JP2012511667A - Internal combustion engine cover for flame discharge prevention arrest arrangement - Google Patents

Abstract

To provide an internal combustion engine cover provided with an arrester that absorbs and disperses a flame generated at the time of an internal explosion of the internal combustion engine in a discharge process to cancel the flame.
A seat part 11 of an arrest is integrally formed at an upper center of a cover 10 of an engine part of an internal combustion engine. The seat part 11 has a through hole 12 in the center, an O-ring groove 13 in an upper inner periphery, and a large number of them. The mounting portion 15 is formed on the outer peripheral edge of the engaging portion 14, and the O-ring 21, the disk 22, the elastic spring 23, and the engaging hole 14 are inserted into the O-ring groove 13 in the upper center of the seat portion 11. After arranging the upper plate 35 by directly arranging the arrest plate member 30 which is the stack of the bolts 25 and the arrest plate members placed on the outer peripheral placement portion 15, the cover plate 35 is assembled. An internal combustion engine cover for flame ejection prevention arrest arrangement, wherein a nut 28 is tightened from an upper part of a plate to an upper part of a tightening bolt 25 to mutually fix the cover and the arrester of the internal combustion engine. According to the present invention, the assembly is not directly assembled to the cover after the arrest is separately assembled as in the prior art, but is directly assembled to the cover of the engine unit. Work can be done easily.
[Selection] Figure 3

Description

  The present invention relates to an internal combustion engine cover provided with an arrester that absorbs and disperses a flame generated at the time of an internal explosion of the internal combustion engine in a discharge process and cancels it. More specifically, the arrest seat is integrally formed with the cover of the internal combustion engine. Since the arrest is not assembled separately and assembled to the cover, but is assembled directly to the cover, not only the assembly workability is improved, but also the flame ejection prevention arrest arrangement that makes it easy to replace the arrest parts The present invention relates to an internal combustion engine cover.

  In general, an internal combustion engine used in a ship or the like switches high-temperature and high-pressure gas generated by combustion of fuel to mechanical kinetic energy by generated power in an engine unit composed of a large number of cylinders.

  The engine portion of such an internal combustion engine maintains a relatively high internal temperature and pressure with high-temperature and high-pressure gas.

At this time, if the internal pressure exceeds a specified pressure (usually 0.03 to 0.05 kg / cm ² ), the internal gas is caused to flow out to the outside by the amount exceeding the normal pressure to maintain the normal pressure.

  This is because when an explosion accident occurs inside the engine unit due to the above-described overpressure, not only the peripheral devices but also human lives are damaged.

  Further, in order to prevent the internal flame from being ejected to the outside when an explosion accident occurs in the engine part of the internal combustion engine as described above, a flame ejection preventing arrest or the like is provided in the internal combustion engine. .

  As shown in FIGS. 1 and 2, this type of arrest 1 has a sheet through-hole 2a in the middle between a sheet 2 having a through-hole 2a in the center and a cover plate 3 at the top of the sheet. The disk 5 that is energized and cut off by 4 is hermetically disposed by the O-ring 6, and the arrest plate member portion 7 in which the arrest plate members are stacked is disposed on the outer peripheral edge, so that the cover plate 3 and the sheet 2 are disposed. It is assembled by engaging with a number of fastening bolts 8.

  Moreover, the arrest 1 assembled in this way is assembled to the upper part of the cover 100 constituting the engine part of the internal combustion engine.

  That is, the arrest 1 is assembled by being locked in the engagement hole 110 of the cover 100 of the engine portion by the mounting bolt 9 inserted through the arrest 1.

  The arrest device assembled in this way is designed to absorb and disperse the flame due to the internal explosion of the engine part in the outer peripheral edge plate part 7 after the disk 4 has primarily buffered, thereby canceling the periphery of the internal combustion engine. The risk of damage to equipment and human lives is prevented.

  However, since the conventional arrester is assembled to the cover of the engine unit in a separately assembled state, there is a problem that workability is poor.

  In particular, the work of fitting the mounting bolt 9 into the cover 10 of the engine part by fitting the mounting bolt 9 from the upper part of the separately assembled arrester 1 is extremely complicated. In addition, when replacing the internal parts of the arrest part, first, the engine part After removing the arrest 1 from the cover, it is necessary to disassemble the arrest and replace the internal parts of the arrest, resulting in reduced workability.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to form an arrest seat integrally with a cover of an internal combustion engine and separately assemble the arrest seat into the cover. Providing an internal combustion engine cover for flame jet prevention arrest arrangement that not only improves assembly workability, but also facilitates replacement work of the arrest parts as a result of being directly assembled to the cover instead of being assembled. There is a place to do.

  The above-described object is to form an arresting seat part integrally at the upper center of the engine part cover of the internal combustion engine and to directly attach the arresting part to the upper part of the cover. An O-ring groove and a number of engaging holes are formed on the outer peripheral edge of the O-ring groove, and an O-ring, a disk, an elastic spring, and an engaging hole are fitted into the O-ring groove at the upper center of the seat portion. Arrest plate material part that stacks the fastening bolts to be stopped and the arrest plate material placed on the placement part of the outer periphery is directly arranged, and after the upper cover plate is assembled, tightening from the upper part of the cover plate This is achieved by tightening a nut on the top of the bolt to mutually secure the cover and arrest of the internal combustion engine.

According to the present invention, the arrest seat that absorbs and disperses the flame generated during the internal explosion of the internal combustion engine in the exhaust process and cancels it is formed integrally with the cover of the internal combustion engine, and the arrest is separately assembled and assembled to the cover. However, since it is directly assembled to the cover, not only the assembly workability is improved, but also the replacement work of the arrest parts can be easily performed, resulting in the advantage of improved usability.

It is sectional drawing which shows the structure which assembles an arrest to the cover of the conventional internal combustion engine. It is a front view which shows the internal combustion engine cover of FIG. It is a front view which shows the internal combustion engine cover of this invention. FIG. 4 is a cross-sectional view of FIG. It is sectional drawing which shows the structure which attaches an arrest to the internal combustion engine cover of this invention.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  An internal combustion engine cover for arranging a flame ejection preventing arrest according to the present invention is provided so that the seat portion of the arrest is formed integrally with the cover of the engine portion of the internal combustion engine, and the arrest is directly assembled to the cover.

  That is, according to the present invention, as shown in FIGS. 3 to 5, in the engine part cover of the internal combustion engine in which the arrest is disposed, the cover 10 integrally forms the seat part 11 of the arrest at the upper center. The sheet portion 11 has a through hole 12 at the center, an O-ring groove 13 and a number of engagement holes 14 at the upper inner periphery, and a mounting portion 15 at the outer periphery. The O-ring 21 fitted in the O-ring groove 13, the disk 22, the elastic spring 23, the tightening bolt 25 locked in the engagement hole 14, and the arrest plate mounted on the mounting portion 15 on the outer peripheral edge are stacked. After the arrest plate member 30 is directly arranged and the upper cover plate 35 is assembled, the nut 28 is tightened from the upper portion of the cover plate to the upper portion of the tightening bolt 25 to mutually fix the cover and the arrest of the internal combustion engine.

  At this time, the fastening bolt 25 is formed with engaging portions 26, 26 at the upper and lower ends, the lower engaging portion is locked in the engaging hole 14 of the seat portion 11 of the cover, and the upper engaging portion is arrested. The nut 28 is configured to be tightened after being attached to the cover plate 35.

  The arrest plate member 30 may be formed in various ways. In the present invention, the plate material having the guide hole for guiding the flame is configured by stacking in multiple layers, but as long as the effect of offsetting by absorbing and dispersing the flame according to the shape of the guide hole for guiding the flame is obtained, Any structure can be adopted.

  The unexplained reference numeral 15 a indicates a concave groove provided in the mounting portion 15.

  The operation and action of the internal combustion engine cover for flame ejection prevention arrest arrangement according to the present invention configured as described above will be described below.

  The present invention is provided so that the seat of the arrest is formed integrally with the cover of the engine portion of the internal combustion engine, and the arrest is directly assembled to the cover.

  More specifically, the seat portion 11 of the arrest is integrally formed on the upper portion of the engine portion cover 10 of the internal combustion engine.

  The O-ring 21 is fitted into the oil groove 12 on the upper inner peripheral edge of the sheet portion 11 formed integrally in this manner, and the disk 22 and the elastic spring 23 are placed on the upper portion.

  Further, the lower engagement portion 26 of the fastening bolt 25 is locked in the engagement hole 14.

  Further, the mounting plate 15 formed on the upper and outer peripheral edges of the seat portion is directly provided with an arrest plate member portion 30 in which the arrest plate members are stacked.

  After the parts of the arrest are placed on the seat 11 of the arrest formed integrally with the upper portion of the engine cover 10 as described above, the cover plate 35 is assembled on the upper portion.

  At this time, the upper engagement portion 26 of the existing tightening bolt 25 is fitted into the mounting hole formed in the cover plate 35 and the nut 28 is tightened to fix the cover and the arrest of the internal combustion engine to each other.

  In this manner, the arrest can be integrally attached to the seat portion 11 of the arrest formed integrally with the upper portion of the engine cover 10.

  The arrest of the present invention arranged in this way cancels out the flame caused by the internal explosion of the engine part by absorbing and dispersing in the arrest plate member part 30 at the outer peripheral edge after the disk 22 temporarily cushions the internal combustion engine. The risk of damage to the peripheral equipment and human lives of the engine is prevented.

  In addition, the arrest of the present invention requires only the cover plate 35 to be removed by loosening the nut 28 when it is desired to replace the internal component. Therefore, the internal component, the arrest plate member 30, the O-ring 21, the disk 22, the elastic spring 23, etc. Can be easily replaced.

10: Cover,
11: seat part,
12: through hole,
13: Oil groove,
14: engagement hole,
15: Placement unit,
21: O-ring,
22: Disc,
23: elastic spring,
25: Tightening bolt,
26: engagement portion,
30: Arrest plate part,
35: Cover plate,

Claims (2)

In the engine part cover of the internal combustion engine in which the arrest is arranged,
The engine cover (10) of the internal combustion engine is configured so that an arrest seat part is integrally formed at the center of the upper part, and the arrest is arranged directly on the upper part of the cover. Installation internal combustion engine cover.   The seat (11) of the cover (10) has a through hole (12) in the center, an O-ring groove (13) and a number of engagement holes (14) in the upper inner periphery, and a mounting portion (in the outer periphery). 15), and an O-ring (21), a disk (22), an elastic spring (23), and an engagement hole (14) inserted into the O-ring groove (13) at the upper center of the seat portion (11). The fastening plate (25) locked on the outer plate and the arrest plate member (30) obtained by stacking the arrest plate members placed on the outer peripheral placement portion (15) are directly arranged, and the upper cover plate ( The flame according to claim 1, characterized in that after assembling (35), a nut (28) is tightened from the upper part of the cover plate to the upper part of the tightening bolt (25) to mutually fix the cover and arrest of the internal combustion engine. A cover for an internal combustion engine for arranging an ejection prevention arrest.

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