CN213392443U

CN213392443U - Scavenging system connecting device and scavenging system

Info

Publication number: CN213392443U
Application number: CN202022240952.4U
Authority: CN
Inventors: 李孝连; 周秀亚
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-06-08
Anticipated expiration: 2030-10-10

Abstract

The utility model belongs to the technical field of marine engine, a scavenging system connecting device and scavenging system are disclosed. The scavenging system connecting device comprises a shell and a connecting pipe, wherein the shell comprises a cavity with an opening at one end and a bottom plate frame arranged at the opening end of the cavity, the shell is provided with a channel pipe communicated with the cavity, and the bottom plate frame is detachably connected with the inlet end of the scavenging box; one end of the connecting pipe is detachably connected with the channel pipe, and the other end of the connecting pipe is detachably connected with the outlet end of the supercharger. The bottom plate frame is detachably connected with the inlet end of the scavenging box, so that the scavenging box does not need to be replaced when the supercharger is replaced, and the replacement period is greatly shortened; the connecting pipe connected with the channel pipe of the shell in a detachable mode is arranged, the connecting pipe is connected with the outlet end of the supercharger in a detachable mode, when the supercharger is replaced, the connecting pipe with the corresponding diameter can be replaced according to the difference of the diameter of the outlet end of the supercharger, and the shell of the connecting device of the scavenging air box or the scavenging system does not need to be replaced.

Description

Scavenging system connecting device and scavenging system

Technical Field

The utility model relates to a marine engine technical field especially relates to a scavenging system connecting device and scavenging system.

Background

During the working process of the marine engine, fresh air enters the cylinder through the scavenging box after being sucked and pressurized by the supercharger and participates in combustion in the combustion chamber. In the design of a conventional scavenging box, a supercharger is installed on the scavenging box through bolts, the outlet end of the supercharger is connected with the inlet end of the scavenging box through an expansion joint, and the inlet end of the scavenging box and the scavenging box are of an integrated structure formed by welding.

In actual ship, machine, oar match, can dispose different superchargers to same engine usually, can satisfy the demand of the different grade type boats and ships power of power matching of same marine engine, but the structure of the entry end of current scavenging case and scavenging case design as an organic whole, and the diameter size of the entry end of scavenging case is fixed, the diameter size of the exit end of the booster of different power is different, it means need change the scavenging case to change the booster, and then lead to the increase of dismouting cycle length and dismouting cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a scavenging system connecting device and scavenging system to need to change when solving and changing the booster compressor and sweep the gas case and lead to the dismouting cycle length, the problem of the increase of cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a scavenging system connecting device comprising:

the device comprises a shell, a first air inlet and a second air inlet, wherein the shell comprises a cavity with an opening at one end and a bottom plate frame arranged at the opening end of the cavity, the shell is provided with a channel pipe communicated with the cavity, and the bottom plate frame is detachably connected with an inlet end of a scavenging box;

one end of the connecting pipe is detachably connected with the channel pipe, the other end of the connecting pipe is detachably connected with the outlet end of the supercharger, and air flow in the supercharger can sequentially flow into the scavenging box through the connecting pipe, the channel pipe and the cavity.

Preferably, the shell is further provided with an access hole communicated with the chamber, and the access hole is detachably connected with a door cover.

Preferably, the diameter of the manhole is smaller than the diameter of the passage pipe.

Preferably, the connection pipe is detachably connected to one end of an expansion joint, and the other end of the expansion joint is detachably connected to the outlet end of the supercharger.

Preferably, support plates are disposed on both sides of the housing.

Preferably, the support plate is provided with a lifting hole.

Preferably, a sealing strip is arranged between the bottom plate frame and the inlet end of the scavenging air box.

Preferably, the upper end of the housing is rounded.

Preferably, the axis of the passage tube forms an acute angle with the horizontal.

The utility model provides a scavenging system, includes booster, scavenging case and the utility model provides a scavenging system connecting device.

The utility model has the advantages that:

the utility model provides a scavenging system connecting device and scavenging system, on one hand, through the detachable connection of the bottom plate frame arranged on the shell and the inlet end of the scavenging box, when replacing the supercharger, the scavenging box does not need to be replaced, thereby greatly reducing the replacement period; on the other hand, can dismantle the connecting pipe of being connected through the passageway pipe that sets up and casing, the connecting pipe can be dismantled with the exit end of booster and be connected, when changing the booster, can change the connecting pipe that corresponds the diameter according to the difference of the diameter of the exit end of booster, need not to change scavenging air box or scavenging system connecting device's casing, simple structure, the simple operation has saved the replacement cost when saving the change time.

Drawings

Fig. 1 is a front view of the connection device of the scavenging system provided by the present invention;

fig. 2 is a side view of the connection device of the scavenging system provided by the present invention;

fig. 3 is a schematic structural diagram of a housing of the connection device of the scavenging system provided by the present invention;

fig. 4 is a schematic structural diagram of a scavenging system provided by the present invention.

In the figure:

1. a housing; 11. a bottom plate frame; 111. a sealing strip; 12. a passage tube; 13. an access hole; 131. a door cover; 14. a support plate; 141. lifting holes; 2. a connecting pipe; 3. an expansion joint; 4. a scavenging air box.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a connecting device of a scavenging system, as shown in figures 1 to 3, comprising a shell 1 and a connecting pipe 2, wherein the shell 1 comprises a cavity with an open end and a bottom plate frame 11 arranged at the open end of the cavity, the shell 1 is provided with a channel pipe 12 communicated with the cavity, and the bottom plate frame 11 is detachably connected with the inlet end of a scavenging air box 4; one end of the connecting pipe 2 is detachably connected with the channel pipe 12, the other end of the connecting pipe 2 is detachably connected with the outlet end of the supercharger, and air flow in the supercharger sequentially flows into the scavenging air box 4 through the connecting pipe 2, the channel pipe 12 and the cavity, so that the scavenging process is realized.

Optionally, the casing 1 is further provided with an access hole 13 communicating with the chamber, the access hole 13 is detachably connected with a door cover 131, and through the access hole 13, safety inspection can be performed on the casing 1, and maintenance of the casing 1 is facilitated. Preferably, the diameter of the access hole 13 is smaller than that of the channel pipe 12, and the diameter of the access hole 13 is smaller than that of the channel pipe 12, so that the daily maintenance of the shell 1 can be met, and the structural stability of the shell 1 cannot be influenced.

Further, the upper end of the housing 1 may be, but not limited to, a circular arc shape, and the upper end of the housing 1 is designed to be a circular arc shape to be beneficial to bearing the acting force, so as to ensure the structural stability of the housing 1.

Optionally, support plates 14 are provided on both sides of the housing 1, and the structural stability of the housing 1 can be enhanced by providing the support plates 14. Preferably, the support plate 14 is provided with a lifting hole 141, and installation, replacement, and transfer of the housing 1 can be facilitated by providing the lifting hole 141.

A sealing strip 111 is arranged between the bottom plate frame 11 and the inlet end of the scavenging air box 4, and the sealing requirements in the inlet end support of the shell 1 and the scavenging air box 4 can be met.

Alternatively, the axis of the passage tube 12 may be at an acute angle to the horizontal, that is, the passage tube 12 of the housing 1 may be inclined. Limited by the positions of the supercharger and the scavenging box 4, the outlet end of the supercharger is not opposite to the inlet end of the scavenging box 4, at the moment, the passage pipe 12 is inclined to communicate the supercharger with the scavenging box 4, and the space occupied by the inclined passage pipe 12 is small.

The area of the end, far away from the shell 1, of the channel pipe 12 is smaller than the area of the joint of the channel pipe 12 and the shell 1, so that the amount of airflow flowing out of the joint of the channel pipe 12 and the shell 1 in unit time is large, the airflow in the connecting device of the scavenging system can rapidly flow into the scavenging air box 4, the amount of airflow conveyed to the scavenging air box 4 is increased, and the airflow can be diffused into the whole scavenging air box 4 before entering the scavenging air box 4.

The channel pipe 12 is provided with a flange, the connecting pipe 2 is detachably connected with the channel pipe 12 through the flange, the connecting strength between the channel pipe 12 and the connecting pipe 2 is improved through the flange arranged on the channel pipe 12, the detachable connection mode can be but not limited to bolt connection, the bolt connection is simple in structure, the connection is reliable, and the mounting and dismounting are convenient.

Optionally, the connecting pipe 2 is detachably connected to the outlet end of the supercharger through the expansion joint 3, wherein the connecting pipe 2 is detachably connected to one end of the expansion joint 3, and the other end of the expansion joint 3 is detachably connected to the outlet end of the supercharger, and since the pressure of the air flow flowing out of the supercharger is large, the arrangement of the expansion joint 3 can buffer the air flow, so as to reduce the impact force of the air flow on the housing 1.

Further, the shape of the end of the connecting pipe 2 connected with the outlet end of the supercharger can be determined according to the shape of the outlet end of the supercharger or the expansion joint 3, so that different superchargers can be met, and the compatibility of the connecting device of the scavenging system is improved.

The utility model also provides a scavenging system, as shown in FIG. 4, this scavenging system includes the scavenging system connecting device in booster (not shown in the figure), scavenging case 4 and the above-mentioned embodiment, and scavenging system connecting device's one end is connected with the booster outlet end, and the other end is connected with the entry end of scavenging case 4, and the air current in the booster flows into in the scavenging case 4 through scavenging system connecting device.

To sum up, the utility model provides a scavenging system connecting device and scavenging system, on one hand, through the detachable connection of bottom plate frame 11 on casing 1 and the entry end of scavenging case 4, when changing the booster, need not to change scavenging case 4, reduced the change cycle by a wide margin; on the other hand, through setting up connecting pipe 2 that can dismantle the connection with the passageway pipe 12 of casing 1, connecting pipe 2 can dismantle with the exit end of booster and be connected, when changing the booster, can change the connecting pipe 2 that corresponds the diameter according to the difference of the diameter of the exit end of booster, need not to change scavenging case 4 or scavenging system connecting device's casing 1, simple structure, the simple operation has saved the replacement cost when saving the change time.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A scavenging system connecting device, comprising:

the device comprises a shell (1), wherein the shell (1) comprises a cavity with an opening at one end and a bottom plate frame (11) installed at the opening end of the cavity, the shell (1) is provided with a channel pipe (12) communicated with the cavity, and the bottom plate frame (11) is detachably connected with the inlet end of a scavenging air box (4);

the air-sweeping device comprises a connecting pipe (2), one end of the connecting pipe (2) is detachably connected with a channel pipe (12), the other end of the connecting pipe (2) is detachably connected with the outlet end of a supercharger, and air flow in the supercharger can sequentially pass through the connecting pipe (2), the channel pipe (12) and a cavity to flow into the air-sweeping box (4).

2. The scavenging system connecting device according to claim 1, characterized in that the housing (1) is further provided with a service hole (13) communicating with the chamber, and a door cover (131) is detachably connected to the service hole (13).

3. The scavenging system connecting device according to claim 2, characterized in that the diameter of the service hole (13) is smaller than the diameter of the passage pipe (12).

4. The scavenging system connecting device according to claim 1, characterized in that the connecting pipe (2) is detachably connected to one end of an expansion joint (3), and the other end of the expansion joint (3) is detachably connected to the outlet end of the supercharger.

5. The scavenging system connecting device according to claim 1, characterized in that the housing (1) is provided with support plates (14) on both sides.

6. The scavenging system connecting device according to claim 5, characterized in that the support plate (14) is provided with a lifting hole (141).

7. The scavenging system connecting device according to any one of claims 1 to 6, characterized in that a sealing strip (111) is arranged between the bottom plate frame (11) and the inlet end of the scavenging air box (4).

8. The scavenging system connecting device according to any one of claims 1 to 6, characterized in that the upper end of the casing (1) is rounded.

9. The scavenging system connecting device according to any one of claims 1 to 6, characterized in that the axis of the passage pipe (12) is at an acute angle to the horizontal.

10. Scavenging system, characterized in that it comprises a supercharger, a scavenging air box (4) and a scavenging system connection according to any of claims 1-9.