CN219242733U

CN219242733U - Explosion-proof relief valve, diesel engine and boats and ships

Info

Publication number: CN219242733U
Application number: CN202320722823.XU
Authority: CN
Inventors: 王鹏鹏; 何世桂; 葛宇
Original assignee: China Shipbuilding Power Engineering Institute Co Ltd
Current assignee: China Shipbuilding Power Engineering Institute Co Ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-06-23
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses an explosion-proof safety valve, a diesel engine and a ship, wherein the explosion-proof safety valve comprises a valve seat and an elastic sealing assembly, and the valve seat is provided with an opening; the elastic sealing assembly comprises a sealing plate, an air bag and a sealing cover, the sealing plate is arranged on the valve seat and can seal the opening, the air bag is arranged on the sealing plate, and the sealing cover is detachably connected to the valve seat and can elastically press the air bag on the sealing plate. This explosion-proof relief valve can satisfy the leakproofness when the medium in the disk seat is applyed in the effort of closing plate and is less than the gasbag and applys in the effort of closing plate, can satisfy the security when the medium in the disk seat is applyed in the effort of closing plate and is greater than the gasbag, and simple structure, the processing of being convenient for has effectively reduced processing cost.

Description

Explosion-proof relief valve, diesel engine and boats and ships

Technical Field

The utility model relates to the technical field of ships, in particular to an explosion-proof safety valve, a diesel engine and a ship.

Background

In order to prevent explosion phenomena of a crank case caused by ignition and overhigh pressure, each cylinder of the marine diesel engine is provided with a safety explosion-proof valve, wherein the safety explosion-proof valve is an automatic valve, and when the system pressure is greater than the limit pressure, a certain amount of medium is discharged by utilizing the force of the medium so as to prevent the pressure in the system from exceeding the preset limit pressure; when the pressure returns to normal, the valve will close again to prevent further flow of medium.

At present, a safety valve of a marine diesel engine in the prior art mainly adopts a spring valve plate type safety explosion-proof valve. The spring valve plate type safety explosion-proof valve has the advantages of poor sealing performance, high processing difficulty, high manufacturing cost and poor reliability.

Disclosure of Invention

The utility model aims to provide an explosion-proof safety valve, a diesel engine and a ship, which are used for solving the problems of poor tightness, high processing difficulty, high manufacturing cost and poor reliability of a spring valve sheet type safety explosion-proof valve in the prior art.

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

an explosion protection safety valve, comprising:

the valve seat is provided with an opening;

the elastic sealing assembly comprises a sealing plate, an air bag and a sealing cover, wherein the sealing plate is covered on the valve seat and can seal the opening, the air bag is arranged on the sealing plate, and the sealing cover is detachably connected with the valve seat and can elastically press the air bag on the sealing plate.

Preferably, the elastic sealing assembly further comprises a ventilation flame-retardant assembly, the ventilation flame-retardant assembly is sleeved on the periphery of the air bag and is distributed with the air bag at intervals, the ventilation flame-retardant assembly is located between the valve seat and the sealing cover, the sealing plate, the air bag, the ventilation flame-retardant assembly and the sealing cover form a cavity, and the ventilation flame-retardant assembly is configured to enable a medium in the cavity to pass through the ventilation flame-retardant assembly.

Preferably, the venting flame retardant assembly comprises a plurality of flame retardant sheets stacked in sequence.

Preferably, the explosion-proof safety valve further comprises a plurality of connecting assemblies distributed at intervals along the circumferential direction of the sealing cover, wherein each connecting assembly comprises a screw and a sealing gasket, and the screw sequentially penetrates through the sealing gasket and the sealing cover and is in threaded connection with the valve seat.

Preferably, the valve seat is embedded with a sealing ring, and the sealing ring is used for sealing a gap between the sealing plate and the valve seat.

Preferably, the central axis of the opening, the central axis of the sealing plate, the central axis of the air bag and the central axis of the cover are all collinear.

Preferably, the air bag comprises an air bag body, an inflating valve arranged on the air bag body, and a cover cap covered on the inflating valve, wherein the cover cap is also provided with a valve hole, and the inflating valve can be inserted into the valve hole.

Preferably, the sealing plate is provided with a first limiting ring, and the air bag is positioned in the first limiting ring.

The diesel engine comprises the explosion-proof safety valve, and the valve seat is a shell of the diesel engine.

A marine vessel comprising a diesel engine as described above.

The utility model has the beneficial effects that:

the utility model aims to provide an explosion-proof safety valve, a diesel engine and a ship, wherein the explosion-proof safety valve comprises a valve seat and an elastic sealing assembly, an opening is formed in the valve seat, a sealing plate is arranged on an upper cover of the opening, an air bag is arranged on the sealing plate, the sealing cover is detachably connected with the valve seat and can elastically press the air bag on the sealing plate, the air bag is always in a compressed state, and the sealing plate is pressed on the valve seat by the air bag, so that the opening can be effectively sealed by the sealing plate. Specifically, when the acting force of the medium in the valve seat applied to the sealing plate is smaller than the acting force of the air bag applied to the sealing plate, the opening is effectively sealed by the sealing plate, and the medium in the valve seat is effectively prevented from leaking; when the acting force of the medium in the valve seat applied to the sealing plate is larger than the acting force of the air bag applied to the sealing plate, the acting force of the medium in the valve seat applied to the sealing plate pushes the sealing plate away, the medium flows out from the gap between the sealing plate and the valve seat, and the opening is sealed by the sealing plate again until the acting force of the medium in the valve seat applied to the sealing plate is smaller than the acting force of the air bag applied to the sealing plate again.

Therefore, the explosion-proof safety valve can meet the sealing performance when the acting force of the medium in the valve seat applied to the sealing plate is smaller than the acting force of the air bag applied to the sealing plate, and can meet the safety when the acting force of the medium in the valve seat applied to the sealing plate is larger than the acting force of the air bag applied to the sealing plate.

Drawings

Fig. 1 is a schematic structural view of an explosion-proof safety valve according to an embodiment of the present utility model.

In the figure:

1. a valve seat; 11. an opening; 12. a second limiting ring;

21. a sealing plate; 211. a first stop collar; 22. an air bag; 221. an airbag body; 222. an inflating valve; 23. a cover; 231. a limit edge;

3. a venting flame retardant assembly;

4. a connection assembly; 41. a screw; 42. a sealing gasket;

5. and (3) sealing rings.

Detailed Description

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

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The utility model provides an explosion-proof safety valve, as shown in figure 1, which comprises a valve seat 1 and an elastic sealing component 2, wherein the valve seat 1 is provided with an opening 11; the elastic sealing assembly 2 comprises a sealing plate 21, an air bag 22 and a sealing cover 23, wherein the sealing plate 21 is covered on the valve seat 1 and can seal the opening 11, the air bag 22 is arranged on the sealing plate 21, and the sealing cover 23 is detachably connected with the valve seat 1 and can elastically press the air bag 22 on the sealing plate 21.

This explosion-proof relief valve is provided with opening 11 on the disk seat 1, and opening 11 upper cover is equipped with closing plate 21, is provided with gasbag 22 on the closing plate 21, and closing cap 23 can dismantle and connect in disk seat 1 and can compress tightly gasbag 22 elasticity in closing plate 21, and it is understood that closing cap 23, gasbag 22, closing plate 21 and disk seat 1 distribute in proper order along the direction of height of explosion-proof relief valve, and gasbag 22 is in compression throughout, and gasbag 22 compresses tightly closing plate 21 in disk seat 1 for closing plate 21 can effectively seal opening 11. Specifically, when the force applied to the sealing plate 21 by the medium in the valve seat 1 is smaller than the force applied to the sealing plate 21 by the air bag 22, the sealing plate 21 effectively seals the opening 11, effectively preventing the medium in the valve seat 1 from leaking; when the force of the medium in the valve seat 1 applied to the sealing plate 21 is greater than the force of the air bag 22 applied to the sealing plate 21, the force of the medium in the valve seat 1 applied to the sealing plate 21 pushes the sealing plate 21 away, and the medium flows out from the gap between the sealing plate 21 and the valve seat 1 until the force of the medium in the valve seat 1 applied to the sealing plate 21 is again smaller than the force of the air bag 22 applied to the sealing plate 21, and the sealing plate 21 reseals the opening 11.

Therefore, the explosion-proof safety valve can meet the sealing performance when the acting force of the medium in the valve seat 1 applied to the sealing plate 21 is smaller than the acting force of the air bag 22 applied to the sealing plate 21, and can meet the safety when the acting force of the medium in the valve seat 1 applied to the sealing plate 21 is larger than the acting force of the air bag 22 applied to the sealing plate 21.

Wherein, the elastic sealing component 2 further comprises a ventilation flame-retardant component 3, the ventilation flame-retardant component 3 is sleeved on the periphery of the air bag 22 and is distributed with the air bag 22 at intervals, the ventilation flame-retardant component 3 is positioned between the valve seat 1 and the sealing cover 23, the sealing plate 21, the air bag 22, the ventilation flame-retardant component 3 and the sealing cover 23 form a cavity, and the ventilation flame-retardant component 3 is configured to enable a medium in the cavity to pass through the ventilation flame-retardant component 3. It can be understood that when the medium in the valve seat 1 is high-temperature high-pressure gas, and the acting force of the medium in the valve seat 1 applied to the sealing plate 21 is larger than the acting force of the air bag 22 applied to the sealing plate 21, the high-temperature high-pressure gas flows out to the cavity from the gap between the sealing plate 21 and the valve seat 1 and flows out to the outside from the cavity, and the ventilation flame-retardant component 3 has a flame-retardant effect, so that the surrounding environment can be prevented from being ignited by the high-temperature high-pressure gas, and the service performance of the explosion-proof safety valve can be further improved.

Specifically, the vent flame retardant assembly 3 includes a plurality of flame retardant sheets stacked in sequence. It can be understood that when the medium in the valve seat 1 is high-temperature high-pressure gas, and the acting force of the medium in the valve seat 1 applied to the sealing plate 21 is larger than the acting force of the air bag 22 applied to the sealing plate 21, the high-temperature high-pressure gas flows out to the cavity from the gap between the sealing plate 21 and the valve seat 1, and flows out to the outside from the gap between any two adjacent flame retardant sheets, and the medium enters the cavity to contact with the flame retardant sheets and flows through the gap between any two adjacent flame retardant sheets, so that the flame retardant sheets can resist the high-temperature high-pressure gas, thereby improving the service performance of the explosion-proof safety valve.

Wherein, the explosion-proof safety valve further comprises a plurality of connecting assemblies 4 which are distributed at intervals along the circumferential direction of the sealing cover 23, the connecting assemblies 4 comprise screws 41 and sealing gaskets 42, and the screws 41 sequentially penetrate through the sealing gaskets 42 and the sealing cover 23 and are in threaded connection with the valve seat 1. So arranged as to realize the valve seat 1 to which the cover 23 is detachably attached, and secondly, the urging force of the cover 23 to the air bag 22 is adjustable by adjusting the number of turns of the screw 41, thereby pressing the air bag 22 against the sealing plate 21.

Specifically, the sealing plate 21 is made of a metal material. The structural strength and the service life of the sealing plate 21 can be improved.

Wherein, valve seat 1 inlays and is equipped with sealing washer 5, and sealing washer 5 is used for sealing the clearance between valve seat 1 and closing plate 21. By providing the seal ring 5, the seal ring 5 and the seal plate 21 form redundancy protection, and when the force applied to the seal plate 21 by the medium in the valve seat 1 is smaller than the force applied to the seal plate 21 by the air bag 22, the medium in the valve seat 1 can be further prevented from flowing out from the opening 11.

Wherein the central axis of the opening 11, the central axis of the sealing plate 21, the central axis of the air bag 22 and the central axis of the cover 23 are all collinear. So that the force applied to the air bag 22 by the cover 23 and the sealing plate 21 by the air bag 22 is uniform, thereby further improving the usability of the explosion-proof safety valve.

The air bag 22 includes an air bag body 221, an inflating valve 222 disposed on the air bag body 221, and a cap covering the inflating valve 222, the cover 23 is further provided with a valve hole, and the inflating valve 222 can be inserted into the valve hole. The air bag 22 is convenient to be inflated, the air bag 22 is convenient to be deflated, and the setting position of the air bag 22 can be limited through the valve hole.

Specifically, the sealing plate 21 is provided with a first stopper ring 211, and the air bag 22 is located in the first stopper ring 211. Specifically, the balloon body 221 is located within the first stop collar 211. The valve hole and the first stopper 211 cooperate to define the position of the air bag 22, thereby improving the workability of the air bag 22.

The periphery of the valve seat 1 is also provided with a second limiting ring 12, and the ventilation flame-retardant assembly 3 is positioned in the second limiting ring 12. The set position of the vent flame retardant assembly 3 can be defined. Wherein, the periphery of closing cap 23 still is equipped with spacing edge 231, and fire-retardant subassembly 3 is located spacing edge 231 in ventilating. The second limiting ring 12 and the limiting edge 231 cooperate to limit the setting position of the ventilation flame-retardant assembly 3, so that the working performance of the ventilation flame-retardant assembly 3 is improved.

The utility model also provides a diesel engine, which comprises the explosion-proof safety valve, and the valve seat 1 is a shell of the diesel engine.

The utility model also provides a ship, which comprises the diesel engine.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. An explosion-proof safety valve, characterized by comprising:

a valve seat (1), wherein the valve seat (1) is provided with an opening (11);

the elastic sealing assembly (2), the elastic sealing assembly (2) comprises a sealing plate (21), an air bag (22) and a sealing cover (23), the sealing plate (21) is covered on the valve seat (1) and can seal the opening (11), the air bag (22) is arranged on the sealing plate (21), and the sealing cover (23) is detachably connected with the valve seat (1) and can elastically press the air bag (22) on the sealing plate (21).

2. The explosion-proof safety valve according to claim 1, wherein the elastic sealing assembly (2) further comprises a ventilation flame-retardant assembly (3), the ventilation flame-retardant assembly (3) is sleeved on the periphery of the air bag (22) and is distributed with the air bag (22) at intervals, the ventilation flame-retardant assembly (3) is located between the valve seat (1) and the sealing cover (23), the sealing plate (21), the air bag (22), the ventilation flame-retardant assembly (3) and the sealing cover (23) form a cavity, and the ventilation flame-retardant assembly (3) is configured to enable media in the cavity to pass through the ventilation flame-retardant assembly (3).

3. The explosion-proof safety valve according to claim 2, wherein the venting flame-retardant assembly (3) comprises a plurality of flame-retardant sheets stacked in sequence.

4. The explosion-proof safety valve according to claim 1, further comprising a plurality of connection assemblies (4) spaced apart along the circumference of the cover (23), the connection assemblies (4) comprising screws (41) and sealing gaskets (42), the screws (41) passing through the sealing gaskets (42) and the cover (23) in sequence and being screwed with the valve seat (1).

5. The explosion-proof safety valve according to claim 1, characterized in that the valve seat (1) is embedded with a sealing ring (5), the sealing ring (5) being used for sealing a gap between the sealing plate (21) and the valve seat (1).

6. The explosion-proof safety valve according to any one of claims 1-5, characterized in that the central axis of the opening (11), the central axis of the sealing plate (21), the central axis of the airbag (22) and the central axis of the cover (23) are all collinear.

7. The explosion-proof safety valve according to any one of claims 1-5, wherein the airbag (22) comprises an airbag body (221), a valve (222) arranged on the airbag body (221), and a cap covering the valve (222), the cap (23) further being provided with a valve hole, the valve (222) being insertable in the valve hole.

8. The explosion-proof safety valve according to any one of claims 1-5, wherein the sealing plate (21) is provided with a first stop ring (211), and the airbag (22) is located in the first stop ring (211).

9. Diesel engine, characterized in that it comprises an explosion-proof safety valve according to any one of claims 1-8, said valve seat (1) being the casing of said diesel engine.

10. A marine vessel comprising the diesel engine of claim 9.