CN205479854U - Seal structure between inside and outside blowing pipe of long telescopic steam soot blower - Google Patents
Seal structure between inside and outside blowing pipe of long telescopic steam soot blower Download PDFInfo
- Publication number
- CN205479854U CN205479854U CN201620222660.9U CN201620222660U CN205479854U CN 205479854 U CN205479854 U CN 205479854U CN 201620222660 U CN201620222660 U CN 201620222660U CN 205479854 U CN205479854 U CN 205479854U
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- blowing pipe
- sealing
- letter
- gland
- sealing device
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Abstract
The utility model provides a seal structure between inside and outside blowing pipe of long telescopic steam soot blower, it includes blow blowing pipe, interior blowpipe outward and blow the sealing device between blowing pipe and the interior blowpipe outward, wherein, sealing device is including sealed, the servo loop of the automatic tracking that sets gradually, gland packing and gland, automatic tracking is sealed to be set up at sealing device foremost, installation grommet and sealing filler group in the gland packing, gland passes through the terminal surface fixed connection of flange connecting bolt and disc spring and gland packing. Seal structure can make the soot blower keep sealing filler's pressure stability at the in -process of operation, and is sealed effectual.
Description
Technical field
This utility model relates to petrochemical equipment technical field, steam soot blowing in particularly a kind of coal unit
Sealing structure in device.
Background technology
The large thermal power plant of China is coal unit, and what in unit running process, boiler generating surface accumulated amasss
Ash and slagging scorification need to clear up in time, the most not only affect the thermal efficiency of boiler, go back entail dangers to peace time serious
Row for the national games, therefore, reliable slag-blowing equipmemt is essential.The soot blowing technology being applied to station boiler includes steaming
The forms such as vapour soot blowing, the gentle impulse soot blowing of sonic soot blowing, wherein steam blowing technique is most widely used.Steam
Vapour soot blower is for purging the dust stratification in superheater, reheater and air preheater tube bank.Large-sized station boiler
The width of horizontal flue, typically between 10～20m, suitably applies long telescopic steam sootblower.During soot blowing
The lance tube of long telescopic steam sootblower is at the uniform velocity threadingly advanced and retreats, postpartum mastitis blowing pipe i.e. lance tube
Whole stroke passes boiler setting, and interior blowpipe (steam supply pipe) is static to lance tube steam supply.Due to telescopic steaming
Vapour soot blower carries out straight line and rotary motion simultaneously, and working trajectory is complex, therefore seals filling out in structure
Material easily occurs crack in running, causes gun barrel bite, flying dust and sootblowing dielectric (steam or hydrophobic)
Situation about revealing, needs the operation stopping soot blower even being cut off time serious.
Utility model content
Technical problem to be solved in the utility model is the defect overcoming prior art, it is provided that a kind of steam blows
Sealing structure between blowing pipe inside and outside ash device, the filling pressure in airtight and watertight padding case in soot blower operating process
Keep stable, good sealing effect.
Of the present utility model technical problem is that with following technical proposals realize:
A kind of sealing structure grown inside and outside telescopic steam sootblower between blowing pipe, it include postpartum mastitis blowing pipe,
Sealing device between interior blowpipe and postpartum mastitis blowing pipe and interior blowpipe, wherein, described sealing device includes successively
Arrange from motion tracking sealing, servo loop, stuffing box and gland, described be sealingly disposed in from motion tracking
Sealing device foremost, installs grommet and airtight and watertight padding group in described stuffing box, gland passes through flange
Connecting bolt and butterfly spring are fixing with the end face of stuffing box to be connected.
Sealing structure between blowing pipe inside and outside the telescopic steam sootblower of above-mentioned length, described airtight and watertight padding group bag
Including end plug letter and intermediate filler letter, two end plug letters are respectively placed in the two ends of stuffing box, and end is filled out
The inner side of material letter is respectively provided with intermediate filler letter, is grommet between two intermediate filler letters.
Sealing structure between blowing pipe inside and outside the telescopic steam sootblower of above-mentioned length, described end plug letter is
The packing ring woven by asbestos cord is constituted.
Sealing structure between blowing pipe inside and outside the telescopic steam sootblower of above-mentioned length, described intermediate filler letter bag
Including 6 circle fillers, the 1st circle and the 6th circle filler uses carbon fiber leaching tetrafluoro packing, the 2nd～5 middle circles to fill out
Dress graphite packing.
Sealing device of the present utility model is arranged between the postpartum mastitis blowing pipe of soot blower and interior blowpipe, seals effect
The best, the service life of filler is long.Stuffing box filler is that carbon fiber soaks tetrafluoro packing, the 2nd～5 middle circles
Loading the compound packing of graphite packing, two kinds of airtight and watertight paddings are had complementary advantages, and meet and are continually changing filling pressure
The requirement of airtight and watertight padding.The gland of stuffing box end is in butterfly spring and the effect of flange bolt
Under, make the thrust that gland is certain to the filler retention in stuffing box, it is ensured that sealing device No leakage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, each list of reference numerals is: 1, postpartum mastitis blowing pipe, 2, interior blowpipe, 3, seal from motion tracking, 4,
Servo loop, 5, end grommet, 6, end plug letter, 7, intermediate filler letter, 8, middle grommet, 9, fill out
Material gland, 10, butterfly spring, 11, flange bolt.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail.
As it is shown in figure 1, this utility model includes the postpartum mastitis blowing pipe 1 in long telescopic steam sootblower and interior
Blowpipe 2, the gap location between postpartum mastitis blowing pipe 1 and interior blowpipe 2 installs sealing device, described sealing device
3, servo loop 4, stuffing box and gland 9 is sealed from motion tracking including set gradually.Described automatically with
Track seals 3 and is arranged on sealing device foremost, and its rear portion is servo loop 4 and stuffing box, inside stuffing box
For grommet and airtight and watertight padding group.Gland 9 connects by flange bolt 11 is fixing with the end face of stuffing box
Connect, be used for compressing grommet and airtight and watertight padding group.Two disk springs 10 of double are installed on flange bolt 11,
Gland 9 is made to remain the pressure to filler the extruding of bolt by disk spring, even if filler has
Abrasion also can be compensated, it is ensured that the sealing of postpartum mastitis blowing pipe end is tight, No leakage.
Described sealing from motion tracking 3 is made up of outer shroud and internal ring two parts, and internal ring and outer shroud are split-type structural.
Described internal ring and interior blowpipe 2 matched in clearance, internal ring can move axially back and forth along interior blowpipe 2, and displacement is 3mm.
The middle part of described outer shroud has sealing chamber, and it is indoor and can radially 360 ° of rotations that inner ring sleeve is connected on annular seal space.
In the structure that internal ring and outer shroud cooperate beneficially running, internal ring moves radially with interior blowpipe, it is to avoid interior
The bore wear of ring, fundamentally solves the leakage problem of interior blowpipe and the gap existence of outer blowpipe.Internal ring
It is socketed in inside outer shroud, conveniently detachable.
Described servo loop 4 is the general name of servosystem and ring.Wherein servosystem is also known as servo system, is to use
Accurately follow or reappear the feedback control system of certain process, it can according to the requirement of control command,
Power is amplified, converts and process with regulation and control etc., control driving means export can arbitrarily change moment,
Speed and position.Ring is feedback signal reception and processing links in servosystem, and the precision making control is higher.
From motion tracking seal 3 and servo loop 4 collectively form sliding sealing device, postpartum mastitis blowing pipe and interior blowpipe it
Between position be continually changing during, make internal ring and outer shroud cooperate by automatic control system, it is ensured that
Sealing effectiveness under compound movement situation.
Grommet is also called " support ring ", is made up of grommet 8 in the middle of two end grommets 5 and, grommet
Stuffing box is divided into Liang Ge filler chamber.Filler chamber is internal fills airtight and watertight padding group.Each airtight and watertight padding group bag
Including end plug letter 6 and intermediate filler letter 7, the inner side of two end grommets 5 is respectively provided with end plug letter 6,
The inner side of two end plug letters 6 respectively arranges intermediate filler letter 7, between two intermediate filler letters 7 is
Middle grommet 8.Described end plug letter 6 is to be made up of the packing ring of asbestos cord braiding, asbestos cord system
The packing ring become is difficult to loose, good sealing effect.Intermediate filler letter 7 includes 6 circle fillers, the 1st circle and the
6 circle fillers use carbon fiber leaching tetrafluoro packing, carbon fiber leaching tetrafluoro packing to have intensity height, shock resistance
The feature of preferable and high pressure resistant and certain high temperature (< 350 DEG C)；The 2nd～5 middle circles load 4 circle graphite packings,
The sealing of graphite packing, lubricity and resilience are excellent, it is ensured that the intensity of filler.This soaked by carbon fiber
The compound type of feed of tetrafluoro packing and graphite packing composition can make two kinds of airtight and watertight paddings have complementary advantages, thus
Meet seal request when filling pressure is continually changing.From coil to coil is used to load during intermediate filler letter filling packing
Method, adjacent packing otch staggers 120 ° and makes each circle packing uniform force and can avoid getting loose or mutually twining
Around.
Claims (4)
1. a sealing structure between blowing pipe inside and outside long telescopic steam sootblower, it includes postpartum mastitis soot blowing
Pipe (1), sealing device between interior blowpipe (2) and postpartum mastitis blowing pipe (1) and interior blowpipe (2), its
Be characterised by, described sealing device include setting gradually from motion tracking seal (3), servo loop (4),
Stuffing box and gland (9), described from motion tracking seal (3) be arranged on sealing device foremost,
Installing grommet and airtight and watertight padding group in described stuffing box, gland (9) passes through flange bolt (11)
Fixing with the end face of butterfly spring (10) and stuffing box it is connected.
Inside and outside the telescopic steam sootblower of length the most according to claim 1, the sealing between blowing pipe is tied
Structure, it is characterised in that described airtight and watertight padding group includes end plug letter (6) and intermediate filler letter (7),
Two end plug letters (6) are respectively placed in the two ends of stuffing box, and the inner side of end plug letter (6) sets respectively
Put intermediate filler letter (7), be grommet between two intermediate filler letters (7).
Inside and outside the telescopic steam sootblower of length the most according to claim 2, the sealing between blowing pipe is tied
Structure, it is characterised in that described end plug letter (6) is that the packing ring woven by asbestos cord is constituted.
Inside and outside the telescopic steam sootblower of length the most according to claim 3, the sealing between blowing pipe is tied
Structure, it is characterised in that described intermediate filler letter (7) includes that 6 circle fillers, the 1st circle and the 6th circle filler are adopted
Soaking tetrafluoro packing with carbon fiber, the 2nd～5 middle circles load graphite packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222660.9U CN205479854U (en) | 2016-03-22 | 2016-03-22 | Seal structure between inside and outside blowing pipe of long telescopic steam soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620222660.9U CN205479854U (en) | 2016-03-22 | 2016-03-22 | Seal structure between inside and outside blowing pipe of long telescopic steam soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205479854U true CN205479854U (en) | 2016-08-17 |
Family
ID=56651241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620222660.9U Expired - Fee Related CN205479854U (en) | 2016-03-22 | 2016-03-22 | Seal structure between inside and outside blowing pipe of long telescopic steam soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205479854U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606355A (en) * | 2017-10-26 | 2018-01-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Hermetical connecting structure for molten iron rotation desulfurization rifle |
| CN107760827A (en) * | 2017-10-26 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Rotation desulfurization rifle for molten iron pretreatment |
| CN108775456A (en) * | 2018-07-25 | 2018-11-09 | 张家港市凯利雅特种纺织纱线有限公司 | A kind of jet chimney sealing structure for spandex yarn heating |
-
2016
- 2016-03-22 CN CN201620222660.9U patent/CN205479854U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606355A (en) * | 2017-10-26 | 2018-01-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Hermetical connecting structure for molten iron rotation desulfurization rifle |
| CN107760827A (en) * | 2017-10-26 | 2018-03-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Rotation desulfurization rifle for molten iron pretreatment |
| CN108775456A (en) * | 2018-07-25 | 2018-11-09 | 张家港市凯利雅特种纺织纱线有限公司 | A kind of jet chimney sealing structure for spandex yarn heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |