CN114704368A

CN114704368A - Exhaust device for ship engine

Info

Publication number: CN114704368A
Application number: CN202210627324.2A
Authority: CN
Inventors: 徐刚强
Original assignee: Weihai Ocean Vocational College
Current assignee: Weihai Ocean Vocational College
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-07-05
Anticipated expiration: 2042-06-06
Also published as: CN114704368B

Abstract

The invention relates to the technical field of ship exhaust, and discloses an exhaust device for a ship engine, which comprises two end pipes, wherein an arc head movably sleeved in an arc groove is fixedly arranged on one side of each end pipe close to a flange plate, a thread sleeve is movably sleeved in the thread groove, a telescopic cylinder is fixedly arranged at the position of the side edge of each end pipe, which is positioned in a metal corrugated pipe, a piston top block is movably sleeved in the hydraulic groove, hydraulic holes are uniformly formed in the middle ring positions of a first telescopic cylinder and a second telescopic cylinder in an annular shape and are communicated with a hydraulic ring cavity, a pressure relief rod is sleeved on the top thread of each adjusting hole, an adjusting piston is movably sleeved in each adjusting hole, the end pipes and the flange plate are movably connected together by arranging the end pipes and the flange plate, the connection positions are sleeved by the arc heads, the service life of an expansion joint is prolonged, meanwhile, the hydraulic ring cavity, the hydraulic groove and the like are arranged in the end pipes, the pressure relief rod and the adjusting piston are arranged, the expansion joint is more convenient and practical to install.

Description

Exhaust device for ship engine

Technical Field

The invention relates to the technical field of ship exhaust, in particular to an exhaust device for a ship engine.

Background

When a ship runs on the sea, a plurality of devices such as engines and the like need to work together, so a large amount of waste gas is generated, the waste gas needs to be concentrated together and then discharged after purification, a general exhaust system is discharged through a pipeline, the structure of each part inside the ship body is irregular, the diversion of the waste gas cannot be directly completed through the pipeline, and the temperature of the waste gas is high, so that a section of pipeline design is adopted and is connected together through an expansion joint, the expansion joint is a compensator and can adapt to and compensate additional stress caused by temperature difference and mechanical vibration, the conventional expansion joint mainly comprises a corrugated pipe, an end pipe, a flange, a support and the like, and the expansion joint is commonly used in the exhaust system of the ship, but certain defects exist:

the expansion joint is generally of an axial expansion type, namely, the expansion joint can perform expansion change within a certain range in the axial direction, but cannot be moved when the expansion joint is mounted on the pipeline, which is distributed at different locations on the hull, in practice, the pipeline is affected by different vibrations, which can cause the pipeline connected with the expansion joint to generate radial vibration to affect the service life of the expansion joint, meanwhile, the expansion joint cannot be twisted, and can be damaged when being acted by the twisting force of the connecting pipeline, so that the service life is influenced, and because the interior of the corrugated pipe is bent during operation, a plurality of impurities in the waste gas are easy to adhere to the surface of the bent part and are not easy to take away, and the impurities not only have high temperature but also have certain corrosivity and can cause the damage of the metal corrugated pipe, thereby reducing the service life of the metal corrugated pipe;

meanwhile, the expansion joint is of a telescopic structure, the pipeline on the ship is designed, the pipeline is installed in some inconvenient places in the ship body in advance, then the expansion joint is installed through the flange, but the length of the expansion joint cannot be guaranteed to be equal to the length of the expansion joint when the expansion joint is installed after the pipeline is installed, so that the expansion joint can be compressed or stretched by a certain length when installed in a conventional state, the telescopic range of the expansion joint is limited, the working range of the expansion joint is further reduced, the installation space of the expansion joint is limited, and the practicability of the expansion joint is greatly reduced.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the exhaust device for the ship engine, which has the advantages of long service life and convenience and practicability in installation and solves the problems in the background technology.

The invention provides the following technical scheme: an exhaust device for a ship engine comprises two end pipes, wherein a flange plate is movably arranged on the outer side of each end pipe, a support screw rod is connected between the outer rings of the end pipes in a threaded manner, an arc groove is formed in one side of the flange plate close to the end pipe, an arc head movably sleeved in the arc groove is fixedly arranged on one side of the end pipe close to the flange plate, a thread groove is annularly formed on the inner side of the end pipe, the interior of the thread groove is movably sleeved with a thread sleeve, a metal corrugated pipe is fixedly connected between the thread sleeves, the end pipe and the flange plate are fixedly connected with a rubber sleeve at the position of the outer ring of the arc-shaped head, a first telescopic cylinder is fixedly arranged at the position of the side edge of the end pipe at the right end, which is positioned inside the metal corrugated pipe, a second telescopic cylinder is fixedly arranged at the position of the side edge of the end pipe at the left end, which is positioned inside the metal corrugated pipe, a sliding groove is formed in the middle of the second telescopic cylinder, and the end portion of the first telescopic cylinder is movably sleeved inside the sliding groove.

Preferably, the end pipe is internally located the thread groove and has seted up hydraulic groove in the innermost circle department, the piston kicking block has been cup jointed in the inside activity of hydraulic groove, fixedly connected with spring between piston kicking block bottom and the hydraulic tank bottom wall, annular hydraulic pressure ring chamber has been seted up with the inside of first telescopic tube and second telescopic tube junction to the end pipe, hydraulic pressure ring chamber bottom and hydraulic tank bottom intercommunication, circle position is cyclic annular evenly seted up hydraulic pressure hole in first telescopic tube and the second telescopic tube, hydraulic pressure hole and hydraulic pressure ring chamber intercommunication.

Preferably, the end pipe at the right end is provided with an adjusting hole in the inner part close to one side of the arc-shaped head, the top of the adjusting hole is in threaded sleeve connection with a pressure relief rod, the inner part of the adjusting hole is movably sleeved with an adjusting piston, and the bottom of the adjusting hole is communicated with the bottom of the hydraulic groove.

Preferably, the arc groove and the arc head are movably sleeved with each other in a spherical arc groove shape, hydraulic oil is filled between the arc head and the arc groove, and the rubber sleeve is made of high-temperature-resistant materials.

Preferably, the cross sections of the end part of the threaded sleeve and the end part of the piston top block are inclined, the inclined angles of the threaded sleeve and the inclined angles of.

Preferably, the sliding groove and the hydraulic hole are filled with hydraulic oil and are in sliding sealing sleeve joint, the sliding groove, the hydraulic hole, the thread groove, the hydraulic groove and the adjusting hole are in sealing communication, the pressure relief rod is in threaded sleeve joint with the port of the adjusting hole, and the bottom of the pressure relief rod is kept in abutting contact with the adjusting piston after the expansion joint is installed.

The invention has the following beneficial effects:

1. through setting up end pipe and flange swing joint together, and what the junction adopted is the arc head, still install the telescopic cylinder in the inboard of end pipe simultaneously, compare in prior art, when the pipeline at expansion joint tip receives to rotate or torsional force can drive the flange dish and produce the rotation of certain angle along arc groove and arc head and adapt to, just so avoid corrugated metal pipe can receive the influence that torsional force or shaking force brought, thereby its life has been improved, two telescopic cylinder tip that set up in the end pipe simultaneously still cup joint each other, directly separate between inside section of ventilating and the corrugated metal pipe, effectively avoid the impurity in the waste gas directly to adhere to the corrugated metal pipe internal surface, reduce its influence condition that receives waste gas, further improve corrugated metal pipe's life, thereby make the whole life of expansion joint more of a specified duration, the quality is better.

2. Compared with the prior art, the length between the two end pipes can be changed by rotating the threaded sleeve, the pressure relief rod is opened to drive the adjusting piston to slide up and down according to atmospheric pressure so as to adapt to and adjust the hydraulic pressure in the end pipes and the hydraulic holes to be in a stable state, the fixed installation can be carried out when the threaded sleeve is adjusted to drive the flange plate to abut against a pipeline, then the pressure relief rod is screwed to limit the position of the adjusting piston, so that the hydraulic pressures in the hydraulic annular cavity, the hydraulic grooves, the adjusting holes and the hydraulic holes are in a stable state, the installation mode can not cause the metal corrugated pipe to be stretched or compressed during installation, and the compensation length during working can be ensured, and the first telescopic cylinder and the second telescopic cylinder inside synchronously extend and retract to further play a role in protection, and the expansion joint is more beneficial to work.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a front sectional view of the structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a half sectional view of the internal structure of the present invention;

FIG. 5 is an overall half-sectional view of the structure of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 8 is an enlarged view at C of FIG. 2;

fig. 9 is an enlarged view of fig. 4 at D.

In the figure: 1. an end tube; 101. a thread groove; 102. a hydraulic ring cavity; 103. a hydraulic tank; 104. an adjustment hole; 2. a flange plate; 201. an arc groove; 3. a bracket screw; 4. a threaded sleeve; 5. a metal bellows; 6. an arc-shaped head; 7. a rubber sleeve; 8. a first telescopic cylinder; 9. a second telescopic cylinder; 901. a chute; 10. a piston top block; 11. a spring; 12. a hydraulic bore; 13. a pressure relief lever; 14. the piston is adjusted.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-5 and 8, an exhaust device for a ship engine comprises two end pipes 1, wherein a flange 2 is movably arranged on the outer side of each end pipe 1, a support screw 3 is connected between the outer rings of the end pipes 1 in a threaded manner, an arc groove 201 is formed in one side, close to each end pipe 1, of each flange 2, an arc head 6 movably sleeved in the arc groove 201 is fixedly arranged on one side, close to each flange 2, of each end pipe 1, a threaded groove 101 is formed in the inner side of each end pipe 1 in an annular manner, a threaded sleeve 4 is movably sleeved in each threaded groove 101, a metal corrugated pipe 5 is fixedly connected between the threaded sleeves 4, a rubber sleeve 7 is fixedly connected to the positions, located at the outer rings of the arc heads 6, of each end pipe 1 and each flange 2, a first telescopic cylinder 8 is fixedly arranged at the position, located at the inner part of the metal corrugated pipe 5, of the side of each end pipe 1 is fixedly arranged at the right end, a second telescopic cylinder 9 is fixedly arranged at the position, located at the inner part of the metal corrugated pipe 5, of the side of each end pipe 1, the middle part of the second telescopic cylinder 9 is provided with a sliding groove 901, the end part of the first telescopic cylinder 8 is movably sleeved inside the sliding groove 901, the flange 2 can rotate under the state that the end pipe 1 is integrally kept stable by arranging an end pipe 1 and a flange 2 in movable connection, on one hand, the movable connection is in a mode that an arc-shaped head 6 is sleeved with an arc groove 201, on the other hand, the movable connection is convenient for the movable connection of the flange 2 and a pipeline, on the other hand, the damage of an expansion joint caused by the torsion force between the flange 2 and the end pipe 1 can be avoided, so that the service life is reduced, the arc groove 201 and the arc-shaped head 6 are movably sleeved, hydraulic oil is filled between the arc-shaped head 6 and the arc groove 201, the rubber sleeve 7 is made of high-temperature resistant materials, the length of a gap between the end pipe 1 and the flange 2, which is positioned outside the arc-shaped head 6, is smaller than the length of the arc-shaped head 6 sleeved inside the arc groove 201, like this compare in end pipe 1 in flange plate 2 and take place certain rotation or twist reverse the time can not cause arc head 6 to come out from the landing in arc groove 201, and the leakproofness can be guaranteed to the inside hydraulic pressure of cooperation, just so make the inside normal circulation waste gas of flange plate 2 can not produce the leakage, rubber sleeve 7 has still been set up between end pipe 1 and flange dish 2 simultaneously, play sealed effect on the one hand, on the other hand also can play certain guard action to arc head 6 and arc groove 201 cup joints the department, avoid impurity to drop to the clearance department of end pipe 1 and flange dish 2.

Referring to the attached drawings 2-9, a hydraulic groove 103 is formed in the end pipe 1 at the innermost circle of the thread groove 101, a piston top block 10 is movably sleeved in the hydraulic groove 103, a spring 11 is fixedly connected between the bottom of the piston top block 10 and the bottom wall of the hydraulic groove 103, an annular hydraulic ring cavity 102 is formed in the joint of the end pipe 1 and the first telescopic cylinder 8 and the second telescopic cylinder 9, the bottom of the hydraulic ring cavity 102 is communicated with the bottom of the hydraulic groove 103, hydraulic holes 12 are uniformly formed in the ring positions of the first telescopic cylinder 8 and the second telescopic cylinder 9, the hydraulic holes 12 are communicated with the hydraulic ring cavity 102, the first telescopic cylinder 8 and the second telescopic cylinder 9 are movably sleeved to perform certain expansion, so that the distance between the two end pipes 1 can be conveniently adjusted and maintained when the expansion joint is installed, and hydraulic oil in the sliding groove 901 is communicated with the hydraulic ring cavities 102 at the two ends through the hydraulic holes 12, the piston top block 10 is conveniently pushed out to limit the threaded sleeve 4, the adjusting hole 104 is formed in the side, close to the arc-shaped head 6, of the right end pipe 1, the top thread of the adjusting hole 104 is sleeved with the pressure relief rod 13, the adjusting piston 14 is movably sleeved in the adjusting hole 104, the bottom of the adjusting hole 104 is communicated with the bottom of the hydraulic groove 103, when the pressure relief rod 13 is loosened, the adjusting hole 104 is communicated with the external air pressure, at the moment, the balance is realized under the action of the atmospheric pressure and the hydraulic pressure at the bottom of the adjusting hole 104, so that the height position of the adjusting piston 14 is adjusted, after the adjustment is finished, the pressure relief rod 13 is screwed to limit the adjusting piston 14 to prevent the adjusting piston from sliding upwards, so that the hydraulic pressure in the hydraulic ring cavity 102 and the hydraulic groove 103 is kept constant, and the hydraulic pressure in the sliding groove 901 and the hydraulic hole 12 is kept constant under the condition that the piston top block 10 is limited by the threaded sleeve 4, and the change of the stretching length of the first telescopic cylinder 8 and the second telescopic cylinder 9 brought by the stable hydraulic pressure when the temperature rises is exactly equal to the change of the stretching length of the metal corrugated pipe 5, the end part of the threaded sleeve 4 and the end part of the piston top block 10 are both in the shape of an inclined plane, the inclined angles of the two are just meshed, the direction of the threaded meshing of the threaded sleeve 4 in the two threaded grooves 101 is opposite, so that the threaded sleeve 4 and the metal corrugated pipe 5 are driven to integrally rotate when the threaded sleeve 4 rotates, the threaded sleeves 4 at the two ends are both screwed outwards or inwards from the threaded grooves 101, the simultaneous adjustment of the two ends can be realized when the expansion joint is installed, the stress or working uniformity of the expansion joint is further facilitated after the installation, the sliding groove 901 is filled with hydraulic oil in the hydraulic hole 12 and keeps sliding sealed sleeve joint, and the sliding groove 901, the hydraulic hole 12, the threaded groove 101, the hydraulic groove 103 and the adjusting hole 104 keep a sealed communication state, the pressure relief rod 13 is sleeved with the port of the adjusting hole 104 through threads, the bottom of the pressure relief rod 13 is kept in abutting contact with the adjusting piston 14 after the expansion joint is installed, mutual limitation is performed through hydraulic pressure and threads, so that the pressure relief rod 13 is firstly unscrewed when the expansion joint is installed, meanwhile, the thread bush 4 is also screwed to the innermost part of the thread groove 101, because the distance between the two end pipes 1 is shortest, the position between pipelines can be conveniently placed, then the thread bush 4 is rotated to drive the metal corrugated pipe 5 to synchronously rotate, the thread bush 4 can move to a certain position towards the outside of the thread groove 101 to just drive the flange plates 2 at two ends to abut against the pipelines, at the moment, the flange plates 2 and the pipelines can be fixedly connected, meanwhile, the piston jacking block 10 slides to a certain distance towards the outside of the hydraulic groove 103 under the action of the spring 11, and simultaneously, the adjusting piston 14 is driven to slide towards the bottom of the adjusting hole 104 according to the fluidity of internal hydraulic pressure, after the flange plate 2 is installed, the pressure relief rod 13 is screwed down again and abuts against the top of the adjusting piston 14, and the hydraulic pressure in the hydraulic groove 103 and the hydraulic annular cavity 102 is ensured to be in a stable state.

According to the working principle, during installation, the pressure release rod 13 is firstly unscrewed, the threaded sleeve 4 is screwed to the innermost part of the threaded groove 101, the piston top block 10 is abutted to the bottom of the hydraulic groove 103, the distance between the two end pipes 1 is shortest, the position between the pipelines can be conveniently placed, after the threaded sleeve 4 is placed, the threaded sleeve 4 is rotated to drive the metal corrugated pipe 5 to synchronously rotate, the threaded sleeve 4 can move to a certain position outside the threaded groove 101, at the moment, the length between the threaded sleeve 4 and the metal corrugated pipe 5 located between the two end pipes 1 is lengthened, the end pipes 1 can be driven to move to the two ends, the flange plates 2 are abutted to the pipelines, and the flange plates 2 can be fixedly connected with the end parts of the pipelines;

meanwhile, when the thread bushing 4 slides towards the outside of the thread groove 101, the piston top block 10 slides a certain distance towards the outside of the hydraulic groove 103 under the action of the spring 11, the lengths of the first telescopic cylinder 8 and the second telescopic cylinder 9 are also stretched, the adjusting piston 14 is driven to slide towards the bottom of the adjusting hole 104 according to the hydraulic fluidity, after the flange plate 2 and the pipeline are installed, the pressure relief rod 13 is screwed down, the bottom of the pressure relief rod is abutted to the top of the adjusting piston 14, and finally, the nut on the outer ring of the support screw rod 3 is screwed down, so that the installation of the expansion joint is completed.

Can drive first flexible section of thick bamboo 8, the flexible section of thick bamboo 9 of second and corrugated metal pipe 5's of stretching out and drawing back when waste gas enters into the expansion joint from one end and carry out the axial regulation to impurity in the waste gas also can not fall on corrugated metal pipe 5 inner circle, can drive ring flange 2 along the regulation of arc 6 slip when the rotation in other directions or the torsional condition appear in expansion joint tip department simultaneously, thereby can not increase its life on corrugated metal pipe 5.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An exhaust apparatus for a marine engine, comprising two end pipes (1), characterized in that: the outer side of the end pipe (1) is movably provided with a flange plate (2), a support screw rod (3) is in threaded connection between the outer rings of the end pipe (1), an arc groove (201) is formed in one side, close to the end pipe (1), of the flange plate (2), an arc head (6) which is movably sleeved in the arc groove (201) is fixedly arranged on one side, close to the flange plate (2), of the end pipe (1), a thread groove (101) is formed in the inner side of the end pipe (1) in an annular shape, a thread sleeve (4) is movably sleeved in the thread groove (101), a metal corrugated pipe (5) is fixedly connected between the thread sleeves (4), a rubber sleeve (7) is fixedly connected at the position, located on the outer ring of the arc head (6), of the end pipe (1) and the flange plate (2), a first telescopic cylinder (8) is fixedly arranged at the position, located on the side edge of the end pipe (1), located on the inner side of the metal corrugated pipe (5), the left end the end pipe (1) side is located inside fixed mounting of corrugated metal pipe (5) and is had a flexible section of thick bamboo of second (9), spout (901) have been seted up at flexible section of thick bamboo of second (9) middle part, the tip activity of a flexible section of thick bamboo (8) is cup jointed inside spout (901).

2. The exhaust device for a marine engine according to claim 1, characterized in that: the hydraulic pressure groove (103) is formed in the innermost position of the threaded groove (101) in the end pipe (1), a piston top block (10) is movably sleeved in the hydraulic pressure groove (103), a spring (11) is fixedly connected between the bottom of the piston top block (10) and the bottom wall of the hydraulic pressure groove (103), an annular hydraulic pressure ring cavity (102) is formed in the end pipe (1) and the connecting position of the first telescopic cylinder (8) and the second telescopic cylinder (9), the bottom of the hydraulic pressure ring cavity (102) is communicated with the bottom of the hydraulic pressure groove (103), hydraulic pressure holes (12) are formed in the middle ring positions of the first telescopic cylinder (8) and the second telescopic cylinder (9) in an annular mode, and the hydraulic pressure holes (12) are communicated with the hydraulic pressure ring cavity (102).

3. The exhaust device for a marine engine according to claim 2, characterized in that: the right-hand member end pipe (1) is close to the inside of arc head (6) one side and has been seted up regulation hole (104), the top screw thread of regulation hole (104) has cup jointed pressure release pole (13), the inside activity of regulation hole (104) has cup jointed adjusting piston (14), the bottom of regulation hole (104) and the bottom intercommunication of hydraulic pressure groove (103).

4. The exhaust device for a marine engine according to claim 1, characterized in that: arc groove (201) all are the spherical arc groove activity with arc head (6) and cup joint, contain hydraulic oil between arc head (6) and arc groove (201) inside, rubber sleeve (7) adopt high temperature resistant material to make.

5. The exhaust device for a marine engine according to claim 2, characterized in that: the cross sections of the end part of the threaded sleeve (4) and the end part of the piston top block (10) are inclined plane-shaped, the inclined angles of the inclined planes of the end part of the threaded sleeve and the piston top block are just meshed, and the thread meshing directions of the threaded sleeve (4) in the two thread grooves (101) are opposite.

6. The exhaust device for a marine engine according to claim 3, characterized in that: the hydraulic expansion joint is characterized in that the sliding groove (901) and the hydraulic hole (12) are filled with hydraulic oil and are kept in sliding sealing sleeve connection, the sliding groove (901), the hydraulic hole (12), the thread groove (101), the hydraulic groove (103) and the adjusting hole (104) are kept in a sealing and communicating state, the pressure relief rod (13) is in threaded sleeve connection with the port of the adjusting hole (104), and the bottom of the pressure relief rod (13) is kept in abutting contact with the adjusting piston (14) after the expansion joint is installed.