阅读说明：本技术 调整法兰、艉轴密封装置及船舶 (Adjusting flange, stern shaft sealing device and ship ) 是由 秦耀明 赖海清 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种调整法兰、艉轴密封装置及船舶,所述调整法兰包括：法兰盘本体,以及沿所述法兰盘本体边沿设置的第一连接孔和第二连接孔,至少所述第一连接孔为沉孔；所述法兰本体的两相对端面呈夹角θ设置。本发明的调整法兰用于艉轴密封装置中,并将艉轴密封装置中密封组件的线环密封改进为带环密封的形式,加强了密封圈两侧润滑油的泵汲作用,改善了润滑油脂对密封圈和艉轴的润滑和冷却,散热效果得到加强,从而解决了传统的密封圈两侧润滑油脂相对静止,不利于密封圈和艉轴的润滑和冷却所造成的密封圈发热老化、艉轴表面易磨损,甚至发生润滑油泄漏,污染环境,影响船舶经营的缺陷,提高了艉轴密封装置的使用可靠性及寿命。(The invention discloses an adjusting flange, a stern shaft sealing device and a ship, wherein the adjusting flange comprises: the flange plate comprises a flange plate body, a first connecting hole and a second connecting hole, wherein the first connecting hole and the second connecting hole are arranged along the edge of the flange plate body; the two opposite end surfaces of the flange body form an included angle theta. The adjusting flange is used in the stern shaft sealing device, and the line ring sealing of the sealing assembly in the stern shaft sealing device is improved into a belt ring sealing mode, so that the pumping action of lubricating oil on two sides of the sealing ring is enhanced, the lubrication and cooling of the sealing ring and the stern shaft by lubricating grease are improved, and the heat dissipation effect is enhanced, thereby overcoming the defects that the sealing ring is heated and aged, the surface of the stern shaft is easy to wear, even lubricating oil leakage occurs, the environment is polluted, the ship operation is influenced, and the service reliability and the service life of the stern shaft sealing device are improved.)

1. An adjustment flange, comprising: the flange plate comprises a flange plate body, a first connecting hole and a second connecting hole, wherein the first connecting hole and the second connecting hole are arranged along the edge of the flange plate body; the two opposite end surfaces of the flange body form an included angle theta.

2. The trim flange of claim 1, wherein the included angle θ is in the range of 0.5 ° -1 °.

3. The adjustment flange according to claim 1, wherein the first connection holes and the second connection holes are provided in plural numbers, and the first connection holes and the second connection holes are alternately arranged at intervals in a circumferential direction of the flange body.

4. A stern shaft seal arrangement, comprising: a stern shaft, a sealing assembly sleeved on the stern shaft, a stern shaft tube used for fixing the sealing assembly, and the adjusting flange according to any one of claims 1 to 3; the adjusting flange is arranged between the sealing assembly and the stern shaft tube and is connected with the sealing assembly and the stern shaft tube; the adjusting flange is connected with the stern shaft tube through the first connecting hole bolt; the adjusting flange is connected with the sealing seat through the second connecting hole through a bolt.

5. The stern shaft seal arrangement as claimed in claim 4, wherein the seal assembly comprises a set of seal rings and a seal housing cooperating with the set of seal rings to form a receiving cavity.

6. The stern shaft seal arrangement as claimed in claim 5, wherein the set of seals comprises at least three seals, the receiving cavity comprising an oil cavity for receiving lubricating oil; the oil chamber is arranged on two opposite sides of at least one sealing ring.

7. The stern shaft seal as claimed in claim 6 wherein the seal ring is a lip seal ring.

8. The stern shaft seal arrangement as claimed in claim 6, wherein the band seal width of the seal ring on the stern shaft is Dtan θ, and the range of the band seal width b is 2mm-3 mm; wherein D is the diameter of the stern shaft.

9. The stern shaft seal device as claimed in any one of claims 6 to 8, wherein the distance from the center line of the seal ring set in the axial direction of the stern shaft to the end surface of the seal base on the side close to the adjustment flange is L, and the eccentricity between the two opposite end surfaces of the flange body is S-Ltan θ.

10. A ship comprising a stern shaft seal as claimed in any one of claims 4 to 9.

Technical Field

The invention relates to the field of ship industry, in particular to an adjusting flange, a stern shaft sealing device and a ship.

Background

In the ship industry, in order to prevent seawater and lake water from permeating into a ship body along a stern shaft, the stern shaft must be strictly sealed to ensure the safety of a ship. Meanwhile, the method plays an important role in preventing the ship from polluting the water area and protecting the environment. With the increasingly strict requirements on marine pollution prevention and the continuous occurrence of sealing device damage accidents caused by large-scale and high-speed ships, deepwater operation and the like, the shipbuilding boundaries and shipping departments at home and abroad put forward higher requirements on the reliability, maintainability and the like of the sealing device. The conventional sealing device for the stern shaft generally seals through a plurality of sealing rings at the connecting positions, and a plurality of extrusion mechanisms are required to be matched, installed and connected when the sealing rings are matched. However, when the conventional stern shaft sealing device operates, the sealing ring is easy to heat and age, and the surface of the stern shaft is easy to wear, so that the reliability of the sealing device and the operation safety of a ship are reduced, and even lubricating oil leakage occurs to pollute the environment. And because it is difficult to maintain to install under the waterline, in case the rear stern shaft sealing device breaks down or damages, the stern shaft lubricating oil leaks and causes the pollution of waters environment, the boats and ships must dock and repair or change sealing device, and the economic loss is caused to the operation of boats and ships because of the shut down, shut down production.

Disclosure of Invention

Based on the structure, the invention aims to overcome the defects that a sealing ring is easy to heat and age and the surface of a stern shaft is easy to wear when the stern shaft of the stern shaft sealing device in the prior art runs, so that the reliability of the sealing device and the operation safety of a ship are reduced, even lubricating oil leakage occurs, the environment is polluted, and the ship operation is influenced, and provides the adjusting flange, the stern shaft sealing device and the ship.

The technical scheme is as follows:

an adjustment flange, comprising: the flange plate comprises a flange plate body, a first connecting hole and a second connecting hole, wherein the first connecting hole and the second connecting hole are arranged along the edge of the flange plate body; the two opposite end surfaces of the flange body form an included angle theta.

The adjusting flange of the technical scheme is used in the stern shaft sealing device, the wire ring sealing of the sealing assembly in the stern shaft sealing device is improved to be in a belt ring sealing mode, the pumping effect of lubricating oil on two sides of the sealing ring is enhanced, the lubrication and cooling of the sealing ring and the stern shaft by lubricating grease are improved, the heat dissipation effect is enhanced, the defects that the lubricating grease on two sides of the traditional sealing ring is static relatively, the sealing ring is not beneficial to the lubrication and cooling of the sealing ring and the stern shaft, the surface of the stern shaft is easy to wear, lubricating oil leakage even occurs, the environment is polluted, ship operation is influenced are overcome, and the use reliability and the service life of the stern shaft sealing device are improved. Specifically, the adjusting flange of this technical scheme is located between stern central siphon and the seal assembly, is the contained angle theta setting through the double-phase contralateral terminal surface of ring flange body, thereby when ring flange body one side and stern central siphon butt joint, because the terminal surface of stern central siphon is the face of perpendicular to stern central siphon axis, so the ring flange body is close to stern central siphon one side, also perpendicular to stern central siphon axis when the installation, the opposite side then makes its and stern central siphon axis out of plumb but also is the contained angle slope owing to the setting of contained angle theta, so can with locate the sealing washer deflection of inclined plane place side makes the contained angle of sealing washer and stern central siphon axis from perpendicular demonstrating into and be the declination of contained angle theta with the perpendicular line, so make the sealed form of sealing washer become the form of belt loop seal by original wire loop seal. The first connecting hole and the second connecting hole are respectively used for being connected with a stern shaft tube and a sealing assembly, and because two end faces of the flange plate body of the embodiment are required to be tightly attached with the stern shaft tube and the sealing assembly respectively, in order to avoid the influence on the installation of the sealing assembly caused by the exposure of a nut during bolt connection, at least the first connecting hole is a counter bore; when the flange plate body is connected with the stern shaft tube, the nut is positioned in the counter bore, and the close fit of the other side of the flange plate body and the sealing assembly is not influenced.

In one embodiment, the included angle θ is in the range of 0.5 ° to 1 °. The pre-tightening force of the sealing ring and the pumping action of lubricating grease on the two sides of the sealing ring are ensured.

In one embodiment, the number of the first connecting holes and the number of the second connecting holes are both multiple, and the first connecting holes and the second connecting holes are alternately arranged at intervals in the circumferential direction of the flange body. The number and the positions of the first connecting holes and the second connecting holes can be specifically configured according to the sealing assembly, and the connecting effect of the flange plate body, the stern shaft tube and the sealing seat is guaranteed.

This technical scheme still provides a stern shaft sealing device, includes: the stern shaft is sleeved with a sealing assembly on the stern shaft, is used for fixing a stern shaft tube of the sealing assembly and is provided with the adjusting flange; the adjusting flange is arranged between the sealing assembly and the stern shaft tube and is connected with the sealing assembly and the stern shaft tube; the adjusting flange is connected with the stern shaft tube through the first connecting hole bolt; the adjusting flange is connected with the sealing seat through the second connecting hole through a bolt.

This technical scheme improves seal assembly's wire loop seal in the stern axle sealing device for the sealed form of band ring, has improved the lubrication and the cooling of lubricating grease to seal assembly and stern axle, and the radiating effect obtains strengthening to it is static relatively to have solved traditional seal assembly interior lubricating grease, and the sealing washer that is unfavorable for seal assembly and stern axle lubrication and cooling to cause is heated ageing, the easy wearing and tearing of stern axle surface, lubricating oil leakage takes place even, the polluted environment, influence the defect of boats and ships operation, the reliability of use and the life-span of stern axle sealing device have been improved. The first connecting hole and the second connecting hole are respectively used for being connected with a stern shaft tube and a sealing assembly, and because two end faces of the flange plate body of the embodiment are required to be tightly attached with the stern shaft tube and the sealing assembly respectively, in order to avoid the effect that the attaching effect is influenced by the fact that a nut is exposed when a bolt is connected, at least the first connecting hole is a counter bore; when the flange plate body is connected with the stern shaft tube, the nut is positioned in the counter bore, and the close fit of the other side of the flange plate body and the sealing assembly is not influenced.

In one embodiment, the seal assembly includes a seal ring set and a seal seat cooperating with the seal ring set to form a receiving cavity. The accommodating cavity is used for accommodating air or seawater or lubricating grease.

In one embodiment, the sealing ring set comprises at least three sealing rings, and the accommodating cavity comprises an oil cavity for accommodating lubricating oil; the oil chamber is arranged on two opposite sides of at least one sealing ring. Therefore, when the stern shaft rotates, the lubricating oil on the left side and the right side of the sealing ring has a pumping function, and the lubricating and cooling effects are improved.

In one embodiment, the seal ring is a lip seal ring. Self-sealing effect is good, long service life.

In one embodiment, the sealing ring is mounted on the screw shaft to form a band sealing width b ═ Dtan θ, and the band sealing width b ranges from 2mm to 3 mm; wherein D is the diameter of the stern shaft. Since the pumping effect is affected by the too wide and too narrow band sealing width b, the range of the band sealing width b in this embodiment is 2mm-3 mm.

In one embodiment, a distance between a center line of the seal ring set in the axial direction of the stern shaft and an end surface of the seal seat on the side close to the adjusting flange is L, and an eccentricity between two opposite end surfaces of the flange body is S ═ Ltan θ. In order to reduce the pretightening force deviation of the deflection angle theta on the circumference of the sealing ring, the first connecting hole, the second connecting hole and the axis of the two end faces of the flange plate body have an eccentricity S.

This technical scheme still provides a boats and ships, includes as above-mentioned any one the stern shaft sealing device.

The ship of the technical scheme improves the wire ring seal of the sealing assembly in the stern shaft sealing device into a belt ring seal mode, improves the lubrication and cooling of the sealing assembly and the stern shaft by lubricating grease, and strengthens the heat dissipation effect, thereby solving the defects that the lubricating grease in the traditional sealing assembly is relatively static, the sealing ring is not favorable for the lubrication and cooling of the sealing assembly and the stern shaft to cause heating and aging, the surface of the stern shaft is easy to wear, even lubricating oil leakage occurs, the environment is polluted, the ship operation is influenced, and the service reliability and the service life of the stern shaft sealing device are improved.

Drawings

Fig. 1 is a schematic structural diagram of an adjusting flange according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged view of B in FIG. 2;

fig. 4 is a schematic structural view of a stern shaft sealing device according to an embodiment of the present invention;

fig. 5 is a schematic view of the sealing ring in fig. 4 in a ring sealing state.

Description of reference numerals:

10. the flange plate body; 11. a first connection hole; 12. a second connection hole; 20. a stern shaft; 30. a seal assembly; 31. a seal ring set; 311. a seal ring; 32. a sealing seat; 33. an accommodating chamber; 331. an oil chamber; 40. a stern shaft tube.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

Based on the structure, the invention aims to overcome the defects that a sealing ring is easy to heat and age and the surface of a stern shaft is easy to wear when the stern shaft of the stern shaft sealing device in the prior art runs, so that the reliability of the sealing device and the operation safety of a ship are reduced, even lubricating oil leakage occurs, the environment is polluted, and the ship operation is influenced, and provides the adjusting flange, the stern shaft sealing device and the ship.

The technical scheme is as follows:

an adjustment flange as shown in fig. 1-2, comprising: the flange plate comprises a flange plate body 10, a first connecting hole 11 and a second connecting hole 12, wherein the first connecting hole 11 and the second connecting hole 12 are arranged along the edge of the flange plate body 10; the two opposite end surfaces of the flange body form an included angle theta.

The adjusting flange of the embodiment is used in the stern shaft sealing device, the structure of the original stern shaft sealing device is not required to be changed, the adjusting flange can be directly additionally installed, the wire ring sealing of the sealing assembly in the stern shaft sealing device is improved to be a belt ring sealing mode, the pumping action of lubricating oil on two sides of the sealing ring is enhanced, the lubricating and cooling of the lubricating grease on the sealing ring and the stern shaft are improved, the radiating effect is enhanced, the problem that the lubricating grease on two sides of the traditional sealing ring is static relatively is solved, the sealing ring is not beneficial to lubricating and cooling of the sealing ring and the stern shaft to cause heating aging, the surface of the stern shaft is easy to wear, even lubricating oil leakage occurs, the environment is polluted, the defect of ship operation is influenced, and the service reliability and the service life of the stern. Specifically, the adjusting flange of the present embodiment is disposed between the stern shaft tube and the sealing assembly, and the two opposite ends of the flange plate body 10 are disposed to form an included angle θ, so that when one side of the flange plate body 10 is butted with the stern shaft tube, since the end surface of the stern shaft tube is perpendicular to the axis of the stern shaft, the flange plate body 10 is close to one side of the stern shaft tube, and is also perpendicular to the axis of the stern shaft when being installed, and the other side of the flange plate body is perpendicular to the axis of the stern shaft due to the included angle θ, and is also inclined, so that the sealing ring disposed on the side where the inclined surface is located can be deflected, and the included angle between the sealing ring and the axis of the stern shaft is changed from perpendicular to a declination angle which is the included angle θ with the perpendicular line, so. In addition, the first connection hole 11 and the second connection hole 12 are respectively used for being connected with a stern shaft tube and a sealing assembly, and because the end surfaces on two sides of the flange plate body 10 of the embodiment are required to be tightly attached with the stern shaft tube and the sealing assembly respectively, in order to avoid the influence of the close attachment effect caused by the exposure of nuts during bolt connection, at least the first connection hole 11 of the embodiment is a counter bore; that is, when the flange body 10 is connected with the stern shaft tube, the nut is positioned in the counter bore, and the close fit between the other side of the flange body 10 and the sealing component is not affected.

In other embodiments, it is also possible to arrange that the first connection hole 11 is connected to the seal assembly and the second connection hole 12 is connected to the stern tube. Also, in other embodiments, the first connection hole 11 and the second connection hole 12 may be both countersunk.

In order to ensure the pre-tightening force of the sealing ring and the pumping action of the lubricating grease on the two sides of the sealing ring, the included angle theta is in the range of 0.5-1 degrees.

In this embodiment, the number of the first connecting holes 11 and the number of the second connecting holes 12 are both multiple, the first connecting holes 11 and the second connecting holes 12 are alternately arranged in the circumferential direction of the flange body 10 at intervals, the number and the positions of the first connecting holes 11 and the second connecting holes 12 can be specifically configured according to the sealing assembly, and the connecting effect of the flange body 10 and the stern tube and the sealing seat is ensured.

As shown in fig. 4 to 5, the present embodiment also provides a stern shaft sealing device, including: the stern shaft 20, the sealing assembly 30 sleeved on the stern shaft 20, the stern shaft tube 40 used for fixing the sealing assembly 30, and the adjusting flange as described in any one of the above items; the adjusting flange is arranged between the sealing assembly 30 and the stern shaft tube 40 and is connected with both the sealing assembly 30 and the stern shaft tube 40; the adjusting flange is in bolted connection with the stern shaft tube 40 through the first connecting hole 11; the adjusting flange is bolted to the sealing seat 32 through the second connecting hole 12.

In the embodiment, the wire ring seal of the sealing assembly 30 in the stern shaft sealing device is improved to be in a belt ring seal mode, the lubrication and cooling of the sealing assembly 30 and the stern shaft 20 by lubricating grease are improved, and the heat dissipation effect is enhanced, so that the defects that the sealing ring 311 is heated and aged, the surface of the stern shaft 20 is easy to wear, even lubricating oil leaks, the environment is polluted and the ship operation is influenced due to the fact that the lubricating grease in the traditional sealing assembly 30 is relatively static and is not beneficial to the lubrication and cooling of the sealing assembly 30 and the stern shaft 20 are overcome, and the use reliability and the service life of the stern shaft sealing device are improved. In addition, the first connection hole 11 and the second connection hole 12 are respectively used for being connected with the stern shaft tube 40 and the sealing assembly 30, and because the two end faces of the flange plate body 10 of the embodiment are required to be tightly attached with the stern shaft tube 40 and the sealing assembly 30 respectively, in order to avoid the effect of attaching being affected by the exposure of nuts during bolt connection, at least the first connection hole 11 of the embodiment is a counter bore; that is, when the flange body 10 is connected to the stern tube 40, the nut is located in the counter bore, and the close fit between the other side of the flange body 10 and the sealing assembly 30 is not affected.

The sealing assembly 30 of the present embodiment includes a sealing ring set 31 and a sealing seat 32 cooperating with the sealing ring set 31 to form an accommodating cavity 33, and the sealing seat 32 is connected to the adjusting flange. The receiving chamber 33 is used for receiving air or seawater or grease.

This embodiment is connected in order to guarantee the location of adjustment flange and stern central siphon 40 and seal receptacle 32, the 10 both sides of ring flange body are equipped with first spacing step, seal receptacle 21 and all be equipped with on the stern central siphon 40 with the spacing step of first spacing step complex second through the cooperation of first spacing step and the spacing step of second, accomplishes the preliminary location of adjustment flange and stern central siphon 40, seal receptacle 32, and it is spacing that back rethread bolted connection.

The sealing ring set 31 of the present embodiment includes at least three sealing rings 311, and the accommodating chamber 33 includes an oil chamber 331 for accommodating lubricating oil; the oil chamber 331 is disposed on two opposite sides of at least one of the sealing rings 311. Therefore, when the stern shaft 20 rotates, the lubricating oil on the left side and the right side of the sealing ring 311 has a pumping function, and the lubricating and cooling effects are improved.

This embodiment sealing washer 311 is lip seal, and self sealss is effectual, long service life.

After the adjusting flange is installed, since each of the sealing rings 311 of the present embodiment of the inclination is shifted by the adjusting flange to deflect not perpendicular to the axis of the stern shaft 20 and form an offset angle θ with the vertical line, the sealing width of the ring belt formed after the sealing ring 311 is installed on the stern shaft 20 is "Dtan θ", where D is the diameter of the stern shaft 20. Since the pumping effect is affected by the too wide and too narrow band sealing width b, the range of the band sealing width b in this embodiment is 2mm-3 mm.

As shown in fig. 3, in order to reduce the bias angle θ to the bias force deviation of the sealing ring 311 on the circumference, the first connecting hole 11, the second connecting hole 12 and the positioning center of the shaft center on the two side end surfaces of the flange body 10 have an eccentricity S. Specifically, the distance from the center line of the seal ring set 31 in the axial direction of the stern shaft 20 to the end surface of the stern shaft tube 40 is L, and the eccentricity of the positioning centers of the two opposite end surfaces of the flange body 10 is S ═ Ltan θ.

This embodiment also provides a ship comprising a stern shaft sealing arrangement as defined in any of the above.

The ship of the embodiment improves the wire ring sealing of the sealing assembly 30 in the stern shaft sealing device into a belt ring sealing mode, improves the lubrication and cooling of the sealing assembly 30 and the stern shaft 20 by lubricating grease, and strengthens the heat dissipation effect, thereby solving the defects that the traditional sealing assembly 30 has relatively static lubricating grease, is not beneficial to the heating and aging of the sealing ring 311 caused by the lubrication and cooling of the sealing assembly 30 and the stern shaft 20, the surface of the stern shaft 20 is easy to wear, even has lubricating oil leakage, pollutes the environment and influences the ship operation, and improving the use reliability and the service life of the stern shaft sealing device.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.