CN206378040U - A kind of hydrogen-cooled device sealing structure - Google Patents
A kind of hydrogen-cooled device sealing structure Download PDFInfo
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- CN206378040U CN206378040U CN201621372156.3U CN201621372156U CN206378040U CN 206378040 U CN206378040 U CN 206378040U CN 201621372156 U CN201621372156 U CN 201621372156U CN 206378040 U CN206378040 U CN 206378040U
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Abstract
The utility model provides a kind of hydrogen-cooled device sealing structure, including hydrogen-cooled device body (4), electric generator casing (6) and lower platen (7), hydrogen-cooled device body (4) opposite end respectively be above in the charge of plate (5), under be in the charge of plate (2) and be fixedly connected, it is in the charge of to be formed between plate (5) and electric generator casing (6) on described and is tightly connected, fixing seal structure is formed between the lower platen (7) and electric generator casing (6), and lower platen (7) is in the charge of formation between plate (2) with and is slidingly sealed structure.Hydrogen not only can be effectively prevented to be escaped in the horizontal direction to outside machine in slave using the utility model, the hydrogen interior effusion to outside machine of slave in vertical direction can also be effectively prevented simultaneously, and the displacement stress produced by when can be expanded with heat and contract with cold to hydrogen-cooled device because of temperature change is discharged in time, so as to ensure that the sealing reliability and safety in operation of whole hydrogen-cooled device.
Description
Technical field
The utility model is related to hydrogen-cooled device technical field of sealing technology, more particularly, to applied to a kind of hydrogen-cooled of steam turbine generator
Device sealing structure.
Background technology
With continuing to develop for power industry, Turbo-generator Set is just constantly towards large-sized unit, high parameter and vast capacity
Direction develop.The single-machine capacity of steam turbine generator is bigger, and loss is bigger, in order to take away heat dissipation capacity in machine, generator in time
Cooling medium generally from cooling effect is preferable, pressure is larger hydrogen.But, with the continuous improvement of hydrogen pressure, hydrogen
Sealing problem will be protruded more.
Hydrogen cooler (referred to as " hydrogen-cooled device ", similarly hereinafter) is changed as the main heat-exchanging part of steam turbine generator, inside it
Hot-water line is as expansion occurs in the change of the gentle cold and hot hydrogen temperature of Inlet and outlet water and shrinks, in order to which anti-antipriming pipe is in the effect of expanding with heat and contract with cold
Under deform and be damaged, it is desirable to hydrogen-cooled device can freely slide on the part being attached thereto.Because hydrogen is most light
Gas, its permeability and diffusivity are very strong, and hydrogen gas leakage is easily caused in the pressure vessel for fill hydrogen.With hydrogen
Being continuously increased for leakage rate, will have influence on exerting oneself for generator, or even set off an explosion, so that security incident is caused, therefore, operation
In generator have strict requirements for the leakage rate of hydrogen.And current hydrogen-cooled device structure design, in sealing structure side
Face is primarily present following defect：First, during actual installation, the sealing strip easily damaged in vertical direction, in-site installation
Technique is not good, and operability is also poor, causes actual sealing effectiveness and bad.Second, in actual use, when generator holds
When amount is increased, hydrogen pressure is improved, its sealing effectiveness does not reach use requirement then completely.
Utility model content
The technical problems to be solved in the utility model is：There is provided a kind of hydrogen-cooled device is close for the problem of existing for prior art
Seal structure, improves sealing reliability during hydrogen-cooled device operation, and can discharge displacement stress when hydrogen-cooled device expands with heat and contract with cold in time.
The technical problems to be solved in the utility model is realized using following technical scheme：A kind of hydrogen-cooled device sealing structure,
Including hydrogen-cooled device body, electric generator casing and lower platen, the hydrogen-cooled device body opposite end respectively be above in the charge of plate, under be in the charge of
Plate is fixedly connected, it is described on be in the charge of to be formed between plate and electric generator casing and be tightly connected, the lower platen and electric generator casing it
Between form fixing seal structure, and lower platen and under be in the charge of to be formed between plate and be slidingly sealed structure.
Preferably, the lower platen free end opens up otch, and first seal, the first seal are installed in otch
It is pressed abd fixed on by sealing clamp, hold-down bolt on lower platen, the hold-down bolt is connected with lower platen, and makes sealing
Pressing plate compresses first seal, and first seal and under be in the charge of to be formed between plate and be slidingly sealed structure.
Preferably, the first seal be arranged on by sealing clamp, under be in the charge of plate, the cavity that lower platen is collectively forming
It is interior.
Preferably, in addition to press strip, the hold-down bolt is connected after running through press strip with lower platen, and compresses press strip
Sealing clamp, the sealing clamp compresses first seal, and first seal and under be in the charge of between plate to be formed and be slidingly sealed knot
Structure.
Preferably, hollow cavity structure is formed between described sealing clamp, lower platen, press strip.
Preferably, the L-shaped structure of the cross sectional shape of the press strip.
Preferably, opened up on the lower platen and screwed hole is opened up on through hole, the electric generator casing, the fastening bolt is passed through
Wear after the through hole on pressing plate and screw thread is formed between the screwed hole on electric generator casing be flexibly connected, and it is described tightly
Gap is formed between the through hole on fixing bolt and lower platen to coordinate.
Preferably, described first seal is square rubber bar.
Preferably, seal is opened up in the vertical direction of the lower platen otch is installed, the seal is installed in otch
Second seal is set, the second seal and under be in the charge of to be formed between plate and be slidingly sealed structure.
Preferably, seal is opened up in the horizontal direction of the lower platen otch is installed, the seal is installed in otch
3rd seal is set, fixing seal structure is formed between the 3rd seal and electric generator casing.
Compared with prior art, the beneficial effects of the utility model are：Due to being above in the charge of shape between plate and electric generator casing
Into being tightly connected, form fixing seal structure between lower platen and electric generator casing, lower platen and under be in the charge of between plate to be formed and slide
Movable sealing structure, therefore, both can guarantee that the sealing of hydrogen-cooled device and electric generator casing sealing surface in the horizontal direction, in vertical direction could
By property, it is ensured that safe and reliable when it runs；Simultaneously, moreover it is possible to play certain benefit in hydrogen-cooled device breathing because of temperature change
The effect of repaying, and to hydrogen-cooled device because expanding with heat and contract with cold produced by displacement stress discharged in time, drastically increase hydrogen-cooled device
Safe and reliable property is run, the utility model not only has good sealing reliability, and has when can guarantee that in-site installation good
Good manufacturability and operability, the hydrogen-cooled sealing demand of be particularly suitable for use in Large Copacity and high hydrogen pressure steam turbine generator.
Brief description of the drawings
Fig. 1 is a kind of unitary construction figure of hydrogen-cooled device sealing structure of the utility model.
Fig. 2 is the partial enlarged drawing at A in Fig. 1.
Marked in figure：It is in the charge of under 1- water tanks, 2- on plate, 3- cooling water pipes, the hydrogen-cooled device bodies of 4-, 5- and is in the charge of plate, 6- generates electricity
Machine casing, 7- lower platens, 8- sealing clamps, 9- first seals, 10- second seals, the seals of 11- the 3rd, 12- fastening spiral shells
Bolt, 13- press strips, 14- hold-down bolts.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with the accompanying drawings and specifically
The utility model is described in detail embodiment.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
Hydrogen-cooled device sealing structure as shown in Figure 1 and Figure 2, mainly including hydrogen-cooled device body 4, electric generator casing 6 and lower platen
7, the upper and lower opposite end of the hydrogen-cooled device body 4 respectively be above in the charge of plate 5, under be in the charge of plate 2 and be fixedly connected, it is described on hold
Formed between tube sheet 5 and electric generator casing 6 it is fixed is tightly connected, it is described under be in the charge of the bottom of plate 2 and be fixedly connected with water tank 1,
On be in the charge of between plate 5 is in the charge of plate 2 with and be fixedly connected with cooling water pipe 3, the cooling water pipe 3 is communicated with water tank 1.In lower platen 7
Seal is opened up in horizontal direction otch is installed, the seal, which is installed, sets the 3rd seal 11 in otch, the described 3rd is close
Sealing 11 is by forming fixing seal structure between fastening bolt 12 and electric generator casing 6.Specifically, can be on lower platen 7
Open up through hole, open up screwed hole on electric generator casing 6, through hole of the fastening bolt 12 on lower platen 7 and with generating
Form screw thread between screwed hole on machine casing 6 to be flexibly connected, so as to so that between the 3rd seal 11 and electric generator casing 6
Form fixing seal structure.Preferably, the 3rd described seal 11 can use O shapes or L-shaped sealing strip.
As shown in Fig. 2 seal is opened up in the vertical direction of lower platen 7 installs otch, the seal installs otch
Middle setting second seal 10；Otch is opened up in the free end of lower platen 7, first seal 9 is installed in otch；Described first
Seal 9, second seal 10 are engaged with press strip 13, sealing clamp 8 by hold-down bolt 14 and are in the charge of with between plate 2
Formation is slidingly sealed structure.Specifically, screwed hole can be opened up on lower platen 7, through hole, the compression is opened up on press strip 13
Through hole of the bolt 14 on the press strip 13 and screw thread formed between the screwed hole on lower platen 7 be flexibly connected, so as to so that
Press strip 13 compresses sealing clamp 8, and the sealing clamp 8 compresses first seal 9 so that first seal 9, second seal 10
Formation is slidingly sealed structure between being in the charge of plate 2 with respectively, that is, when hydrogen-cooled device is produced in vertical direction because expanding with heat and contract with cold
During telescopic displacement, slided relatively as shown in figure 1, being in the charge of between plate 2 and first seal 9, second seal 10 and will produce under described
It is dynamic, and under be in the charge of plate 2 and keep sealing state between first seal 9, second seal 10 respectively.Preferably, described
One seal 9 can use cross sectional shape for square rubber strip, and the second seal 10 can use O shape sealing strips.
In order that above-mentioned hydrogen-cooled device sealing structure is while with excellent sealing reliability, moreover it is possible to ensure its scene peace
With good manufacturability and operability during dress, effectively it can especially be prevented during actual installation in vertical direction
Seal sustains damage, and can use following installation method, it specifically includes following steps：
First, open up seal respectively in the horizontal direction of lower platen 7, in vertical direction and otch is installed, in level side
Upward seal, which is installed, installs the 3rd seal 11 in otch, second is installed in seal installation otch in vertical direction
Seal 10.
Secondly, adjustment lower platen 7 is in the charge of relative gap between plate 2, electric generator casing 6 with respectively, using fastening spiral shell
Bolt 12 is connected through lower platen 7 and with thread connecting mode between electric generator casing 6, and makes lower platen 7 and generator
Between casing 6 by the 3rd seal 11 formation fixing seal structure, meanwhile, lower platen 7 and under be in the charge of between plate 2 by second
The formation of seal 10 is slidingly sealed structure.
Further to improve the sealing reliability of hydrogen-cooled device sealing structure, otch can also be opened up in the free end of lower platen 7,
And first seal 9 is installed in otch, the first seal 9 is compressed by sealing clamp 8, press strip 13 and hold-down bolt 14
It is fixed on lower platen 7, the hold-down bolt 14 is connected after running through press strip 13 with lower platen 7, and it is close to compress press strip 13
Seal pressing plate 8, the sealing clamp 8 compresses first seal 9, and first seal 9 and under be in the charge of between plate 2 to be formed and be slidingly sealed
Structure.
Preferably, the L-shaped structure of cross sectional shape of the press strip 13, and shape between sealing clamp 8, lower platen 7, press strip 13
Into hollow cavity structure, as shown in Fig. 2 using such structure design, can make press strip 13 that there is certain elasticity of compression, with
Ensure that press strip 13 can compress sealing clamp 8.
Preferably, can make first seal 9 be arranged on by sealing clamp 8, under be in the charge of plate 2, lower platen 7 and be collectively forming
Cavity in, the hardness of the sealing clamp 8 is more than the hardness of first seal 9, after such structure design, can make
The compressive deformation of first seal 9 be limited at completely by sealing clamp 8, under be in the charge of plate 2, the sky that lower platen 7 is collectively forming
Intracavitary, and make first seal 9 that there is bigger deformation quantity than sealing clamp 8 under equal pressure, so that it is guaranteed that the first sealing
Part 9 and under be in the charge of sealing reliability between plate 2, when first seal 9 uses cross sectional shape for square rubber bar, particularly fit
With.
In the installation process of hydrogen-cooled device sealing structure, after hydrogen-cooled device sealing structure is installed in place, therein first is close
Sealing 9, second seal 10, the compressed shape variable of the 3rd seal 11 preferably control natural on respective compression direction respectively
The 15%-25% of size, to prevent first seal 9, second seal 10, the 3rd seal 11 from excessively being dropped because of compressive deformation
The overall sealing performance of low hydrogen cooler sealing structure.Adjustment lower platen 7 is in the charge of plate 2, electric generator casing 6 with respectively for convenience
Between relative gap, can open up through hole on lower platen 7, the through hole of the fastening bolt 12 on lower platen 7,
And gap cooperation is formed between the through hole.
After the utility model, because hydrogen-cooled device forms fixing seal structure in the horizontal direction, so as to prevent
The hydrogen interior effusion to outside machine of slave in the horizontal direction, simultaneously as it is formed in vertical direction is slidingly sealed structure, so that
The hydrogen interior effusion to outside machine of slave, and in hydrogen-cooled device breathing because of temperature change, rising in vertical direction can be prevented
To certain compensating action, so that the displacement stress produced when being expanded with heat and contract with cold to hydrogen-cooled device is discharged in time, and ensure whole
The sealing effectiveness of hydrogen-cooled device, be particularly suitable for use in Large Copacity and the steam turbine generator of higher hydrogen pressure.
Preferred embodiment of the present utility model is the foregoing is only, not to limit the utility model, should be referred to
Go out, all any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc. all should be included
Within protection domain of the present utility model.
Claims (10)
1. a kind of hydrogen-cooled device sealing structure, including hydrogen-cooled device body (4) and electric generator casing (6), hydrogen-cooled device body (4) phase
To two ends respectively be above in the charge of plate (5), under be in the charge of plate (2) and be fixedly connected, it is described on be in the charge of plate (5) and electric generator casing (6) it
Between formed and be tightly connected, it is characterised in that：Also include lower platen (7), shape between the lower platen (7) and electric generator casing (6)
Into fixing seal structure, and lower platen (7) and under be in the charge of between plate (2) to be formed and be slidingly sealed structure.
2. a kind of hydrogen-cooled device sealing structure according to claim 1, it is characterised in that：Open lower platen (7) free end
If otch, first seal (9) is installed in otch, the first seal (9) passes through sealing clamp (8), hold-down bolt
(14) it is pressed abd fixed on lower platen (7), the hold-down bolt (14) is connected with lower platen (7), and makes sealing clamp (8)
First seal (9) is compressed, and first seal (9) is in the charge of formation between plate (2) with and is slidingly sealed structure.
3. a kind of hydrogen-cooled device sealing structure according to claim 2, it is characterised in that：The first seal (9) is installed
By sealing clamp (8), under be in the charge of plate (2), in the cavity that lower platen (7) is collectively forming.
4. a kind of hydrogen-cooled device sealing structure according to claim 2, it is characterised in that：Also include press strip (13), the pressure
Tight bolt (14) is connected with lower platen (7) afterwards through press strip (13), and press strip (13) is compressed sealing clamp (8), described
Sealing clamp (8) compresses first seal (9), and first seal (9) is in the charge of formation between plate (2) with and is slidingly sealed knot
Structure.
5. a kind of hydrogen-cooled device sealing structure according to claim 4, it is characterised in that：Described sealing clamp (8), push
Hollow cavity structure is formed between plate (7), press strip (13).
6. a kind of hydrogen-cooled device sealing structure according to claim 5, it is characterised in that：The cross sectional shape of the press strip (13)
L-shaped structure.
7. a kind of hydrogen-cooled device sealing structure according to claim any one of 2-6, it is characterised in that：The lower platen (7)
On open up screwed hole opened up on through hole, the electric generator casing (6), institute of the fastening bolt (12) on lower platen (7)
State after through hole and screw thread is formed between the screwed hole on electric generator casing (6) be flexibly connected, and the fastening bolt (12)
Gap is formed between the through hole on lower platen (7) to coordinate.
8. a kind of hydrogen-cooled device sealing structure according to claim any one of 2-6, it is characterised in that：The first described sealing
Part (9) is square rubber bar.
9. a kind of hydrogen-cooled device sealing structure according to claim any one of 1-6, it is characterised in that：The lower platen (7)
Vertical direction on open up seal otch be installed, the seal is installed and second seal (10) is set in otch, described the
Two seals (10) and under be in the charge of to be formed between plate (2) and be slidingly sealed structure.
10. a kind of hydrogen-cooled device sealing structure according to claim any one of 1-6, it is characterised in that：The lower platen (7)
Horizontal direction on open up seal otch be installed, the seal is installed and the 3rd seal (11) is set in otch, described the
Fixing seal structure is formed between three seals (11) and electric generator casing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372156.3U CN206378040U (en) | 2016-12-14 | 2016-12-14 | A kind of hydrogen-cooled device sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621372156.3U CN206378040U (en) | 2016-12-14 | 2016-12-14 | A kind of hydrogen-cooled device sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206378040U true CN206378040U (en) | 2017-08-04 |
Family
ID=59406327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621372156.3U Active CN206378040U (en) | 2016-12-14 | 2016-12-14 | A kind of hydrogen-cooled device sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206378040U (en) |
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2016
- 2016-12-14 CN CN201621372156.3U patent/CN206378040U/en active Active
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