CN110345467A - A kind of desuperheater internal cover drum supporting device and installation method - Google Patents
A kind of desuperheater internal cover drum supporting device and installation method Download PDFInfo
- Publication number
- CN110345467A CN110345467A CN201910699397.0A CN201910699397A CN110345467A CN 110345467 A CN110345467 A CN 110345467A CN 201910699397 A CN201910699397 A CN 201910699397A CN 110345467 A CN110345467 A CN 110345467A
- Authority
- CN
- China
- Prior art keywords
- inner sleeve
- attemperator
- desuperheater
- carrying bolt
- wall
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 title claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000010276 construction Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007812 deficiency Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 238000005253 cladding Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
The present invention provides a kind of desuperheater internal cover drum supporting device and installation methods, including attemperator ontology cylinder, inner sleeve, fixed support structure and sliding supporting structure.The structure type of support device overcomes the deficiency of current technology, is a kind of desuperheater internal cover drum supporting device without the aperture on attemperator ontology cylinder.This support construction form avoids aperture and welding on attemperator ontology cylinder under the premise of having not been changed main structure, between bolts and nuts threaded connection and screw thread adjust and realize the fixation and longitudinal sliding motion of inner sleeve.One end energy free wxpansion improves the stability of support construction when inner sleeve works, and more compact structure is easily installed, has fully considered working condition thermal walking, increased the safety and reliability of attemperator operational process inner sleeve.
Description
Technical field
The present invention relates to a kind of desuperheater internal cover drum supporting device and installation methods, belong to boiler pressure part technical field.
Background technique
Superheater and reheater are the important composition components of boiler, for improving the enthalpy of steam, to improve power plant's heating power
Cycle efficieny.The attemperator of superheater and reheater is mounted on boiler tubing, changes superheater by way of spray cooling
With the vapor (steam) temperature of reheater entrance, to control the overheat of outlet, the vapor (steam) temperature of reheating.Superheater and reheater is maintained to go out
Mouth vapor (steam) temperature within the allowable range, makes tube wall temperature be no more than the operating temperature allowed, protects superheater, reheater.At present
In conventional boiler through frequently with a kind of superheater and reheater desuperheater internal cover cylinder support construction form in, inner sleeve
Supporting way aperture and is sealed with attemperator ontology cylinder on attemperator ontology cylinder using fixture nut and carrying bolt
Welding realizes the fixation to desuperheater internal cover cylinder or realizes that the fixed other end in inner sleeve one end can axial expansion sliding.Such as attached drawing
Shown in 1,2, be at present in conventional boiler through frequently with superheater and reheater desuperheater internal cover cylinder support construction form,
One is: the supporting way of inner sleeve 2 is using carrying bolt 1 by the aperture on attemperator ontology cylinder 1, and one end passes through
Liner 4 and inner sleeve 2 are welded to connect, and the other end connect with the fixture nut 1 of 1 lateral wall of attemperator ontology cylinder, finally welds
Fixation is connect, fixed support structure is formed.The second is: carrying bolt 1 passes through the aperture on attemperator ontology cylinder 1, one end top
The fixture nut 1 of hard overlay cladding 6 on 2 lateral wall of inner sleeve, the other end and 1 lateral wall of attemperator ontology cylinder connects
It connects, is finally welded and fixed, form sliding supporting structure.Since fixture nut and carrying bolt need to be opened on attemperator ontology cylinder
Kong Bingyu attemperator ontology cylinder sealing welding, is connected to certain technique with attemperator ontology cylinder sealing welding for bolt and wants
It asks.Attemperator ontology barrel outer surface seal-weld is at least welded twice；The welding of bolt head counterbore will be welded to sealed around
It carries out again afterwards.In boiler running process high temperature in burner hearth, high pressure, vibration work condition environment under, if this support construction has weldering
It connects defect, or heat treatment is not in place, be easy to cause stress to concentrate obvious, it is easily cracked, or even fracture or situations such as fall off.This
A little defects become current the art urgent problem.The art needs provide a kind of easy installation, are not necessarily to
The desuperheater internal cover drum supporting device of aperture on attemperator ontology cylinder.
Summary of the invention
The purpose of the present invention is tend to have welding defect, Yi Yingli to solve existing desuperheater internal cover cylinder support construction at present
It concentrates, it is easily cracked, or even fracture or the insufficient technical problem to fall off.
To achieve the purpose that solve the above problems, the technical solution adopted by the present invention is that providing a kind of desuperheater internal cover cylinder
Support device, it is characterised in that: including attemperator ontology cylinder, inner sleeve, fixed support structure and sliding supporting structure；It is described
Attemperator ontology cylinder in be arranged with inner sleeve；The attemperator ontology cylinder is equipped with desuperheater spray nozzle, close to desuperheat
Fixed support structure is equipped between the inner sleeve and attemperator ontology cylinder of device nozzle one end, the other end far from desuperheater spray nozzle
Sliding supporting structure is equipped between inner sleeve and attemperator ontology cylinder；The fixed support structure includes holding nut, consolidates
Determine nut and carrying bolt, is laid with holding nut, attemperator ontology in the ring-like cross-sectional periphery of inner sleeve medial wall of the tube
Fixture nut corresponding with holding nut, described carrying bolt one end are laid in the ring-like cross-sectional periphery of cylinder madial wall
Holding nut is connected, the other end is connected and fixed nut；The sliding supporting structure includes holding nut and carrying bolt, described
The ring-like cross-sectional periphery of inner sleeve medial wall of the tube on be laid with holding nut, described carrying bolt one end connects holding nut,
The end face of the other end is withstood in attemperator ontology cylinder madial wall.
Preferably, the ring-like number of cross sections of the sliding supporting structure is more than or equal to 1.
Preferably, holding nut, fixture nut and the carrying bolt of the composition fixed support structure are same ring-like
Uniformly distributed composition bolt fastening structure quantity is more than or equal to 3 in cross-sectional periphery.
Preferably, the holding nut of the composition sliding supporting structure and carrying bolt are in same ring-like cross-sectional periphery
Uniformly distributed composition bolt fastening structure quantity is more than or equal to 3.
Preferably, the carrying bolt of the composition sliding supporting structure is with attemperator ontology cylinder inboard wall contact face
Spherical surface.
The present invention also provides a kind of installation methods of desuperheater internal cover drum supporting device, which is characterized in that including walking as follows
It is rapid:
Step 1: installation fixed support structure, by fixture nut on attemperator ontology cylinder inboard wall with the branch on inner sleeve
Staybolt opposite position welds.
Step 2: holding nut is welded on the inner sleeve inner wall for held successfully hole with fixture nut opposite position.
Step 3: by the carrying bolt of full thread by the holding nut precession that has welded on inner sleeve inner wall, then with desuperheat
Soldered fixture nut is tightened on device ontology cylinder inboard wall.
Step 4: being adjusted by the screw thread of each carrying bolt ring-like on the same section, it is ensured that carrying bolt precession subtracts
In fixture nut on warm device ontology cylinder inboard wall, while keeping inner sleeve and attemperator ontology cylinder concentric, guarantee inner sleeve with
The gap of attemperator ontology cylinder inboard wall is uniform as far as possible.
Step 5: being finally fixedly secured carrying bolt and the holding nut spot welding on inner sleeve inner wall.
Step 6: installation Slidable support structure, by holding nut on the inner sleeve inner wall for having held hole successfully, with inner sleeve
The position in corresponding hole welds.
Step 7: the carrying bolt of full thread tightens support spiral shell by the holding nut precession welded on inner sleeve inner wall
Bolt withstands carrying bolt with attemperator ontology cylinder inboard wall.
Step 8: inner sleeve and attemperator ontology are made by the screw thread adjusting of each carrying bolt circumferential on same section
Cylinder is concentric, guarantees that the gap of inner sleeve and attemperator ontology cylinder inboard wall is uniform as far as possible.
Step 9: being finally fixedly secured carrying bolt and the holding nut spot welding on inner sleeve inner wall.
The support construction form for the desuperheater internal cover cylinder that the present invention is invented mentions under the premise of having not been changed main structure
The high stability of support construction, is easily installed, has fully considered working condition thermal walking, increase in attemperator operational process
The safety and reliability of sleeve.
Compared with prior art, the invention has the following beneficial effects:
1. simple and reliable for structure.
2. attemperator ontology cylinder is not necessarily to aperture and welding.
3. the defects of reducing attemperator ontology weld crack, avoids leaking.
4. the support construction of desuperheater internal cover cylinder fully considers thermal expansion curve in operation.
5. the support device of desuperheater internal cover cylinder manufactures, mounting process is simple, easy to operate.
Detailed description of the invention
Fig. 1,2 be conventional desuperheater internal cover cylinder fixed support structure schematic diagram at present.
Fig. 3 is attemperator schematic diagram.
Fig. 4 is a kind of desuperheater internal cover drum supporting device inner sleeve fixed support structure schematic diagram provided by the invention, is
A-A view in Fig. 3.
Fig. 5 is a kind of desuperheater internal cover drum supporting device inner sleeve Slidable support structural schematic diagram provided by the invention,
For B-B view in Fig. 3.
Appended drawing reference: 1. one 4. liner of attemperator ontology cylinder 2. inner sleeve, 3. fixture nut, 5. carrying bolt one
6. 2 9. holding nut of hard overlay cladding 7. desuperheater spray nozzle, 8. carrying bolt, 10. fixture nut two
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below, such as Fig. 1,2
It is shown, be at present in conventional boiler through frequently with superheater and reheater desuperheater internal cover cylinder support construction form, it is interior
The supporting way of sleeve 2 is using carrying bolt 1 by the aperture on attemperator ontology cylinder 1, one end by liner 4 with it is interior
Sleeve 2 is welded to connect, and the other end connect with the fixture nut 1 of 1 lateral wall of attemperator ontology cylinder, is finally welded and fixed, shape
At fixed support structure.By the aperture on attemperator ontology cylinder 1, one end is withstood on 2 lateral wall of inner sleeve carrying bolt 1
Hard overlay cladding 6 on, the other end is connect with the fixture nut 1 of 1 lateral wall of attemperator ontology cylinder, be finally welded and fixed,
Form sliding supporting structure.Current technology needs the aperture on attemperator ontology cylinder 1 to weld, and makes entire attemperator bulk junction
Structure tends to have welding defect, stress concentrate it is obvious, it is easily cracked, or even fracture or the case where fall off.
It is a kind of desuperheater internal cover drum supporting device structural schematic diagram provided by the invention shown in 4,5 such as Fig. 3.Such as Fig. 3
It is shown, it is superheater desuperheater schematic diagram.Support construction section A-A at desuperheater spray nozzle 7 is this hair as shown in Figure 4
A kind of desuperheater internal cover drum supporting device inner sleeve fixed support structure of bright offer, far from several at desuperheater spray nozzle 7
Support structure section B-B is that a kind of desuperheater internal cover drum supporting device inner sleeve of as shown in Figure 5 provided by the invention slidably props up
Support structure.
Now with attemperator ontology cylinder φ 864 × 35, the attemperator of inner sleeve φ 740 × 8 is that specific embodiment illustrates this
The fixation of desuperheater internal cover cylinder and Slidable support structure that invention provides.Section A-A at desuperheater spray nozzle 7 is such as Fig. 4
Shown desuperheater internal cover cylinder fixed support structure provided by the invention, uniformly distributed 8 bolt fastening structures on circumferential circumference, far from subtracting
Three section B-Bs at warm device nozzle 7 are a kind of desuperheater internal cover drum supporting device inner sleeve provided by the invention as shown in Figure 5
Cylinder Slidable support structure, uniformly distributed 8 slidable bolt fastening structures on each ring-like circumference in section.
The mounting means of inner sleeve fixed support structure: being first by fixture nut 2 10 in 1 inner wall of attemperator ontology cylinder
It is upper to be welded with 28 opposite position of carrying bolt on inner sleeve 2.Holding nut 9 is in 2 inner wall of inner sleeve for having held hole successfully
It is upper to be welded with 2 10 opposite position of fixture nut.The carrying bolt 28 of full thread on 2 inner wall of inner sleeve by having welded
9 precession of holding nut, then tightened with fixture nut 2 10 soldered on 1 inner wall of attemperator ontology cylinder, it is same by this
The screw thread of circumferential each carrying bolt 28 is adjusted on section, it is ensured that 28 precession attemperator ontology cylinder of carrying bolt, 1 inner wall
On fixture nut 2 10 in, while keeping inner sleeve 2 and attemperator ontology cylinder 1 concentric, guarantee inner sleeve 2 and attemperator ontology
The gap of 1 inner wall of cylinder is uniform as far as possible, and final carrying bolt 28 and 9 spot welding of holding nut on 2 inner wall of inner sleeve are securely solid
It is fixed.
A kind of desuperheater internal cover drum supporting device inner sleeve Slidable support structure provided by the invention as shown in Figure 5.
The mounting means of inner sleeve Slidable support structure is: by holding nut 9 on 2 inner wall of inner sleeve for having held hole successfully, with inner sleeve
The position in 2 corresponding holes of cylinder welds.The carrying bolt 28 of full thread passes through the support spiral shell welded on 2 inner wall of inner sleeve
Female 9 precessions, tighten carrying bolt 28, withstand carrying bolt 28 with 1 inner wall of attemperator ontology cylinder.Pass through ring on same section
To the screw thread adjusting of each carrying bolt 28 keep inner sleeve 2 and attemperator ontology cylinder 1 concentric, guarantee inner sleeve 2 and desuperheat
The gap of 1 inner wall of device ontology cylinder is uniform as far as possible, finally by 9 spot welding of holding nut on carrying bolt 28 and 2 inner wall of inner sleeve
It is fixedly secured.
When inner sleeve diameter is greater than 400mm, operator, which can enter, assembles welding superheater in inner sleeve, reheater subtracts
The fixed support device and Slidable support device of warm device inner sleeve.Inner sleeve diameter is less than 400mm, using robotic
Hand, which enters, assembles welding superheater in inner sleeve, fixed support device and the Slidable support dress of the desuperheater internal cover cylinder of reheater
It sets.
The above, only presently preferred embodiments of the present invention, not to the present invention in any form with substantial limitation,
It should be pointed out that under the premise of not departing from the present invention, can also be made several for those skilled in the art
It improves and supplement, these improvement and supplement also should be regarded as protection scope of the present invention.All those skilled in the art, not
Be detached from the spirit and scope of the present invention in the case where, when a little change made using disclosed above technology contents,
Modification and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals according to the present invention are to above-mentioned
The variation, modification and evolution of any equivalent variations made by embodiment, in the range of still falling within technical solution of the present invention.
Claims (6)
1. a kind of desuperheater internal cover drum supporting device, it is characterised in that: including attemperator ontology cylinder, inner sleeve, fixed support
Structure and sliding supporting structure；Inner sleeve is arranged in the attemperator ontology cylinder；On the attemperator ontology cylinder
Equipped with desuperheater spray nozzle, fixed support knot is equipped between the inner sleeve and attemperator ontology cylinder of desuperheater spray nozzle one end
Structure is equipped with sliding supporting structure between other end inner sleeve and attemperator ontology cylinder far from desuperheater spray nozzle；Described consolidates
Determining support construction includes holding nut, fixture nut and carrying bolt, in the ring-like cross-sectional periphery of inner sleeve medial wall of the tube
It is laid with holding nut, is laid in the ring-like cross-sectional periphery of attemperator ontology cylinder madial wall corresponding with holding nut solid
Determine nut, described carrying bolt one end connects holding nut, and the other end is connected and fixed nut；The sliding supporting structure packet
Holding nut and carrying bolt are included, is laid with holding nut in the ring-like cross-sectional periphery of inner sleeve medial wall of the tube, it is described
Carrying bolt one end connects holding nut, and the end face of the carrying bolt other end is withstood in attemperator ontology cylinder madial wall.
2. a kind of desuperheater internal cover drum supporting device as described in claim 1, it is characterised in that: the sliding supporting structure
Ring-like number of cross sections is more than or equal to 1.
3. a kind of desuperheater internal cover drum supporting device as described in claim 1, it is characterised in that: the fixed support of the composition
Holding nut, fixture nut and the carrying bolt of structure composition bolt fastening structure number uniformly distributed in same ring-like cross-sectional periphery
Amount is more than or equal to 3.
4. a kind of desuperheater internal cover drum supporting device as described in claim 1, it is characterised in that: the composition sliding support
The holding nut and carrying bolt of structure composition bolt fastening structure quantity uniformly distributed in same ring-like cross-sectional periphery be greater than etc.
In 3.
5. a kind of desuperheater internal cover drum supporting device as described in claim 1, it is characterised in that: the composition sliding support
The carrying bolt and attemperator ontology cylinder inboard wall contact face of structure are spherical surface.
6. a kind of installation method of desuperheater internal cover drum supporting device, which comprises the steps of:
Step 1: installation fixed support structure, by fixture nut on attemperator ontology cylinder inboard wall with the support spiral shell on inner sleeve
Bolt opposite position welds.
Step 2: holding nut is welded on the inner sleeve inner wall for held successfully hole with fixture nut opposite position.
Step 3: by the carrying bolt of full thread by the holding nut precession that has welded on inner sleeve inner wall, then with attemperator sheet
Soldered fixture nut is tightened on body cylinder inboard wall.
Step 4: being adjusted by the screw thread with each carrying bolt ring-like on section, it is ensured that carrying bolt precession attemperator sheet
In fixture nut on body cylinder inboard wall, while keeping inner sleeve and attemperator ontology cylinder concentric, guarantees inner sleeve and attemperator
The gap of ontology cylinder inboard wall is uniform as far as possible.
Step 5: being finally fixedly secured carrying bolt and the holding nut spot welding on inner sleeve inner wall.
Step 6: installation Slidable support structure, it is opposite with inner sleeve by holding nut on the inner sleeve inner wall for having held hole successfully
The position in hole is answered to weld.
Step 7: the carrying bolt of full thread tightens carrying bolt by the holding nut precession welded on inner sleeve inner wall,
Withstand carrying bolt end face with attemperator ontology cylinder inboard wall.
Step 8: keeping inner sleeve and attemperator ontology cylinder same by the screw thread adjusting of each carrying bolt circumferential on same section
The heart guarantees that the gap of inner sleeve and attemperator ontology cylinder inboard wall is uniform as far as possible.
Step 9: being finally fixedly secured carrying bolt and the holding nut spot welding on inner sleeve inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699397.0A CN110345467A (en) | 2019-07-31 | 2019-07-31 | A kind of desuperheater internal cover drum supporting device and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910699397.0A CN110345467A (en) | 2019-07-31 | 2019-07-31 | A kind of desuperheater internal cover drum supporting device and installation method |
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| Publication Number | Publication Date |
|---|---|
| CN110345467A true CN110345467A (en) | 2019-10-18 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910699397.0A Pending CN110345467A (en) | 2019-07-31 | 2019-07-31 | A kind of desuperheater internal cover drum supporting device and installation method |
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| CN (1) | CN110345467A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140836A (en) * | 2019-12-04 | 2020-05-12 | 深圳中广核工程设计有限公司 | Nuclear power station steam generator sleeve supporting device and installation method thereof |
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| JPH09264508A (en) * | 1996-03-29 | 1997-10-07 | Mitsubishi Heavy Ind Ltd | Device for reducing superheated state in boiler |
| JPH09273710A (en) * | 1996-04-05 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Attemperator |
| CN2386328Y (en) * | 1999-07-09 | 2000-07-05 | 罗强 | Scaly-type desuperheater internal cover |
| CN201764490U (en) * | 2010-09-02 | 2011-03-16 | 上海锅炉厂有限公司 | Inner sleeve apparatus for attemperator |
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| CN207661757U (en) * | 2017-11-08 | 2018-07-27 | 上海锅炉厂有限公司 | A kind of desuperheater spray tube support device |
| CN210485688U (en) * | 2019-07-31 | 2020-05-08 | 上海锅炉厂有限公司 | Inner sleeve supporting device of desuperheater |
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2019
- 2019-07-31 CN CN201910699397.0A patent/CN110345467A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU992902A1 (en) * | 1981-09-29 | 1983-01-30 | Производственное Ордена Ленина Объединение "Красный Котельщик" | Apparatus for controlling steam temperature |
| JPH09264508A (en) * | 1996-03-29 | 1997-10-07 | Mitsubishi Heavy Ind Ltd | Device for reducing superheated state in boiler |
| JPH09273710A (en) * | 1996-04-05 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Attemperator |
| CN2386328Y (en) * | 1999-07-09 | 2000-07-05 | 罗强 | Scaly-type desuperheater internal cover |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111140836A (en) * | 2019-12-04 | 2020-05-12 | 深圳中广核工程设计有限公司 | Nuclear power station steam generator sleeve supporting device and installation method thereof |
| CN111140836B (en) * | 2019-12-04 | 2021-12-07 | 深圳中广核工程设计有限公司 | Nuclear power station steam generator sleeve supporting device and installation method thereof |
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