CN204284429U - A kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel - Google Patents
A kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel Download PDFInfo
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- CN204284429U CN204284429U CN201420678570.1U CN201420678570U CN204284429U CN 204284429 U CN204284429 U CN 204284429U CN 201420678570 U CN201420678570 U CN 201420678570U CN 204284429 U CN204284429 U CN 204284429U
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Abstract
A kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel, solves and improves the technical problem such as external pressure vessel bearing capacity and Security.The temperature difference stress that it utilizes the inside and outside wall temperature difference dt of container to be formed offsets the mechanical stress that part operation external pressure p causes, to reduce and average stress distribution, thus enhancing bearing capacity, saving more safer, convenient, reliable than mechanical prestress method self-reinforcing pressure vessel, designs more flexible.Its drip irrigation device is: with
,
feature limits characteristic parameter k, p, E, a, u, s
y, dt size and adjust according to actual needs; With
during as the temperature difference, bearing capacity is maximum:
, thickness is minimum.Wherein E be the Young's modulus of container material, a thermal expansion coefficient that is container material, u be container material Poisson's ratio, s
yfor yield strength, the k=r of container material
o/ r
i, r
ifor container inner wall radius surface, r
ofor container outer wall radius surface, dt
nfor optimal temperature difference, p
nfor best bearing capacity.
Description
Technical field
The utility model relates to a kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel, and technical field comprises the fields such as machinery, chemical industry, pharmacy, the energy, material, food, metallurgy, oil, building, Aeronautics and Astronautics, weapons.
Background technique
Pressurized container is widely used in all trades and professions, as departments such as machinery, chemical industry, pharmacy, the energy, material, food, metallurgy, oil, building, Aeronautics and Astronautics, weapons, is the key of these industrial departments, special equipment.The pressure that pressurized container bears have interior pressure and external pressure point, pressurized form is different, and stress distribution is totally different.The utility model relates to external pressure vessel.The main body overwhelming majority of pressurized container is cylinder, and when cylinder bears working pressure, the stress in wall is very uneven, as shown in Figure of description 4.If press maximum stress design pressure container, its wall thickness can be made very large, and wall thickness greatly not only wastes material, resource, fund, increases cost, also has potential safety hazard.If can manage to reduce the stress in container wall, just can improve vessel strength, save material, reduce costs, improve Security and the Economy of pressurized container.The method reducing stress is a lot, as self intensification technology be namely reduce and average stress, raising pressurized container bearing capacity and Security thereof important and effective means.The concrete grammar of pressurized container self intensification has again a lot, such as, before container comes into operation, larger mechanical pressure is applied to it, its internal layer portion of material is made to produce plastic deformation, outer section material is still elastic state, after removal mechanical pressure, just in container wall, produce mechanical prestress (residual stress): internal layer portion of material is pressure stress, outer section material is tensile stress.The stress that mechanical prestress and container operation pressure cause is superimposed can reduce stress.Because external pressure vessel nearly internal face place pressure stress is very large, the temperature difference stress that container external heat (outside wall temperature is higher than inner wall temperature) produces is then internal face is tensile stress, therefore the utility model adopts external heat temperature difference prestressing force self-strengthening method to construct a kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel, this method can reduce the stress in wall greatly, improves bearing capacity.The inside and outside wall temperature difference of pressurized container is caused by the operational difference of container itself, or heats its inside and outside wall or cool and cause before container comes into operation.Temperature difference prestressed pressure container is more safer than mechanical prestress pressurized container, convenient, reliable, save, flexibly, because (1) produce prestressed method by temperature difference stress to there is not medium of exerting pressure, therefore not dangerous, do not need expensive hydraulic press etc. to exert pressure equipment yet; (2) control of the temperature difference is comparatively easy, and thus the size of temperature difference stress and uniformity thereof are easily guaranteed; (3) once temperature difference stress is excessive, owing to there is not pressure medium, therefore unlikelyly as mechanical stress, the catastrophic failures such as pressurized container blast are caused.
Summary of the invention
The purpose of this utility model is to provide a kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel.
The utility model solves the technological scheme that its technical problem adopts: construct a kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel, it is characterized in that: the inside and outside wall of described pressurized container exists temperature difference, and internal face temperature is
t i, outer wall temperature is
t o, the temperature difference
dt=
t o-
t i,
t o>
t i, be called external heat; The temperature difference makes pressurized container wall produce temperature difference prestressing force, and total stress during described pressurized container work is that temperature difference prestressing force and mechanical stress are superimposed, described mechanical stress finger pressure container work pressure
pthe stress produced, described pressurized container working pressure
pfor external pressure; Described internal pressure vessel walls radius surface is
r i, outer wall radius is
r o; Described pressurized container, under the effect of temperature difference prestressing force, is in elastic state, namely
dt≤
dt c,
dt cfor temperature difference prestressing force has just made internal pressure vessel walls face produce the temperature difference of surrender, be called critical temperature difference,
; Wherein
efor container material Young's modulus,
afor container material thermal expansion coefficient,
ufor container material Poisson's ratio,
s yfor container material yield strength,
kfor the footpath ratio of container,
k=
r o/
r i.Described temperature difference is caused by the operating temperature of pressurized container itself, or heats the inside and outside wall of pressurized container or cool and cause.The physical dimension of this pressurized container, i.e. footpath ratio
k, bearing capacity
p/
s y, material property factor (
e,
a,
u,
s y), the temperature difference
dtbetween with
or
relation constraint, pressurized container wall thickness
b=
r o-
r i=
r i(
k-1);
k,
p,
e,
a,
u,
s y,
dtsize adjust according to actual needs, combine, mate; Respectively meet meaning the same.The temperature difference is defined as
, bearing capacity is defined as
,
dt nbe called optimal temperature difference,
p nbe called the best or most high bearing capacity, all the other symbols are the same.
The beneficial effects of the utility model and advantage are: poor in pressurized container inside and outside wall formation temperature, the temperature difference stress produced by the temperature difference offsets the mechanical stress of a part caused by its operation pressure, with its stress distribution of homogenizing, thus strengthen its bearing capacity, to form a kind of temperature difference prestressing force self-reinforcing pressure vessel.For making constructed pressurized container science, advanced person, to reach optimum efficiency, the utility model provides the footpath ratio of constructed pressurized container
k, bearing capacity
p/
s y, material property factor (
e,
a,
u,
s y), the temperature difference
dtbetween the concrete technological scheme such as the constraint rule that should follow, as critical temperature difference, optimal temperature difference, the best or most high bearing capacity etc.All the other beneficial effects and advantage are as described in " background technique " end.
Accompanying drawing explanation
Fig. 1 is the plan view of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel cylindrical shell.
Fig. 2 is the plan view of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel cylindrical shell.
Fig. 3 is embodiment 1 temperature difference stress distribution map.
Fig. 4 is embodiment 1 total stress distribution map.
Fig. 5 is
k~
i,
k~
n,
k~
zgraph of a relation.
Fig. 6 is bearing capacity comparison diagram.
Embodiment
Provide the scientific basis constructing this self-reinforcing pressure vessel below, and provide enforcement example in conjunction with these theories.
The main body overwhelming majority of pressurized container is cylinder, if the arbitrary radius of barrel is
rthe temperature at place is
t, inside and outside wall temperature is respectively
t i,
t o, the temperature difference
dt=
t o-
t i>0, the symbol of subscripting i, o represents the value on inside and outside wall respectively; The inside and outside radius of cylindrical pressure vessel is respectively
r i,
r o, container is by external pressure
p, see Figure of description 1.
By analysis, studying, there is the temperature difference in the inside and outside wall of cylindrical pressure vessel
dttime, in wall, (radius is at any point place
r) temperature difference stress be:
(1)
Wherein,
s r t,
s t t,
s z t-radial direction, hoop, axial temperature difference stress, MPa;
p t-thermal force, Mpa,
;
ethe Young's modulus of elasticity of-pressure vessel material, Mpa;
athe thermal expansion coefficient of-pressure vessel material, ° C
-1;
uthe Poisson's ratio of-pressure vessel material, dimensionless;
dtthe temperature difference of the inside and outside wall of-pressurized container, ° C,
dt=
t o-
t i,
dt>0;
kthe footpath ratio of-pressurized container, dimensionless,
k=
r o/
r i;
k r-
k r=
r o/
r, dimensionless;
x-relative position,
x=
r/
r i, dimensionless.
No matter interior heating or external heat, in cylindrical wall, any point has:
s r t+
s t t=
s z t(2)
The inside and outside wall temperature difference stress of pressurized container is:
(3)
During external heat,
s z t>
s t t , namely
s r t>0.No matter interior heating or external heat, internal face temperature difference stress absolute value is greater than outer wall temperature difference stress absolute value, and
s ri t=0, therefore, along with |
dt| increase, always internal face is first surrendered.
The Young's modulus of [example] general steel is
e=2 × 10
5mPa, Poisson's ratio is
u=0.3, thermal expansion coefficient is
a=1.5 × 10
-5° C
-1if,
dt=100 ° of C, then
p t=214.2857MPa.
(wherein, external pressure vessel elastic mechanical stress be
s r p,
s t p,
s z p-radial direction, hoop, axial mechanical stress, MPa)
、
、
(4)
From formula (4), external pressure vessel nearly inwall place produces very large pressure stress, does not take Self-enhancement treatment technology, just dangerous.During outer press operation, because mechanical stress meets contrary with external heat temperature difference stress, therefore, external heat is conducive to reducing and average stress.Therefore the utility model specially discuss external pressure, external heat (
dt>0) technical measures and scheme.
When
s zi t-
s ri t=
s ti t=
s ytime, container inner wall face starts surrender, obtains the internal face initial yield temperature difference, be called critical temperature difference by formula (3)
dt c:
(5)
Wherein
s yfor the yield strength of pressure vessel material,
.
dt<
dt ctime, temperature difference stress does not cause container to produce surrender.Along with the temperature difference increases, when
dt=
dt ctime, internal face starts surrender.
Container wall is thicker, and it is less that internal face starts to surrender the required temperature difference,
kwhen=1,
i=2;
kduring → ∞,
i→ 1.Thermal force when surrendering by formula (4) obtains internal face, is called critical heat load
.
Temperature difference stress is called total stress with superposing of mechanical stress, and when cylindrical pressure vessel is by external pressure pressure, total stress is
(6)
In formula,
s r,
s t,
s z-radial direction, hoop, axial total stress, MPa.
Research shows, limits
s ri-
s ti≤
s ywith
s to>=-
s ythe safety of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel can be ensured.
(7)
Internal face,
x=1:
(8)
Outer wall,
x=
k:
(9)
Order
s ri-
s ti≤
s yobtain bearing capacity
p/
s y:
(10)
Or
(10a)
Formula (10) or (10b) show,
dtlarger, bearing capacity or allowable load
p 1/
s ylarger.
Order
obtain bearing capacity
p/
s y:
(11)
Or
(11a)
Simultaneously formula (11), (12) ensure
s ri-
s ti≤
s ywith
s to>=-
s ytime each parameter (
e,
a,
u,
s y,
k,
dt,
p) between relation.Generally, after material is determined,
e,
a,
u,
s ynamely determine, therefore formula (10), (11) can be used for determining
k,
dt,
p, basic principle is:
kget the large person of two formula gained,
pget the little person of two formula gained,
dtpreferably get the little person of two formula gained.
Embodiment 1, and certain production process needs container outer wall temperature 40 ° C, pressure-bearing 150Mpas higher than inner wall temperature, and how can the structure characteristic of container just meet the demands?
e,
a,
uas example (lower same),
s y=350Mpa.
Obtained by formula (10)
k=1.728071, obtained by formula (11)
k=1.814263.Construction of pressure vessel feature is
k=1.814263,
dt=40 ° of C,
p=150Mpa, its temperature difference stress and total stress are shown in Figure of description 3,4.
Embodiment 2, and certain production process needs container outer wall temperature 50 ° Cs higher than inner wall temperature, and container footpath ratio is 3, and how can the structure characteristic of container just meet the demands?
s y=350Mpa.
Obtained by formula (10)
p=219.3537Mpa, is obtained by formula (11)
p=223.4081Mpa.Construction of pressure vessel feature is
k=3,
dt=50 ° of C,
p=219.3537Mpa.
Embodiment 3, and somewhere needs a footpath ratio
k=3.5, the pressurized container of pressure-bearing 200 Mpa,
s y=350MPa, what kind of technical characterstic should the pressurized container that construct have?
If do not make Self-enhancement treatment, its bearing capacity of such container is only
p e=160.7143MPa.
Obtained by formula (10)
dt=28.94143 ° of C, are obtained by formula (11)
dt=86.07741 ° of C.Construction of pressure vessel feature is
k=3.5,
dt=28.94143 ° of C,
p=200Mpa; Or
k=3.5,
dt=86.07741 ° of C,
p=200Mpa.
Above method is not also best, for obtaining best-of-breed technology scheme, and order
p 1=
p 2?
namely
(12)
Wherein
,
dt nbe called optimal temperature difference.
k↑，
dt n↑。
kwhen → 1,
dt n→ 0;
kduring → ∞,
dt n→ 1.It is easy to show that,
dt n<
dt c.
i(reflection
dt csize),
n(reflection
dt nsize) as shown in Figure of description 5.
Due to
s ri=0, so work as
s ri-
s ti=-
s ytime, must have
s ti=-
s y.
Will
dt=
dt nsubstitution formula (10), (11) or order
dt 1=
dt 2?
(13)
p nbe called the best or most high bearing capacity, only with
s y,
krelevant, with
e,
a,
uirrelevant.
k↑，
p n↑。For footpath ratio
kcertain pressurized container, for meeting simultaneously
s ri-
s ti≤
s ywith
s to>=-
s ythe most high bearing capacity of condition is limited by formula (13), the temperature difference higher or lower than
dt n, all will cause bearing capacity lower than
p n.For carrying task
pcertain pressurized container, footpath ratio must not be less than the value by formula (13) defined.
kwhen=1,
p n=0;
kduring → ∞,
p n→ 1.
p n/
s y,
p e/
s y,
p y/
s y, 2
p e/
s yas shown in Figure of description 6, wherein
p yfor cylindrical pressure vessel is by integral yield pressure during external pressure,
p y/
s y=ln
k.
，
，
。
,
dt=
dt ntime,
s ti=
s to=-
s y,
.
Embodiment 4, and somewhere needs a footpath ratio
kthe external pressure vessel of=1.5,
s y=350MPa, what kind of technical characterstic does the pressurized container that construct have?
If do not make Self-enhancement treatment, its bearing capacity of such container is only
p e=97.222MPa.
According to the technical solution of the utility model, can apply at the inside and outside wall of pressurized container
dt=
dt n=26.92469 ° of C(are by formula (12)) the temperature difference, its bearing capacity is
p=
p n=115.3915MPa(is obtained by formula (13)).Construction of pressure vessel feature is
k=1.5,
dt=26.92469 ° of C,
p=115.3915Mpa.
Embodiment 5, and somewhere needs a footpath ratio
kthe pressurized container of=4,
s y=350MPa, what kind of technical characterstic should the pressurized container that construct have?
If do not make Self-enhancement treatment, its bearing capacity of such container is only
p e=164.0625MPa.
According to the technical solution of the utility model, can apply at the inside and outside wall of pressurized container
dt=
dt n=57.21597 ° of C(are by formula (12)) the temperature difference, its bearing capacity is
p=
p n=245.2113MPa(is obtained by formula (13)).Construction of pressure vessel feature is
k=4,
dt=57.21597 ° of C,
p=245.2113Mpa.
Formula (13) also can be used for determining the footpath ratio under best bearing capacity
k.
Embodiment 6, and somewhere needs a pressurized container bearing 250MPa, should have what kind of technical characteristics and just can meet the demands.
If adopt
s ythe material of=350MPa, if do not make Self-enhancement treatment, due under elastic state, when container wall thickness is infinitely great, also can only bear
p/
s y=1/3
0.5the pressure of=0.577, modern
p/
s y=250/350=0.714286>0.577, so do not make Self-enhancement treatment, even if container wall thickness infinity can not meet the demands.And according to technical solutions of the utility model, obtained by formula (13)
k=4.299602.So pressure vessel technology feature is
k=4.299602,
dt=58.33336 ° of C,
p=250Mpa.
If do not require, the highest or footpath of bearing capacity is than minimum, then for certain material (
e,
a,
u,
s ydetermine), the technological scheme of structure elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel can be flexible, namely utilizes formula (10), (11) in parameter
dt,
k,
pdeng between carry out adjusting according to actual demand, combine, weigh.Basic principle is:
1,
kfixing, determined by formula (12)
dt n.
(1) if get
dt=
dt n, then the bearing capacity determined with formula (10), (11) is identical,
p=
p n.Now,
s ri-
s ti=
s y(being ensured by formula (10)),
s to=-
s y(being ensured by formula (11)), 0<
s ro-
s to<
s y,
s ti=-
s y.
(2) if get
dt>
dt n, then bearing capacity is determined with formula (11), namely
p=
p 4<
p n.Now,
s to=-
s y(being ensured by formula (11)) ,-
s y<
s ti<
s y,-
s y<
s ri-
s ti,
s ro-
s to<
s y.
(3) if get
dt<
dt n, then bearing capacity is determined with formula (10), namely
p=
p 3<
p n.Now,
s ri-
s ti=
s y(being ensured by formula (10)) ,-
s y<
s ro-
s to<
s y,-
s y<
s to<
s y,
s ti=-
s y.
2,
dtfixing
(1)
dt=
dt n: determined by formula (12)
k(be denoted as
k n), determined by formula (13)
p n.
(2)
dt>
dt n: it is fixed to get
k(must have
k>
k n), determine bearing capacity with formula (13); Or get calmly
p(must have
p<
p n), determine footpath ratio with formula (13)
k(result must be
k<
k n).
(3)
dt<
dt n: it is fixed to get
k(must have
k<
k n), determine bearing capacity with formula (12); Or get calmly
p(must have
p>
p n), determine footpath ratio with formula (12)
k(result must be
k>
k n).
In a word, if
dt≠
dt n, it is fixed to get
k, determined by formula (10), (11)
p, get little
pbe worth as the actual bearing capacity by the container of structure; It is fixed to get
p, determined by formula (10), (11)
k, get large
kbe worth as the actual footpath ratio by the container of structure.
3,
pfixing
(1) if
p=
p n, determined by formula (13)
k, determined by formula (12)
dt.
(2) if
p≠
p n, it is fixed to get
dt, determined by formula (10), (11)
k, get large
kbe worth as the actual footpath ratio by the container of structure; It is fixed to get
k, determined by formula (10), (11)
dt, preferably get little
dtbe worth as the actual temperature difference by the container of structure.
If again consider change material behavior (
a,
s y,
u,
edeng), technological scheme will be more flexible.
Embodiment 7, and somewhere needs a footpath ratio
kthe pressurized container of=2.5, material as described in example,
s y=350MPa, what kind of technical characterstic should the pressurized container that construct have?
Known by formula (12),
dt n=47.03882 ° of C, are known by formula (13),
p n=201.595MPa.
(1) if get
dt=50 ° of C, are known by formula (11),
p 4=198.3307MPa(and
p 3=205.0318MPa>
p 4, not all right)
Therefore pressure vessel technology feature is
k=2.5,
dt=50 ° of C,
p=198.3307Mpa.
(2) if get
dt=45 ° of C, are known by formula (10),
p 3=199.2286MPa(and
p 4=203.8425MPa>
p 3, not all right)
Therefore pressure vessel technology feature is
k=2.5,
dt=45 ° of C,
p=199.2286Mpa.
Embodiment 8, and certain production process can provide
dtthe temperature difference of=50 ° of C, desirable to provide the construction of pressure vessel that can meet need of production, if adopt
s ythe material of=350MPa.
(1) if without pressure-bearing restriction, then have multiple technologies scheme:
1. get
k=3, then
dt n=51.68385>50 ° of C,
p n=221.5022MPa,
p=
p 3=219.3537MPa.Therefore pressure vessel technology feature is
k=3,
dt=50 ° of C,
p=219.3537Mpa.
2. get
k=2, then
dt n=39.74664<50 ° of C,
p n=170.3428MPa,
p=
p 4=160.1125MPa.Therefore pressure vessel technology feature is
k=3,
dt=50 ° of C,
p=160.1125Mpa.
Etc..
(2) 50 ° of C=are supposed
dt n, obtained by formula (12)
k n=2.794748, obtained by formula (13)
p=
p n=214.2858MPa.So pressure vessel technology feature is
k=2.794748,
dt=50 ° of C,
p=214.2858Mpa.
(3) if require pressure-bearing 200MPa, namely
p/
s y=200/350=0.571429.Obtained by formula (10)
k=2.371046, obtained by formula (11)
k=2.52772, get
k=2.52772.So pressure vessel technology feature is
k=2.52772,
dt=50 ° of C,
p=200Mpa.
(4) if require pressure-bearing 100MPa, namely
p/
s y=100/350=0.285714.Obtained by formula (10)
k=1.322445, obtained by formula (11)
k=1.507019, get
k=1.507019.So pressure vessel technology feature is
k=1.507019,
dt=50 ° of C,
p=100Mpa.
(5) if require pressure-bearing 230MPa, namely
p/
s y=230/350=0.657143.Obtained by formula (10)
k=3.596834, obtained by formula (11)
k=3.170459, get
k=3.596834.So pressure vessel technology feature is
k=3.596834,
dt=50 ° of C,
p=230Mpa.
dt=
dt n, namely
p=
p ntime, three-dimensional total stress is
(14)
，
，-
s y<
s r<0、
s ti=
s to=-
s y。
，
，-
s y<
s t<0。
，
Known by formula (10), as long as
dt>=0, just have
p>=
p e.Known by formula (11), reduce the temperature difference and can improve bearing capacity
p, order
p 2>=
p e?
，
(15)
dt n<
dt e, this illustrates that the temperature difference need not can obtain too greatly obvious self intensification effect.Will
z~
krelation curve adds Fig. 5 to, to compare
z,
n,
i.
Order
dt e=
dt cor order
z=
i:
(
k 2-1)(3
k 2-1)-
k 2(
k 2+1)ln
k 2=0 (16)
The solution of formula (16) is
k=3.406832=
k e.
k ebe called effective diameter ratio.
k<
k etime,
z<
i, namely
dt e<
dt c;
k>
k etime,
z>
i, namely
dt e>
dt c.
Claims (2)
1. an elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel, is characterized in that: the inside and outside wall of described pressurized container exists temperature difference, and internal face temperature is
t i, outer wall temperature is
t o, the temperature difference
dt=
t o-
t i,
t o>
t i, be called external heat; The temperature difference makes pressurized container wall produce temperature difference prestressing force, and total stress during described pressurized container work is that temperature difference prestressing force and mechanical stress are superimposed, described mechanical stress finger pressure container work pressure
pthe stress produced, described pressurized container working pressure
pfor external pressure; Described internal pressure vessel walls radius surface is
r i, outer wall radius is
r o; Described pressurized container, under the effect of temperature difference prestressing force, is in elastic state, namely
dt≤
dt c,
dt cfor temperature difference prestressing force has just made internal pressure vessel walls face produce the temperature difference of surrender, be called critical temperature difference,
; Wherein
efor container material Young's modulus,
afor container material thermal expansion coefficient,
ufor container material Poisson's ratio,
s yfor container material yield strength,
kfor the footpath ratio of container,
k=
r o/
r i; The physical dimension of this pressurized container, i.e. footpath ratio
k, bearing capacity
p/
s y, material property factor (
e,
a,
u,
s y), the temperature difference
dtbetween with
or
relation constraint, pressurized container wall thickness
b=
r o-
r i=
r i(
k-1);
k,
p,
e,
a,
u,
s y,
dtsize adjust according to actual needs, combine, mate; The temperature difference is defined as
, bearing capacity is defined as
,
dt nbe called optimal temperature difference,
p nbe called the best or most high bearing capacity.
2. elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel according to claim 1, is characterized in that: described temperature difference is caused by the operating temperature of pressurized container itself, or heats the inside and outside wall of pressurized container or cool and cause.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678570.1U CN204284429U (en) | 2014-11-14 | 2014-11-14 | A kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel |
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| CN201420678570.1U CN204284429U (en) | 2014-11-14 | 2014-11-14 | A kind of elasticity temperature difference prestressing force external heat external pressure self-reinforcing pressure vessel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508600A (en) * | 2016-01-07 | 2016-04-20 | 湖南师范大学 | Low-temperature prestress internal-pressure internal-heating pressure vessel |
| CN105508601A (en) * | 2016-01-08 | 2016-04-20 | 湖南师范大学 | Moderate-temperature prestress internal-pressure internal-heating pressure vessel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508600A (en) * | 2016-01-07 | 2016-04-20 | 湖南师范大学 | Low-temperature prestress internal-pressure internal-heating pressure vessel |
| CN105508601A (en) * | 2016-01-08 | 2016-04-20 | 湖南师范大学 | Moderate-temperature prestress internal-pressure internal-heating pressure vessel |
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