CN112747188A

CN112747188A - Novel starting air buffering device

Info

Publication number: CN112747188A
Application number: CN201911035176.XA
Authority: CN
Inventors: 王凯; 陆海刚; 冯梓怡
Original assignee: Hudong Heavy Machinery Co Ltd
Current assignee: Hudong Heavy Machinery Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2021-05-04

Abstract

The invention discloses a novel starting air buffer device which is connected to a starting air pipe and comprises a valve shell, a valve plate, a valve seat and an elastic piece, wherein the valve seat is connected to the starting air pipe, the valve shell is connected to the valve seat, the valve plate and the elastic piece are arranged in the valve shell, the elastic piece is connected with the valve plate and the valve shell, and a discharge hole is formed in the valve shell. The invention discloses a novel starting air buffer device. The buffer device is composed of an elastic piece, a valve shell, a valve seat and a valve plate, wherein the valve plate is propped against the valve seat. When starting air pressure is too big, the elastic part can contract, and the valve block is opened, and can produce certain space between the disk seat, and the air gets into buffer's valve casing through this space to get into the atmosphere through the bleed hole on the valve casing, can effectively play the cushioning effect.

Description

Novel starting air buffering device

Technical Field

The invention relates to the field of marine low-speed diesel engines, which can be generally applied to pipelines of starting air systems of low-speed diesel engines, in particular to a novel starting air buffer device.

Background

The low speed diesel engine for ship is started by pumping high pressure air into the cylinder liner in the firing order. The piston is pushed to move by high-pressure air, and the main machine is started. When starting air enters at 30bar, in order to avoid that parts inside the air pipe are subjected to excessive pressure, the parts fly out and even explode, a buffering pressure reduction device needs to be added on the starting air pipeline.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a novel starting air buffer device which can buffer and reduce pressure and solve the technical problems.

The purpose of the invention is realized by adopting the following technical scheme:

the utility model provides a novel start air buffer, connects on starting the air pipe, includes valve casing, valve block, disk seat and elastic component, the disk seat is connected on starting the air pipe, the valve casing connect in on the disk seat, valve block and elastic component set up in the valve casing, valve block and valve casing are connected to the elastic component, be provided with the bleeder hole on the valve casing.

Through adopting above-mentioned technical scheme, at the start air pipe tip assembly buffer. The buffer device is composed of an elastic piece, a valve shell, a valve seat and a valve plate, wherein the valve plate is propped against the valve seat. When starting air pressure is too big, the elastic part can contract, and the valve block is opened, and can produce certain space between the disk seat, and the air gets into buffer's valve casing through this space to get into the atmosphere through the bleed hole on the valve casing, can effectively play the cushioning effect.

As a further improvement of the invention, the valve seat is centrally provided with a through hole which is arranged concentrically with the priming air tube. Through adopting above-mentioned technical scheme, the through-hole is concentric with the hollow tube that starts, is favorable to the air current direct action to be located the valve block at disk seat rear portion, is favorable to high-efficient buffering.

As a further improvement of the invention, a first chamfer part is arranged on the outer edge of one side, close to the valve seat, of the valve plate, and a second chamfer part is arranged on the outer edge of one side, close to the valve plate, of the central through hole of the valve seat. Through adopting above-mentioned technical scheme, the setting of two chamfer portions is favorable to the reliable contact of valve block and disk seat, is favorable to sealing on the one hand, and on the other hand is favorable to leaning on, plays effectively spacingly to the valve block.

As a further improvement of the invention, a first mounting hole is arranged on the position of the valve shell close to the outer edge, and the first mounting hole and the discharge hole are located on the same circumferential position. Through adopting above-mentioned technical scheme, first mounting hole is used for being connected through the fastener between valve casing and the valve seat, makes both connect reliably.

As a further improvement of the invention, the first mounting hole and the bleed hole are spaced apart. Through adopting above-mentioned technical scheme, neither hinder the reliable connection of valve casing and disk seat, also be favorable to losing air the exhaust, play the cushioning effect.

As a further improvement of the invention, the valve casing is provided with a bulge, one side of the bulge is provided with an opening, the other side of the bulge is provided with a closed bottom shell, a cavity is arranged in the bulge, and the valve plate and the elastic piece are arranged in the cavity. The elastic piece sets up in the cavity, and the valve block also is located the cavity, is favorable to the removal of valve block, and the elastic piece can reliably support to lean on the valve block to play and carry out the cushioning effect to starting air.

As a further improvement of the invention, the bottom shell is conical or arched in a circular arc shape. Through adopting above-mentioned technical scheme, be favorable to elastic component especially disk spring's reliable installation and support to lean on, make its effective contact, also be favorable to processing simultaneously.

As a further improvement of the present invention, a second mounting hole and a third mounting hole are arranged on the valve seat along the circumferential direction, the second mounting hole and the third mounting hole are uniformly distributed on the valve seat, and the second mounting hole is located at the periphery of the third mounting hole. By adopting the technical scheme, the second mounting hole is positioned at the periphery of the third mounting hole, the second mounting hole is used for connecting the fastening piece between the valve seat and the valve shell, the third mounting hole is used for starting the connection between the air pipe and the valve seat through the fastening piece, and the third mounting hole and the valve seat are arranged in a staggered mode, so that the connection between the components is firm and not obstructed, and the connection strength is ensured.

As a further improvement of the invention, the angle between the connecting line of the second mounting hole to the center of the valve seat and the connecting line of the adjacent third mounting hole to the center of the valve seat ranges from 15 degrees to 30 degrees. Through adopting above-mentioned technical scheme, the number of second mounting hole and third mounting hole can set up according to actual demand, and when the equipartition was on the disk seat, the setting of contained angle scope was favorable to connecting firmly between each part.

As a further improvement of the invention, the elastic member is a disc spring. Through adopting above-mentioned technical scheme, be favorable to reliable of valve block to support and effectively reset.

Compared with the prior art, the invention has the beneficial effects that: after adopting this application scheme, can effectively reduce the inside shock of starting air pipe and strike to avoid because the too big explosion that causes of starting air pressure and the danger that splashes.

Drawings

FIG. 1 is a schematic view of a novel start air buffer assembly according to one embodiment of the present invention;

FIG. 2 is a schematic view of a valve housing structure of the novel starting air buffer device according to an embodiment of the present invention;

FIG. 3 is a partial front elevational view of a valve housing of the novel starting air buffer assembly in accordance with one embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a valve plate of the novel start air buffer device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a valve seat of the novel starting air buffer device according to an embodiment of the present invention;

fig. 6 is a sectional view taken along line a-a of fig. 5.

In the figure: 1. a valve housing; 2. a valve plate; 3. a valve seat; 4. starting an air pipe; 5. a disc spring; 6. a fastener; 11. a first mounting hole; 12. a projection; 13. a shell bottom; 14. a cavity; 21. a pressure-bearing portion; 22. a first chamfered portion; 31. a second mounting hole; 32. a third mounting hole; 33. a step portion; 34. a second chamfered portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The utility model provides a novel start air buffer, refers to and shows 1 to 6, connects on starting air pipe 4, including valve casing 1, valve block 2, disk seat 3 and elastic component, and disk seat 3 connects on starting air pipe 4, and valve casing 1 connects on disk seat 3, and valve block 2 and elastic component set up in valve casing 1, and valve block 2 and valve casing 1 are connected to the elastic component, have seted up the bleeder hole on the valve casing 1.

The start air end flange may be eliminated and replaced by a buffer mounted at the end of the start air tube. And the buffer device is internally provided with a spring structure, namely an elastic piece, when the buffer device is subjected to overpressure, the elastic piece contracts, the valve plate is opened, and air is discharged.

The center of the valve seat 3 is provided with a through hole which is concentrically arranged with the starting air pipe 4. The outer edge of one side of the valve plate 2 close to the valve seat 3 is provided with a first chamfer portion 22, and the outer edge of one side of the central through hole of the valve seat 3 close to the valve plate 2 is provided with a second chamfer portion 34. The other side of the valve plate 2 is a pressure-bearing part 21. The valve casing 1 is provided with a first mounting hole 11 at a position close to the outer edge, and the first mounting hole 11 and the bleed hole are located at the same circumferential position. The first mounting hole 11 and the bleed hole are spaced apart. The valve seat 3 is provided with a step 33 on the side closer to the valve housing 1.

The valve casing 1 is provided with a protruding part 12, one side of the protruding part 12 is open, the other side is a closed bottom shell 13, a cavity 14 is arranged in the protruding part 12, and the elastic part is arranged in the cavity 14.

The bottom shell 13 is tapered, and in other embodiments, may be arched.

The valve seat 3 is provided with a second mounting hole 31 and a third mounting hole 32 along the circumferential direction, the second mounting hole 31 and the third mounting hole 32 are uniformly distributed on the valve seat, and the second mounting hole 31 is located on the periphery of the third mounting hole 32. The valve seat 3 is connected with the valve housing 1 through a fastener 6, and the fastener 6 is arranged in the first mounting hole 11 and the second mounting hole 31 in a penetrating mode. The valve seat 3 is connected with the starting air pipe 4 through a fastener, and the fastener is arranged in the third starting air pipe and the third mounting hole 32 in a penetrating mode.

The angle between the line from the second mounting hole 31 to the center of the valve seat 3 and the line from the adjacent third mounting hole 32 to the center of the valve seat 3 is in the range of 15 degrees to 30 degrees, preferably 22.5 degrees. The elastic member is a disc spring 5.

When installed, the damper is fitted to the end of the primer air tube 4 in accordance with the assembly view of the damper shown in fig. 1. Through 16 threaded holes (i.e., third mounting holes) in the valve seat 3 for connecting the priming air tube to the valve seat. The damping device requires adjustment of the disk spring 5 before installation. As can be seen from the valve housing 1 in fig. 3, the valve housing 1 has 16 through-holes, of which 8 are first mounting holes and 8 are bleed holes through which bleed air can escape.

To sum up, a novel start air buffer in this application installs in low-speed diesel engine start air pipe end portion, reduces the impact to the tip flange at the start air stage of admitting air through inside belleville spring's extending structure, prevents effectively that the tip flange from bearing too big impact, prevents the tip flange departure, avoids the bodily injury etc. that probably cause. The purpose of reducing the internal pressure of the starting air pipe is achieved by releasing air through overpressure. The internal pressure of the whole starting air is stabilized to prevent explosion.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a novel start air buffer, connects on starting air pipe (4), its characterized in that, including valve casing (1), valve block (2), disk seat (3) and elastic component, disk seat (3) are connected on starting air pipe (4), valve casing (1) connect in on the disk seat (3), valve block (2) and elastic component set up in valve casing (1), valve block (2) and valve casing (1) are connected to the elastic component, be provided with the bleeder hole on the valve casing.

2. A new starting air buffer device according to claim 1, characterized in that the valve seat (3) is centrally provided with a through hole, which is arranged concentrically with the starting air tube (4).

3. A novel starting air buffer device as claimed in claim 2, characterized in that the valve plate (2) is provided with a first chamfer (22) at the outer edge of the side close to the valve seat (3), and the valve seat (3) is provided with a second chamfer (34) at the outer edge of the side close to the valve plate (2) of the central through hole.

4. A new starting air cushioning device according to claim 1, characterized in that said valve housing (1) is provided with a first mounting hole (11) near the outer edge, said first mounting hole (11) and said bleed hole being located at the same circumferential position.

5. A new starting air buffer device according to claim 1, characterised in that said first mounting hole (11) and bleed hole are spaced apart.

6. A novel starting air buffer device according to claim 4 or 5, characterized in that the valve housing (1) is provided with a protrusion (12), one side of the protrusion (12) is open, the other side is a closed bottom shell (13), a cavity (14) is arranged in the protrusion (12), and the elastic member is arranged in the cavity (14).

7. A new starting air buffer according to claim 6, characterized in that said bottom shell (13) is conical or arched in a circular arc.

8. The novel starting air buffer device as claimed in claim 1, characterized in that a second mounting hole (31) and a third mounting hole (32) are arranged on the valve seat (3) along the circumferential direction, the second mounting hole (31) and the third mounting hole (32) are uniformly distributed on the valve seat, and the second mounting hole (31) is arranged at the periphery of the third mounting hole (32).

9. A novel starting air buffer device according to claim 8, characterized in that the angle between the line from the second mounting hole (31) to the center of the valve seat (3) and the line from the adjacent third mounting hole (32) to the center of the valve seat (3) is in the range of 15 degrees to 30 degrees.

10. A new starting air buffer device according to any of claims 1-9, characterized in that said elastic member is a disc spring (5).