CN105042081A - Sealing device and installation structure for shaft penetrating air flue - Google Patents
Sealing device and installation structure for shaft penetrating air flue Download PDFInfo
- Publication number
- CN105042081A CN105042081A CN201510546027.5A CN201510546027A CN105042081A CN 105042081 A CN105042081 A CN 105042081A CN 201510546027 A CN201510546027 A CN 201510546027A CN 105042081 A CN105042081 A CN 105042081A
- Authority
- CN
- China
- Prior art keywords
- sealing
- seal arrangement
- hole
- axle
- air channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 131
- 238000009434 installation Methods 0.000 title claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 title abstract 4
- 238000012856 packing Methods 0.000 claims description 45
- 210000004907 gland Anatomy 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000945 filler Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a sealing device. The sealing device is used for sealing a shaft (8) penetrating an air flue. The sealing device comprises a sealing box (1) fixed to the outer side of the wall (9) of the air flue. The sealing box (1) surrounds the shaft (8), and an interval is formed between the sealing box (1) and the shaft (8). A sealing filler (3) is arranged in one part of the interval. The sealing box (1) is provided with a sealing air hole penetrating the wall of the sealing box (1). The sealing device comprises a sealing air pipe (4) communicated to the other part of the interval through the sealing air hole. The invention further discloses an installation structure comprising the sealing device, wherein the installation structure is used for the shaft penetrating the air flue. The sealing device has the good sealing effect within a longer period.
Description
Technical field
The present invention relates to field of sealing technology, particularly, relate to a kind of seal arrangement.In addition, the invention still further relates to a kind of mounting structure of the axle through air channel.
Background technique
Sealing is anti-fluid or solid particle from leaking between adjacent junction plane and preventing introduced contaminants from invading the measure of machinery equipment inside as dust and moisture etc., can be divided into static seal and motive sealing two class greatly.
Sealing through the axle in air channel is an insoluble problem always, what the axle of current a big chunk all adopted is stuffing box packing sealing, but because the spinning movement of axle is more frequent, stuffing box packing is easily out of shape, aging, produce larger gap simultaneously, thus cause the wind direction external leakage in air channel.In addition, the stuffing box packing kind negligible amounts that air channel uses, when the seal request for the axle through air channel is higher, the stuffing box packing of general quality is not competent, adopts the stuffing box packing of high-quality, with high costs, is unfavorable for cost-saving.
In view of this, need to provide a kind of novel seal arrangement within relatively long period with excellent sealing effect.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of seal arrangement, and sealing device has excellent sealing effect within relatively long period.
In addition, another technical problem to be solved by this invention is to provide a kind of mounting structure of the axle through air channel, should have excellent sealing effect through the seal arrangement of the mounting structure of the axle in air channel within relatively long period.
In order to solve the problems of the technologies described above, the invention provides a kind of shaft seal for hermetically passing air channel, sealing device comprises the sealing case be fixed on outside wind path wall, described sealing case is arranged around described axle also and between described axle has gap, stuffing box packing is provided with in the part in described gap, described sealing case is provided with the sealing air holes of the wall running through described sealing case, and described seal arrangement comprises the sealing air pipe being communicated to the another part in described gap by described sealing air holes.
Preferably, described sealing case comprises first cylindrical portion with the first through hole and second cylindrical portion with the second through hole, the center line of described first through hole and described second through hole overlaps, and the aperture of described first through hole is less than described second through hole, described first cylindrical portion is fixed on outside described wind path wall, described stuffing box packing is arranged in described second cylindrical portion, described sealing air holes is arranged in described second cylindrical portion, the end of described second cylindrical portion is provided with sealing gland, described sealing gland can be inserted at least partially in described gap and the end of this part is close to described stuffing box packing can compress described stuffing box packing.
Preferably, described sealing gland comprises annular plate and outstanding for being inserted into annular boss described gap from the side of described annular plate.
Preferably, described annular plate is provided with the first installation through hole, the end of described second cylindrical portion is correspondingly provided with the second installation through hole, and described sealing gland is fixed on described sealing case by the fastening piece installing through hole and described second installation through hole through described first.
Preferably, described seal arrangement also comprise be arranged in described gap for the wind from described sealing air pipe being assigned to point vane that the inwall along described sealing case and the outer surface along described axle flow.
Preferably, described point of vane comprises the first wind distributing groove being arranged at its inner peripheral surface, the second wind distributing groove being arranged at its outer surface and is communicated with the through hole of described first wind distributing groove and described second wind distributing groove.
Preferably, described seal arrangement also comprises the seal ring of the another part being arranged at described gap.
Preferably, the internal surface of described seal ring is toothed surface, and the tip part of described toothed surface is concordant with the internal surface of described axle.
Preferably, described sealing case is by outside the wind path wall that is fixedly welded on described air channel.
Preferably, one end away from described air channel of described sealing case is closed.
In addition, on the basis stating the technological scheme of seal arrangement on the invention, the present invention also provides a kind of mounting structure of the axle through air channel, should comprise air channel, through the axle in described air channel and seal arrangement of the present invention through mounting structure of the axle in air channel.
Preferably, described seal arrangement is arranged at the position in the connection air channel at the two ends of described axle symmetrically.
Shaft seal for hermetically passing air channel of the present invention is owing to comprising the sealing case be fixed on outside wind path wall, described sealing case is arranged around described axle also and between described axle has gap, stuffing box packing is provided with in the part in described gap, described sealing case is provided with the sealing air holes of the wall running through described sealing case, described seal arrangement comprises the sealing air pipe being communicated to the another part in described gap by described sealing air holes, thus shutoff and step-down can be carried out by described stuffing box packing to the leakage wind leaked in air channel in described gap, and sealing air imported in described gap by described sealing air pipe and liquidate with leakage wind, and the final wind direction outward leakage stoped in air channel, meanwhile, seal arrangement of the present invention due to have employed sealing air to reveal wind liquidate and shutoff thus the technical requirements reducing stuffing box packing (if what circulate in air channel is hot blast, sealing air can also reduce the temperature of stuffing box packing, thus increase the working life of stuffing box packing), therefore general stuffing box packing is adopted, thus saved the expense adopting the stuffing box packing of high-quality.The mounting structure of the axle through air channel of the present invention is owing to comprising seal arrangement of the present invention, and therefore it has above advantage equally.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the schematic diagram passing the mounting structure of the axle in air channel according to the specific embodiment of the present invention;
Fig. 2 is the zoomed-in view passing the shaft seal in air channel of the a-quadrant in Fig. 1;
Fig. 3 is the side view passing the mounting structure of the axle in air channel in Fig. 1.
Description of reference numerals
1 sealing case 2 seal ring
3 stuffing box packing 4 sealing air pipes
5 sealing gland 6 points vanes
7 air channel 8 axles
9 wind path wall 11 first cylindrical portion
12 second cylindrical portion
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of shaft seal for hermetically passing air channel, particularly, shown in Fig. 1, Fig. 2 and Fig. 3, sealing device comprises the sealing case 1 be fixed on outside wind path wall 9, described sealing case 1 is arranged around described axle 8 also and between described axle 8 has gap, stuffing box packing 3 (as packing) is provided with in the part in described gap, described sealing case 1 is provided with the sealing air holes of the wall running through described sealing case 1, described seal arrangement comprises the sealing air pipe 4 being communicated to the another part in described gap by described sealing air holes
It should be noted that, the quantity of described stuffing box packing 3, described sealing case 1 and the specific constructive form of sealing air pipe 4 and the concrete Placement between them can be arranged as required, and these all belong within technical conceive scope of the present invention.
The seal arrangement of the axle 8 for hermetically passing air channel of the present invention is owing to comprising the sealing case 1 be fixed on outside wind path wall 9, described sealing case 1 is arranged around described axle 8 also and between described axle 8 has gap, stuffing box packing 3 is provided with in the part in described gap, described sealing case 1 is provided with the sealing air holes of the wall running through described sealing case 1, described seal arrangement comprises the sealing air pipe 4 being communicated to the another part in described gap by described sealing air holes, thus on the one hand can carry out shutoff and step-down by described stuffing box packing 3 to the leakage wind leaked in air channel in described gap, by described sealing air pipe 4 sealing air can be imported in described gap on the other hand and liquidate with leakage wind, and the final wind direction outward leakage stoped in air channel, meanwhile, seal arrangement of the present invention due to have employed sealing air to reveal wind liquidate and shutoff thus the technical requirements reducing stuffing box packing 3 (if what circulate in air channel is hot blast, sealing air can also reduce the temperature of stuffing box packing 3, thus increase the working life of stuffing box packing 3), therefore general stuffing box packing 3 is adopted, and then saved the expense adopting the stuffing box packing 3 of high-quality.
In seal arrangement of the present invention, preferably, described sealing case 1 comprises first cylindrical portion 11 with the first through hole and second cylindrical portion 12 with the second through hole, the center line of described first through hole and described second through hole overlaps, and the aperture of described first through hole is less than described second through hole, described first cylindrical portion 11 is fixed on outside described wind path wall 9, described stuffing box packing 3 is arranged in described second cylindrical portion 12, described sealing air holes is arranged in described second cylindrical portion 12, the end of described second cylindrical portion 12 can be provided with sealing gland 5, described sealing gland 5 can be inserted at least partially in described gap and the end of this part is close to described stuffing box packing 3 can compress described stuffing box packing 3, thus the described stuffing box packing 3 that can compress in described gap, reduce the leakage approach revealing wind, reduce the pressure revealing wind.
Certainly, the end of described second cylindrical portion 12 can not be provided with sealing gland 5, and such as required, one end away from described air channel of described sealing case 1 is closed, and the sealing case 1 of design like this has sealing effect relatively preferably.
In above-mentioned seal arrangement of the present invention, particularly, described sealing gland 5 comprises annular plate and outstanding for being inserted into annular boss described gap from the side of described annular plate, thus annular boss to be inserted in described gap and to compress described stuffing box packing 3, also makes the structure of described sealing gland 5 simple as far as possible simultaneously.
In above-mentioned seal arrangement of the present invention, preferably, described annular plate is provided with the first installation through hole, the end of described second cylindrical portion 12 is correspondingly provided with the second installation through hole, described sealing gland 5 is fixed on described sealing case 1 by the fastening piece installing through hole and described second installation through hole through described first, thus the tightness degree of described stuffing box packing 3 can be controlled by the tightness controlling fastening piece, when described stuffing box packing 3 becomes lax through long-term use, the leakage approach that tightening fastener parts can continue to keep revealing wind is relatively less, the pressure revealing wind is relatively low.
In seal arrangement of the present invention, more preferably, described seal arrangement also comprise be arranged in described gap for the wind from described sealing air pipe 4 being assigned to point vane 6 that the inwall along described sealing case 1 and the outer surface along described axle 8 flow, thus make sealing air directly can carry out shutoff and step-down to the leakage wind that the inwall along described sealing case 1 and the outer surface along described axle 8 flow, and then effectively improve sealing effect.
In above-mentioned seal arrangement of the present invention, particularly, described point of vane 6 comprises the first wind distributing groove being arranged at its inner peripheral surface, the second wind distributing groove being arranged at its outer surface and is communicated with the through hole of described first wind distributing groove and described second wind distributing groove, while ensureing point wind energy power of described point vane 6, reduce its manufacturing difficulty.
In seal arrangement of the present invention, further preferably, described seal arrangement also comprises the seal ring 2 of the metal of the another part being arranged at described gap, particularly, the internal surface of described seal ring 2 is toothed surface, and the tip part of described toothed surface is concordant with the internal surface of described axle 8, thus the pressure of seal ring 2 buffering leakage greatly wind can be utilized.
In seal arrangement of the present invention, particularly, described sealing case 1 by outside the wind path wall 9 that is fixedly welded on described air channel, thus outside the wind path wall 9 making sealing case 1 be fixed on described air channel while, seal the gap between described sealing case 1 and wind path wall 9.
In addition, the present invention also provides a kind of mounting structure of the axle through air channel, comprises air channel, through the axle 8 in described air channel and seal arrangement of the present invention.
In the mounting structure of the axle through air channel of the present invention, preferably, described seal arrangement is arranged at the position in the connection air channel at the two ends of described axle 8 symmetrically, thus can the two ends of the axle in hermetically passing air channel simultaneously.
The seal arrangement of the axle 8 for hermetically passing air channel of the present invention is owing to comprising the sealing case 1 be fixed on outside wind path wall 9, described sealing case 1 is arranged around described axle 8 also and between described axle 8 has gap, stuffing box packing 3 is provided with in the part in described gap, described sealing case 1 is provided with the sealing air holes of the wall running through described sealing case 1, described seal arrangement comprises the sealing air pipe 4 being communicated to the another part in described gap by described sealing air holes, thus shutoff and step-down can be carried out by described stuffing box packing 3 to the leakage wind leaked in air channel in described gap, and sealing air imported in described gap by described sealing air pipe 4 and liquidate with leakage wind, and the final wind direction outward leakage stoped in air channel, meanwhile, seal arrangement of the present invention due to have employed sealing air to reveal wind liquidate and shutoff thus the technical requirements reducing stuffing box packing 3 (if what circulate in air channel is hot blast, sealing air can also reduce the temperature of stuffing box packing 3, thus increase the working life of stuffing box packing 3), therefore general stuffing box packing 3 is adopted, and then saved the expense adopting the stuffing box packing 3 of high-quality.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (12)
1. a seal arrangement, sealing device is used for the axle (8) in hermetically passing air channel, described seal arrangement comprises the sealing case (1) being fixed on wind path wall (9) outside, described sealing case (1) around described axle (8) arrange and and between described axle (8), there is gap, stuffing box packing (3) is provided with in the part in described gap, it is characterized in that, described sealing case (1) is provided with the sealing air holes of the wall running through described sealing case (1), described seal arrangement comprises the sealing air pipe (4) being communicated to the another part in described gap by described sealing air holes.
2. seal arrangement according to claim 1, it is characterized in that, described sealing case (1) comprises first cylindrical portion (11) with the first through hole and second cylindrical portion (12) with the second through hole, the center line of described first through hole and described second through hole overlaps, and the aperture of described first through hole is less than described second through hole, described first cylindrical portion (11) is fixed on described wind path wall (9) outside, described stuffing box packing (3) is arranged in described second cylindrical portion (12), described sealing air holes is arranged on described second cylindrical portion (12), the end of described second cylindrical portion (12) is provided with sealing gland (5), described sealing gland (5) can be inserted at least partially in described gap and the end of this part is close to described stuffing box packing (3) can compress described stuffing box packing (3).
3. seal arrangement according to claim 2, is characterized in that, described sealing gland (5) comprises annular plate and outstanding for being inserted into annular boss described gap from the side of described annular plate.
4. seal arrangement according to claim 3, it is characterized in that, described annular plate is provided with the first installation through hole, the end of described second cylindrical portion (12) is correspondingly provided with the second installation through hole, and described sealing gland (5) is fixed on described sealing case (1) by the fastening piece installing through hole and described second installation through hole through described first.
5. seal arrangement according to claim 1, it is characterized in that, described seal arrangement also comprise be arranged in described gap for the wind from described sealing air pipe (4) being assigned to point vane (6) that the inwall along described sealing case (1) and the outer surface along described axle (8) flow.
6. seal arrangement according to claim 5, it is characterized in that, described point of vane (6) comprises the first wind distributing groove being arranged at its inner peripheral surface, the second wind distributing groove being arranged at its outer surface and is communicated with the through hole of described first wind distributing groove and described second wind distributing groove.
7. seal arrangement according to claim 1, is characterized in that, described seal arrangement also comprises the seal ring (2) of the another part being arranged at described gap.
8. seal arrangement according to claim 7, is characterized in that, the internal surface of described seal ring (2) is toothed surface, and the tip part of described toothed surface is concordant with the internal surface of described axle (8).
9. seal arrangement according to claim 1, is characterized in that, described sealing case (1) is by being fixedly welded on wind path wall (9) outside in described air channel.
10. seal arrangement according to claim 1, is characterized in that, one end away from described air channel of described sealing case (1) is closed.
11. 1 kinds of mounting structures through the axle in air channel, comprise air channel and the axle (8) through described air channel, it is characterized in that, described mounting structure also comprises seal arrangement as claimed in any of claims 1 to 10.
The mounting structure of 12. axles through air channel according to claim 11, is characterized in that, described seal arrangement is two and is arranged at the position through described air channel of described axle (8) symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546027.5A CN105042081A (en) | 2015-08-31 | 2015-08-31 | Sealing device and installation structure for shaft penetrating air flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546027.5A CN105042081A (en) | 2015-08-31 | 2015-08-31 | Sealing device and installation structure for shaft penetrating air flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105042081A true CN105042081A (en) | 2015-11-11 |
Family
ID=54448891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510546027.5A Pending CN105042081A (en) | 2015-08-31 | 2015-08-31 | Sealing device and installation structure for shaft penetrating air flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105042081A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000213652A (en) * | 1999-01-25 | 2000-08-02 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal structure |
| CN201330850Y (en) * | 2008-11-13 | 2009-10-21 | 刘红革 | Follow-up air-lock type sealing device |
| CN201866399U (en) * | 2010-04-15 | 2011-06-15 | 马鞍山市荣亿密封材料有限责任公司 | Shaft seal device for high-temperature hot air door |
| CN201912913U (en) * | 2011-01-21 | 2011-08-03 | 辽宁工业大学 | Stirring shaft sealing structure of stirred tank |
| CN202251971U (en) * | 2011-09-03 | 2012-05-30 | 李彩虹 | Sealing device for door shaft of air door of air duct of thermal power plant |
| US20130049303A1 (en) * | 2002-06-21 | 2013-02-28 | David C. Orlowski | Pressure Balanced Shaft Seal Assembly |
| CN203131031U (en) * | 2013-02-01 | 2013-08-14 | 高纯波 | Sealing device for hot air channel baffle shaft |
| CN203823063U (en) * | 2014-04-23 | 2014-09-10 | 赵新东 | Air door shaft sealing device of thermal power plant coal-pulverizing system |
| CN204459163U (en) * | 2015-03-11 | 2015-07-08 | 大唐鲁北发电有限责任公司 | Controller of coal mill of boiler hot air disperser door spindle sealing device |
| CN204512421U (en) * | 2015-03-06 | 2015-07-29 | 李俊 | A kind of coal pulverizer becomes loading tie-rod sealing structure |
| CN204921986U (en) * | 2015-08-31 | 2015-12-30 | 神华集团有限责任公司 | Sealing device and pass wind channel axle mounting structure |
-
2015
- 2015-08-31 CN CN201510546027.5A patent/CN105042081A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000213652A (en) * | 1999-01-25 | 2000-08-02 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal structure |
| US20130049303A1 (en) * | 2002-06-21 | 2013-02-28 | David C. Orlowski | Pressure Balanced Shaft Seal Assembly |
| CN201330850Y (en) * | 2008-11-13 | 2009-10-21 | 刘红革 | Follow-up air-lock type sealing device |
| CN201866399U (en) * | 2010-04-15 | 2011-06-15 | 马鞍山市荣亿密封材料有限责任公司 | Shaft seal device for high-temperature hot air door |
| CN201912913U (en) * | 2011-01-21 | 2011-08-03 | 辽宁工业大学 | Stirring shaft sealing structure of stirred tank |
| CN202251971U (en) * | 2011-09-03 | 2012-05-30 | 李彩虹 | Sealing device for door shaft of air door of air duct of thermal power plant |
| CN203131031U (en) * | 2013-02-01 | 2013-08-14 | 高纯波 | Sealing device for hot air channel baffle shaft |
| CN203823063U (en) * | 2014-04-23 | 2014-09-10 | 赵新东 | Air door shaft sealing device of thermal power plant coal-pulverizing system |
| CN204512421U (en) * | 2015-03-06 | 2015-07-29 | 李俊 | A kind of coal pulverizer becomes loading tie-rod sealing structure |
| CN204459163U (en) * | 2015-03-11 | 2015-07-08 | 大唐鲁北发电有限责任公司 | Controller of coal mill of boiler hot air disperser door spindle sealing device |
| CN204921986U (en) * | 2015-08-31 | 2015-12-30 | 神华集团有限责任公司 | Sealing device and pass wind channel axle mounting structure |
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Application publication date: 20151111 |
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