CN211089311U

CN211089311U - Emergency ventilation door for marine generator

Info

Publication number: CN211089311U
Application number: CN201922415499.3U
Authority: CN
Inventors: 许先造
Original assignee: Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Current assignee: Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-24
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses an emergency ventilation door for a marine generator, wherein the structure of a shutter is that anti-drip ventilation holes are punched on the outer side surface array of a steel plate, each anti-drip ventilation hole consists of a hole and an arc cover structure formed by the surface of the steel plate, the arc cover structure is covered and connected on the upper edge of the hole, the inner side surface of the shutter is welded with a layer of stainless steel wire cloth, and the stainless steel wire cloth covers the hole of each anti-drip ventilation hole; the back of the louver is provided with a window sealing pad which is an oil-resistant rubber frame; the outer cover is of a box-shaped structure and is covered on the outer side of the shutter; the outer cover, the window sealing pad and the shutter are fixed on the generator cover shell through fasteners. The utility model discloses can realize carrying out emergent ventilation to marine generator through convenient operation under emergency, its protection level satisfies IP23 requirement simultaneously.

Description

Emergency ventilation door for marine generator

Technical Field

The invention relates to an emergency ventilation door for a marine generator, which is used in the field of marine generators.

Background

The cooling mode of the marine generator with the capacity of more than medium is generally closed circulation ventilation cooling, the generator is provided with a heat exchanger of air and water, and the protection grade of the generator at least meets the requirement of preventing foreign matters larger than 1 mm from entering the interior of a generator shell. However, in emergency situations, for example, the air-water heat exchanger is shut down due to a fault, and the generator as a power source on board the ship is not allowed to stop running immediately, and in order to prevent overheating of the windings and iron core during continuous running of the generator, the emergency vent door must be opened to facilitate ventilation cooling of the generator. Meanwhile, the protection grade of the generator is required to be not lower than I P23, so that small solid foreign matters with the diameter larger than 12 millimeters can be prevented from entering the shell of the generator, and meanwhile, the generator is not harmfully affected by water drenching at an angle of 60 degrees or less than 60 degrees with the vertical line. In addition, the door is fixed and structured so that it can be opened easily and quickly when necessary.

In the prior art, a common flat plate type door plate structure is generally adopted, so that the door plate can well play a role in sealing when a generator normally operates, and foreign matters larger than 1 mm can be prevented from entering the interior of a generator shell; when the air-water heat exchanger is closed due to faults, the door plate is detached to prevent overheating of the winding and the iron core in the continuous operation of the generator, and the protection level of the generator cannot meet the requirement of IP 23. Meanwhile, tools such as a rotary cutter and a wrench are needed when the door panel is dismounted, so that the requirements of rapidness and convenience cannot be met.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an emergency ventilation door for a marine generator, which can realize emergency ventilation of the marine generator through convenient operation in an emergency situation, and meanwhile, the protection grade of the emergency ventilation door meets the requirement of IP 23.

One technical scheme for achieving the above purpose is as follows: an emergency ventilation door for a marine generator comprises a shutter, a window sealing pad and an outer cover which are arranged on a generator cover shell;

the structure of the louver is characterized in that anti-drip vent holes are punched on the outer side surface of a steel plate in an array mode, each anti-drip vent hole is composed of a hole and an arc-shaped cover structure formed on the surface of the steel plate, the arc-shaped cover structure is covered on the upper edge of the hole, a layer of stainless steel wire cloth is welded on the inner side surface of the louver, the stainless steel wire cloth covers the hole of each anti-drip vent hole, and a plurality of louver connecting through holes are formed in the four side edges of the louver and located outside the range of the stainless steel wire cloth;

the back of the louver is provided with the window sealing pad which is an oil-resistant rubber frame, the window sealing pad is positioned outside the range of the stainless steel wire cloth, and the window sealing pad is provided with a window sealing pad connecting through hole corresponding to the louver connecting through hole;

the outer cover is of a box-shaped structure, the outer cover is connected to the outer side of the louver in a covering mode, and outer cover connecting through holes corresponding to the louver connecting through holes are formed in the outer cover;

the outer cover, the window sealing pad and the shutter are fixed on the generator cover shell through fasteners.

Further, the thickness of the steel plate is 1.5 mm.

Further, the stainless steel wire cloth is 4-mesh stainless steel wire cloth.

Furthermore, the single edge of the periphery of the window sealing pad extends out of the blind window by 10 mm.

Furthermore, four sides of the outer cover are respectively provided with a channel steel which is transversely and longitudinally arranged, and the channel steel is provided with a connecting through hole.

Furthermore, the fastener is a double-thread screw, a first end of the fastener compresses the shutter, a butterfly washer is arranged on the first end, a second end of the fastener compresses the outer cover, and the second end of the fastener is fastened through a butterfly nut.

According to the emergency ventilation door for the marine generator, cooling air of the generator can enter or be discharged out of the generator through the anti-dripping holes, so that ventilation and cooling of the generator are facilitated, meanwhile, due to the special structure of the anti-dripping holes, the protection grade of the generator is not lower than IP23, small solid foreign matters with the diameter larger than 12 mm can be prevented from entering the shell of the generator, and meanwhile, the generator is not harmfully affected by water drenching at an angle of 60 degrees or less than 60 degrees with a vertical line. Especially, the door is fixed by adopting a double-end screw and a butterfly nut, so that the mounting and dismounting of the outer cover can be carried out by hands without tools, and the purposes of convenience and quickness are achieved.

Drawings

FIG. 1 is a schematic structural view of an emergency vent door for a marine generator according to the present invention;

FIG. 2 is a front view of a blind of an emergency vent for a marine generator of the present invention;

FIG. 3 is a cross-sectional view of a blind of an emergency vent for a marine generator of the present invention;

FIG. 4 is a schematic view of a steel plate of an outer cover of an emergency vent door for a marine generator according to the present invention;

fig. 5 is a schematic view of an outer cover of an emergency vent door for a marine generator according to the present invention.

Detailed Description

In order to better understand the technical solution of the present invention, the following detailed description is made by specific examples:

referring to fig. 1, the emergency ventilation door for a marine generator according to the present invention includes a louver 1 installed on a generator cover housing 7, a window packing 2, and an outer cover 5.

Referring to fig. 2 and 3, the structure of the louver 1 is that 12 anti-drip vent holes are punched in an array on the outer side surface of a steel plate 11 with the thickness of 1.5mm, each anti-drip vent hole is composed of a hole 13 and an arc-shaped cover structure 14 formed on the surface of the steel plate, and the arc-shaped cover structure 14 is covered and connected to the upper edge of the corresponding hole 13 to form an anti-drip cover, so that the requirement of IP23 is met, and the influence of water spraying at an angle of 60 degrees or less than 60 degrees with the vertical line on a generator is avoided. Meanwhile, in order to prevent small solid foreign matters with the diameter larger than 12 mm from entering the generator housing, a layer of 4-mesh stainless steel wire cloth 12 is welded on the inner side surface of the louver 1, and the stainless steel wire cloth 12 shields the hole 13 of each anti-drip vent hole. The four side edges of the blind window 1 are respectively provided with 10 blind window connecting through holes with the diameter of 10mm outside the range of the stainless steel wire cloth 12.

The back of shutter 1 is equipped with window sealing pad 2, and the window sealing pad is 3 mm's of thickness resistant oily rubber frame, and the window sealing pad is located stainless steel wire cloth scope outside, prevents that it from sheltering from antidrip ventilation hole, is equipped with the window sealing pad connect the through-hole that corresponds with shutter connect the through-hole on it. The single edge of the periphery of the window sealing pad 2 extends out of the louver by 10mm respectively so as to ensure the sealing effect.

Referring to fig. 4 and 5, the outer cover 5 has a box-shaped structure, which is formed by bending a steel plate 51 with four open corners, and then a channel steel 52 is welded to the periphery of the outer cover to increase the rigidity of the outer cover. The outer cover 5 is provided with an outer cover connecting through hole corresponding to the shutter connecting through hole. The outer cover 5 covers the outer side of the louver 1.

The outer cover 5, the window sealing pad 2 and the louver 1 are fixed on the generator cover shell through fasteners. The fastener is double threaded screw 3, and its first head compresses tightly the shutter, is equipped with butterfly packing ring 4 at the first head, and its second head compresses tightly enclosing cover 5, and the second head passes through butterfly packing ring 4 and butterfly nut 6 fastening. Wherein the double-end screw 3 is processed by cold drawing hexagonal steel and is galvanized for rust prevention; the disc-shaped gasket 4 adopts the A type series in the GB/T1972 national standard: disc spring A16-1 GB/T1972; the wing nut 6 adopts an M8 circular wing nut in GB/T62.1 national standard.

The emergency ventilation door for the marine generator is installed in the following sequence:

1. firstly, adhering the window seal pad 2 on the generator cover shell 7 by using glue;

2. fixing the shutter 1 on a generator cover shell 7 by using a double-thread screw 3, and screwing a shorter end of the double-thread screw 3 into a disc-shaped gasket 4;

3. installing an outer cover 5;

4. installing a disc-shaped gasket 4;

5. the wing nut 6 is tightened by hand.

And finishing the installation of the emergency ventilation door.

The emergency ventilation door is in a closed state under the condition of normal operation of the generator, and the protection grade of the emergency ventilation door can prevent foreign matters larger than 1 millimeter from entering the interior of the generator shell.

In emergency, for example, the air-water heat exchanger is closed due to failure, and the generator is not allowed to stop running immediately, in order to prevent the overheating of the winding and the iron core in the continuous running of the generator, the outer cover of the emergency ventilation door can be opened, and the cooling air of the generator can enter or be discharged out of the interior of the generator through the anti-dripping holes, so that the ventilation and cooling of the generator are facilitated. Meanwhile, due to the special structure of the anti-dripping hole, the protection grade of the generator is not lower than IP23, small solid foreign matters with the diameter larger than 12 millimeters can be prevented from entering the shell of the generator, and meanwhile, the generator is not harmfully affected by water drenching at an angle of 60 degrees or less than 60 degrees with the vertical line. Especially, the door is fixed by a specially-made double-end screw and a butterfly nut, so that the outer cover can be mounted and dismounted by hands without tools, and the purposes of convenience and quickness are achieved.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides an emergent ventilation door that marine generator used, is including installing shutter, window sealing gasket and the enclosing cover on the generator cover casing, its characterized in that:

2. An emergency vent door for a marine generator according to claim 1, wherein the thickness of the steel plate is 1.5 mm.

3. The emergency vent door for a marine generator according to claim 1, wherein the stainless steel wire cloth is a 4-mesh stainless steel wire cloth.

4. An emergency ventilation door for a marine generator according to claim 1, wherein a single peripheral edge of the window seal extends 10mm beyond the window blind.

5. The emergency ventilation door for the marine generator as claimed in claim 1, wherein channel steel is transversely and longitudinally arranged on four sides of the outer cover, and a connecting through hole is formed in the channel steel.

6. An emergency vent door for a marine generator according to claim 1, wherein the fastening member is a double-headed screw, a first end of which presses the louver, a butterfly washer is provided on the first end, a second end of which presses the outer cover, and the second end is fastened by a butterfly nut.