Cylinder structure and the modularization gas storage chamber that purifies air
Technical field
The present invention relates to a kind of gas storage chamber and be arranged on the structural cylinder structure of internal combustion engine crankcase of purifying air that is used for the large two-stroke explosive motor.The gas storage chamber that purifies air purifies air to the cylinder supply, supports turbosupercharger and waste gas receiver.Cylinder structure forms a bearing with support cylinder lining, camshaft casing and the gas storage chamber that purifies air.
Background technique
" two-stroke engine K98MC project guide " (" K98MC Project Guide Two-Stroke Engines ' 2nd edition1999, MAN B﹠amp from Man B ﹠ W Diesel A/S's second edition in 1999; W Diesel A/S) as can be known, the Purge gas gas storage chamber that is used for the large two-stroke explosive motor is formed by the tubulose lengthwise body that extends along the whole length of cylinder structure.The gas storage chamber that purifies air is provided with horizontal pipeline and flows to cylinder from cylinder with the guiding Purge gas.Horizontal pipeline has flange, and described flange connects with the flange that corresponding horizontal pipeline from cylinder structure extends.The gas storage chamber that purifies air supports turbosupercharger, auxiliary blower, waste gas receiver and comprises the cooler bin of air-cooler.
Cooler bin and turbosupercharger are incorporated in the gas storage chamber that purifies air by one, and acting in conjunction is with the air of cooling and purifying.Cooler bin is the constituent element of gas storage chamber of purifying air, and obtaining a structure, when motor during in work, this structure is enough stable to support itself weight, simultaneously turbosupercharger be exposed to vibrate and pressure surge in.Cooler bin is specially designed according to the type of the turbosupercharger that adopts.Therefore, in case after the gas storage chamber assembling that purifies air, only abandon the gas storage chamber of just having made that purifies air and re-construct one again, could change the type of turbosupercharger.
The weight of weight of gas storage chamber own and the said elements that supported by the gas storage chamber that purifies air because purify air, the gas storage chamber that purifies air must be incorporated on the cylinder structure as a unit by a fastening structure.Cross connecting plate is welded on the gas storage chamber that purifies air between each cylinder.The end of connecting plate is provided with in order to be bolted to the flange on the cylinder structure.Because the huge weight that this bolt itself will bear makes this bolted size very big and very expensive.
Purify air gas storage chamber, turbine seat and Purge gas cooler bin must assemble before being installed to cylinder structure fully.Thereby, in the production process of motor, be difficult to the design of the gas storage chamber that purifies air and the element that is supported thereof are changed.And because its bigger size, the gas storage chamber that purifies air can not be produced between dolly.
In existing structure, last stiffening rib can only be connected with the top of cylinder structure, because only the rigidity at that place enough is applied to this respect.The ideal height that goes up stiffening rib can not satisfied in this fixing position, thus the intensity that stiffening rib can not be satisfied the demand.
Summary of the invention
The object of the invention is to provide a kind of a kind of gas storage chamber and cylinder structure of mentioning at first of purifying air that overcomes above-mentioned defective.The present invention seeks to by being provided for the gas storage chamber and be placed on that the structural cylinder structure of above-mentioned internal combustion engine crankcase realizes of purifying air of large two-stroke explosive motor, described cylinder structure top is provided with the annular opening of some in order to receive and to support the cylinder buss of equivalent amount, described cylinder structure also comprises the first side wall and the some extension plates that extends from described the first side wall that is provided with the opening that equal number purifies air in order to reception, and gas storage chamber at least a portion segmentation that therefore purifies air is arranged between the extension plate.
By the cylinder structure with extension plate is provided, the gas storage chamber that purifies air can be divided into fraction, therefore just can produce the gas storage chamber that purifies air in less relatively workshop.And, before being installed to cylinder structure, the gas storage chamber that purifies air need not be assembled, even in the stage after the leaning on relatively of the production process of motor, also can replace original part with different parts.
By assemble the each several part of the gas storage chamber that purifies air between the extension plate of cylinder structure, under same gravity, the gas storage chamber that purifies air that assembles has significantly better stability than structure of the prior art.The stability that increases allows cooler bin to be contained on the extension plate of the gas storage chamber that purifies air, and for example connects with bolt.This just makes any stage in process of production, or even after motor finished, pattern and its cooling air case of changing turbosupercharger became possibility, and do not need to construct a new gas storage chamber that purifies air.And, an enough big cooler bin also might be installed to handle the air that two turbosupercharger provide on the gas storage chamber that purifies air, for example, two shared big cooler bins of turbosupercharger.Large-scale cooler bin can be installed in the more than one part of the gas storage chamber that purifies air.New purify air gas storage chamber and cylinder structure can also make cooler bin be configured as to have the shape of diffuser part, thereby auxiliary blower can be used as on the motor mounting, auxiliary blower has a turbine, and turbine is to be parallel to or to be installed in the diffuser with turbosupercharger mode in a straight line.
Extension plate is to be attached to good substrate on the cylinder structure in order to will go up stiffening rib, can be along fixing on any point on the extension plate length because go up stiffening rib.Therefore, the height of last stiffening rib can easily be adjusted to the height of platform.
Be provided preferably with the passage that opening purifies air and partly circulates to the next one from a part with formation on the wall extension.
The gas storage chamber that purifies air can be made up of different parts.Therefore, can divide the manufacturing of coming as private part in order to the relative complex that supports turbosupercharger.Different parts can be chosen from the part of standard, turbosupercharger supporting part, auxiliary blower supporting part and bridging portion, the part of standard preferably is welded on the cylinder structure, and the turbosupercharger supporting part then preferably is connected on the cylinder structure with bolt.
Preferably, the turbosupercharger supporting part comprises a base and a casing that holds the cooler that purifies air of placing turbosupercharger.
For increasing the integral rigidity of cylinder structure and motor, on each wall extension of cylinder structure two reinforced walls can be set, reinforced wall extends to wall extension from sidewall and has the roughly hollow profile in triangularity cross section to form one, and described hollow profile is fastened to stay-bolt on the crankcase in order to accommodate with cylinder structure.
Be improvement the purify air processing and the assembly operation of gas storage chamber, cylinder structure has the lateral section that preferably is roughly rectangle.
Another object of the present invention is to provide a kind of two-stroke explosive motor of mentioning at first that overcomes above-mentioned defective.This purpose is by providing the two-stroke explosive motor that comprises pedestal, crankcase structure, cylinder structure and the gas storage chamber that purifies air to realize, wherein, pedestal is provided with the main bearing that is used for bent axle, and crankcase structure is installed on the pedestal, and the gas storage chamber that purifies air is installed on the crankcase structure.
The waste gas receiver by the supports support that protrudes out from extension plate to obtain firm compact structure.
Crankcase can comprise hollow profile in order to accommodating stay-bolt, and hollow profile has with the hollow profile of cylinder structure and is roughly corresponding triangular-section, leg-of-mutton cross section.Therefore, the integral rigidity of motor is improved.
Another purpose of the present invention is to provide a kind of purify air gas storage chamber and manufacture method of mentioning at first that is used for the cylinder structure of two-stroke explosive motor of making.This purpose of the present invention is to realize that by the method that provides the manufacturing that may further comprise the steps to purify air gas storage chamber and cylinder structure step comprises:
Cylinder structure with the first side wall is provided, and the first side wall is provided with and receives the opening that purifies air;
The some extension plates of adjunction on the first side wall; And
The various piece of the gas storage chamber that purifies air is installed between extension plate.
From making and the rigidity angle, preferably each several part is welded on the extension plate, be to be welded on the sidewall simultaneously better.
For ease of modularization production, each several part can be selected from comprise a group of different piece.
Other purposes, technical characteristics, advantage and the performance of cylinder structure of the present invention can be more apparent from following detailed.
Description of drawings
Hereinafter, the embodiment shown in is explained in more detail the present invention with reference to the accompanying drawings, wherein
Fig. 1 is the sectional view of existing motor;
The sectional view of Fig. 1 a motor;
Fig. 1 b is the broken section enlarged view of Fig. 1 motor along the Ib-Ib line;
Fig. 2 is the stereogram of cylinder structure;
Fig. 3 is the partial sectional view on cylinder structure top;
Fig. 3 a and 3b are the sectional views of the cylinder structure different structure of different structure;
Fig. 4 is the stereogram that is installed in the gas storage chamber that purifies air on the cylinder structure;
Fig. 5 is the detailed cross sectional view of gas storage chamber and cylinder structure of purifying air;
Fig. 5 a is the detailed view with weld seam of decompression breach;
Fig. 5 b is the detailed view with weld seam of decompressing groove;
Fig. 6 is the cylinder structure of different structure and the more detailed cross sectional view of gas storage chamber that purifies air; With
Fig. 7 shows the schematic representation of combining unit outside dimensions for the cylinder structure and the gas storage chamber that purifies air.
Embodiment
In the detailed description hereinafter, will be by preferred embodiment present invention is described.Fig. 1 discloses a kind of existing than the present invention motor motor of Gao Gengkuan more.
Fig. 1 a discloses a kind of two-stroke direct current purification of diesel engine 1 that is arranged on large-scale 12 cylinders on the pedestal 7, and pedestal 7 has the main bearing that is used for bent axle 22.For the ease of producing, pedestal 7 is divided into the part of some suitable dimensions.Its longitudinal channel-section steel by high-quality welding is formed with the welding beam with cast steel bearing spider.The A shape crankcase structure 2 that is welded is installed on the pedestal 7.Crankcase structure is arranged between each cylinder, the buttress that is provided with transverse plate 9 forms is arranged on it, the outer wall 10 that lengthwise extends on transverse plate 9 and the crankcase structure 2 is connected to each other, and transverse plate 9 extends to increase the lateral stiffness of crankcase structure 2 to the bottom from the top of A shape crankcase structure 2.
Be installed on the transverse plate 9 in order to the vertical fairlead 13 of role-taking, for example by welding in the power on the cross tieing 21.Two fairlead 13 lateral symmetry are installed in the both sides of inner transverse plate 9.The rear wall of each fairlead 13 is supported by the additional wall 14 of vertical extension, and additional wall 14 connects fairlead and transverse plate 9.As shown, additional wall 14 can comprise the plate member that acutangulates setting with transverse plate, also can utilize the additional wall 14 with horizontal quadrant or 1/4th oval circumferential portion, and promptly additional wall 14 is in transverse plate 9 extension that roughly meets at right angles.Fairlead 13, additional wall 14 and transverse plate 9 form one and accommodate stay-bolt and have the hollow profile of high torsional rigid.
As shown in Figure 4, two cylinder structures 30,30 ' are the top that a straight line is installed in A shape crankshaft structure 2.Each cylinder structure 30,30 ' supports six cylinder busses 6 of motor 1.Can certainly adopt other structures, have three cylinder structures, or have the motor of 11 cylinders, this motor to comprise a cylinder structure and a cylinder structure with six cylinders with five cylinders as a motor.Described cylinder buss 6 is by the alloy cast iron manufacturing.The top of cylinder buss 6 is provided with cooling hole, and short cooling film is arranged in the cooling hole.Cylinder buss 6 is provided with exhaust port and is used for the boring of cylinder lubrication.Cylinder structure 30, a side of 30 ' supporting cam wheel axle box 3.Purify air gas storage chamber 4 along cylinder structure 30,30 ' opposite side setting.The gas storage chamber 4 of purifying air supports the pressurization that purifies air of 8 pairs of turbocharger unit, the pressure surge that each cylinder of waste gas receiver 11 balances is interior.The compressor of turbosupercharger 8 is drawn air through air filter in engine compartment, compressed air is by the cooler cooling that purifies air for a plurality of turbocharger operation.The cooler that purifies air is provided by the water smoke break, and this break prevents that the water of airborne condensation is brought in purify air gas storage chamber and the burning cavity.
Please refer to Fig. 2, shown in Figure 3, will describe cylinder structure 30 in detail, wherein cylinder structure 30 ' is identical with cylinder structure 30.Cylinder structure 30 comprises that two lengthwises extend to form the steel plate of cylinder structure 30 two sides 32,33. Sidewall 32,33 interconnects with the steel plate that forms front and back walls 34,35 by horizontal expansion.Sidewall 32,33 and front and back walls 34,35 weld together the hollow structure that is roughly the rectangular cross-section with formation.Front and back walls 34,35 also can tilt mutually to alleviate the weight of structure.The steel plate 36 that additional lateral is extended is arranged between the cylinder, and therefore the rectangular cross-section with cylinder structure is separated into projected square part.Additional lateral steel plate 36 is welded on the sidewall 32,33 of cylinder structure.Shown in Fig. 3 a, another preferred embodiment of the present invention, each cylinder also is provided with four steel plates 37 and extends with 45 angular direction to add-in card from sidewall, therefore, makes the interior cross section of cylinder structure for roughly becoming Octagon.
Cylinder structure can be made by general steel plate or ingot iron.According to a preferred embodiment of the present invention, the steel plate of making cylinder structure is a rolled plate.Upper steel plate can be made by other welding materials, for example cast steel.
Upper steel plate 31 is provided with annular opening 39 to hold and support cylinder lining 6, and upper steel plate 31 is welded to the steel plate that forms sidewall 32,33, on the steel plate 36 of front and back walls 34,35 and the horizontal expansion that adds.Sidewall 32 is provided with opening 38 and is beneficial to each cylinder and allows to purify air and enter in the cylinder structure 30.Upper steel plate 31 also is provided with intensive paired hole 40 to hold stay-bolt 16 on the limit of its longitudinal extension.
As shown in Figure 3, in the preferred embodiment of the present invention, sidewall 32,33 tilts mutually.Therefore, sidewall 32,33 in the distance at cylinder structure 30 tops less than its distance in cylinder structure 30 bottoms.The angle that upper steel plate 31 and sidewall are 32,33 is the 2-10 degree preferably, but also may be selected in the 0-20 degree.Setting by sidewall 32,33 opposite tilts, in engine operation process, the power of bigger variation is applied on the upper steel plate 31 by cylinder buss 6 and stay-bolt, and the correspondingly crooked upper steel plate 31 and the mechanical stress at sidewall 32,33 welded contact places of causing of upper steel plate reduces.
Shown in Fig. 5 and Fig. 5 a another preferred embodiment, the setting that meets at right angles of sidewall 32,33 and upper steel plate 31.By passing the breach 43,44 that weld seam is provided with, the mechanical stress of sidewall welded contact reduces. Breach 43,44 has semi annular section.This sectional shape also may be selected to be half elliptic or other similar shapes.
Shown in Fig. 5 b of the present invention another preferred embodiment, upper steel plate 31 and sidewall 32,33 are connected by fillet welded contact 48.The junction point of fillet welded contact 48 and sidewall 32,33, and the junction point of fillet welded contact 48 and upper steel plate 31 are made, and for example by grinding, go out to be roughly semiorbicular groove 49,49 ' to reduce mechanical stress between fillet welded contact 48 and the corresponding steel plate 31.
Extend base flange 45 from sidewall 32,33 bottom levels.The rib 46 that is welded with vertical extension on the sidewall 33 and is provided with towards cam box 3.Be welded on the rib 46 in order to the flange 47 that is installed to cam box.Dunnage 53 is welded to the triangular-shaped profile of holding stay-bolt on the end of flange 47 and the sidewall 33 with formation.For the motor that does not have camshaft, dunnage just is welded direct on wall 33 and the rib 46.
The extension plate 50 of horizontal expansion is welded on the sidewall 32 in the face of the gas storage chamber 4 that purifies air.Extension plate 50 is provided with opening 51 with flowing of allowing to purify air.The purify air flat board 52 of gas storage chamber roof of formation is welded between extension plate 50 and the upper steel plate 31.Stiffening plate 53 extends to sidewall 32 with acute angle from the both sides of each extension plate 50, forms a hollow profile that is roughly the triangular-section with the either side at extension plate 50.Extension plate 50, stiffening plate 53 and sidewall 32 form one together and have the hollow profile that height reverses compressional stiffness, hold stay-bolt 16 in the described hollow profile.
Be roughly on the internal surface that square base plate 54 is welded to cylinder structure 30.Be welded to the corresponding opening of base plate 54 central authorities with the annular flange flange 55 of the stuffing box that holds piston rod.
Cylinder structure 30,30 ' and the stay-bolt clamping of pedestal 7 by paired intensive setting, stay-bolt 16 is arranged in the hollow profile of the hollow profile of cylinder structure and A shape crankcase structure, and from cylinder structure 30,30 ' upper steel plate extends to the bottom of A shape crankcase structure 2.When engine operation, these hollow profile are just as the guide groove of stay-bolt, to cylinder structure 30,30 ' and A shape structure 2 chambers provide required compressional stiffness to stand stay-bolt 16 to structure chamber 2 and cylinder structure 30,30 ' the pressure big, that change that transmits, the low side of stay-bolt 16 is fastened in the tapped hole on pedestal 7 tops suitably.Preferably, cylinder structure 30, the hollow structure of 30 ' hollow profile and crankcase structure 2 have identical cross section and mutual upper and lower settings.As shown in Figure 3, on limit, camshaft case side, cylinder structure 30,30 ' hollow structure can be installed on the camshaft casing 3 by flange 47 fixed points.
As shown in Figure 4, forming the gas storage chamber 4 partial C shape steel plates 56 that purify air is welded between the extension plate 50.Therefore the purify air inner space of gas storage chamber 4 is closed.Therefore, cylinder structure 30,30 ' sidewall 32 also is the sidewall of the gas storage chamber 4 that purifies air.Be cylinder structure 30 by sidewall 32, make cylinder structure 30 thereby 30 ' sidewall also is the purify air sidewall of gas storage chamber 4,30 ' becomes the unit of a compact structure with the gas storage chamber 4 that purifies air.The present invention also has an advantage to be to make turbosupercharger to hang down with placing, the setting thereby waste gas receiver 11 also can be lowerd, thus the whole height of motor is diminished.Waste gas receiver 11 is supported by the carriage 63 that is arranged on the extension plate 50.The relatively low position of turbosupercharger 8 and waste gas receiver 11 increases the natural frequency of whole waste gas acceptor device.Because the increase of waste gas receiver 11 rigidity can be divided into waste gas receiver 11 plurality of units to reduce manufacture cost.
The gas storage chamber 4 of purifying air is made up of different piece.Each cylinder structure includes one or two private part 57 to hold turbosupercharger 8 and cooler bin 58.Special-purpose turbosupercharger supporting part 57 is a Welding Design, comprises upper surface plate and is arranged on its lower curtate in order to receive the opening through the air of supercooler.Cooler bin bolt or be welded on the extension plate, the upper steel plate which is provided with the band opening is to receive the pressurized air through turbosupercharger.The flange of turbosupercharger 8 is bolted to the upper steel plate of cooler bin 58.The internal cooler of heat exchanger form is arranged on the inside of cooler bin.A more than turbosupercharger (not shown) be served and be supported to cooler bin can across the several sections of the gas storage chamber that purifies air.Another private part 60 of gas storage chamber 4 of purifying air comprises the suction port of an auxiliary blower 61.Thereby cooler bin 58 can be configured as the shape with diffuser part makes auxiliary blower be installed in diffuser inside as the motor that has impeller, and auxiliary blower is to be parallel to or to be inserted in the diffuser with mode that turbosupercharger point-blank is provided with.
The gas storage chamber 4 that purifies air is made up of 12 parts: 56, three turbosupercharger supporting parts 57 of C shape part and three auxiliary blower parts 60 of six standards.The gas storage chamber 4 that purifies air connects two cylinder structures 30,30 ' by a single annular bridging portion 62, and annular bridging portion 62 is arranged between the outer extension plate 50 of two cylinder structures 30,30 ', and three's setting in alignment.By the part between the welding extension plate, the cylinder structure and the gas storage chamber that purifies air form the stable whole structure with high degree of rigidity.
By utilizing the modular design to the gas storage chamber 4 that purifies air, particular all can be produced in less relatively workshop.
Be connected with extension plate 50 in order to the last stiffening rib 71 (referring to Fig. 1) that motor is connected with a sidewall of engine case.Extension plate 50 can be connected with last stiffening rib in any position along its vertical extension.Therefore, the height of last stiffening rib can be easily, for example according to the podium level adjustment of engine case.
As shown in Figure 7, cylinder structure 30,30 ' and the lateral cross section of the gas storage chamber that purifies air that is mounted thereon all be roughly rectangle, this this unit that makes in process of production processing and processing in all very practical.
Though describe the present invention for the ease of understanding, purpose of description is also only at this like this, and those skilled in the art also can make amendment to the present invention not exceeding scope of the present invention.
Therefore, the environment of researching and producing according to the present invention is preferred embodiment described in detail product of the present invention and production method reference, and these descriptions are only set forth principle of the present invention.Can make amendment to embodiments of the present invention and structure in the scope that does not exceed spirit of the present invention and claim.