CN220041388U

CN220041388U - Environment-friendly device for high-efficiency low-noise pressure relief of hydropower station pressure vessel

Info

Publication number: CN220041388U
Application number: CN202320886093.7U
Authority: CN
Inventors: 江传宾; 段开林; 刘钊; 张红伟; 陈中志; 谌裕嘉
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-11-17
Anticipated expiration: 2033-04-19

Abstract

The utility model discloses an environment-friendly device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel, which comprises an exhaust pipe connected with the pressure vessel, wherein the bottom of the exhaust pipe is connected with an internal silencing unit of an upper box body, vent holes are uniformly distributed on the surface of the upper box body, and silencing cotton is filled in the upper box body; the utility model can effectively reduce the noise of the pressure vessel in the pressure removing site, protect the hearing of site operators and prevent the hearing damage caused by overlarge site noise; meanwhile, the on-site silencing effect of pressure relief is good, the opening limit of the exhaust valve of the pressure vessel can be released, the exhaust valve of the pressure vessel can be fully opened, the pressure relief speed of the pressure vessel is further accelerated, and the pressure relief efficiency is improved.

Description

Environment-friendly device for high-efficiency low-noise pressure relief of hydropower station pressure vessel

Technical Field

The utility model relates to the technical field of pressure vessel pressure relief, in particular to an environment-friendly device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel.

Background

When the pressure vessel is overhauled, the pressure vessel needs to be removed, and as the pressure vessel is internally provided with high-pressure gas which is excessively different from the outside atmospheric pressure, the high-pressure gas is sprayed to the outside after the exhaust valve is opened, so that severe turbulence is generated, the pressure removing site generates extremely high noise, and the hearing of site operators is seriously endangered. Meanwhile, the pressure release site limits the opening of the exhaust valve of the pressure vessel in order to reduce noise, so that the exhaust valve cannot reach a full-open state, and the pressure release speed of the pressure vessel is influenced.

Disclosure of Invention

The utility model aims to overcome the defects and provide an environment-friendly device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel, so as to solve the problems in the background technology.

The utility model aims to solve the technical problems, and adopts the technical scheme that: the utility model provides an environmental protection device that high efficiency low noise of power station pressure vessel removed and pressed, includes the blast pipe of being connected with pressure vessel, the blast pipe bottom is connected with the inside amortization unit of upper portion box, upper portion box surface equipartition has the air vent, and upper portion box inside is filled has the amortization cotton.

Preferably, the bottom of the upper box body is provided with a lower box body, vent holes are uniformly distributed on the surface of the lower box body, and silencing cotton is filled in the lower box body.

Preferably, the upper box body comprises a cylindrical upper chamber at the top and a side chamber at the side part, wherein the side chamber is in an annular cylinder structure, and an inner ring area enclosed by the side chamber is provided with an inner silencing unit.

Preferably, the lower box body is of a cylindrical cavity structure, and the outer diameter of the lower box body is matched with the diameter of an inner ring enclosed by the side cavity.

Preferably, the upper box bottom and the lower box bottom are both provided with connecting plates, and the connecting plates are connected through bolts.

Preferably, a pressure gauge is also mounted on the upper box.

Preferably, the upper box body is also provided with a dustproof outer cover, and a plurality of openings which are opened downwards are uniformly distributed on the surface of the dustproof outer cover.

Preferably, an exhaust valve is arranged on the exhaust pipe.

The utility model has the beneficial effects that:

the utility model can effectively reduce the noise of the pressure vessel in the pressure removing site, protect the hearing of site operators and prevent the hearing damage caused by overlarge site noise; meanwhile, the on-site silencing effect of pressure relief is good, the opening limit of the exhaust valve of the pressure vessel can be released, the exhaust valve of the pressure vessel can be fully opened, the pressure relief speed of the pressure vessel is further accelerated, and the pressure relief efficiency is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of an environmental protection apparatus for efficient low noise pressure relief of a hydropower station pressure vessel;

FIG. 2 is a schematic cross-sectional view of the upper housing of FIG. 1;

FIG. 3 is a schematic top view of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the lower housing of FIG. 1;

FIG. 5 is a schematic top view of FIG. 4;

fig. 6 is a schematic front view of the dust cap of fig. 1.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the specific examples.

As shown in fig. 1 to 6, an environment-friendly device for removing pressure of a hydropower station pressure vessel with high efficiency and low noise comprises an exhaust pipe 2 connected with the pressure vessel 1, wherein the bottom of the exhaust pipe 2 is connected with an internal silencing unit 4 of an upper box body 3, vent holes 5 are uniformly distributed on the surface of the upper box body 3, and silencing cotton 6 is filled in the upper box body 3. In the present embodiment, the internal sound deadening unit 4 may employ a muffler. And the silencing cotton 6 is filled in the upper box body 3 to further play a silencing role.

Preferably, the bottom of the upper box 3 is provided with a lower box 7, the surface of the lower box 7 is uniformly provided with vent holes 5, and the inside of the lower box 7 is also filled with noise reduction cotton 6. In this embodiment, the lower case 7 may form a silencing area on the bottom of the upper case 3, so as to further improve the silencing effect.

Preferably, the upper box 3 comprises a cylindrical upper chamber 3.1 at the top and a side chamber 3.2 in the shape of an annular cylinder at the side, and an inner ring area enclosed by the side chamber 3.2 is provided with an inner silencing unit 4.

Preferably, the lower tank 7 is of cylindrical chamber structure, the outer diameter of which matches the diameter of the inner ring enclosed by the side chambers 3.2. After the design, the lower box body 7 is conveniently and directly embedded into the upper box body 3, and the installation is convenient.

Preferably, the bottom of the upper box body 3 and the bottom of the lower box body 7 are respectively provided with a connecting plate 8, and the connecting plates 8 are connected through bolts. The upper case 3 and the lower case 7 can be easily connected and installed by the connection plate 8.

Preferably, a pressure gauge 9 is also mounted on the upper tank 3. The pressure gauge 9 can monitor the pressure in the upper box 3 during the pressure removal to judge whether the silencer is blocked or not.

Preferably, a dust-proof cover 10 is further arranged outside the upper box 3, and a plurality of openings 11 which are opened downwards are uniformly distributed on the surface of the dust-proof cover 10. The dust cover 10 can prevent the silencing hole from being blocked due to dust accumulation when the silencing device is not used for a long time.

Preferably, the exhaust pipe 2 is provided with an exhaust valve 12.

The working principle of the utility model is as follows:

the utility model adopts two-stage silencing, when the pressure vessel is depressurized, air flow firstly enters the inner silencing unit 4 through the exhaust pipe 2 to carry out primary silencing, and then the outer silencing unit consisting of the upper box body 3 and the lower box body 7 is used for carrying out secondary silencing. The external silencing unit is also provided with a pressure gauge for monitoring the pressure in the external silencing unit when the pressure is removed so as to judge whether the silencing device is blocked or not. The dust-proof outer cover 10 is also designed on the outer surface of the whole silencer to avoid the blockage of the silencing holes caused by dust accumulation because the silencer is not used for a long time. When the device is used for pressure vessel pressure relief, the site noise is obviously reduced compared with the prior art, the hearing of site staff is effectively protected, the pressure relief time is shortened, and the pressure relief efficiency is improved.

The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. The utility model provides an environmental protection device that high efficiency low noise of power station pressure vessel removed pressure, includes blast pipe (2) be connected with pressure vessel (1), its characterized in that: the bottom of the exhaust pipe (2) is connected with an internal silencing unit (4) of the upper box body (3), vent holes (5) are uniformly distributed on the surface of the upper box body (3), and silencing cotton (6) is filled in the upper box body (3).

2. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 1, wherein: the bottom of the upper box body (3) is provided with a lower box body (7), vent holes (5) are uniformly distributed on the surface of the lower box body (7), and silencing cotton (6) is filled in the lower box body (7).

3. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 2, wherein: the upper box body (3) comprises a cylindrical upper cavity (3.1) at the top and a side cavity (3.2) with an annular cylinder structure at the side, and an inner ring area enclosed by the side cavity (3.2) is provided with an inner silencing unit (4).

4. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 3, wherein: the lower box body (7) is of a cylindrical cavity structure, and the outer diameter of the lower box body is matched with the diameter of an inner ring enclosed by the side cavity (3.2).

5. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 2, 3 or 4, wherein: the bottom of the upper box body (3) and the bottom of the lower box body (7) are both provided with connecting plates (8), and the connecting plates (8) are connected through bolts.

6. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 1, wherein: and a pressure gauge (9) is also arranged on the upper box body (3).

7. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 1 or 6, wherein: the upper box body (3) is also provided with a dust-proof outer cover (10), and a plurality of openings (11) which are opened downwards are uniformly distributed on the surface of the dust-proof outer cover (10).

8. The environmental protection device for high-efficiency low-noise pressure relief of a hydropower station pressure vessel according to claim 1, wherein: an exhaust valve (12) is arranged on the exhaust pipe (2).