CN109555887A - A kind of low flow resistance light weight eccentric plug valve - Google Patents
A kind of low flow resistance light weight eccentric plug valve Download PDFInfo
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- CN109555887A CN109555887A CN201910067949.6A CN201910067949A CN109555887A CN 109555887 A CN109555887 A CN 109555887A CN 201910067949 A CN201910067949 A CN 201910067949A CN 109555887 A CN109555887 A CN 109555887A
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- valve
- valve body
- wall
- flow resistance
- light weight
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 8
- 238000013461 design Methods 0.000 claims description 18
- 239000003351 stiffener Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 238000005266 casting Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 210000004907 gland Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013433 optimization analysis Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 239000002699 waste material 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Lift Valve (AREA)
Abstract
A kind of low flow resistance light weight eccentric plug valve, including valve body (6), the valve deck (8) being assemblied in by fastener on valve body (6), it is characterized by: several circumferential reinforcing ribs (1) are provided at (21) in the middle part of valve body, it is provided with several radial reinforcing ribs (2) at body base (20), has been disposed radially several reinforcing ribs (9) at the valve deck inner wall (19) of valve deck.Structural strength of the invention is met the requirements and more compact and effectively mitigate valve weight, and the runner in valve body inlet endface is designed along valve interior wall tangential direction, and the wall thickness at valve seal end face and valve interior wall carries out gradual transition processing, to reduce runner flow resistance.
Description
Technical field
The present invention relates to a kind of plug valves for being mainly used in the fields such as indusqtrial water supply, urban sewage, in particular to a kind of
Low flow resistance light weight eccentric plug valve.
Background technique
The valve sealing face center of eccentric stopcock and the design of cock axis of rotation have an eccentricity.Utilize eccentric motion original
Reason, it is tighter to be cured rotation for cock and valve seat when closing, and cock is detached from rapidly with valve seat when unlatching.General bias in modern industrial production
Plug valve, since structure size is longer, runner undergauge causes the intracorporal erosion corrosion of valve and flows through fluid head loss increasing,
And the universal wall thickness of product according to existing Specification Design is bigger than normal, causes valve overall weight bigger than normal, and in casting process due to
Valve deck and valve body part thickness are easy to produce greatly thermal center.As 2442049 U of the patent CN structure valve body provided and valve cover structure are thick
Greatly, runner undergauge and runner is longer causes runner flow resistance to increase.As 203176491 U of patent CN provide structure, in valve
The position Gai Hou great, which opens up casting hole, reduces thermal center mitigation weight, does not optimize processing to the structural strength of valve deck, works as cock
When operating pressure inside valve is bigger than normal, structural strength not can guarantee.
Summary of the invention
The purpose of the present invention be exactly the shortcoming being directed in the presence of the above-mentioned prior art and provide it is a kind of it is compact-sized,
Lighter in weight and low flow resistance, the light weight eccentric plug valve of working performance optimization.
The purpose of the present invention can be realized by following technique measures:
Low flow resistance light weight eccentric plug valve of the invention includes valve body, the valve deck being assemblied on valve body by fastener；In valve body
Center is provided with several circumferential reinforcing ribs, several radial reinforcing ribs is provided at body base, in the valve deck inner wall of valve deck
Place has been disposed radially several reinforcing ribs.
Wall thickness is set at reinforcing rib at wall thickness and body base at heretofore described valve deck inner wall setting reinforcing rib under
Formula (1) determines:
mm；(1)
The calculating formula of the reinforcing rib and radial reinforcing rib thickness at body base that are disposed radially at the valve deck inner wall is as follows:
mm；(2)
In formula:nThe quantity of-gusset；
pThe born pressure of-plate or load, MPa；
p c - design pressure, mm；
D i - the cylinder internal diameter being connected with circle plate, mm；
D c - circle plate calculated diameter, mm；
[σ]tThe allowable stress of plate material, MPa under-design temperature；
C- add allowance, mm；
d 1 ,d 2 - stiffener plate flat-plate theory schematic diagram institute dimensioning, mm；
δ b The rear valve body or valve deck design wall thickness of-reinforcement, mm；
δThe design thickness of-valve body or valve deck stiffener plate, mm；
Valve body center wall thickness in the present inventionδ e Calculating formula (3) is as follows:
mm；(3)
Valve body center circumferential direction reinforcement heighth e Calculating formula (4) is as follows:
mm；(4)
Valve body center circumferential direction reinforcing rib wall thickness beCalculating formula (5) is as follows:
mm；(5)
In formula:A s ’ --- valve body plays booster action area, mm2；Its calculating formula are as follows:
；
L s --- the spacing of adjacent stiffening ring, mm；Its calculating formula are as follows:
；
D i —Valve body middle cylinder internal diameter, mm；
L- valve body height, mm；
E- valve body material elasticity modulus, MPa；
pThe born pressure of-valve body cylinder side wall or load, MPa；
D 0 - valve body middle cylinder overall diameter, mm；
Wall thickness of the present invention at valve seal end surface side and valve body wall surface is continuous cumulative transition processing；In the input end of valve
At face, tunnel inlets direction is along the processing of valve interior wall tangential direction.
Beneficial effects of the present invention are as follows:
1. the wall thickness of pair prior art condition lower valve body and valve deck and structure are handled by stiffener plate, valve body and valve are not being reduced
Under conditions of lid structural strength, about 20% is reduced compared to traditional cock valve body valve deck weight.
2. the runner direction of valve body inlet endface is along valve interior wall tangential direction, and in valve seal end face and valve body
Wall uses transition processing, and flow regime is steady when enabling flow across valve body, reduces impingment corrosion.
3. valve body is compact-sized, valve body interplanar distance is short, shortens residence time of the fluid in runner, and fluid flow rate mentions
Height reduces contamination precipitation.
4. avoid valve deck and valve body should be the thick big generation heat in part in casting process under above-mentioned technological improvement
Section prevents the generation of the casting flaws such as shrinkage porosite, reduces production difficulty and reduces waste product rate.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
It is marked in Fig. 1 and corresponding title is as follows: (1) being the circumferential reinforcing rib in the middle part of valve body, (2) are the diameters of body base
To reinforcing rib, (3) are Lower shaft sleeves, and (4) are lower sand prevention axle envelopes, and (5) are spools, and (6) are valve bodies, and (7) areOType circle, (8) are valves
Lid, (9) are the stiffener plates that valve deck inner wall is arranged radially, and (10) are upper sand prevention axle envelopes, and (11) are Upper shaft sleeves, and (12) are sealings
Component, (13) are glands, and (14) are fastening bolt components, and (15) are driver racks, and (16) are bolt and nut components,
It (17) is hex bolts, (18) are hexagonal fastening bolts.
Fig. 2 is valve deck inner wall radial reinforcing rib plate structural schematic diagram of the invention.
Title is marked and corresponded in Fig. 2 are as follows: (9) is the stiffener plate that valve deck inner wall is arranged radially.
Fig. 3 is the cross-sectional view in valve deck section.
Title is marked and corresponded in Fig. 3 are as follows: (19) is valve deck inner wall.
Fig. 4 is body base radial direction reinforcement of the invention, the circumferential reinforced structure schematic diagram in valve body middle part.
Title is marked and corresponded in Fig. 4 are as follows: (1) is the circumferential reinforcing rib in the middle part of valve body, (2) are that the radial direction of body base adds
Strengthening tendons, (20) are body bases, and (21) are in the middle part of valve body.
Fig. 5 is body base radial reinforcing rib plate flat-plate theory schematic diagram.
Fig. 6 is valve body inlet end face inlet channel guiding and valve interior wall and valve seal end face transition position of the invention
Circumferential reinforcing rib schematic diagram in the middle part of reason and valve body.
Title is marked and corresponded in Fig. 6 are as follows: (23) is valve seal end surface side and valve flowing channel transition wall surface, (22) are valves
The inlet end face of body runner.
Fig. 7 is that the present invention analyzes stress distribution to finite element strength verifying after valve body valve deck Theoretical Design in specific example
Figure.
Fig. 8 is the Stress Linearization distribution map that the present invention analyzes valve body valve deck strength modification in specific example.
Specific embodiment
The present invention is further described below with reference to embodiment (attached drawing):
As shown in Figure 1, low flow resistance light weight eccentric plug valve of the invention includes valve body 6, it is assemblied in by hexagonal fastening bolt 18
The connection place of valve deck 8 on valve body 6, spool 5 and valve body 6 and valve deck 8 is respectively in Lower shaft sleeve 3, lower sand prevention axle envelope 4 and upper axis
Set 11, upper sand prevention axle envelope 10 and seal assembly 12,OThe common assembly of type circle 7, spool 5 can do circumferential movement around axis, lead to
It crosses the cooperation with valve body sealing surface and realizes working condition.
The present invention is provided with several radial reinforcing ribs 2 at body base 20, and valve deck inner wall 19 has been disposed radially several
Reinforcing rib 9,21 in the middle part of the valve body at several circumferential reinforcing ribs 1 of arrangement.
Valve flowing channel entrance and valve interior wall of the invention carries out subtracting flow resistance optimization, and is carried out by finite element analysis software
Intensive analysis verifying；Wall thickness i.e. at valve seal end surface side and valve body wall surface 23 is continuous cumulative transition processing；In valve
Inlet end face 22 at, tunnel inlets direction along valve interior wall tangential direction processing.
Fig. 2,3 show several reinforcing ribs 9 of radial equipartition at valve deck inner wall 19, and Fig. 4,5 show body base 20
Several radial reinforcing ribs 2 of cloth are come by following formula (1) with wall thickness at 20 reinforcement of body base at 19 reinforcement of valve deck inner wall true
It is fixed:
mm；(1)
As shown in figure 5, radial reinforcing rib 2 at stiffener plate 9 radially arranged at the valve deck inner wall 19 and body base 20
The calculating formula (2) of thickness is as follows:
mm；(2)
In formula:nThe quantity of-gusset；
pThe born pressure of-plate or load, MPa；
p c - design pressure, mm；
D i - the cylinder internal diameter being connected with circle plate, mm；
D c - circle plate calculated diameter, mm；
[σ]tThe allowable stress of plate material, MPa under-design temperature；
C- add allowance, mm；
d 1 ,d 2- stiffener plate flat-plate theory schematic diagram institute dimensioning, mm；
δ b The rear valve body or valve deck design wall thickness of-reinforcement, mm；
δThe design thickness of stiffener plate, mm at-valve body or valve deck；
As shown in Figure 1 and Figure 4, in the middle part of the valve body 21 arrangements circumferential reinforcing ribs 1,21 in the middle part of valve body at needed wall thicknessδ e It calculates
Formula (3) is as follows:
mm；(3)
Circumferential direction reinforcing rib (1) height at (21) in the middle part of valve bodyh e Calculating formula (4) is as follows:
mm；(4)
Circumferential direction reinforcing rib (1) wall thickness at (21) in the middle part of valve bodyb e Calculating formula (5) is as follows:
mm；(5)
In formula:A s ’ --- valve body plays booster action area, mm2；Its calculating formula are as follows:
；
L s --- the spacing of adjacent stiffening ring, mm；Its calculating formula are as follows:
；
D i —Valve body middle cylinder internal diameter, mm；
L- valve body height, mm；
L S - adjacent circumferential distance between stiffening rings, mm；
D 0 - valve body middle cylinder overall diameter, mm；
pThe born pressure of-valve body cylinder side wall or load, MPa；
E- valve body material elasticity modulus, MPa；
As shown in fig. 6, the wall thickness at valve seal end surface side and valve body wall surface 23 is designed as continuous cumulative transition processing；In valve
At the inlet end face 22 of door, tunnel inlets direction is along the processing of valve interior wall tangential direction.
Light weight eccentric plug valve of the invention by finite element method to after Theoretical Design valve deck and valve body structure carry out
Optimization analysis, and meet domestic and international relevant design specification.
By the Simplified Three-dimensional entire assembly model of valve deck, valve body, gland, driver rack, to imported into finite element analysis soft
In part ANSYS and grid division；
Statics resilient property module definition Young's modulus of elasticity 1.73e5 MPa, Poisson's ratio 0.3；
Constraint and valve body are completely fixed to the flange connections application of cock valve assembly and valve deck inner wall applies positive equal water distribution
Press test load 2.4MPa；
Stress Linearization analysis is carried out by the stress distribution obtained to software, criterion is analyzed for analysis according to Stress Linearization
As a result safety evaluatio is carried out；
Valve body valve deck is specifically described below with reference to the low flow resistance light weight eccentric plug valve example of DN150 of the present invention to optimize
Journey；
The low flow resistance of PN16DN150 of the present invention, the design pressure of light weight eccentric plug valveP C =1.6MPa, [σ]65℃=
80MPa,d 2 =60mm,Dc=260mm,D i =224mm,n=4, designed valve deckd 21 =90 mm, valve bodyd 22 =60 mm；It is describedd 1 =
92.78 mm；
Due to the d1It is all larger than designed valve deck sized 21 With designed body sized 22 , then panel size added by valve deck:
=11.56mm；Rounding isδ b1 =12mm；
Panel size needed for valve body:
=11.56mm；Rounding isδ b2 =12mm；
Valve body institute stiffened panel thickness:
mm；Rounding is 10mm；
Wall thickness after circumferential reinforcement is strengthened in the middle part of valve body:
The height of reinforcing rib added by circumferential direction in the middle part of valve body:
The minimum thickness of reinforcing rib added by circumferential direction in the middle part of valve body:
The three-dimensional entire assembly model of valve deck, valve body, gland, driver rack is imported into finite element analysis software ANSYS
In and grid division, define Young's modulus of elasticity 1.73e5 MPa, Poisson's ratio 0.3 in attribute module, and to cock valve assembly
Flange connections application be completely fixed constraint and valve body and valve deck inner wall applies positive uniformly distributed water pressure test load 2.44MPa,
By the stress distribution that is obtained to software as shown in fig. 7, maximum stress is located at body base central protrusion position and radial reinforcement
Junction, minimum stress are located at valve deck outer rim；
Stress Linearization analysis is carried out according to stress distribution and obtains analysis result as shown in figure 8, stress shown according to the following formula
Analysis by Linearization criterion it is found thatσ m Withσ l , andσ m +σ l Be all satisfied the structures requirement such as valve body and valve deck, and obtain valve deck with
The structural strength of valve body is safety.
Or
Or
Or；
In above formulaσ m - primary general membrane stress；σ 1 - local membrane stress；σ b - primary bending stress；Q- secondary answer
Power；S- material allowable stress.
Claims (5)
1. a kind of low flow resistance light weight eccentric plug valve, including valve body (6) are assemblied in the valve deck on valve body (6) by fastener
(8), it is characterised in that: be provided with several circumferential reinforcing ribs (1) at (21) in the middle part of valve body, be arranged at body base (20)
There are several radial reinforcing ribs (2), has been disposed radially several reinforcing ribs (9) at the valve deck inner wall (19) of valve deck.
2. low flow resistance light weight eccentric plug valve according to claim 1, it is characterised in that: valve deck inner wall (19) setting
Wall thickness is determined with wall thickness at reinforcing rib is arranged at body base (20) by following formula (1) at reinforcing rib:
mm；(1)
Radial reinforcing rib (2) thickness at the reinforcing rib (9) being disposed radially at the valve deck inner wall (19) and body base (20)
Calculating formula (2) it is as follows:
mm；(2)
In formula: n-gusset quantity；
pThe born pressure of-plate or load, MPa；
p c- design pressure, mm；
D i- the cylinder internal diameter being connected with circle plate, mm；
D c - circle plate calculated diameter, mm；
[σ]tThe allowable stress of plate material, MPa under-design temperature；
C- add allowance, mm；
d 1 ,d 2 - stiffener plate flat-plate theory schematic diagram institute dimensioning, mm；
δ b The rear valve body or valve deck design wall thickness of-reinforcement, mm；
δThe design thickness of-valve body or valve deck stiffener plate, mm.
3. low flow resistance light weight eccentric plug valve according to claim 1, it is characterised in that: wall thickness at (21) in the middle part of valve bodyδ e
Calculating formula (3) is as follows:
mm；(3)
Circumferential direction reinforcing rib (1) height at (21) in the middle part of valve bodyh e Calculating formula (4) is as follows:
mm；(4)
Circumferential direction reinforcing rib (1) wall thickness b at (21) in the middle part of valve bodyeCalculating formula (5) is as follows:
mm；(5)
In formula:A s ’ --- valve body plays booster action area, mm2；Its calculating formula are as follows:
；
Ls--- the spacing of adjacent stiffening ring, mm；Its calculating formula are as follows:
；
D i —Valve body middle cylinder internal diameter, mm；
L- valve body height, mm；
E- valve body material elasticity modulus, MPa；
pThe born pressure of-valve body cylinder side wall or load, MPa；
D 0 - valve body middle cylinder overall diameter, mm.
4. low flow resistance light weight eccentric plug valve according to claim 1, it is characterised in that: in valve seal end surface side and valve
Wall thickness at body wall face (23) is continuous cumulative transition processing.
5. low flow resistance light weight eccentric plug valve according to claim 1, it is characterised in that: in the inlet end face (22) of valve
Place, tunnel inlets direction is along the processing of valve interior wall tangential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067949.6A CN109555887B (en) | 2019-01-24 | 2019-01-24 | Low flow resistance light eccentric plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910067949.6A CN109555887B (en) | 2019-01-24 | 2019-01-24 | Low flow resistance light eccentric plug valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109555887A true CN109555887A (en) | 2019-04-02 |
| CN109555887B CN109555887B (en) | 2024-02-09 |
Family
ID=65873484
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910067949.6A Active CN109555887B (en) | 2019-01-24 | 2019-01-24 | Low flow resistance light eccentric plug valve |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972436A (en) * | 1995-09-05 | 1997-03-18 | Hitachi Valve Kk | Eccentric rotary valve |
| CN204187030U (en) * | 2014-09-18 | 2015-03-04 | 自贡工业阀门制造有限公司 | A kind of stopcock |
| CN108286614A (en) * | 2018-03-08 | 2018-07-17 | 河南省高山阀门有限公司 | A kind of low flow resistance long-life elastic packing eccentric stopcock |
| CN108612862A (en) * | 2018-07-19 | 2018-10-02 | 开维喜阀门集团有限公司 | It is a kind of can on-line maintenance eccentric half-ball valve |
| CN209688202U (en) * | 2019-01-24 | 2019-11-26 | 河南省高山阀门有限公司 | A kind of low flow resistance light weight eccentric plug valve |
-
2019
- 2019-01-24 CN CN201910067949.6A patent/CN109555887B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972436A (en) * | 1995-09-05 | 1997-03-18 | Hitachi Valve Kk | Eccentric rotary valve |
| CN204187030U (en) * | 2014-09-18 | 2015-03-04 | 自贡工业阀门制造有限公司 | A kind of stopcock |
| CN108286614A (en) * | 2018-03-08 | 2018-07-17 | 河南省高山阀门有限公司 | A kind of low flow resistance long-life elastic packing eccentric stopcock |
| CN108612862A (en) * | 2018-07-19 | 2018-10-02 | 开维喜阀门集团有限公司 | It is a kind of can on-line maintenance eccentric half-ball valve |
| CN209688202U (en) * | 2019-01-24 | 2019-11-26 | 河南省高山阀门有限公司 | A kind of low flow resistance light weight eccentric plug valve |
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| Publication number | Publication date |
|---|---|
| CN109555887B (en) | 2024-02-09 |
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