CN204061919U - A kind of plunger multistage high-differential-pressure regulating valve - Google Patents
A kind of plunger multistage high-differential-pressure regulating valve Download PDFInfo
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- CN204061919U CN204061919U CN201420448117.1U CN201420448117U CN204061919U CN 204061919 U CN204061919 U CN 204061919U CN 201420448117 U CN201420448117 U CN 201420448117U CN 204061919 U CN204061919 U CN 204061919U
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Abstract
The utility model provides a kind of plunger multistage high-differential-pressure regulating valve, belongs to valve technology field.It solve existing modulating valve good sealing effect, easily cavitate, flash distillation, cavitation, the phenomenon such as strong noise problem.This plunger multistage high-differential-pressure regulating valve comprises valve rod, valve body and valve gap, valve body has valve pocket and the inlet passage and the outlet passage that are communicated with valve pocket, valve seat is provided with bottom valve pocket, valve seat is provided with the valve cage with some circulating windows, valve cage overcoat has trim ring, is sliding combined with the multiple step plug of plunger type in valve cage, spool has some circular grooves, spool offers the packing holder of annular, packing holder inner sleeve has O RunddichtringO one.This plunger multistage high-differential-pressure regulating valve overcomes the generation of the cavitation erosion of ordinary high pressure angle valve, flash distillation, cavitation phenomenon, has higher sealing, and can reduce noise, has good economic benefit and social benefit.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of plunger multistage high-differential-pressure regulating valve.
Background technique
High-differential-pressure regulating valve is a kind of device regulating rate-of flow, pressure and liquid level, is widely used in the high pressure of the industries such as oil, chemical industry, chemical fertilizer, High Pressure Difference regulating working conditions system.Although current general common modulating valve can resistance to erosion, high temperature resistant etc. in there is good performance, but the assembly of modulating valve inside to be subject to the erosion life-span at work shorter.For this reason under correlative study person makes great efforts, the life-span of modulating valve is constantly in raising.
As Chinese utility model patent application (application number: 200920207221.0) disclose a kind of Multistage decompression high-differential-pressure regulating valve, comprise valve body, valve body upper end has been bolted valve gap, it is characterized in that: described body cavity bottom is embedded with valve seat, valve seat is provided with the sleeve being with some circulating windows, bush outer sleeve is provided with trim ring sleeve and trim ring top is provided with outlet, the multiple step plug of plunger type is sliding combined with in sleeve, the at different levels of multiple step plug have annular groove, spool is fixedly connected with valve rod, and trim ring upper end is fixed by valve gap.Modulating valve described in the utility model can prevent liquid produce cavitation and cavitation erosion, minimizing high-velocity fluid to the washing away of trim, reduce noise; Also to the control containing impurity or solid particle fluid, modulating valve blocking or bonding can be avoided.This high-differential-pressure regulating valve has the feature of High Pressure Difference, high pressure.But be still difficult to the demand reaching user, and often occur with phenomenons such as cavitation erosion, flash distillation, cavitation, strong noises, greatly affect the working life of product.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of good sealing effect, not easily causes the plunger multistage high-differential-pressure regulating valve that the phenomenons such as cavitation erosion, flash distillation, cavitation, strong noise occur.
The purpose of this utility model realizes by following technical proposal: a kind of plunger multistage high-differential-pressure regulating valve, comprise valve rod, valve body and bolt are connected to the valve gap on valve body, it is characterized in that, described valve body has valve pocket and the inlet passage and the outlet passage that are communicated with valve pocket, valve seat is provided with bottom described valve pocket, valve seat is provided with the valve cage with some circulating windows, described valve cage overcoat has trim ring, the multiple step plug of plunger type is sliding combined with in described valve cage, described spool have some circular grooves, spool and valve rod are connected, valve rod one end passes valve gap, trim ring upper end and valve gap lean, on described valve rod, cover has helical spring, described helical spring one end and spool lean, the other end and valve gap lean, described spool offers the packing holder of annular, described packing holder inner sleeve has O RunddichtringO one, described valve rod overlaps from bottom to up successively filler seat, filler, filler spacer, Gland, hold-down grid, and described hold-down grid is fixed on valve gap by pressing plate stud, and described filler seat, filler, filler spacer are all positioned at valve gap.
The principle utilize kinetic energy loss, reducing pressure step by step, overall presure drop is made to be distributed between the circulating window of valve cage at different levels, every one-step valve core produces a part of pressure drop, the pressure drop that every one-step valve core produces all is no more than the critical value of vena contracta place pressure reduction, would not or reduce cavitate, the possibility of cavitation, like this, whole high-differential-pressure regulating valve would not or minimizing is cavitated, flash distillation, cavitation phenomenon possibility, simultaneously because flow velocity reduces, noise also can reduce.Helical spring is enclosed within valve rod, plays certain buffer function, when preventing spool to be subject to hydrodynamic pressure, clashes into valve gap.In addition, valve core upper sleeve has O RunddichtringO one, and anti-fluid enters into the cavity between spool and valve gap, improves sealing effect; And filler on valve rod and filler spacer can effectively anti-fluid overflow from the gap of valve rod and valve gap, coordinate, play double sealing effect with O RunddichtringO one.
In above-mentioned plunger multistage high-differential-pressure regulating valve, described valve cage have 5 circulating windows and circulating window is topmost connected with outlet passage.
In above-mentioned plunger multistage high-differential-pressure regulating valve, described spool have 4 circular grooves.
In above-mentioned plunger multistage high-differential-pressure regulating valve, described filler is positioned at the upper and lower two ends of filler spacer.
In above-mentioned plunger multistage high-differential-pressure regulating valve, filler spacer sleeve-shaped and have some annular concave seats ringwise, is provided with O RunddichtringO two in described annular concave seat.
In above-mentioned plunger multistage high-differential-pressure regulating valve, described annular groove has three, and wherein two annular grooves are positioned at filler spacer inwall, and another annular groove is positioned on filler spacer outer wall.
In above-mentioned plunger multistage high-differential-pressure regulating valve, between described valve gap and valve body, be provided with valve gap packing ring.
In above-mentioned plunger multistage high-differential-pressure regulating valve, be provided with packing ring one between described valve seat and trim ring, between valve seat and valve body, be provided with packing ring two.
Compared with prior art, this plunger multistage high-differential-pressure regulating valve overcomes the generation of the cavitation erosion of ordinary high pressure angle valve, flash distillation, cavitation phenomenon, has higher sealing, and can reduce noise, has good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of this plunger multistage high-differential-pressure regulating valve.
Fig. 2 is the partial enlarged drawing of Fig. 1.
In figure, 1, valve rod; 2, valve body; 3, bolt; 4, valve gap; 5, valve pocket; 6, inlet passage; 7, outlet passage; 8, valve seat; 9, valve cage; 10, trim ring; 11, spool; 12, helical spring; 13, packing holder; 14, O RunddichtringO one; 15, filler seat; 16, filler; 17, filler spacer; 18, Gland; 19, hold-down grid; 20, pressing plate stud; 21, O RunddichtringO two; 22, valve gap packing ring; 23, packing ring one; 24, packing ring two; 25, circulating window; 26, circular groove.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1 and Figure 2, this plunger multistage high-differential-pressure regulating valve comprises valve rod 1, valve body 2 and bolt 3 and is connected to valve gap 4 on valve body 2, and valve body 2 has valve pocket 5 and the inlet passage 6 and the outlet passage 7 that are communicated with valve pocket 5.Valve seat 8 is provided with bottom valve pocket 5, valve seat 8 is provided with the valve cage 9 with some circulating windows 25, valve cage 9 overcoat has trim ring 10, the multiple step plug 11 of plunger type is sliding combined with in valve cage 9, spool 11 have some circular grooves 26, spool 11 and valve rod 1 are connected, and valve rod 1 one end passes valve gap 4, and trim ring 10 upper end and valve gap 4 lean.On valve rod 1, cover has helical spring 12, and helical spring 12 one end and spool 11 lean, and the other end and valve gap 4 lean.Spool 11 offers the packing holder 13 of annular, packing holder 13 inner sleeve has O RunddichtringO 1.Valve rod 1 overlaps from bottom to up successively filler seat 15, filler 16, filler spacer 17, Gland 18, hold-down grid 19, and hold-down grid 19 is fixed on valve gap 4 by pressing plate stud 20, and described filler seat 15, filler 16, filler spacer 17 are all positioned at valve gap 4.
Specifically, valve cage 9 have 5 circulating windows 25 and circulating window 25 is topmost connected with outlet passage 7.Spool 11 have 4 circular grooves 26.Filler 16 is positioned at filler spacer about 17 two ends.Filler spacer 17 sleeve-shaped and have some annular concave seats ringwise, is provided with O RunddichtringO 2 21 in annular concave seat.Annular groove has three, and wherein two annular grooves are positioned at filler spacer 17 inwall, and another annular groove is positioned on filler spacer 17 outer wall.Valve gap packing ring 22 is provided with between valve gap 4 and valve body 2.Be provided with packing ring 1 between valve seat 8 and trim ring 10, between valve seat 8 and valve body 2, be provided with packing ring 2 24.
Working principle: valve cage 9, trim ring 10, valve seat 8 compress in the body 2 by valve gap 4, and spool 11 can move up and down in valve cage 9, valve cage 9 has multistage circulating window 25, and every one-level circulating window 25 height is identical with valve total kilometres.Spool 11 also there is corresponding circular groove 26 corresponding with it, like this when spool 11 moves up and down, gap between spool 11 to valve cage 9 can corresponding change, fluid vena contracta is long-pending can change, fluid flows through each vena contracta can there is pressure drop, and stagnation pressure reduces to every grade of pressure drop sum, this just makes overall presure drop be distributed between valve cage 9 at different levels, every one-step valve core 11 produces a part of pressure drop, the pressure drop that every one-step valve core 11 produces all is no more than the critical value of vena contracta place pressure reduction, or would not reduce and cavitate, the possibility of cavitation, like this, whole high-pressure angle valve or would not reduce and cavitates, flash distillation, the possibility of cavitation phenomenon, simultaneously because flow velocity reduces, noise also can reduce.
The principle utilize kinetic energy loss, reducing pressure step by step, overall presure drop is made to be distributed between the circulating window 25 of valve cage 9 at different levels, every one-step valve core 11 produces a part of pressure drop, the pressure drop that every one-step valve core 11 produces all is no more than the critical value of vena contracta place pressure reduction, would not or reduce cavitate, the possibility of cavitation, like this, whole high-differential-pressure regulating valve would not or minimizing is cavitated, flash distillation, cavitation phenomenon possibility, simultaneously because flow velocity reduces, noise also can reduce.Helical spring 12 is enclosed within valve rod 1, plays certain buffer function, when preventing spool 11 to be subject to hydrodynamic pressure, clashes into valve gap 4.In addition, on spool 11, cover has O RunddichtringO 1, and anti-fluid enters into the cavity between spool 11 and valve gap 4, improves sealing effect; And filler 16 on valve rod 1 and filler spacer 17 can effectively anti-fluid overflow from the gap of valve rod 1 with valve gap 4, coordinate with O RunddichtringO 1, play double sealing effect.
The utility model is applicable to the occasion of valve usage requirement harshness, particularly power plant, sky grade requirement High Pressure Difference, high pressure pipeline on use, can avoid or reduce cavitate, flash distillation, cavitation phenomenon possibility, and reduce noise, the occupational health of favourable operator and pollution from environmental noise improve.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (8)
1. a plunger multistage high-differential-pressure regulating valve, comprise valve rod, valve body and bolt are connected to the valve gap on valve body, it is characterized in that, described valve body has valve pocket and the inlet passage and the outlet passage that are communicated with valve pocket, valve seat is provided with bottom described valve pocket, valve seat is provided with the valve cage with some circulating windows, described valve cage overcoat has trim ring, the multiple step plug of plunger type is sliding combined with in described valve cage, described spool have some circular grooves, spool and valve rod are connected, valve rod one end passes valve gap, trim ring upper end and valve gap lean, on described valve rod, cover has helical spring, described helical spring one end and spool lean, the other end and valve gap lean, described spool offers the packing holder of annular, described packing holder inner sleeve has O RunddichtringO one, described valve rod overlaps from bottom to up successively filler seat, filler, filler spacer, Gland, hold-down grid, and described hold-down grid is fixed on valve gap by pressing plate stud, and described filler seat, filler, filler spacer are all positioned at valve gap.
2. a kind of plunger multistage high-differential-pressure regulating valve according to claim 1, is characterized in that, described valve cage has 5 circulating windows and circulating window is topmost connected with outlet passage.
3. a kind of plunger multistage high-differential-pressure regulating valve according to claim 2, is characterized in that described spool having 4 circular grooves.
4. a kind of plunger multistage high-differential-pressure regulating valve according to claim 3, it is characterized in that, described filler is positioned at the upper and lower two ends of filler spacer.
5. a kind of plunger multistage high-differential-pressure regulating valve according to claim 1 or 2 or 3 or 4, is characterized in that, filler spacer sleeve-shaped and have some annular concave seats ringwise, is provided with O RunddichtringO two in described annular concave seat.
6. a kind of plunger multistage high-differential-pressure regulating valve according to claim 5, it is characterized in that, described annular groove has three, and wherein two annular grooves are positioned at filler spacer inwall, and another annular groove is positioned on filler spacer outer wall.
7. a kind of plunger multistage high-differential-pressure regulating valve according to claim 6, is characterized in that, be provided with valve gap packing ring between described valve gap and valve body.
8. a kind of plunger multistage high-differential-pressure regulating valve according to claim 7, is characterized in that, be provided with packing ring one between described valve seat and trim ring, be provided with packing ring two between valve seat and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448117.1U CN204061919U (en) | 2014-08-08 | 2014-08-08 | A kind of plunger multistage high-differential-pressure regulating valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448117.1U CN204061919U (en) | 2014-08-08 | 2014-08-08 | A kind of plunger multistage high-differential-pressure regulating valve |
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| CN204061919U true CN204061919U (en) | 2014-12-31 |
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| CN201420448117.1U Expired - Fee Related CN204061919U (en) | 2014-08-08 | 2014-08-08 | A kind of plunger multistage high-differential-pressure regulating valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151555A (en) * | 2015-03-30 | 2016-11-23 | 安徽春辉仪表线缆集团有限公司 | A kind of end noise decompression regulating valve |
| CN110715108A (en) * | 2018-07-12 | 2020-01-21 | 费希尔控制产品国际有限公司 | Integrated non-plugging multi-stage valve trim |
| CN113108070A (en) * | 2021-05-08 | 2021-07-13 | 浙江理工大学 | Multistage pressure reduction string type liquid level regulating valve structure |
| CN114688261A (en) * | 2022-02-25 | 2022-07-01 | 中石化四机石油机械有限公司 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
-
2014
- 2014-08-08 CN CN201420448117.1U patent/CN204061919U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151555A (en) * | 2015-03-30 | 2016-11-23 | 安徽春辉仪表线缆集团有限公司 | A kind of end noise decompression regulating valve |
| CN110715108A (en) * | 2018-07-12 | 2020-01-21 | 费希尔控制产品国际有限公司 | Integrated non-plugging multi-stage valve trim |
| CN110715108B (en) * | 2018-07-12 | 2023-12-29 | 费希尔控制产品国际有限公司 | Integrated non-blocking multi-stage valve trim |
| CN113108070A (en) * | 2021-05-08 | 2021-07-13 | 浙江理工大学 | Multistage pressure reduction string type liquid level regulating valve structure |
| CN114688261A (en) * | 2022-02-25 | 2022-07-01 | 中石化四机石油机械有限公司 | Ultrahigh pressure safety throttle valve for testing high-pressure pump of petroleum drilling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20160808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |