise all-in-one-piece valve body and valve gap are installed, be provided with in the valve pocket of described valve body valve seat and with the supporting flap of valve seat, be connected with valve rod on the described flap, also be provided with interior orifice sleeve in the described valve pocket, the throttling condom is distributed with some through holes in described flap outside in described on its sidewall.
The invention has the beneficial effects as follows: owing to adopted orifice sleeve, make medium first before the valve seat mouth of flowing through through the through hole on the orifice sleeve, consume certain pressure reduction, avoided the rapid conversion of valve seat mouth place's medium differential pressure and flow velocity, reduced the generation of cavitation erosion, also reduced medium simultaneously and brought vibration and noise because of turbulent flow, cavitation erosion, flash distillation etc.In addition, can also orifice size under each aperture effectively be distributed, improve the control characteristic of valve by suitable setting to hole size, quantity and distribution mode on the orifice sleeve.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Referring to accompanying drawing, the low cavitation erosion of the low noise that the utility model provides modulating valve comprises installs all-in-one-piece valve body 1 and valve gap 6, be provided with in the valve pocket 2 of described valve body valve seat 14 and with the supporting flap 11 of valve seat, be connected with valve rod 5 on the described flap, orifice sleeve 3 in also being provided with in the described valve body, the throttling condom is distributed with some through holes 10 in described flap outside in described on its sidewall.
Through hole in described on the orifice sleeve sidewall can be straight hole radially usually, also can be cone shape hole.
Orifice sleeve is outer in described can also be provided with outer orifice sleeve 8, and the restriction of described outer throttling condom orifice sleeve in described exceptionally is distributed with some through holes on its sidewall, and described through hole can be straight hole radially usually, also can be cone shape hole.By the setting of inside and outside two orifice sleeves, can further reduce cavitation erosion and noise.In addition, when power plant or the use of other part occasions, because impurity is more in the medium, the through hole that outer throttling puts can be arranged to aperture (concrete aperture can be determined according to the impurity situation), so that medium is filtered, make the impurity in the medium can't pass through outer orifice sleeve, avoided the infringement of impurity thus valve seat and flap.
Can leave the gap between described outer orifice sleeve and the interior orifice sleeve, form thus one by outer orifice sleeve through hole to the buffer area the interior orifice sleeve through hole, help like this recovering the medium static pressure, improve the flow condition of medium, reduce cavitation erosion and noise.
Can leave the gap between described outer orifice sleeve and the valve pocket sidewall, help the even distribution of interior pressure medium of valve pocket and flow like this.
According to the throttling needs, can also be outside described be provided with between orifice sleeve and the interior orifice sleeve one or more in the middle of orifice sleeves, described in the middle of each the sidewall of orifice sleeve be provided with through hole, described through hole can be straight hole radially usually, also can be cone shape hole, leave the gap between each orifice sleeve.Form the throttle structure more than three grades or three grades thus, with the throttling needs under the satisfied more High Pressure Difference.
The inlet passage 9 and the outlet passage 13 of this valve all can be arranged on the valve body, its major component lays respectively at the left and right sides of described valve pocket, described inlet passage extends upward along the media flow direction is oblique from left to right, the angle of its axis and horizontal plane can be 13 ± 3 degree, its inner end is opened on the sidewall of described valve pocket, described outlet passage extends upward along the media flow direction is oblique from left to right, the angle of its axis and horizontal plane can be 11 ± 3 degree, its inner end is opened on the bottom of valve pocket, the horizontal line that the axis of valve inlet and outlet extends about can being, usually can be overlapping, can be adapted to horizontal pipe better like this, also help avoid MEDIA FLOW in the valve body to steady transformation, avoid because of flowing to cavitation erosion and the noise that rapid change causes.
Described valve seat can be provided with annular spirotallic gasket 12 with the sealing position between the valve body, and the sealing position between described interior orifice sleeve, valve seat and the valve gap three also can be provided with annular spirotallic gasket 7.The good sealing effect of this pad adapts to hot environment, and the life-span is long, good reliability.
Orifice sleeve so both can have good guiding to flap with being Spielpassung between the described flap in described, avoided flap to rock when moving up and down, and can guarantee that again valve rod can not be stuck.
The sealing surface of described flap is positioned at its underpart, is cone-shaped, and the sealing surface of described valve seat also is corresponding cone-shaped, and both taperings generally can be identical, forms reliable conical surface face seal, to adapt to the High Pressure Difference of medium.
The valve seat opening that is positioned at described valve base sealing basifacial can be toroidal, helps the conversion gradually of velocity of medium like this, avoids because of the flow velocity turbulent flow that causes of conversion and noise etc. rapidly.
Modes such as described valve rod is threaded with adopting between the described flap, bolt connection are fixedly connected.
Described valve rod extends upward from valve pocket, pass the valve rod hole on the described valve gap, extend to the valve gap outside, described valve rod hole top is stuffing box, in the described stuffing box filler is housed, and is provided with the Gland that is pressed on the filler, described filler is enclosed in central authorities with described valve rod, form the sealing between valve rod and the valve gap thus, and guarantee that valve rod can move.By adjusting Gland, just can adjust filler at any time with pressure between the valve rod and seal degree, and can filler be compressed, to guarantee that filler is with the sealing between the valve rod at the downward precession gland in filler wearing and tearing back.
Described valve rod upper end can connect pneumatic diaphragn actuating mechanism, so that move by starting diaphragm actuator drive valve rod.Described pneumatic diaphragn actuating mechanism can be fixedly mounted on the described valve gap by its support, forms an integral body thus.The actuator of this valve also can adopt the technology of other any suitable.
Described pneumatic diaphragn actuating mechanism can be provided with positioning work piece and air-filtering reduction valve, so that position and decompression where necessary.
Can adopt stud bolt 4 to connect between described valve gap and the valve body, the lower end of described stud bolt is screwed on the described valve body, the installation through hole on the valve gap is passed in the centre, its upper end is exposed at outside the valve gap, and be connected with nut, compress valve gap with described nut, just can realize that valve gap is with the connection between the valve body.This Placement is convenient to installation and removal.
When as overcritical modulating valve, can adopt alloys such as F22, F91,12Cr1MoV to make raw material, to improve intensity.
Use during statement direction position in this specification " on ", D score, " left side ", " right side ", only be in order to express easily, be used to distinguish the relative position at each position, true bearing when not representing this modulating valve to use, be understandable that simultaneously, the exchange of any two relative directions does not all influence enforcement of the present invention.
Claims (10)
1. a low noise hangs down the cavitation erosion modulating valve, comprise all-in-one-piece valve body and valve gap are installed, be provided with in the valve pocket of described valve body valve seat and with the supporting flap of valve seat, be connected with valve rod on the described flap, it is characterized in that also being provided with in the described valve body interior orifice sleeve, the throttling condom is distributed with some through holes in described flap outside in described on its sidewall.
2. the low cavitation erosion of low noise as claimed in claim 1 modulating valve, it is characterized in that described in through hole on the orifice sleeve sidewall be radially straight hole or cone shape hole.
3. the low cavitation erosion of low noise as claimed in claim 1 modulating valve is characterized in that described interior orifice sleeve also is provided with outer orifice sleeve outward, is distributed with some through holes on the sidewall of described outer orifice sleeve.
4. the low cavitation erosion of low noise as claimed in claim 3 modulating valve is characterized in that through hole that described outer throttling puts is radially straight hole or cone shape hole.
5. the low cavitation erosion of low noise as claimed in claim 3 modulating valve is characterized in that leaving the gap between described outer orifice sleeve and the interior orifice sleeve, also leaves the gap between described outer orifice sleeve and the valve pocket sidewall.
6. the low cavitation erosion of low noise as claimed in claim 5 modulating valve, it is characterized in that being provided with between described outer orifice sleeve and the interior orifice sleeve one or more middle orifice sleeves, be equipped with through hole on the sidewall of described each middle orifice sleeve, leave the gap between described each orifice sleeve, also leave the gap between described outer orifice sleeve and the valve pocket sidewall.
7. the low cavitation erosion of low noise as claimed in claim 1 modulating valve, the inlet passage and the outlet passage that it is characterized in that valve all are arranged on the valve body, its major component lays respectively at the left and right sides of described valve pocket, described inlet passage extends upward along the media flow direction is oblique from left to right, the angle of its axis and horizontal plane is 13 ± 3 degree, its inner end is opened on the sidewall of described valve pocket, described outlet passage extends upward along the media flow direction is oblique from left to right, the angle of its axis and horizontal plane is 11 ± 3 degree, its inner end is opened on the bottom of valve pocket, the horizontal line that the axis of valve inlet and outlet extends about being, two horizontal lines are overlapped.
8. as claim 1,2,3,4,5, the low cavitation erosion of 6 or 7 described low noises modulating valve, it is characterized in that described interior orifice sleeve is with being Spielpassung between the described flap, the sealing surface of described flap is positioned at its underpart, be cone-shaped, the sealing surface of described valve seat is corresponding cone-shaped, and the valve seat opening that is positioned at described valve base sealing basifacial is toroidal.
9. the low cavitation erosion of low noise as claimed in claim 8 modulating valve, it is characterized in that described valve rod extends upward from valve pocket, pass the valve rod hole on the described valve gap, extend to the valve gap outside, described valve rod hole top is stuffing box, in the described stuffing box filler is housed, and be provided with the Gland that is pressed on the filler, described filler is enclosed in central authorities with described valve rod, described valve rod upper end connects pneumatic diaphragn actuating mechanism, described pneumatic diaphragn actuating mechanism is fixedly mounted on the described valve gap by its support, is provided with positioning work piece and air-filtering reduction valve.
10. the low cavitation erosion of low noise as claimed in claim 9 modulating valve, it is characterized in that adopting between described valve gap and the valve body stud bolt to connect, the lower end of described stud bolt is screwed on the described valve body, the installation through hole on the valve gap is passed in the centre, its upper end is exposed at outside the valve gap, and be connected with nut, compress valve gap with described nut, just can realize that valve gap is with the connection between the valve body, described valve rod is threaded with adopting between the described flap, or bolt connects, described valve seat is provided with annular spirotallic gasket with the sealing position between the valve body, described interior orifice sleeve, sealing position between valve seat and the valve gap three also is provided with annular spirotallic gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113523 CN2929373Y (en) | 2006-05-08 | 2006-05-08 | Low noise low cavitation regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620113523 CN2929373Y (en) | 2006-05-08 | 2006-05-08 | Low noise low cavitation regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2929373Y true CN2929373Y (en) | 2007-08-01 |
Family
ID=38307755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620113523 Expired - Lifetime CN2929373Y (en) | 2006-05-08 | 2006-05-08 | Low noise low cavitation regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2929373Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832396A (en) * | 2010-05-17 | 2010-09-15 | 哈尔滨工程大学 | Low-vibration noise valve |
| CN101922582A (en) * | 2010-07-20 | 2010-12-22 | 渤海造船厂集团有限公司 | Mute steam blow through valve |
| CN102563096A (en) * | 2012-02-17 | 2012-07-11 | 无锡市亚迪流体控制技术有限公司 | Ultrahigh pressure differential tight cut-off regulating valve |
| CN103994235A (en) * | 2014-05-29 | 2014-08-20 | 超达阀门集团股份有限公司 | Erosive wear resisting angle-type valve |
| CN104964040A (en) * | 2015-07-03 | 2015-10-07 | 南通国电电站阀门有限公司 | Supercritical high-temperature and high-pressure solid-forged pneumatic drain throttle valve |
-
2006
- 2006-05-08 CN CN 200620113523 patent/CN2929373Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832396A (en) * | 2010-05-17 | 2010-09-15 | 哈尔滨工程大学 | Low-vibration noise valve |
| CN101922582A (en) * | 2010-07-20 | 2010-12-22 | 渤海造船厂集团有限公司 | Mute steam blow through valve |
| CN102563096A (en) * | 2012-02-17 | 2012-07-11 | 无锡市亚迪流体控制技术有限公司 | Ultrahigh pressure differential tight cut-off regulating valve |
| CN102563096B (en) * | 2012-02-17 | 2013-05-01 | 无锡市亚迪流体控制技术有限公司 | Ultrahigh pressure differential tight cut-off regulating valve |
| CN103994235A (en) * | 2014-05-29 | 2014-08-20 | 超达阀门集团股份有限公司 | Erosive wear resisting angle-type valve |
| CN104964040A (en) * | 2015-07-03 | 2015-10-07 | 南通国电电站阀门有限公司 | Supercritical high-temperature and high-pressure solid-forged pneumatic drain throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HARBIN SONGLIN POWER STATION EQUIPMENT CO.,LTD. Free format text: FORMER OWNER: ZHANG FENGGUO Effective date: 20080613 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080613 Address after: Harbin Development Zone haping road Heilongjiang District Yantai Road 5, zip code: 150060 Patentee after: Harbin Songlin Power Station Equipment Co., Ltd. Address before: Beijing City, Haidian District Cuiwei Road No. 4 Yiyuanju 17-2-1302, zip code: 100036 Patentee before: Zhang Fengguo |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070801 |
|
| EXPY | Termination of patent right or utility model |