CN106949453A - Temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure - Google Patents
Temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure Download PDFInfo
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- CN106949453A CN106949453A CN201710312675.3A CN201710312675A CN106949453A CN 106949453 A CN106949453 A CN 106949453A CN 201710312675 A CN201710312675 A CN 201710312675A CN 106949453 A CN106949453 A CN 106949453A
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- 238000009413 insulation Methods 0.000 claims abstract description 154
- 239000007789 gas Substances 0.000 claims abstract description 35
- 238000002955 isolation Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000001307 helium Substances 0.000 claims abstract description 11
- 229910052734 helium Inorganic materials 0.000 claims abstract description 11
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000008646 thermal stress Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000003578 releasing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/002—Component parts or details of steam boilers specially adapted for nuclear steam generators, e.g. maintenance, repairing or inspecting equipment not otherwise provided for
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure, wherein, steam (vapor) outlet connecting tube one end is connected with steam (vapor) outlet tube sheet, the other end is connected with spiral heat exchange tube, the steam (vapor) outlet connecting tube has multiple, and connection tube bank is bundled into by pipe clamp, thermal insulation involucrum is coated with outside the tube bank, the thermal insulation involucrum includes interior thermal insulation board and end baffle plate, isolation pad is provided with helium layer between interior thermal insulation board and end baffle plate, can be according to the length of thermal insulation involucrum from completely spacing between interior thermal insulation board and end baffle plate, one or more limit methods during radially circumferential spacing and radial direction is spacing, so as to discharge the thermal stress produced by external high temperature, the thermal insulation board can also be surrounded for the sheet material of c-type or I types by section and formed, the spatial depiction unrestricted choice of position can be restrained according to connection, so as to complete the installation of thermal insulation involucrum flexible and efficiently.
Description
Technical field
The present invention relates to nuclear power generating equipment field, a kind of temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube is especially designed
Structure.
Background technology
HTGR is the new nuclear reactor with advanced technology feature generally acknowledged in the world, HTGR nuclear power
Stand with inherent safety, generating efficiency it is high, it is widely used the features such as, widely paid attention in the world, be also to have the
The nucleus reactor heap-type of four generation nuclear power system principal characters.Wherein, temperature gas cooled reactor steam generator is as high temperature gas-cooled
The important component of heap, its significance level needn't elaborate any further, naturally, what is faced in its Design and manufacturing process is difficult and necessary
The problem of solving be also and its numerous and diverse；Specifically, temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure is just
It is one of them and its crucial research project, current China is to temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure
There is more in-depth study, and obtained more great achievement in research, also the achievement has been done in the prior art
Certain record；
Such as Chinese patent, Application No. 201020655609.X, it is entitled " temperature gas cooled reactor steam generator connecting pipe
Attachment structure ", Application No. 201610390319.9, entitled " temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube list
Root poling attachment structure ", Application No. 201610392844.4, entitled " temperature gas cooled reactor steam generator feedwater connecting tube
Temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure is disclosed in the patent documents such as single poling attachment structure ", by
Information described in above-mentioned document is understood, attachment structure has been overcome at present and has been only used for overall poling, it is impossible to has been realized single
The technical problem of poling, and propose the concrete scheme of single poling；
But going deep into research, such scheme, which to be still needed, constantly improve and supplement；Because the steam (vapor) outlet connects
The residing working environment of adapter is extremely severe, and its ambient temperature can reach more than 750 degrees Celsius, and temperature is then much low in managing
In ambient temperature, in the presence of ambient temperature, temperature is readily formed between multiple bundles of steam (vapor) outlet connecting tubes of binding
Difference, and then cause the unequal a series of problem of heat exchange, directly influence temperature gas cooled reactor steam generator operating efficiency and
Service life；
And because temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube has multiple, the space very little with respect between, often
The structure type of individual steam (vapor) outlet connecting tube is all very complicated, and the Heat-insulation devices such as insulation involucrum are set outside steam (vapor) outlet connecting tube
It is highly difficult in actual mechanical process, do not have ripe technical scheme in the prior art；Also due to internal-external temperature difference is excessive, it is general
Logical involucrum is also difficult to the effect for reaching thermal insulation, also, in order to ensure involucrum does not affect the normal of steam (vapor) outlet connecting tube
Work requirements, can not there is larger active force between involucrum and connecting tube, even this is not contacted directly, even if designing a kind of energy
The involucrum of above-mentioned requirements is enough met, involucrum will necessarily produce thermal stress, and then influence the strong of involucrum in the presence of internal-external temperature difference
Degree and service life, even result in involucrum deformation, involucrum is in contact because of deformation with connecting tube again, so that involucrum is with being connected tube bank
Between act power, disturb the normal work of steam (vapor) outlet connecting tube；
So the technical problem faced now is how arrangement disclosure satisfy that heat-insulated, assembling, welding in limited space
Package structure, and the structure is kept expected working condition in such complicated working environment and is reached
To corresponding effect；
For these reasons, the present inventor does to existing temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure
Analyse in depth, with reference to above-mentioned technical problem and special working environment, go out to can solve the problem that above-mentioned technical problem to be designed,
Meet the new technical scheme of use requirement.
The content of the invention
In order to overcome above mentioned problem, present inventor has performed studying with keen determination, a kind of HTGR steam generation is designed
Device steam (vapor) outlet connecting pipe structure, wherein, steam (vapor) outlet connecting tube one end is connected with steam (vapor) outlet tube sheet, and the other end is changed with spiral
Heat pipe is connected, and the steam (vapor) outlet connecting tube has multiple, and is bundled into connection tube bank by pipe clamp, is coated outside the tube bank
There is thermal insulation involucrum, the thermal insulation involucrum includes interior thermal insulation board and end baffle plate, the helium between interior thermal insulation board and end baffle plate
Isolation pad is provided with layer, can be according to the length of thermal insulation involucrum from complete spacing footpath between interior thermal insulation board and end baffle plate
To one or more limit methods of the circumferential spacing and radial direction in spacing, so that the thermal stress produced by external high temperature is discharged,
The thermal insulation board can also be surrounded for the sheet material of c-type or I types by section and formed, and the space shape of position can be restrained according to connection
Condition unrestricted choice, so that the installation of thermal insulation involucrum is completed flexible and efficiently, so as to complete the present invention.
In particular it is object of the present invention to provide a kind of temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube knot
Structure, includes steam (vapor) outlet tube sheet 1, spiral heat exchange tube 3 and the steam (vapor) outlet connecting tube 2 of steam generator, wherein, the steam goes out
Mouth one end of connecting tube 2 is connected with steam (vapor) outlet tube sheet 1, and the other end is connected with spiral heat exchange tube 3；
The steam (vapor) outlet connecting tube 2 has multiple, and is bundled into connection tube bank 5 by pipe clamp 4；
Thermal insulation involucrum 6 is coated with outside the tube bank 5,
The thermal insulation involucrum 6 is arranged on pipe clamp 4,
Predetermined gap is left between the thermal insulation involucrum 6 and connection tube bank 5.
Wherein, the rectangular in cross-section of thermal insulation involucrum 6.
Wherein, the thermal insulation involucrum 6 includes interior thermal insulation board 61 and end baffle plate 62,
Wherein, helium layer 63 is left between interior thermal insulation board 61 and end baffle plate 62.
Wherein, between the interior thermal insulation board 61 and end baffle plate 62, i.e., it is provided with isolating pad in the helium layer 63
Piece 64.
Wherein, the spacing form between the interior thermal insulation board 61 and end baffle plate 62 is circumferentially spacing including complete spacing radial direction
With one or more of the radial direction in spacing.
Wherein, when the axial limiting form between interior thermal insulation board 61 and end baffle plate 62 is completely spacing,
The thermal insulation involucrum 6 also includes fixing screws 65,
Manhole is all offered on interior thermal insulation board 61 and end baffle plate 62,
The fixing screws 65 sequentially pass through the circle of the manhole of end baffle plate 62, isolation pad 64 and interior thermal insulation board 61
Shape through hole, and end baffle plate 62, isolation pad 64 and interior thermal insulation board 61 are fixed on pipe clamp 4.
Wherein, when the spacing form between interior thermal insulation board 61 and end baffle plate 62 is radially circumferential spacing,
The thermal insulation involucrum 6 also includes fixing screws 65,
Waist through hole is all offered on interior thermal insulation board 61 and end baffle plate 62, the length direction of the waist through hole is with being somebody's turn to do
The axis direction of thermal insulation involucrum 6 is consistent where waist through hole；
The fixing screws 65 sequentially pass through the waist of the waist through hole of end baffle plate 62, isolation pad 64 and interior thermal insulation board 61
Shape through hole, and end baffle plate 62, isolation pad 64 and interior thermal insulation board 61 are fixed on pipe clamp 4.
Wherein, when the spacing form between interior thermal insulation board 61 and end baffle plate 62 is radially spacing,
Manhole/waist through hole is not opened up on interior thermal insulation board 61 and end baffle plate 62, interior thermal insulation board 61 and outer heat-insulated
Plate 62 clamps isolation pad 64 together, and interior thermal insulation board 61 and end baffle plate 62 can relatively be slided along the axis direction of thermal insulation involucrum 6.
Wherein, the thermal insulation board is docked and/or overlapped with the sheet material that section is I types by the sheet material that section is c-type and formed；Or
Person
The thermal insulation board is docked by two sections for the sheet material of c-type and/or overlap joint is formed；Or
The thermal insulation board is docked by four sections for the sheet material of I types and/or overlap joint is formed.
Wherein, the thermal insulation board is interior thermal insulation board 61 and/or end baffle plate 62.
The present invention have the advantage that including：
(1) the temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure provided according to the present invention, in connection tube bank
Outside is coated with thermal insulation involucrum, can reduce the temperature difference between steam (vapor) outlet connecting tube；
(2) according to the temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure of the invention provided, thermal insulation involucrum is
There is helium layer between double-decker, two layers of thermal insulation board, can be effectively heat-insulated；
(3) on the temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure provided according to the present invention, thermal insulation involucrum
The structure design of release thermal stress is provided with, selection setting can be carried out according to the length (size of thermal stress) of thermal insulation involucrum, with
The releasing effect being optimal.
Brief description of the drawings
Fig. 1 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
Overall structure diagram；
Fig. 2 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
The sectional view of structure；
Fig. 3 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
In structure, the material that section is the sheet material of c-type and section is I templates constitutes the structural representation of thermal insulation board；
Fig. 4 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
In structure, two sections constitute the structural representation of thermal insulation board for the sheet material of c-type；
Fig. 5 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
In structure, four sections constitute the structural representation of thermal insulation board for the sheet material of I types；
Fig. 6 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
In structure, Pipe bundle structure schematic diagram is connected；
Fig. 7 shows the temperature gas cooled reactor steam generator steam (vapor) outlet connecting tube according to a kind of preferred embodiment of the invention
In structure, thermal insulation containment structure schematic diagram.
Drawing reference numeral explanation：
1- steam (vapor) outlet tube sheets
2- steam (vapor) outlet connecting tubes
3- spiral heat exchange tubes
4- pipe clamps
5- connections are restrained
51- straight lengths
52- bend loss
6- thermal insulation involucrums
Thermal insulation board in 61-
62- end baffle plates
63- helium layers
64- isolation pads
65- fixing screws
The straight shells of 71-
The curved shells of 72- first
The curved shells of 73- second
Embodiment
Below by drawings and Examples, the present invention is described in more detail.Illustrated by these, the features of the present invention
It will be become more apparent from clearly with advantage.
Special word " exemplary " is meant " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.Although each of embodiment is shown in the drawings
In terms of kind, but unless otherwise indicated, it is not necessary to accompanying drawing drawn to scale.
The temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure provided according to the present invention, such as institute in Fig. 1 and Fig. 2
Show, include steam (vapor) outlet tube sheet 1, spiral heat exchange tube 3 and the steam (vapor) outlet connecting tube 2 of steam generator, wherein, the steam goes out
Mouth one end of connecting tube 2 is connected with steam (vapor) outlet tube sheet 1, and the other end is connected with spiral heat exchange tube 3；
The steam (vapor) outlet connecting tube 2 has multiple, and is bundled into connection tube bank 5 by pipe clamp 4；In each HTGR
Multiple connection tube banks are both provided with steam generator, and are all disposed within certain regional extent；
Thermal insulation involucrum 6 is coated with outside the tube bank 5,
The thermal insulation involucrum 6 be arranged on pipe clamp 4 on, the pipe clamp 4 be looped around connection tube bank outside, annularly, it is described every
Also circlewise, thermal insulation involucrum 6 coats, is set in the outside of pipe clamp 4, it is preferable that the inwall of thermal insulation involucrum 6 in the section of thermometer bulb shell 6
It is close to the outer wall of pipe clamp 4；There can be multiple pipe clamps 4 in one section of connection tube bank, thermal insulation involucrum 6 is located at the outer of each pipe clamp 4
Side, its relative position relation is basically identical；
Predetermined gap is left between the thermal insulation involucrum 6 and connection tube bank 5, the gap length is relevant with the size of pipe clamp,
Further, the thickness in the gap is relevant with the thickness of pipe clamp radial direction.
In one preferred embodiment, as shown in Figure 2, the cross sectional shape of the thermal insulation involucrum 6 is with being connected tube bank 5
Cross sectional shape it is consistent, it is preferable that the rectangular in cross-section of thermal insulation involucrum 6.The thermal insulation involucrum 6 is to pass through bending, weldering by sheet material
The space for the relative closure that mode is formed such as connect, it is coated on the outside of connection tube bank 5.
In one preferred embodiment, as shown in Figure 2, the thermal insulation involucrum 6 includes thermal insulation board, the thermal insulation board
With double-layer structure, i.e., described thermal insulation board includes interior thermal insulation board 61 and end baffle plate 62, and interior thermal insulation board 61 is arranged on inner side, with pipe
Folder is in contact, and end baffle plate 62 is arranged on interior thermal insulation board 61 and sets outside,
Wherein, leave helium layer 63 between interior thermal insulation board 61 and end baffle plate 62, the global shape of the helium layer with it is heat-insulated
The shape of plate is basically identical, due to limiting forced convertion, the overall heat-proof quality of thermal insulation involucrum can be greatly improved.
In one preferred embodiment, between the interior thermal insulation board 61 and end baffle plate 62, i.e., in the helium
Isolation pad 64 is provided with layer 63, the heat insulating mattress is preferably fixed on interior thermal insulation board 61, it is further preferred that thereon
The hole passed through for screw is offered, can be circular port or mounting hole.
In one preferred embodiment, because the internal-external temperature difference of thermal insulation involucrum 6 is very big, necessarily there is heat on thermal insulation involucrum 6
Stress, sets limited location form, or referred to as position limiting structure between the interior thermal insulation board 61 and end baffle plate 62, described spacing
Mode includes the circumferentially spacing one or more with radial direction in spacing of complete spacing radial direction；Wherein, completely it is spacing refer to it is interior heat-insulated
Fixed as one between plate 61 and end baffle plate 62, it is impossible to relatively move；Radially it is circumferential it is spacing refer to interior thermal insulation board 61 and it is outer every
It can be moved axially relatively between hot plate 62 in limited space, certain thermal stress can be discharged, can not be along footpath
To with circumferential movement；It is radially spacing to refer to freely relatively move between interior thermal insulation board 61 and end baffle plate 62, it can release
Heat release stress, simply can not be along moving radially.It is spacing with radial direction by setting above-mentioned radial direction circumferentially spacing so that thermal stress is obtained
To discharge, the service life of thermal insulation involucrum 6 is improved, the temperature distortion of thermal insulation involucrum 6 is prevented.
In one preferred embodiment, as shown in Figure 2, the spacing side between interior thermal insulation board 61 and end baffle plate 62
When formula is completely spacing,
The thermal insulation involucrum 6 also includes fixing screws 65,
Manhole is all offered on interior thermal insulation board 61 and end baffle plate 62,
The fixing screws 65 sequentially pass through the circle of the manhole of end baffle plate 62, isolation pad 64 and interior thermal insulation board 61
Shape through hole, and end baffle plate 62, isolation pad 64 and interior thermal insulation board 61 are fixed on pipe clamp 4.
In one preferred embodiment, as shown in Figure 2, the spacing side between interior thermal insulation board 61 and end baffle plate 62
When formula is radially circumferential spacing,
The thermal insulation involucrum 6 also includes fixing screws 65,
Waist through hole is all offered on interior thermal insulation board 61 and end baffle plate 62, the length direction of the waist through hole is with being somebody's turn to do
The axis direction of thermal insulation involucrum 6 is consistent where waist through hole；
The fixing screws 65 sequentially pass through the waist of the waist through hole of end baffle plate 62, isolation pad 64 and interior thermal insulation board 61
Shape through hole, and end baffle plate 62, isolation pad 64 and interior thermal insulation board 61 are fixed on pipe clamp 4.
Heretofore described screw 65 is the general designation of bolt arrangement, and it can be any of the components such as bolt, nut
Combination, the specific setting form of bolt can also be a variety of, such as studs and single head stud, as long as folder can be reached
It is close to the effect of adapter beam.
In one preferred embodiment, the limit method between interior thermal insulation board 61 and end baffle plate 62 is radially spacing
When,
Manhole/waist through hole is not opened up on interior thermal insulation board 61 and end baffle plate 62, interior thermal insulation board 61 and outer heat-insulated
Plate 62 clamps isolation pad 64 jointly, and interior thermal insulation board 61 and end baffle plate 62 can relatively be slided along the axis direction of thermal insulation involucrum 6.
The pipe clamp 4 has multiple, and multiple pipe clamps 4 support interior thermal insulation board 61 together.
In one preferred embodiment, according to thermal insulation board 61 and end baffle plate 62 in the length selection of connection tube bank it
Between spacing form, on same section of thermal insulation board, can select to set a variety of spacing forms；Preferably, when connection tube bank is longer
When, selection is completely spacing and/or radially circumferential spacing form, and when connection tube bank is shorter, selection is completely spacing and/or radially limits
Position form, so as to fully discharge thermal stress.
In one preferred embodiment, as shown in Figure 6,5 shapes of connection tube bank are complex, including multiple straight tubes
Section 51 and multiple bend loss 52, the thermal insulation involucrum 6 are wrapped in the outside of connection tube bank 5, natural in straight length 51 and bend loss
Thermal insulation involucrum 6 is all coated with outside 52；The pipe clamp 4 is positioned only on straight length 51, does not have pipe clamp 4 on bend loss 52；
In one preferred embodiment, as shown in Figure 7, the thermal insulation involucrum 6 being coated on outside straight length 51
In straight tube-like, referred to as straight shell 71, the manhole, waist through hole are all opened on the thermal insulation involucrum 6 in straight tube-like
On region, i.e., straight shell；Thermal insulation involucrum 6 outside bend loss 52 is also in syphon shape, and the syphon shape thermal insulation involucrum 6 is spelled by two parts
Connect, be referred to as the first curved shell 73 of curved shell 72 and second；Each two ends of bend loss 52 is connected with straight length 51, should
Thermal insulation involucrum 6 outside two straight lengths 51 is referred to as straight shell；The curved shell 73 of the first curved shell 72 and second is all fixed respectively
On two straight shells 71, fixed generally by the mode of welding；By fixing two straight shells 71, so as to secure indirectly
The one curved shell 73 of curved shell 72 and second, the curved shell 73 of the first curved shell 72 and second is not contacted with bend loss 52.Preferably, it is described
Thermal insulation involucrum 6 is made up of steel, with enough rigidity.
In one preferred embodiment, as shown in Figure 7, described first curved one end of shell 72 is connected with straight shell 71, separately
One end is embedded into the second curved shell 73, i.e., the internal diameter size of the second curved openend of shell 73 is slightly larger than or is open equal to the first curved shell 72
The outside dimension at end；It is further preferred that include the different wide-mouth sections and slot section of diameter dimension in the described second curved shell 73, it is narrow
Mouth Duan Yuzhi shells 71 are connected, and the size of slot section is consistent with the size of the first curved shell 72；The outside dimension of first curved shell is not more than
The internal diameter size of wide-mouth section, the first curved shell is inserted into wide-mouth section, and the size of wide-mouth section can allow for the first curved shell 72 and be embedded into
Wide-mouth intersegmental part, i.e. wide-mouth section being capable of the curved shells 72 of socket joint first；The depth dimensions of the wide-mouth section is inserted into more than the first curved shell
Length dimension in wide-mouth section, i.e., described wide-mouth section is goed deep into enough, when two straight shells 71 are respectively with the first curved shell 72
It is fixed on the second curved assembling of shell 73 behind the outside of connection tube bank 5, wide-mouth section can still allow for the second curved shell 73 further to wide
Certain distance is stretched into mouth section, thermal stress is discharged so as to pass through the relative movement of the first curved shell 73 of curved shell 72 and second.
In one preferred embodiment, as shown in Fig. 3, Fig. 4 and Fig. 5, the thermal insulation board is by plate of the section for c-type
Material is docked and/or overlapped for the sheet material of I types with section and forms；Or
The thermal insulation board is docked by two sections for the sheet material of c-type and/or overlap joint is formed；Or
The thermal insulation board is docked by four sections for the sheet material of I types and/or overlap joint is formed.The c-type is also referred to as Contraband
Type.
Preferably, the thermal insulation board is interior thermal insulation board 61 and/or end baffle plate 62.When the thermal insulation involucrum 6 to be double-deck or
During person's sandwich construction, its each layer is all made up of the thermal insulation board, and the specific setting form of thermal insulation board is still selected from above-mentioned
A certain kind in three kinds of forms；
When the thermal insulation involucrum 6 is double-deck or sandwich construction, steam (vapor) outlet connecting tube 2 is tied by pipe clamp 4 first
Connection tube bank 5 is tied up into, then interior thermal insulation board 61 is installed, then lays isolation pad 64, end baffle plate 62 is finally installed, and can be according to setting
Meter requires to screw in fixing screws 65.
Above in association with preferred embodiment the present invention is described, but these embodiments are only exemplary
, only play illustrative effect.On this basis, a variety of replacements and improvement can be carried out to the present invention, these each fall within this
In the protection domain of invention.
Claims (10)
1. a kind of temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure, it is characterised in that including steam generator
Steam (vapor) outlet tube sheet (1), spiral heat exchange tube (3) and steam (vapor) outlet connecting tube (2), wherein, the steam (vapor) outlet connecting tube (2) one
End is connected with steam (vapor) outlet tube sheet (1), and the other end is connected with spiral heat exchange tube (3)；
The steam (vapor) outlet connecting tube (2) has multiple, and is bundled into connection tube bank (5) by pipe clamp (4)；
Thermal insulation involucrum (6) is coated with outside the tube bank (5),
The thermal insulation involucrum (6) is arranged on pipe clamp (4),
The thermal insulation involucrum (6) leaves predetermined gap with being connected between tube bank (5).
2. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 1, it is characterised in that
The rectangular in cross-section of thermal insulation involucrum (6).
3. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 1, it is characterised in that
The thermal insulation involucrum (6) includes interior thermal insulation board (61) and end baffle plate (62),
Wherein, helium layer (63) is left between interior thermal insulation board (61) and end baffle plate (62).
4. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 3, it is characterised in that
Between the interior thermal insulation board (61) and end baffle plate (62), i.e., it is provided with isolation pad in the helium layer (63)
(64)。
5. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 4, it is characterised in that
There is spacing form, the spacing form includes complete spacing footpath between the interior thermal insulation board (61) and end baffle plate (62)
To one or more of the circumferential spacing and radial direction in spacing.
6. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 5, it is characterised in that
When spacing form between interior thermal insulation board (61) and end baffle plate (62) is completely spacing,
The thermal insulation involucrum (6) also includes fixing screws (stud, pin etc.) (65),
Manhole is all offered on interior thermal insulation board (61) and end baffle plate (62),
The fixing screws (65) sequentially pass through the manhole of end baffle plate (62), isolation pad (64) and interior thermal insulation board (61)
Manhole, and end baffle plate (62), isolation pad (64) and interior thermal insulation board (61) are fixed on pipe clamp (4).
7. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 5, it is characterised in that
When spacing form between interior thermal insulation board (61) and end baffle plate (62) is radially circumferential spacing,
The thermal insulation involucrum (6) also includes fixing screws (65),
Waist through hole is all offered on interior thermal insulation board (61) and end baffle plate (62), the length direction of the waist through hole is with being somebody's turn to do
The axis direction of thermal insulation involucrum (6) is consistent where waist through hole；
The fixing screws (65) sequentially pass through the waist through hole of end baffle plate (62), isolation pad (64) and interior thermal insulation board (61)
Waist through hole, and end baffle plate (62), isolation pad (64) and interior thermal insulation board (61) are fixed on pipe clamp (4).
8. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 5, it is characterised in that
When spacing form between interior thermal insulation board (61) and end baffle plate (62) is radially spacing,
Do not open up manhole/waist through hole on interior thermal insulation board (61) and end baffle plate (62), interior thermal insulation board (61) and it is outer every
Hot plate (62) clamps isolation pad (64) together, interior thermal insulation board (61) and end baffle plate (62) can along thermal insulation involucrum (6) axis
Direction is relative to be slided.
9. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 3, it is characterised in that
The thermal insulation board is docked and/or overlapped with the sheet material that section is I types by the sheet material that section is c-type and formed；Or
The thermal insulation board is docked by two sections for the sheet material of c-type and/or overlap joint is formed；Or
The thermal insulation board is docked by four sections for the sheet material of I types and/or overlap joint is formed.
10. temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure according to claim 9, it is characterised in that
The thermal insulation board is interior thermal insulation board (61) and/or end baffle plate (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710312675.3A CN106949453A (en) | 2017-05-05 | 2017-05-05 | Temperature gas cooled reactor steam generator steam (vapor) outlet connecting pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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