CN201787069U - A dynamic sealing structure for the stern shaft of an underwater pressure-bearing shell - Google Patents
A dynamic sealing structure for the stern shaft of an underwater pressure-bearing shell Download PDFInfo
- Publication number
- CN201787069U CN201787069U CN2010202858989U CN201020285898U CN201787069U CN 201787069 U CN201787069 U CN 201787069U CN 2010202858989 U CN2010202858989 U CN 2010202858989U CN 201020285898 U CN201020285898 U CN 201020285898U CN 201787069 U CN201787069 U CN 201787069U
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- Prior art keywords
- sealing
- bearing shell
- stuffing box
- underwater pressure
- adjustable
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- Expired - Lifetime
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- 238000007789 sealing Methods 0.000 title claims abstract description 88
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 abstract 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003116 impacting effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a dynamic sealing structure for a stern shaft of an underwater pressure-bearing shell. The outer taper surface of the stern shaft is in taper dynamic sealing fit with the inner taper surface of an adjustable sealing base with a stepped outer side surface; a small cylindrical surface of the stern shaft is provided with a stuffing box gland and multiple circles of stuffing boxes in sequence from inside to outside, and a sealing surface is formed between the inner hole of the underwater pressure-bearing shell and the small cylindrical surface through the stuffing boxes; the end surface of a big cylindrical surface is connected with the end surface of the underwater pressure-bearing shell by an adjusting bolt of the adjustable sealing base; and the stuffing boxes are adjusted and pressed by the stuffing box gland between the adjustable sealing base and the underwater pressure-bearing shell which is provided with a stuffing box pressing bolt arranged on the adjustable sealing base. Due to the adoption of the taper surface, the axial distance of the sealing base can be adjusted to achieve the needed pressure for sealing on the sealing surface and enable the sealing to be more reliable; and a plurality of sealing ring wires are adopted to contact the sealing so as to reduce the defects of large contact area, larger wear to the shaft, quick wear to the stuffing boxes and larger power consumption of the traditional stuffing box sealing, and the service life of the sealing structure is prolonged.
Description
Technical field
The utility model relates to sealing configuration, especially relates to a kind of dynamic seal structure of screw shaft of underwater pressure-bearing shell.
Background technique
Motive sealing is because sealing surface has moving element, the wearing and tearing of seal element are inevitable, so motive sealing is a relatively difficult technologies always, the tradition motive sealing mainly contains motive sealing of stuffing box formula and mechanical dynamic seal, packing box seal can be worn after a while owing to filler, add it is that face contact friction resistance is bigger, sealing reliability is not high, simple in structure, cost is low, seal element is shorter working life, be not suitable for poisonous and hazardous sealing,, be not suitable for yet for submerged structure owing to need often to change sealing material; Mechanical seal is that a kind of friction with axle and seal element converts two frictions between the friction element to, and to not infringement of axle, sealing is reliable, complex structure, and volume is bigger, the cost height, noise is bigger, and certain leakage rate is arranged equally.This structure adopts the sealing configuration of multistage line contact, adopts for the seal element frictional loss to move axially that the adjustable sealing seat increases the service life to compress the method for seal element compensate for wear, to reach, the reliable sealing purpose.
The structure of sealing of conventional filler letter and mechanical seal has a lot, a kind of series connection separable filling sealing device that is used for pump as 200610147895.7,200910241250.3 a kind of solid medium plunger pump stuffing sealing device, stuffing seals such as packing seal of 200910201511.9 band inflation shroud ring of containing; 02131979.0 mechanical seal device, 92104365.1 a kind of mechanical seal device with superheat protecting function, 200610037403.9 self-tightening type mechanical sealing device, 200710114664.0 highly effective mechanically-sealing apparatus, 200510038704.9 mechanical seal device such as the non-contacting method of a kind of realization mechanical seal zero leakage; Also has a kind of submarine rudder shaft seal of 200710012462.5.The problem of one or several existence of the motive sealing that these devices all solve, but have problems for the applicability of underwater pressure-bearing shell.
Summary of the invention
The purpose of this utility model is to provide a kind of dynamic seal structure of screw shaft of underwater pressure-bearing shell.
The technological scheme that its technical problem that solves the utility model adopts is:
Male cone (strobilus masculinus) on the stern tube shaft and outer side surface are to cooperate for the taper motive sealing between the inner conical surface of step-like adjustable sealing seat, the roundlet cylinder of step-like adjustable sealing seat is installed stuffing box friction top and multi-turn stuffing box from inside to outside successively, by constituting sealing surface between stuffing box and underwater pressure-bearing shell endoporus, regulate bolt with adjustable sealing seat between the great circle cylinder end face of step-like adjustable sealing seat and underwater pressure-bearing shell end face and be connected, stuffing box by at the stuffing box friction top between adjustable sealing seat and the underwater pressure-bearing shell by being installed on the stuffing box hold-down bolt adjusting on the step-like adjustable sealing seat and compressing; One end of stern tube shaft connects with motor in the sealed compartment by bearing, and the other end of stern tube shaft connects propeller cavitation or robot device.
Male cone (strobilus masculinus) on the described stern tube shaft or outer side surface are the o-ring groove that has many annulars on any one conical surface of inner conical surface of step-like adjustable sealing seat, are separately installed with seal ring in the o-ring groove and constitute the taper motive sealing and cooperate.
The utility model is compared with background technique, and the useful effect that has is:
1) has the self compensation regulatory function, owing to adopt the conical surface structure, when after seal ring work a period of time owing to wearing and tearing do not reach sealing during pretightening force, by regulating the axial distance of adjustable sealing seat, thereby make and reach the required impacting force of sealing on the sealing surface, can prolong the working life of seal ring thus, make sealing more reliable.
2) the multi-stage sealed technology of a plurality of seal ring line contact sealings of employing, can reduce conventional filler letter sealing contact surface and amass impacting force big, need be bigger,, stuffing box quick abrasion big to axle wearing and tearing, the shortcoming that power loss is bigger prolong working life of sealing configuration, increase reliability.
The utility model can be used for the stern tube shaft motive sealing that the enclosure interior motor drives various underwater installation motions such as airtight pressure-bearing shell external spiral oar, mechanism hand.
Description of drawings
Accompanying drawing is a structural principle schematic representation of the present utility model.
Among the figure: 1. bearing, 2. adjustable sealing seat, 3. stuffing box hold-down bolt, 4. adjustable sealing seat is regulated bolt, 5. underwater pressure-bearing shell, 6. stuffing box friction top, 7. stuffing box, 8. o-ring groove, 9. seal ring, 10. stern tube shaft.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in drawings, male cone (strobilus masculinus) on the stern tube shaft 10 and outer side surface are to cooperate for the taper motive sealing between the inner conical surface of step-like adjustable sealing seat 2, the roundlet cylinder of step-like adjustable sealing seat 2 is installed stuffing box friction top 6 and multi-turn stuffing box 7 from inside to outside successively, by constituting sealing surface between stuffing box 7 and underwater pressure-bearing shell 5 endoporus, regulate bolt 4 with adjustable sealing seat between the great circle cylinder end face of step-like adjustable sealing seat 2 and underwater pressure-bearing shell 5 end faces and be connected, stuffing box 7 is by regulating and compress by the stuffing box hold-down bolt (3) that is installed on the step-like adjustable sealing seat 2 at the stuffing box friction top 6 between adjustable sealing seat 2 and the underwater pressure-bearing shell 5; One end of stern tube shaft 10 connects by the interior motor of bearing 1 and sealed compartment, and the other end of stern tube shaft 10 connects other devices such as propeller cavitation or mechanism hand.
Male cone (strobilus masculinus) on the described stern tube shaft 10 or outer side surface are the o-ring groove that has many annulars on any one conical surface of inner conical surface of step-like adjustable sealing seat 2, are separately installed with seal ring in the o-ring groove and constitute the taper motive sealing and cooperate.The utility model is to have three o-ring grooves 8 on the male cone (strobilus masculinus) on the stern tube shaft 10, is separately installed with seal ring 9 in each o-ring groove 8.Seal ring 9 materials are various composite materials or macromolecular material, and seal ring 9 and the conical surface of adjustable sealing seat 2 both sides contact and compress and reach sealing effect.
The utility model working principle is as follows:
This sealing configuration is installed on underwater pressure-bearing shell 5 and the place that stern tube shaft 10 intersects, and is used to stop the water of underwater pressure-bearing shell 5 outsides to enter in the body of cabin by the stern tube shaft 10 borders leakage of rotating.Adjustable sealing seat 2 seals by stuffing box 7 with underwater pressure-bearing shell 5, and be fixed on underwater pressure-bearing shell 5 walls, when underwater pressure-bearing shell 5 is thin, can adopt add the weldering a thicker steel plate be used to install this sealing configuration, herein because be static seal, so do not have leakage,, can also further compress by tightening stuffing box hold-down bolt 3 just in case there is micro-leakage.The adjustable sealing seat 2 inboard conical surfaces constitute motive sealing face by seal ring and the stern tube shaft that is processed with tapered side equally, because the motion of stern tube shaft 10, after after a while, wearing and tearing can take place and the contact impacting force is reduced in seal ring 9, thereby leak, can regulate bolt 4 this moment by regulating adjustable sealing seat, make seal ring 9 and two conical seal (contact) faces continue the impacting force that contacts that keeps higher, thereby guaranteed the reliability of sealing, when seal ring 9 continues wearing and tearing in the time can't reaching sealing by the adjusting bolt, need to change seal ring.
Specific embodiment:
Be a certain underwater pressure-bearing shell as shown in drawings, stern tube shaft links by the motor in bearing, coupling and the pressure-bearing shell, and the other end of stern tube shaft links by key, coupling and propeller cavitation, install seal arrangement on request, work as motor starting, after the propeller cavitation work, sealing system begins proper functioning.Find that after work a period of time small leakage appears in motive sealing face, do not need this moment to shut down, tighten the 45-90 degree with instrument lightly one by one according to relative adjusting bolt symmetry and get final product, work so successively later on.In the time of can't continuing to tighten when tighting a bolt, illustrate that adjustable sealing seat has been adjusted to limit position, occur again this moment leaking just needing to change seal ring.
Claims (2)
1. dynamic seal structure of screw shaft of underwater pressure-bearing shell, it is characterized in that: the male cone (strobilus masculinus) on the stern tube shaft (10) and outer side surface are to cooperate for the taper motive sealing between the inner conical surface of step-like adjustable sealing seat (2), the roundlet cylinder of step-like adjustable sealing seat (2) is installed stuffing box friction top (6) and multi-turn stuffing box (7) from inside to outside successively, by constituting sealing surface between stuffing box (7) and underwater pressure-bearing shell (5) endoporus, regulating bolt (4) with adjustable sealing seat between the great circle cylinder end face of step-like adjustable sealing seat (2) and underwater pressure-bearing shell (5) end face is connected, stuffing box (7) is regulated and is compressed by the stuffing box hold-down bolt (3) that is installed on the step-like adjustable sealing seat (2) by the stuffing box friction top (6) that is positioned between adjustable sealing seat (2) and the underwater pressure-bearing shell (5); One end of stern tube shaft (10) connects by the interior motor of bearing (1) and sealed compartment, and the other end of stern tube shaft (10) connects propeller cavitation or robot device.
2. a kind of dynamic seal structure of screw shaft of underwater pressure-bearing shell according to claim 1, it is characterized in that: male cone (strobilus masculinus) on the described stern tube shaft (10) or outer side surface are the o-ring groove that has many annulars on any one conical surface of inner conical surface of step-like adjustable sealing seat (2), are separately installed with seal ring in the o-ring groove and constitute the taper motive sealing and cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202858989U CN201787069U (en) | 2010-08-06 | 2010-08-06 | A dynamic sealing structure for the stern shaft of an underwater pressure-bearing shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202858989U CN201787069U (en) | 2010-08-06 | 2010-08-06 | A dynamic sealing structure for the stern shaft of an underwater pressure-bearing shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787069U true CN201787069U (en) | 2011-04-06 |
Family
ID=43819032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202858989U Expired - Lifetime CN201787069U (en) | 2010-08-06 | 2010-08-06 | A dynamic sealing structure for the stern shaft of an underwater pressure-bearing shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787069U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | The dynamic sealing structure of the stern shaft of the underwater pressure-bearing shell |
| CN102777604A (en) * | 2012-07-25 | 2012-11-14 | 无锡平盛科技有限公司 | Waterproof device for water tank wire drawing machine |
| CN102773308A (en) * | 2012-07-24 | 2012-11-14 | 无锡平盛科技有限公司 | Oil leakage preventing device of take-up box of wire drawing machine for water tanks |
| CN102953862A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Sealing method and sealing device of circular hole of engine |
| CN106602335A (en) * | 2016-12-06 | 2017-04-26 | 浙江宇视科技有限公司 | Camera and tail circuit structure |
| CN107165944A (en) * | 2017-06-27 | 2017-09-15 | 太仓望虞机械科技有限公司 | A kind of rolling bearing of adjustable sealing |
| CN112879673A (en) * | 2021-02-05 | 2021-06-01 | 哈尔滨工程大学 | Underwater dry-type cabin wellhead pipeline cabin penetrating sealing structure |
-
2010
- 2010-08-06 CN CN2010202858989U patent/CN201787069U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893093A (en) * | 2010-08-06 | 2010-11-24 | 浙江大学 | The dynamic sealing structure of the stern shaft of the underwater pressure-bearing shell |
| CN101893093B (en) * | 2010-08-06 | 2011-11-09 | 浙江大学 | Dynamic seal structure of screw shaft of underwater pressure-bearing shell |
| CN102953862A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Sealing method and sealing device of circular hole of engine |
| CN102773308A (en) * | 2012-07-24 | 2012-11-14 | 无锡平盛科技有限公司 | Oil leakage preventing device of take-up box of wire drawing machine for water tanks |
| CN102777604A (en) * | 2012-07-25 | 2012-11-14 | 无锡平盛科技有限公司 | Waterproof device for water tank wire drawing machine |
| CN106602335A (en) * | 2016-12-06 | 2017-04-26 | 浙江宇视科技有限公司 | Camera and tail circuit structure |
| CN107165944A (en) * | 2017-06-27 | 2017-09-15 | 太仓望虞机械科技有限公司 | A kind of rolling bearing of adjustable sealing |
| CN112879673A (en) * | 2021-02-05 | 2021-06-01 | 哈尔滨工程大学 | Underwater dry-type cabin wellhead pipeline cabin penetrating sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110406 Effective date of abandoning: 20111109 |