CN209688202U - 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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- CN209688202U CN209688202U CN201920122349.0U CN201920122349U CN209688202U CN 209688202 U CN209688202 U CN 209688202U CN 201920122349 U CN201920122349 U CN 201920122349U CN 209688202 U CN209688202 U CN 209688202U
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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.The structural strength of the utility model meet the requirements and it is more compact and effectively mitigate valve weight, runner in valve body inlet endface is designed along valve interior wall tangential direction, 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 utility model 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 this utility model is exactly the shortcoming being directed in the presence of the above-mentioned prior art and provides a kind of structure
Compact, lighter in weight and low flow resistance, the light weight eccentric plug valve of working performance optimization.
The purpose of this utility model can be realized by following technique measures:
The low flow resistance light weight eccentric plug valve of the utility model includes valve body, the valve being assemblied on valve body by fastener
Lid；Valve body center is provided with several circumferential reinforcing ribs, several radial reinforcing ribs are provided at body base, in valve deck
Several reinforcing ribs have been disposed radially at valve deck inner wall.
Valve deck inner wall described in the utility model is arranged at reinforcing rib and wall thickness at reinforcing rib is arranged at wall thickness and body base
It is determined by following formula (1):
mm；(1)
The calculating formula of radial reinforcing rib thickness is such as at the reinforcing rib that is disposed radially at the valve deck inner wall and body base
Under:
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 utility modelδ 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 utility model at valve seal end surface side and valve body wall surface is continuous cumulative transition processing；In valve
Inlet end face at, tunnel inlets direction along valve interior wall tangential direction processing.
The beneficial effects of the utility model 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 is not being reduced
Under conditions of valve cover structure intensity, 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 the overall structure diagram of the utility model.
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 the valve deck inner wall radial reinforcing rib plate structural schematic diagram of the utility model.
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 the body base radial direction reinforcement of the utility model, 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 the valve body inlet end face inlet channel guiding and valve interior wall and the transition of valve seal end face of the utility model
Circumferential reinforcing rib schematic diagram in the middle part of processing 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 the Stress Linearization distribution map that the utility model analyzes valve body valve deck strength modification in specific example.
Specific embodiment
The utility model is further described below with reference to embodiment (attached drawing):
As shown in Figure 1, the low flow resistance light weight eccentric plug valve of the utility model includes valve body 6, pass through hexagonal fastening bolt
18 are assemblied in the connection place of the valve deck 8 on valve body 6, spool 5 and valve body 6 and valve deck 8 respectively in Lower shaft sleeve 3, lower sand prevention axle envelope
4 with Upper shaft sleeve 11, upper sand prevention axle envelope 10 and seal assembly 12,OThe common assembly of type circle 7, spool 5 can do circumferential direction around axis
Movement realizes working condition by the cooperation with valve body sealing surface.
The utility model is provided with several radial reinforcing ribs 2 at body base 20, and valve deck inner wall 19 has been disposed radially
Several reinforcing ribs 9,21 in the middle part of the valve body at several circumferential reinforcing ribs 1 of arrangement.
The valve flowing channel entrance and valve interior wall of the utility model carry out subtracting flow resistance optimization, and pass through finite element analysis software
Carry out 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
At the inlet end face 22 of valve, tunnel inlets direction is along the processing of valve interior wall tangential direction.
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 at stiffener plate 9 radially arranged at the valve deck inner wall 19 and body base 20 reinforce
The calculating formula (2) of 2 thickness of muscle 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
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 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；
At the inlet end face 22 of valve, tunnel inlets direction is along the processing of valve interior wall tangential direction.
The light weight eccentric plug valve of the utility model is by finite element method to the valve deck and valve body structure after Theoretical Design
Analysis is optimized, and meets 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 forward direction
Cloth hydraulic pressure test load 2.4MPa；
Carry out Stress Linearization analysis by the stress distribution that obtains to software, according to Stress Linearization analyze criterion for
It analyzes result and carries out safety evaluatio；
Below with reference to the utility model relates to the low flow resistance light weight eccentric plug valve example of DN150 be specifically described valve body valve deck
Optimization process；
The utility model relates to the low flow resistance of PN16DN150, 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；Institute
It statesd 1 =92.78 mm；
Due to the d1It is all larger than designed valve deck sized 21 With designed body sized 22 , then plate ruler added by valve deck
It is very little:
=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
In ANSYS and grid division, Young's modulus of elasticity 1.73e5 MPa, Poisson's ratio 0.3 are defined in attribute module, and fill to plug valve
The flange connections application of ligand is completely fixed constraint and valve body and valve deck inner wall applies positive uniformly distributed water pressure test load
2.44MPa calculates the maximum stress distribution that analysis obtains by software and 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 such as
Shown in Fig. 7, according to the following formula shown in Stress Linearization analysis criterion it is found thatσ m Withσ l , andσ m +σ l It is all satisfied valve body and valve deck
Etc. structures requirement, and obtain the structural strength of valve deck and valve body for safety.
Or
Or
Or；
In above formulaσ m - primary general membrane stress；σ 1 - local membrane stress；σ b - primary bending stress；Q- bis-
Secondary stress；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 |
|---|---|---|---|
| CN201920122349.0U CN209688202U (en) | 2019-01-24 | 2019-01-24 | A kind of low flow resistance light weight eccentric plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920122349.0U CN209688202U (en) | 2019-01-24 | 2019-01-24 | A kind of low flow resistance light weight eccentric plug valve |
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| Publication Number | Publication Date |
|---|---|
| CN209688202U true CN209688202U (en) | 2019-11-26 |
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ID=68599948
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920122349.0U Active CN209688202U (en) | 2019-01-24 | 2019-01-24 | A kind of low flow resistance light weight eccentric plug valve |
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| CN (1) | CN209688202U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555887A (en) * | 2019-01-24 | 2019-04-02 | 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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2019
- 2019-01-24 CN CN201920122349.0U patent/CN209688202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555887A (en) * | 2019-01-24 | 2019-04-02 | 河南省高山阀门有限公司 | A kind of low flow resistance light weight eccentric plug valve |
| CN109555887B (en) * | 2019-01-24 | 2024-02-09 | 河南省高山阀门有限公司 | Low flow resistance light eccentric plug valve |
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