CN107269847A - The imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape - Google Patents

Abstract

The imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape, several along the circumferential direction uniform imitative shell type grooves 4 on the seal face of at least one sealing ring in the rotating ring or stationary ring of mechanical seal, the contour structures of imitative shell type groove 4 are similar to shell profile, and the texture that imitative shell type groove 4 is staggered to form by radial groove 6, circumferential grooves 5, imitative shell profile groove 42 and groove is constituted；Radial groove 6 is interrupted in discontinuous distribution along fluid leakage direction in radiation rib-like distribution, and by continuously distributed circumferential grooves 5, and circumferential grooves 5 are distributed and concentric with sealing ring in concentric circles arc shape；Texture refers to arc turtleback projection 41 radially contour between adjacent two radial groove 6, and the height of arc turtleback projection 41 is less than seal face；Sealing weir 3 is provided between imitative shell type groove, the downstream that imitative shell type groove is radially leaked is provided with the seals dam 2 for playing stop seal effect, the radial width of seals dam is less than 1/2nd of seal face.

Description

The imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape

(1) technical field

The present invention relates to hydrodynamic lubrication technical field of mechanical, and in particular to imitative shell type tank liquid lubricating mechanical sealing Structure, is particularly suitable for use in the axle end sealing device of the rotating machinery rotating shaft of various marine fields.

(2) background technology

Marine environment has the particularity of many with respect to land, so applying the operating mode of the mechanical seal in extra large frock is standby It is more severe.Particularly marine biofouling problem, which is given, applies the mechanical seal in extra large frock is standby to bring many harm, sea Foreign fouling organism can be attached on the friction pair of mechanical seal, can accelerate the corrosion and abrasion of seal face, so as to cause machinery Sealed sealing property declines, and service life shortens, and mechanical seal can be made to fail when serious.For such case, it is necessary to grind Study carefully a kind of mechanically-sealing apparatus for preventing marine fouling organism attachment, destroying end face various forms texture and type groove, make texture end Face mechanical seal is influenceed to be preferably minimized in the process of running by marine fouling organism, thus increase mechanical seal wearability and Corrosion resistance, keeps ensureing the hydrodynamic effect or hydrostatic pressure effect of its end face, it is ensured that what mechanical seal was run can as far as possible By property.

(3) content of the invention

For current marine environment plunge into the commercial sea frock for rotating machinery end surface mechanical sealing easily by marine fouling organism The defect or deficiency of attachment, the invention provides a kind of with ocean pollution resistance, increase dynamic pressure effect, the imitative shellfish for improving wearability Shell mould tank liquid lubricating mechanical sealing structure.

The present invention is to be achieved through the following technical solutions：

The imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape, it is characterised in that：The machinery is close Several along the circumferential direction uniform imitative shell type grooves 4 on the seal face of at least one sealing ring in the rotating ring or stationary ring of envelope, The contour structures of the imitative shell type groove 4 are similar to shell profile, the imitative shell type groove 4 by radial groove 6, circumferential grooves 5, The texture composition that imitative shell profile groove 42 and groove are staggered to form；The radial groove 6 is along fluid leakage direction in radiation rib Shape is distributed, and is interrupted by continuously distributed circumferential grooves 5 in discontinuous distribution, and the circumferential grooves 5 are in concentric circles arc shape point Cloth and concentric with sealing ring；Described texture refers to arc turtleback projection 41 radially contour between adjacent two radial groove 6, The height of the arc turtleback projection 41 is less than seal face；Sealing weir 3 is provided between the imitative shell type groove, it is described imitative The downstream that shell type groove is radially leaked is provided with the seals dam 2 for playing stop seal effect, and the radial width of seals dam is small In 1/2nd of seal face.

Further, the radial groove 6, circumferential grooves 5, arc turtleback projection 41 and the imitative structure of shell profile slot part 42 Into a unit of the imitative shell type groove, the equivalent and described radial groove 6 of the base depth in same unit or week The height of depth and arc turtleback raised 41 to groove 5 distinguishes correspondent equal；The depth of described imitative shell type groove unit Radially leakage direction is in the trend gradually become shallower as.

Further, micro- texture of the surface micrometre-grade of arc turtleback projection 41, described micro- texture is raised or recessed Hole or narrow top plane, pit depth are less than or equal to the depth of the radial groove 6 on projection both sides.

Further, the ratio between area and the end face gross area of shell type groove are imitated and is more than 0.3.

The invention has the advantages that：

1. the micro- texture of circumferential grooves, radial groove and arc turtleback projection and its surface of imitative shell type groove bottom land, micro- Texture can be nick or micro-bulge, architectural feature and shell body external waviness shape architectural feature and the effect on these type groove surfaces Mechanism is quite similar, and it is to make biological substance or algae goods and materials under water environment attached in the generation of fluid dynamic and static pressure type groove surface that it, which is acted on, The probability for thing greatly reduces, and (shell type groove is imitated when the imitative shell type groove density that seal face is distributed reaches certain numerical value 0.3) the ratio between area and end face gross area are more than, and it is attached that the circumferential grooves and radial groove of bottom land can be difficult to marine fouling organism Over the whole end surface, so that mechanical seal end surface has certain ocean pollution resistance, being finally reached makes mechanical seal in sea Frock is standby to be influenceed to be preferably minimized during one's term of military service by marine fouling organism, so as to increase the wearability of mechanical seal and corrosion-resistant Property, keep and ensure the hydrodynamic effect or hydrostatic pressure effect of its end face, it is ensured that the mesh of mechanical seal reliability of operation 's.

2. the micro- the texture such as nick or micro-bulge that are distributed on imitative shell type groove arc turtleback protrusion surface, with increasing Strong end face cavitation effect and then further raising end face hydrodynamic effect, reduce the actual effect of leakage, therefore further drop Fretting wear between low end face, can improve the wearability of mechanical seal.

(4) illustrate

Fig. 1 is the overall structure diagram of the present invention.

Fig. 2 is the three dimensional structure diagram of the imitative shell type groove of the present invention, the curved turtleback of projection of texture therein.

Fig. 3 be Fig. 2 A-A to sectional view, be the schematic diagram of arc turtleback projection, protrusion surface therein is smooth Face, Fig. 3 a are the partial structurtes stereograms at Fig. 3 C, and Fig. 3 b are the views of the partial structurtes at Fig. 3 C.

Fig. 4 be Fig. 2 A-A to sectional view, be the schematic diagram of arc turtleback projection, protrusion surface therein band dimpling Body, Fig. 4 a are the partial structurtes stereograms at Fig. 4 C, and Fig. 4 b are the views of the partial structurtes at Fig. 4 C.

Fig. 5 be Fig. 2 A-A to sectional view, be the schematic diagram of arc turtleback projection, protrusion surface therein has nick, Fig. 5 a are the partial structurtes stereograms at Fig. 5 C, and Fig. 5 b are the views of the partial structurtes at Fig. 5 C.

Fig. 6 be Fig. 2 A-A to sectional view, be the schematic diagram of arc turtleback projection, protrusion surface top surface therein be light Sliding narrow plane, Fig. 6 a are the partial structurtes stereograms at Fig. 6 C, and Fig. 6 b are the views of the partial structurtes at Fig. 6 C.

(5) specific embodiment

Technical scheme is described in detail below in conjunction with the accompanying drawings.In figure：

1- sealing rings；2- seals dams；3- sealing weirs；4- is like shell type groove；The projection of 41- texture；42- imitates shell profile Groove；5- circumferential grooves；6- radial grooves.

Reference picture 1-6, the imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape, it is characterised in that： Along the circumferential direction uniform several are imitated on the seal face of at least one sealing ring in the rotating ring or stationary ring of the mechanical seal Shell type groove 4, the contour structures of the imitative shell type groove 4 are similar to shell profile, the imitative shell type groove 4 by radial groove 6, The texture composition that circumferential grooves 5, imitative shell profile groove 42 and groove are staggered to form；The radial groove 6 leaks direction along fluid Interrupted in radiation rib-like distribution, and by continuously distributed circumferential grooves 5 in discontinuous distribution, the circumferential grooves 5 are in concentric Arc section shape is distributed and concentric with sealing ring；Described texture refers to arc tortoise radially contour between adjacent two radial groove 6 Shape projection 41 is carried on the back, the height of the arc turtleback projection 41 is less than seal face；It is provided between the imitative shell type groove close Weir 3 is sealed, the downstream that the imitative shell type groove is radially leaked is provided with the seals dam 2 for playing stop seal effect, seals dam Radial width be less than seal face 1/2nd.The ratio between area and the end face gross area of imitative shell type groove are more than 0.3.

The radial groove 6, circumferential grooves 5, arc turtleback projection 41 and imitative shell profile slot part 42 constitute institute State a unit of imitative shell type groove, the equivalent and described radial groove 6 of the base depth in same unit or circumferential grooves 5 Depth and arc turtleback projection 41 height difference correspondent equal；The depth of described imitative shell type groove unit is radially let out Leakage direction is in the trend gradually become shallower as.

Micro- texture of the surface micrometre-grade of arc turtleback projection 41, described micro- texture is raised or pit or narrow Plane is pushed up, pit depth is less than or equal to the depth of the radial groove 6 on projection both sides.

The surface of arc turtleback projection 41 be shiny surface (as shown in Figure 3) or with micro-bulge (as shown in Figure 4) or Person has yardstick to be micron-sized pit (as shown in Figure 5) or pushes up plane (as shown in Figure 6) to be narrow, and pit depth is less than or equal to The depth of the radial groove 6 on projection both sides.

The depth of described imitative shell type groove unit can also be the trend that radially leakage direction is in phase step type shoals, its Middle radial groove 6, circumferential grooves 5, arc turtleback projection 41 and imitative shell profile groove 42 are constituted on a step, same step The projecting height of circumferential grooves 5 is no more than the bottom surface of radial groove 6.In addition, same type groove step can be in central concave both sides The micro- U-shaped stuck up or V-arrangement distribution, therefore the profile of half of spoon is presented in the imitative shell type groove unit constituted.

The radial groove of described imitative shell type groove unit can be straight-line groove, camber line groove, helical-type line groove etc..

Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection model of the invention Enclose and be not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes people in the art Member according to present inventive concept it is conceivable that equivalent technologies mean.

Claims (4)

1. the imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape, it is characterised in that：The mechanical seal Rotating ring or stationary ring at least one sealing ring seal face on several along the circumferential direction uniform imitative shell type grooves (4), The contour structures of the imitative shell type groove (4) are similar to shell profile, and the imitative shell type groove (4) is by radial groove (6), circumference The texture composition that groove (5), imitative shell profile groove (42) and groove are staggered to form；The radial groove (6) is along fluid leakage side It is distributed, and is interrupted by continuously distributed circumferential grooves (5) in discontinuous distribution, the circumferential grooves (5) in radiation rib-like It is distributed in concentric circles arc shape and concentric with sealing ring；Radial direction is contour between described texture refers to adjacent two radial groove (6) Arc turtleback projection (41), the height of the arc turtleback projection (41) is less than seal face；The imitative shell type groove Between be provided with sealing weir (3), the downstream that the imitative shell type groove is radially leaked, which is provided with, plays stop seal effect Seals dam (2), the radial width of seals dam is less than 1/2nd of seal face.

2. the imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape as claimed in claim 1, its feature It is：The radial groove (6), circumferential grooves (5), arc turtleback projection (41) and imitative shell profile slot part (42) are constituted One unit of the imitative shell type groove, the equivalent and described radial groove of the base depth in same unit (6) or week Height to the depth and arc turtleback raised (41) of groove (5) distinguishes correspondent equal；Described imitative shell type groove unit It is in the trend gradually become shallower as that depth, which radially leaks direction,.

3. the imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape as claimed in claim 2, its feature It is：Micro- texture of arc turtleback projection (41) surface micrometre-grade, described micro- texture is raised or pit or narrow Plane is pushed up, pit depth is less than or equal to the depth of the radial groove (6) on projection both sides.

4. the imitative shell type tank liquid lubricating mechanical sealing structure of turtleback texture shape as claimed in claim 3, its feature It is：The ratio between area and the end face gross area of imitative shell type groove are more than 0.3.