CN203797097U - Low-pressure bypass spray regulating valve - Google Patents
Low-pressure bypass spray regulating valve Download PDFInfo
- Publication number
- CN203797097U CN203797097U CN201420135931.8U CN201420135931U CN203797097U CN 203797097 U CN203797097 U CN 203797097U CN 201420135931 U CN201420135931 U CN 201420135931U CN 203797097 U CN203797097 U CN 203797097U
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- CN
- China
- Prior art keywords
- valve
- low
- valve body
- hole
- body cavity
- 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.)
- Expired - Lifetime
Links
- 230000001105 regulatory effect Effects 0.000 title abstract description 6
- 239000007921 spray Substances 0.000 title abstract description 4
- 150000004767 nitrides Chemical class 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000008030 elimination Effects 0.000 claims description 7
- 238000003379 elimination reaction Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 238000006902 nitrogenation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a low-pressure bypass spray regulating valve comprising a valve body, a bonnet, a valve seat, a guide cylinder, a spool and a valve stem. A valve body inner cavity is formed between the bonnet and the valve body. The inner surface of the valve body inner cavity is coated with a nitride layer. The bottom of the valve body inner cavity is provided with a muffling buffer area; the sidewall of the guide cylinder is provided with a plurality of levels of round flow holes and a plurality of elongated flow holes; the spool is arranged within the guide cylinder; one end of the valve stem is connected with the spool, and the other end of the valve stem is connected with an external drive mechanism. The low-pressure bypass spray regulating valve has the advantages that fluid can be buffered and muffled, the valve body is effectively protected from cracks or cracking, and the service life of the regulating valve is prolonged.
Description
Technical field
The utility model relates to regulating valve, relates in particular to a kind of low-pressure bypass, belongs to the visual plant in the industry heat power equipments such as electric power, oil, chemical industry or system automation field.
Background technique
When heat power equipment is in the time starting or break down, or will higher vapor (steam) temperature be reduced to need temperature value time, it can be according to actuating signal or trouble signal, or adjusted medium is issued its temperature signal, automatically open or close low-pressure bypass and regulate injection flow rate, make to be adjusted within medium temperature parameter is controlled at security of system scope, or within being controlled at system service condition parameter area.
Low-pressure bypass working environment is quite severe, under large, the large flow of High Pressure Difference, the temperature difference, throttle and under generation cavitation phenomenon state, move for a long time, cause valve body adjusting function variation, produce leakage phenomenon, lose the effect that water spray regulates, make systematic parameter cannot ensure normal operation.The complex structure of the low-pressure bypass of sale, poor safety performance, vibration is in the market relatively more violent, noise is larger, working life is short, makes Consumer quite dissatisfied to this kind valve body.Given this, related domain is in the urgent need to improving current low-pressure bypass.
Model utility content
Technical problem to be solved in the utility model: provide for the deficiencies in the prior art that a kind of simple in structure, reducing pressure by regulating flow, anti-cavitation erosion effect are good, the low-pressure bypass of long service life.
The technical problem that the utility model solves can realize by the following technical solutions:
Low-pressure bypass, comprising:
One valve body, the both sides of described valve body are respectively arranged with water intake and water outlet, and described entery and delivery port is " Z " type structure that the high water outlet of water intake is low;
One is fixedly installed on the valve gap at described valve body top, in described valve gap, there is a through hole, in described through hole, be provided with a guide sleeve, between described valve gap and described valve body, form a body cavity, the internal surface of described body cavity is coated with a nitride layer, the middle part of described body cavity is provided with a ladder-type through hole, and its bottom is a noise elimination buffer area;
One is arranged on the valve seat in described ladder-type through hole, described valve seat and this ladder-type through hole interference fit;
One is arranged in the guide shell of described body cavity, the top of described guide shell and bottom are supported respectively on described valve gap and described valve seat, the sidewall middle part of described guide shell is provided with the circular metering orifice of the multilayer being connected with the runner of described body cavity, and its lower sidewall is surrounded with some long strip metering orifices that are connected with the runner of described body cavity;
One spool that is positioned at described guide shell and can slidably reciprocates along described guide shell axial direction, the axial cross section of described spool is for falling " U " font structure, and the periphery wall of described spool contacts with the inner wall sealing of described valve seat;
One through the through hole of described valve gap and be positioned at the valve rod of described guide sleeve, and one end of described valve rod is connected with described spool, and the other end is connected with external drive mechanism.
In a preferred embodiment of the present utility model, the circular metering orifice quantity that the every one deck in the circular metering orifice of described multilayer comprises equates, and the relative position up and down of adjacent every layer of circular metering orifice staggers.
In a preferred embodiment of the present utility model, the wall thickness of described valve body equates.
In a preferred embodiment of the present utility model, the thickness of described nitride layer is 5～15 μ m.
Owing to having adopted technological scheme as above, the beneficial effects of the utility model are:
1, the water intake of valve body, water outlet are " Z " type structure that the high water outlet of water intake is low, and this structure energy convection cell plays the effect of buffering;
2, the wall thickness of valve body equates, design is in order to prevent when the warm alternation like this, makes valve inner produce stress, and then effectively prevents that valve body from cracking even and ftracture;
3, nitride layer is largely increased the erosive wear resistance of body cavity 700, and original serious erosion phenomenon was eliminated substantially, and also extended 2～3 times working life, and nitrogenation treatment technology is maturation process, thereby cost is lower;
4, the noise elimination buffer area in body cavity is effectively cushioned fluid, plays the effect of noise elimination;
5, the circular metering orifice of the multilayer of guide shell and rectangular flow metering-orifice can not only reduce noise, but also have increased negotiability, meanwhile, flow out enough spaces because of cold and hot distortion also to guide shell.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of guide shell of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, the low-pressure bypass providing in figure, comprises valve body 100, valve gap 200, valve seat 300, guide shell 400, spool 500 and valve rod 600.
The both sides of valve body 100 are respectively arranged with water intake 110 and water outlet 120, water intake, water outlet 110,120 are " Z " type structure that the high water outlet of water intake is low, this structure energy convection cell plays the effect of buffering, the wall thickness of valve body 100 equates, design is in order to prevent when the warm alternation like this, make the inner generation stress of valve body 100, and then effectively prevent that valve body 100 from cracking even cracking.
Valve gap 200 is fixedly installed on the top of valve body 100, adopts bolt 210 valve gap 200 to be fixed on to the top of valve body 100 here, certainly, is fixedly connected with mode not unique, such as adopting some other Placements such as buckle.In valve gap 200, there is a through hole 220, in through hole 220, be provided with a guide sleeve 230, between valve gap 200 and valve body 100, form a body cavity 700, the internal surface of body cavity 700 is coated with a nitride layer, and the thickness of nitride layer is 5～15 μ m, and nitride layer is largely increased the erosive wear resistance of body cavity 700, original serious erosion phenomenon is eliminated substantially, also extended 2～3 times working life, and nitrogenation treatment technology is maturation process, thereby cost is lower.The middle part of body cavity 700 is provided with a ladder-type through hole 710, and its bottom is a noise elimination buffer area 720, when fluid is through after ladder-type through hole 711, enters in noise elimination buffer area 720, and fluid is effectively cushioned, and plays the effect of noise elimination.
Valve seat 300 is arranged in the ladder-type through hole 710 of body cavity 700, valve seat 300 and these ladder-type through hole 710 interference fit, when valve seat 300 damages and causes sealability to decline, only need to change valve seat, without the replacing of carrying out modulating valve entirety, this has reduced the cost of maintenance undoubtedly.
Guide shell 400 is arranged in body cavity 700, the top of guide shell 400 and bottom are supported respectively on valve gap 200 and valve seat 300, referring to Fig. 2, the sidewall middle part of guide shell 400 is provided with the circular metering orifice 410 of the multilayer being connected with the runner of body cavity 700, its lower sidewall is surrounded with some long strip metering orifices 420 that are connected with the runner of body cavity 700, circular metering orifice 410 quantity that every one deck in the circular metering orifice 410 of multilayer comprises equate, and the relative position up and down of adjacent every layer of circular metering orifice 410 staggers, the such design of guide shell 400 can not only reduce noise, but also increase negotiability, simultaneously, flow out enough spaces because of cold and hot distortion also to guide shell 400.
Spool 500 is positioned at guide shell 400 and can slidably reciprocates along described guide shell 400 axial directions, and the axial cross section of spool 500 is for falling " U " font structure, and the periphery wall of spool 500 contacts with the inner wall sealing of valve seat 300.
Valve rod 600 is through the through hole 220 of valve gap 200 and be positioned at guide sleeve 230, and guide sleeve 230 makes valve rod 600 more stable in sliding process, and one end of valve rod 600 is connected with spool 500, and the other end is connected with external drive mechanism (not shown).
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. low-pressure bypass, is characterized in that, comprising:
One valve body, the both sides of described valve body are respectively arranged with water intake and water outlet, and described entery and delivery port is " Z " type structure that the high water outlet of water intake is low;
One is fixedly installed on the valve gap at described valve body top, in described valve gap, there is a through hole, in described through hole, be provided with a guide sleeve, between described valve gap and described valve body, form a body cavity, the internal surface of described body cavity is coated with a nitride layer, the middle part of described body cavity is provided with a ladder-type through hole, and its bottom is a noise elimination buffer area;
One is arranged on the valve seat in described ladder-type through hole, described valve seat and this ladder-type through hole interference fit;
One is arranged in the guide shell of described body cavity, the top of described guide shell and bottom are supported respectively on described valve gap and described valve seat, the sidewall middle part of described guide shell is provided with the circular metering orifice of the multilayer being connected with the runner of described body cavity, and its lower sidewall is surrounded with some long strip metering orifices that are connected with the runner of described body cavity;
One spool that is positioned at described guide shell and can slidably reciprocates along described guide shell axial direction, the axial cross section of described spool is for falling " U " font structure, and the periphery wall of described spool contacts with the inner wall sealing of described valve seat;
One through the through hole of described valve gap and be positioned at the valve rod of described guide sleeve, and one end of described valve rod is connected with described spool, and the other end is connected with external drive mechanism.
2. low-pressure bypass as claimed in claim 1, is characterized in that, the circular metering orifice quantity that the every one deck in the circular metering orifice of described multilayer comprises equates, and the relative position up and down of adjacent every layer of circular metering orifice staggers.
3. low-pressure bypass as claimed in claim 1, is characterized in that, the wall thickness of described valve body equates.
4. low-pressure bypass as claimed in claim 1, is characterized in that, the thickness of described nitride layer is 5～15 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135931.8U CN203797097U (en) | 2014-03-24 | 2014-03-24 | Low-pressure bypass spray regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135931.8U CN203797097U (en) | 2014-03-24 | 2014-03-24 | Low-pressure bypass spray regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203797097U true CN203797097U (en) | 2014-08-27 |
Family
ID=51379307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135931.8U Expired - Lifetime CN203797097U (en) | 2014-03-24 | 2014-03-24 | Low-pressure bypass spray regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203797097U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805352A (en) * | 2014-12-29 | 2016-07-27 | 浙江三花汽车零部件有限公司 | Three-way motor piston valve |
| CN105805391A (en) * | 2014-12-29 | 2016-07-27 | 浙江三花汽车零部件有限公司 | Three-way electromagnetic piston valve |
| CN113833923A (en) * | 2021-08-27 | 2021-12-24 | 上海平安高压调节阀门有限公司 | Drainage bypass system of large valve |
-
2014
- 2014-03-24 CN CN201420135931.8U patent/CN203797097U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805352A (en) * | 2014-12-29 | 2016-07-27 | 浙江三花汽车零部件有限公司 | Three-way motor piston valve |
| CN105805391A (en) * | 2014-12-29 | 2016-07-27 | 浙江三花汽车零部件有限公司 | Three-way electromagnetic piston valve |
| CN105805391B (en) * | 2014-12-29 | 2019-01-04 | 浙江三花汽车零部件有限公司 | A kind of threeway electromagnetic piston valve |
| CN113833923A (en) * | 2021-08-27 | 2021-12-24 | 上海平安高压调节阀门有限公司 | Drainage bypass system of large valve |
| CN113833923B (en) * | 2021-08-27 | 2022-11-18 | 上海平安高压调节阀门有限公司 | Drainage bypass system of large valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |