CN1041228C

CN1041228C - Fully closed seal device for swing piston IC engine

Info

Publication number: CN1041228C
Application number: CN94105413A
Authority: CN
Inventors: 谈诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-05-14
Filing date: 1994-05-14
Publication date: 1998-12-16
Anticipated expiration: 2014-05-14
Also published as: CN1109549A

Abstract

The present invention relates to a fully closed seal device of a swing piston internal combustion engine, which is a supplementary invention after the swing piston internal combustion engine of the inventor of the present invention gets international prize. The fully closed seal device realizes fully closed seal between the moving parts and the fixed parts of the engine, ensures free expansion of all the sealed parts under the condition of heating, and also ensures reliable seal. The fully closed seal device lays a solid foundation for the development and the industrialization of the swing piston internal combustion engine.

Description

Fully closed seal device for swing piston IC engine

Fully closed seal device for swing piston IC engine belongs to F01C9/00 according to International Patent Classification (IPC), F02B53/00, F02B53/04.

Fully closed seal device for swing piston IC engine be the inventor the patent strokes oscillating piston internal combustion engine of oneself winning international prize (Chinese invention patent number: 85100486.5,87107720.5, U.S. Patent number a: supplementary invention US4884532).

The patent of invention that prior art is declared in the patent law of china enforcement first day (on April 1st, 1985) for the inventor, back division is the binomial patent: (1) denomination of invention: two-stroke strokes oscillating piston internal combustion engine, the patent No.: 85100486.5, Patent Office of the People's Republic of China's Grant Patent Right for Invention on February 16th, 1989.(2) denomination of invention: strokes oscillating piston internal combustion engine-four cylinder engine, the patent No.: 87107720.5, Patent Office of the People's Republic of China's Grant Patent Right for Invention on December 13rd, 1989.The strokes oscillating piston internal combustion engine of inventor's invention was declared U. S. Patent on April 1st, 1986, authorized U. S. Patent power on December 5th, 1989, patent No. US4884532.Second show of inventions of inventive principle in October, 1986 participation China obtains the silver medal prize, participate in the 15 the world inventions exhibition in Geneva in April, 1987 and obtain the bronze medal prize, in November, 1988 participates in first international monopoly and the new technology exhibition obtains excellent prize, and the 14 the world inventions exhibition of answering in April, 1991 invite participation of world invention association to hold in the USA New York obtains the silver medal prize.

The described engine structure of foregoing invention patent is simple, in light weight, size is little, single-machine capacity big (compare identical external dimension and rotating speed with existing heavy duty, power can improve 5 to 10 times), manufacture cost also can reduce at double, the new engine runnability is good, the work balance is good, little, the good economy performance of operational noise, the mechanical efficiency height, component wear is little, long service life.The foregoing invention patent is given the revolution that is showing dynamic power machine, has the social economic benefit that are difficult to estimate.But do not accomplish as yet in the above-mentioned patent to seal fully, movement parts has the slit, many places to fail to seal up fully (there is the pinprick size in slit, every place, is about 0.03 to 0.06 square millimeter).The inventor tests overswing piston inner combustion engine model machine, type is that single oscillation piston twin-tub four-stroke gasoline engine, every cylinder working volume are 1 liter, 2 liters of total measurement (volume)s, design parameter is 30 kilowatts, and 4000 rev/mins of crankshaft revolutions have slit, six places to fail to seal up fully, gas leakage has caused the reduction of engine compression ratio and power, the engine test parameter is 18.4 kilowatts, 2600 rev/mins of crankshaft revolutions, and the accumulative total driving time is 1200 hours.The inventor is engaged in the research of new engine for many years, fails to accomplish the sealing fully between movement parts and the fixed block in first three 15 year all the time, has creationary breakthrough, spy will break through part supplementary declaration patent in 1994.

Its goal of the invention is for oscillating piston engine provides a kind of fully closed seal device that gap between piston and cylinder is sealed up fully, to overcome defective back and forth existing and that oscillating engine can't seal fully.

Its technological scheme is to carry out totally-enclosed handing-over between Sealing and cylinder body, oscillating-piston and obturator, both guaranteed the free thermal expansion under various working staties of cylinder body, oscillating-piston, obturator, guarantee the totally-enclosed handing-over of seam crossing again, inventive features is divided into three parts;

1, radial seal part, end face seal part and totally-enclosed handing-over thereof in the part 3 that overhangs of oscillating-piston 2.The oscillating-piston radial seal that overhangs in the part 3 is allocated into coil spring 6 and is formed by radial seal body 4, the radial seal body two ends boring 6A that radially slots among the sliding end face seal bar 5 of joining of 5A, leaf spring 7, the oscillating-piston radial groove 4A, and above-mentioned component parts can 1 to 5 overlaps.Radial seal body 4, end face seal bar 5 are close to central housing inwall and left and right sides inboard wall of cylinder block respectively under

spring

6,7 effects.Radial seal body 4 is the plane for long strip obturator, bottom surface, end face, bi-side, and end face is and the convex arc surface of central housing inner chamber with radius.Radial seal body 4 two axial ends are radially equidistant, and to have 1 to 3 groove 5A, this groove be groove, the radially same length of groove 5A and end face seal bar 5.Axial seal body 8 is drilled with hole 9A, allocates coil spring 9 in the 9A of hole for the part of convex shoulder is arranged at the bottom in the convex shoulder of bottom, axial seal body 8 size vertically is greater than end face seal bar 5 size vertically.Oscillating-piston part 3 both ends of the surface that overhang have radial groove 8A, in this radial groove 8A, bore axial bore 10A, in the 10A of hole, allocate coil spring 10 into, axial seal body 8 is close to left and right sides inboard wall of cylinder block under the effect of coil spring 10, axial seal body 8 is under the effect of coil spring 9, with radial seal body 4, end face seal bar 5 is close to, and forms totally-enclosed handing-over.The tricks of axial seal body 8 is same as the tricks of radial seal body 4;

2, in the cylinder body divider 13 radial seal by radial seal body 14,15A radially slots at radial seal body 14 two ends, sliding end face seal bar 15 and the leaf spring 17 allocated into, radial seal body 14 drilling radial hole 16A allocate coil spring 16 into, radial seal body 14 is the long strip part, upper bottom surface, both ends of the surface, bi-side are the plane, and bottom surface is and the recessed garden cambered surface of the little garden of oscillating-piston cambered surface 18 with radius that above-mentioned component parts can 1 to 5 cover in the cylinder body spacer body 13.Cylinder body divider 13 two ends are milled with the sliding axial seal body 19 of allocating into of radial groove 19A, the axial dimension of axial seal body 19 is greater than the axial dimension of end face seal bar 15, groove 19A interior edge face axial drilling 20A, allocate coil spring 20 into, axial seal body 19 drilling radial hole 21A, allocate coil spring 21 into, radial seal body 14 under the spring force effect, end face seal bar 15 forms totally-enclosed handing-over between axial seal body 19 and left and right sides cylinder body both ends of the surface inwall, the little garden of oscillating-piston cambered surface 18 and the inverted T shape sealing block 23.The tricks of axial seal body 19 is same as the tricks of this part of radial seal 14, is 1 to 5 cover.

3, the Sealing of the little garden of oscillating-piston cylinder 18 2 ends, a plurality of inverted T shape sealing blocks 23 of outer cause are arranged in order sliding fitting in the groove 24 at cylinder 18 outer rim two ends, the little garden of oscillating-piston.The B of inverted T shape sealing block 23, C, the garden cambered surface that the D face is and the oscillating-piston center line is concentric, the little garden of B face and oscillating-piston cambered surface 18 same radiuses, E, F, G, H face and the radial plane by the oscillating-piston center line overlap, and I, J, K face and oscillating-piston center line are perpendicular.Join inverted T shape sealing block 23 in conduit 24 outer rim cunnings, the inner edge cunning is joined seal ring 25, L, M in the seal ring 25, the garden cambered surface that the N face is and the oscillating-piston center line is concentric, the L face has identical radius with the C face, M face and D face have same radius and fit, and P, Q face are fitted with the axial seal body 8 on both sides respectively, and R, S, T face and oscillating-piston center line are perpendicular, and R and I are at grade, and S and K fit.Seal ring 25 back installation plate springs 26 in the conduit 24, leaf spring 26 are seal ring 25, and inverted T shape sealing block 23, and fits on the left and right cylinder body inner side surface to ejection to two end axles.Seal ring 25 is along circumferentially being divided into two to three, little gap is left in the jointing place, have conduit 27A in the seal ring 25, the sliding long strip tablet 27 of joining among the conduit 27A, seal ring 25 is identical with the axial length of tablet 27,28A holes in the seal ring 25, allocate coil spring 28 among the 28A of hole into, close 23 of several inverted T shape, 2 to 3 seal rings 25, leaf spring 26, tablet 27, radial seal body 14 in sealing chain that coil spring 28 constitutes and the cylinder body divider 13, end face seal bar 15, the oscillating-piston axially seal body 8 that overhangs in the part 3, and left and right sides inner surface of cylinder block constitutes totally-enclosed handing-over.

Above-mentioned part 5 and part 8 also can be processed into same part.A plurality of parts 23 and part 25 also can be processed into same part.Coil spring also can change leaf spring in the above-mentioned part.

Radial seal 4 epirelief garden cambered surfaces can be opened 1 to 5 road groove 11 vertically in oscillating-piston overhangs part 3, constitute the labyrinth labyrinth seal.That face that axial seal body 8 and left and right sides cylinder body are fitted in oscillating-piston overhangs part 3 radially can be opened 1 to 5 road groove 12 equally, constitutes the labyrinth labyrinth seal.Footpath seal body 14 can be opened 1 to 5 road groove 22 vertically on its recessed garden cambered surface in cylinder body divider 13, constitutes the labyrinth labyrinth seal.

Invention is compared the beneficial effect that had in Reciprocating engine and all kinds of extraordinary motor in the past with background technique, all fail to accomplish totally enclosed sealing between movement parts and the fixed block.The every cylinder of reciprocating internal combustion engine has slit, a place to fail to accomplish totally-enclosed (thereby adopting multiple-sealed ring to compensate).There is slit, 18 place to fail to seal fully in triangular-piston rotor machine-Freakes wankel (Felix Wankel) rotary piston type internal combustion engine list piston three cylinders.There are 10 places or slit, 14 place to fail to seal fully respectively in swing piston engine single oscillation piston twin-tub or four cylinders before the present invention.After the present invention existing oscillating-piston twin-tub or four cylinder engine everywhere sealing off gap all structurally accomplish to seal fully.Laid reliable basis for the development of this new architecture for this reason.Invention has guaranteed the free expansion of all obturators under the various operating mode heating conditions of motor, has guaranteed reliable totally-enclosed sealing again.

The explanation of accompanying drawing drawing:

Fig. 1. oscillating-piston and cylinder body seal operation figure.Overhang part [3], radial seal body [4], end face seal bar [5], axial seal body [8], coil spring [9], [10], cylinder body divider [13], radial seal body [14], end face seal bar [15], the little garden of oscillating-piston cambered surface [18], axial seal body [19], coil spring [21], inverted T-shaped sealing block [23] of cylinder body [1], oscillating-piston [2], oscillating-piston wherein.

Fig. 2 A, Fig. 2 B. are the analyse and observe circle of figure one at EE and FF place.Fig. 2 A is the EE sectional view.Fig. 2 B is the FF sectional view.Wherein [11], [12], [22] are for strengthening the fluting of sealing.Coil spring [6], [16], [20].Leaf spring [7], [17].L shaped seal ring [25].

Fig. 3. remove obturator oscillating-piston stereogram.Oscillating-piston radial groove [4A], oscillating-piston radial groove centre circle spring eye [6A], oscillating-piston radial groove [8A] on the part both ends of the surface, the oscillating-piston axially groove [24] of spring eye [10A], the different shape of the little garden of oscillating-piston cylinder two ends outer rim institute's katal that overhangs in the part both ends of the surface radial groove that overhangs wherein.

Fig. 4. remove obturator strokes oscillating piston internal combustion engine cylinder body, oscillating-piston partial cross-sectional view.Axial coil spring hole [20A] in the groove [19A] radially opened of cylinder body divider two ends, the cylinder body divider both ends of the surface radial groove wherein.

Fig. 5. the stereogram behind the cylinder body divider cracking-off obturator.Cylinder body divider radially slot [14A] wherein.

Fig. 6. independent obturator structural perspective in the cylinder body divider.Wherein radially radially coil spring hole [21A] in coil spring hole [16A], the cylinder body divider axial seal body in cylinder body divider end face seal bar groove [15A], the cylinder body divider radial seal body.

Fig. 7. the oscillating-piston independent obturator structural perspective in the part that overhangs.Radial spring hole [9A] in the oscillating-piston little convex shoulder in part axial seal body bottom that overhangs that radially slot [5A] in part radial seal body two ends, oscillating-piston overhangs wherein.

Fig. 8. cylinder two ends, the little garden of oscillating-piston outer rim is pulled down the structural perspective of obturator.Wherein leaf spring [26], long strip seal tablet [27], coil spring [28], coil spring hole [28A], and the label of inverted T-shaped sealing block [23] and each face of L shaped seal ring [25] and structure are as described above.

Realize the best way of the present invention: the present invention at first is used for the van container cargo ship of large transport ship, 5000TEU level, 260,000 tons of marine main engines to 30 ton Ultra Large Crude Carrier (ULCC).This main frame is the multi-cylinder two-stroke strokes oscillating piston internal combustion engine of a plurality of oscillating-piston series connection, with liquefied petroleum gas (LPG) (LPG) is fuel, the new engine structure is seen accompanying drawing 5 in the Chinese patent 85100486.5, accompanying drawing 6, accompanying drawing 1, accompanying drawing 2 among the U.S. Patent number US4884532.Above invention is applied to the reliability that large-scale superhigh power engine of boat and ship can guarantee the super-large engine inner sealing fully.The corresponding also increasing of size for the super-large engine obturator makes the anufacturability of obturator better, and it is easier to assemble, thereby makes invention have more practicability.

The inventor has been applied to the present invention on the small-sized two cylinder two-stroke oscillating-piston testing machines, and its sealing of evidence is effective.

Claims

1, a kind of fully closed seal device for swing piston IC engine, comprise seal ring, Stamping Steel Ribbon, diaphragm seal, be used to join peculiar part, spring, the above general designation Sealing of each obturator, the invention is characterized in and carry out totally-enclosed handing-over between Sealing and cylinder body, oscillating-piston and the obturator, both guaranteed the free thermal expansion under various working staties of cylinder body, oscillating-piston, obturator, guarantee the totally-enclosed handing-over of seam crossing again, inventive features is divided into three parts;

(1), radial seal part in the part that overhangs [3] of oscillating-piston [2], the end face seal part, and totally-enclosed handing-over, oscillating-piston overhangs the middle radial seal of part [3] by this part of radial seal [4], this part of radial seal two ends [5A] sliding end face seal bar [5] of joining of radially slotting, leaf spring [7], the middle boring of oscillating-piston radial groove [4A] [6A] is allocated coil spring [6] into and is formed, above-mentioned component parts can 1 to 5 cover, radial seal body [4], end face seal bar [5] is in spring [6], [7] central housing inwall and left and right sides inboard wall of cylinder block are close in effect down respectively, radial seal body [4] is the long strip Sealing, the bottom surface, end face, bi-side are the plane, end face is and the convex arc surface of central housing inner chamber with radius, radially equidistant 1 to 3 groove [5A] that has of radial seal body [4] two axial ends, this groove is a groove, groove [5A] and the radially same length of end face seal bar [5], axial seal body [8] has the part of convex shoulder for the bottom, be drilled with hole [9A] in the convex shoulder of bottom, in hole [9A], allocate coil spring [9] into, this part of axial seal [8] size vertically is greater than end face seal bar [5] size vertically, oscillating-piston part [3] both ends of the surface that overhang have radial groove [8A], in this radial groove [8A], bore axial bore [10A], in hole [10A], allocate spring [10] into, axial seal body [8] is close to left and right sides inboard wall of cylinder block under the effect of coil spring [10], axial seal body [8] is under the effect of coil spring [9], with radial seal body [4], end face seal bar [5] is close to, form totally-enclosed handing-over, the tricks of this part of axial seal [8] is same as the tricks of radial seal body [4];

(2), radial seal is by radial seal body [14] in the cylinder body divider [13], [15A] radially slots at radial seal body [14] two ends, sliding end face seal bar [15] and the leaf spring [17] allocated into, radial seal body [14] drilling radial hole [16A] is allocated coil spring [16] into, radial seal body [14] is the long strip part, upper bottom surface, both ends of the surface, bi-side are the plane, bottom surface is and the recessed garden cambered surface of the little garden of oscillating-piston arc [18] with radius, in the cylinder body spacer body [13] above-mentioned component parts can 1 to 5 cover, cylinder body divider [13] two ends are milled with the sliding axial seal body [19] of allocating into of radial groove [19A], the axial dimension of axial seal body [19] is greater than the axial dimension of end face seal bar [15], groove [19A] interior edge face axial drilling [20A], allocate coil spring [20] into, axial seal body [19] drilling radial hole [21A], allocate coil spring [21] into, radial seal body [14] under the spring force effect, end face seal bar [15], axial seal body [19] and left and right sides cylinder body both ends of the surface inwall, the little garden of oscillating-piston cambered surface [18], and the totally-enclosed handing-over of formation between the inverted T shape sealing block [23], the tricks of axial seal body [19] is same as the tricks of radial seal body [14], is 1 to 5 cover;

(3), the Sealing of the little garden of oscillating-piston cylinder [18] two ends, the a plurality of inverted T shape sealing blocks of outer cause [23], be arranged in order sliding fitting in the groove [24] at the little garden of oscillating-piston cylinder [18] outer rim two ends, [B] of inverted T shape sealing block [23], [C], [D] face is and the concentric garden cambered surface of oscillating-piston center line, the same radius of the little garden of [B] face and oscillating-piston cambered surface [18], [E], [F], [G], [H] face and the radial plane by the oscillating-piston center line overlap, [I], [J], [K] face and oscillating-piston center line are perpendicular, join inverted T shape sealing block [23] in conduit [24] outer rim cunning, the inner edge cunning is joined L shaped seal ring [25], in the seal ring [25] [L], [M], [N] face is and the concentric garden cambered surface of oscillating-piston center line, [L] face has identical radius with [C] face, [M] face and [D] face have same radius and fit, [P], [Q] face is fitted with the axial seal body [8] on both sides respectively, [R], [S], [T] face and oscillating-piston center line are perpendicular, and [R] and [I] at grade, [S] and [K] fits, seal ring [25] back installation plate spring [26] in the conduit [24], leaf spring [26] is with seal ring [25], inverted T shape sealing block [23] to two end axles to ejection, and fit in a left side, on the right cylinder body inner side surface, seal ring [25] is along circumferentially being divided into two to three, little gap is left in the jointing place, have conduit [27A] in the seal ring [25], the sliding long strip tablet [27] of joining in the conduit [27A], seal ring [25] is identical with the axial length of tablet [27], boring [28A] in the seal ring [25], allocate coil spring [28] in the hole [28A] into, close of several inverted T shapes [23], 2 to 3 seal rings [25], leaf spring [26], tablet [27], radial seal body [14] in sealing chain that coil spring [28] constitutes and the cylinder body divider [13], end face seal bar [15], the oscillating-piston axially seal body [8] that overhangs in the part [3], and left and right sides inner surface of cylinder block constitutes totally-enclosed handing-over;

Above-mentioned part [5] and part [8] also can be processed into same part; A plurality of parts [23] and part [25] also can be processed into same part; Coil spring also can change leaf spring in the above-mentioned part.

2, fully closed seal device for swing piston IC engine as claimed in claim 1 is characterized in that: described oscillating-piston radial seal body [4] the epirelief garden cambered surface that overhangs in the part [3] is opened 1 to 5 road groove [11] vertically, constitutes the labyrinth labyrinth seal.

3, fully closed seal device for swing piston IC engine as claimed in claim 1, it is characterized in that: described oscillating-piston that face that axially seal body [8] and left and right sides cylinder body fit that overhangs in the part [3] is radially opened 1 to 5 road groove [12], formation labyrinth labyrinth seal.

4, fully closed seal device for swing piston IC engine as claimed in claim 1 is characterized in that: radial seal body [14] is opened 1 to 5 road groove [22] vertically in the described cylinder body divider [13] on its recessed garden cambered surface, constitutes the labyrinth labyrinth seal.