CN204628552U - A kind of high temperature pressure vessel sealing configuration - Google Patents
A kind of high temperature pressure vessel sealing configuration Download PDFInfo
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- CN204628552U CN204628552U CN201520190914.9U CN201520190914U CN204628552U CN 204628552 U CN204628552 U CN 204628552U CN 201520190914 U CN201520190914 U CN 201520190914U CN 204628552 U CN204628552 U CN 204628552U
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- seal groove
- high temperature
- pressure vessel
- temperature pressure
- stamping steel
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Abstract
The utility model relates to the technical field of sealing technology of high temperature pressure vessel, especially a kind of high temperature pressure vessel sealing configuration is related to, comprise high temperature pressure vessel and be arranged at high temperature pressure vessel junction for being connected two flanges of high temperature pressure vessel, junction along described two flanges is provided with seal groove, and described seal groove is made up of two identical, that position is relative grooves of size on the junction plane being opened in every side flange respectively, be provided with Stamping Steel Ribbon in described seal groove, and the linear expansion coefficient of described Stamping Steel Ribbon is greater than the linear expansion coefficient of seal groove.This high temperature pressure vessel sealing configuration, by the flange junction at high temperature pressure vessel, seal groove and Stamping Steel Ribbon are set, and utilize Stamping Steel Ribbon different with the linear expansion coeffcient of seal groove, realize good sealing effect, solve the problem that existing high temperature pressure vessel joint sealing effect is poor.
Description
Technical field
The utility model relates to the technical field of sealing technology of high temperature pressure vessel, particularly relates to a kind of high temperature pressure vessel sealing configuration.
Background technique
At present generally above add flange at pressurized container junction point, and add colloid or pad realizes sealing at flange.And for there being the high temperature pressure vessel of high temperature and high pressure gas in container during work, then inapplicablely add colloid or pad, be generally by improve flanged surface machining accuracy or strengthen bolt pretightening increase sealing area to realize sealing, but this solution is not obvious for baroque pressurized container effect, as steam turbine, the high temperature pressure vessel flange junction point of gas turbine, because temperature and pressure is uneven, the unequal flange that causes of bolt pretightening has the gas leak phenomenon that cracks, and increase sealing area by strengthening bolt pretightening, often there will be while compress another side and tilt again, be difficult to control pressurized gas completely leak outside.
Model utility content
(1) technical problem that will solve
The purpose of this utility model to provide that a kind of structure is simple, the high temperature pressure vessel of good sealing effect sealing destructing, to solve the poor problem of existing high temperature pressure vessel joint sealing effect.
(2) technological scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of high temperature pressure vessel sealing configuration, comprise high temperature pressure vessel and be arranged at high temperature pressure vessel junction for being connected two flanges of high temperature pressure vessel, junction along described two flanges is provided with seal groove, and described seal groove is made up of two identical, that position is relative grooves of size on the junction plane being opened in every side flange respectively, be provided with Stamping Steel Ribbon in described seal groove, and the linear expansion coefficient of described Stamping Steel Ribbon is greater than the linear expansion coefficient of described seal groove.
Preferably, described seal groove is opened in described two flange junctions near the position of pressurized gas.
Preferably, described Stamping Steel Ribbon is positioned at the neutral position of seal groove on seal groove width direction, is respectively equipped with initial assemblage gap a1 between the limit, left and right of described Stamping Steel Ribbon and described seal groove; In the height direction, described Stamping Steel Ribbon is fitted with sealing groove face away from the face of pressurized gas, and described Stamping Steel Ribbon is near being provided with initial assemblage gap a2 between the face of pressurized gas and described seal groove.
Preferably, the groove face of described sealing groove face is plane structure.
(3) beneficial effect
Technique scheme tool of the present utility model has the following advantages: high temperature pressure vessel sealing configuration of the present utility model, comprise high temperature pressure vessel and be arranged at high temperature pressure vessel junction for being connected two flanges of high temperature pressure vessel, junction along described two flanges is provided with seal groove, and described seal groove is made up of two identical, that position is relative grooves of size on the junction plane being opened in every side flange respectively, be provided with Stamping Steel Ribbon in described seal groove, and the linear expansion coefficient of described Stamping Steel Ribbon is greater than the linear expansion coefficient of described seal groove.This high temperature pressure vessel sealing configuration arranges seal groove and Stamping Steel Ribbon by the flange junction at elevated temperature vessel, and utilize Stamping Steel Ribbon different with the linear expansion coeffcient of seal groove, realize good sealing effect, solve the problem that existing high temperature pressure vessel joint sealing effect is poor.
Accompanying drawing explanation
Fig. 1 is the high temperature pressure vessel sealing configuration generalized section of the utility model embodiment;
Fig. 2 is Fig. 1 room temperature state lower seal groove cavity and gasket structure enlarged diagram;
Fig. 3 is Fig. 2 high-temperature expansion state lower seal groove cavity and gasket structure schematic diagram.
In figure: 1: high temperature pressure vessel; 11: flange; 12: seal groove; 13: Stamping Steel Ribbon; 2: pressurized gas.
Embodiment
For making the object of the utility model embodiment, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, belongs to the scope of the utility model protection.
As shown in Figure 1, the high temperature pressure vessel sealing configuration that the utility model embodiment provides, comprise high temperature pressure vessel 1 and be arranged at two flanges 11 of high temperature pressure vessel 1 junction for being connected, two flanges 11 pass through screw bolt reinforcing, junction along two flanges 11 is provided with seal groove 12, and sealing groove 12 is identical by two sizes on the junction plane being opened in every side flange 11 respectively, the groove composition that position is relative, when two flanges in conjunction with time, the position of described two grooves is relative, size is identical, form a complete seal groove 12, the Stamping Steel Ribbon 13 matched with seal groove 12 is provided with in seal groove 12, and the linear expansion coeffcient of Stamping Steel Ribbon 13 selected materials is greater than the linear expansion coeffcient of material selected by seal groove 12, when high-temperature expansion, Stamping Steel Ribbon 13 and seal groove 12 are sealed and matched and play better sealing effect.
In order to play further enhanced leaktightness effect, preferably, as shown in Figure 1, seal groove 12 offered the axle center near flange 11 but also have the position of certain distance with flange 11 inwall, when two flanges 11 engage, lay respectively at the corresponding seal groove 12 also formed for potting bar 13 of two grooves on two flange junction planes, larger power can be subject near the position of pressurized gas 2, Stamping Steel Ribbon 13 is conducive to better to compress gap, but because Stamping Steel Ribbon 13 can produce certain power to sealing cell wall when expanding, in order to make seal groove 12 more firm, the inwall of seal groove and flange 11 will have certain distance, it is made enough to bear the power of Stamping Steel Ribbon 13 deformation generation.
As shown in Figure 1-Figure 3, width direction Stamping Steel Ribbon 13 being arranged on seal groove 12 is positioned at the position in the middle of seal groove 12, makes between the limit, left and right of Stamping Steel Ribbon 13 and seal groove 12, there is initial assemblage gap a1 respectively; In seal groove 12 short transverse, Stamping Steel Ribbon 13 is fitted with sealing groove face away from the face of pressurized gas 2, makes only there is an initial assemblage gap a2 between Stamping Steel Ribbon 13 and seal groove 12 in the height direction, is conducive to pressurized gas 2 by Stamping Steel Ribbon 13 to external compression gap.
In order to make sealing effect better, and do not produce unnecessary stress, preferably, on seal groove 12 width direction, the initial assemblage gap a1 of Stamping Steel Ribbon about 13 is more than or equal to the difference of the swell increment of Stamping Steel Ribbon 13 width direction and the swell increment of seal groove 12 width direction;
In seal groove 12 short transverse, Stamping Steel Ribbon 13 and the initial assemblage gap a2 of seal groove 12 are less than or equal to the swell increment of Stamping Steel Ribbon 13 short transverse and seal groove 12 higher than the difference of swell increment spending direction.
Namely the initial assemblage gap a1 of the width direction of seal groove 12 can be determined by following formula:
△3＝△T×m1×c1
△4＝△T×m2×c2
a1≥△4-△3
I.e. a1 >=△ T × (m2 × c2-m1 × c1)
The short transverse initial assemblage gap a2 of seal groove 12 can be determined by following formula:
△1＝△T×h1×c1
△2＝△T×h2×c2
a2≤△2-△1
I.e. a2≤△ T × (h2 × c2-h1 × c1)
Wherein, △ 1 is seal groove 12 short transverse swell increment, and △ 2 is Stamping Steel Ribbon 13 short transverse swell increment, and △ 3 is seal groove 12 width direction swell increment, △ 4 is Stamping Steel Ribbon 13 width direction swell increment, △ T is the temperature raised, and h1 is seal groove 12 height, and h2 is Stamping Steel Ribbon 13 height, m1 is the width on the right side of seal groove 13, m2 is the width on the right side of Stamping Steel Ribbon 13, and c1 is seal groove 12 linear expansion coeffcient, and c2 is Stamping Steel Ribbon 13 linear expansion coeffcient.
In order to improve the intensity of seal groove 12, seal groove 12 and Stamping Steel Ribbon 13 being combined closely, and does not produce unnecessary stress, preferably, the groove face of seal groove 12 being set to plane structure.
Consider the various factors such as sealing effect and working life, the short transverse initial assemblage gap a2 of seal groove 12 can not be too small, in order to avoid generation failing stress, preferably, initial assemblage gap a2 is 0.9-1 times of Stamping Steel Ribbon 13 and seal groove 12 short transverse swell increment difference.
As shown in the figure 2, seal groove 12 and Stamping Steel Ribbon 13 symmetrical along the junction of two flanges 11, design analysis is carried out on the right side of getting seal groove 12 and Stamping Steel Ribbon 13.The material of flange 11 is 1Cr13, and its linear expansion coeffcient c1 is 1 × 10
-6/ DEG C, the material adopting Stamping Steel Ribbon 13 is 00Cr19Ni10, and its linear expansion coeffcient c2 is 1.8 × 10
-6/ DEG C.Now every side flange 11 opens half groove, the left and right width m1 of every side channel is 0.015m, upper-lower height h1 is 0.01m, design flow to be asked is of a size of on the right side of Stamping Steel Ribbon 13, according to the size of seal groove 12 and the linear expansion coeffcient of linear expansion coeffcient and Stamping Steel Ribbon 13, calculate the right side width m2 of the Stamping Steel Ribbon 13 and height h1 of right side initial assemblage gap a1 and Stamping Steel Ribbon 13 and initial assemblage gap a2.
When this high temperature pressure vessel sealing configuration operationally, it is 500 DEG C that assumed temperature is elevated to 520 DEG C of temperature rise amounts by room temperature 20 DEG C, in order to play sealing effect, Stamping Steel Ribbon 13 is greater than with the swell increment difference of the short transverse of seal groove 12 and equals initial assemblage gap a2, when getting initial assemblage gap a2 maximum value, namely, when Stamping Steel Ribbon 13 will equal initial assemblage gap a2 with the swell increment difference of the short transverse of seal groove 12, equation can be listed:
(△T×h2×c2)-(△T×h1×c1)＝h1-h2
Solve and obtain: h2=0.009996m
Obtain initial assemblage gap to be to the maximum: a2=h1-h2=0.000004m
In order to axially not produce unnecessary stress at flange 11, Stamping Steel Ribbon 13 is less than with the swell increment difference of seal groove 12 width direction and equals initial assemblage gap a1, when to get initial assemblage gap a1 be minimum value, namely to equal initial assemblage gap a1 at Stamping Steel Ribbon 13 and the swell increment difference of the short transverse of seal groove 12, can equation be listed:
(△T×m2×c2)-(△T×m1×c1)＝m1-m2
Solve and obtain: m2=0.014994m
Primary clearance is minimum is: a1=m1-m2=0.000006m
Obtain thus, the height h2 minimum value of Stamping Steel Ribbon 13 is 0.009996m, and namely the maximum initial assemblage gap a2 of short transverse is 0.000004m; On the right side of Stamping Steel Ribbon 13, the width m2 of (on the right side of Stamping Steel Ribbon center line) is 0.014994m to the maximum, and namely the minimum initial assemblage gap a1 of width direction is 0.000006m.As shown in Figure 3, now, Stamping Steel Ribbon 13 is close to sealing groove face in the height direction, reach good sealing effect, and Stamping Steel Ribbon 13 does not contact with sealing groove face on width direction, unnecessary stress can not be produced, achieve good sealing effect, solve the problem that existing high temperature pressure vessel joint sealing effect is poor.
In sum, high temperature pressure vessel sealing configuration of the present utility model and design method thereof, by the flange junction at elevated temperature vessel, seal groove and Stamping Steel Ribbon are set, and utilize Stamping Steel Ribbon different with the linear expansion coeffcient of seal groove, realize good sealing effect, solve the problem that existing high temperature pressure vessel joint sealing effect is poor.
It should be noted that, the utility model is also applicable to the sealing of other similar high temperature pressure vessel, and is not limited to flanged connecting structure.
Also it should be noted that, in the utility model, the right side of Stamping Steel Ribbon refers to the right side of Stamping Steel Ribbon center line, and symmetrical along center line on the left of itself and Stamping Steel Ribbon, the swell increment on the left of Stamping Steel Ribbon is identical with right side, clear, succinct for describing in the present embodiment, width direction is only selected the right side of Stamping Steel Ribbon be described.
Also it should be noted that, high temperature pressure vessel sealing configuration of the present utility model utilizes to arrange seal groove and Stamping Steel Ribbon along flange junction, and the linear expansion coeffcient utilizing seal groove different with Stamping Steel Ribbon is to realize better sealing, it is not only applicable to annular flange, also rectangular flange is applicable to, or the high temperature pressure vessel such as steam turbine, the gas turbine cylinder sealing that annular flange and rectangular flange combine.
What need further illustrate is, utilize principle of the present utility model, still good sealing can be realized to low-temperature pressure container, only need when choosing sealing strip material, linear expansion coeffcient is selected to be less than the material of seal groove linear expansion coeffcient, when by cold events, the contour projector of seal groove is larger than the contour projector of Stamping Steel Ribbon, still can realize sealing effect.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment's technological scheme of the utility model.
Claims (4)
1. a high temperature pressure vessel sealing configuration, comprise high temperature pressure vessel, it is characterized in that: described high temperature pressure vessel junction is provided with two flanges for connecting high temperature pressure vessel, junction along described two flanges is provided with seal groove, and described seal groove is made up of identical, that position the is relative groove of two sizes be opened in respectively on every side flange junction plane, be provided with Stamping Steel Ribbon in described seal groove, and the linear expansion coefficient of described Stamping Steel Ribbon is greater than the linear expansion coefficient of described seal groove.
2. high temperature pressure vessel sealing configuration according to claim 1, is characterized in that: described seal groove is opened in described two flange junctions near the position of pressurized gas.
3. high temperature pressure vessel sealing configuration according to claim 1, it is characterized in that: described Stamping Steel Ribbon is positioned at the neutral position of described seal groove on the width direction of seal groove, between the limit, left and right of described Stamping Steel Ribbon and described seal groove, be respectively equipped with initial assemblage gap a1; In the short transverse of seal groove, described Stamping Steel Ribbon is fitted away from the face of pressurized gas and the groove face of described seal groove, and described Stamping Steel Ribbon is near being provided with initial assemblage gap a2 between the face of pressurized gas and described seal groove.
4. high temperature pressure vessel sealing configuration according to claim 1, is characterized in that: the groove face of described seal groove is plane structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520190914.9U CN204628552U (en) | 2015-03-31 | 2015-03-31 | A kind of high temperature pressure vessel sealing configuration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791487A (en) * | 2015-03-31 | 2015-07-22 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Method for improving airtightness of high-temperature pressure container |
| CN113094815A (en) * | 2021-04-09 | 2021-07-09 | 爱驰汽车有限公司 | Sealing strip material parameter acquisition method and opening and closing part structure durability analysis method |
| CN113803168A (en) * | 2021-10-26 | 2021-12-17 | 江剑 | Gas turbine cylinder sealing flange |
-
2015
- 2015-03-31 CN CN201520190914.9U patent/CN204628552U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791487A (en) * | 2015-03-31 | 2015-07-22 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Method for improving airtightness of high-temperature pressure container |
| CN113094815A (en) * | 2021-04-09 | 2021-07-09 | 爱驰汽车有限公司 | Sealing strip material parameter acquisition method and opening and closing part structure durability analysis method |
| CN113803168A (en) * | 2021-10-26 | 2021-12-17 | 江剑 | Gas turbine cylinder sealing flange |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: High temperature pressure vessel seal structure Effective date of registration: 20161104 Granted publication date: 20150909 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20150909 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |