CN219091345U

CN219091345U - Detachable multifunctional dirt blocking net

Info

Publication number: CN219091345U
Application number: CN202223518960.6U
Authority: CN
Inventors: 何福全
Original assignee: Datang International Power Generation Co ltd Beijing Gaojing Thermal Power Branch
Current assignee: Datang International Power Generation Co ltd Beijing Gaojing Thermal Power Branch
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-30
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a detachable multifunctional dirt blocking net. At present, a circulating water system is an important auxiliary system of a power plant, and cleaning of circulating water has a great influence on safety and stability of a unit. Meanwhile, the existing sewage blocking net of the circulating water tower pool has only a blocking effect and cannot collect sundries. A detachable multifunctional dirt blocking net comprises the following components: the outer frame (1) is detachably connected with a group of circular arc-shaped trash holding nets (2), the bottom of the outer frame is connected with a bottom layer platform (3) with a semicircular structure, a bottom layer trawl (4) with a semicircular structure is connected to the arc-shaped net surface of the circular arc-shaped trash holding nets, a protective net (5) is arranged on the outer side of the bottom layer trawl, and two sides of the protective net are fixedly connected with the outer frame; the distance between the bottom trawl and the bottom platform is 200-300mm. A group of arc-shaped dirt blocking nets on the outer frame are provided with supporting rib plates (6) in a segmented mode. The utility model is applied to the field of sundry blocking in the circulating water tower pool of the power plant.

Description

Detachable multifunctional dirt blocking net

Technical field:

the utility model relates to a detachable multifunctional dirt blocking net.

The background technology is as follows:

the circulating water system is an important auxiliary system of the power plant, and cleaning of the circulating water has a great influence on safety and stability of the unit. The sewage blocking net (grid) of the circulating water tower pool is a main device for filtering large-particle impurities in water. The dirt blocking net (grid) is divided into a fixed type and a detachable type according to the fact that the dirt blocking net (grid) is detachable or not; the filter screen type can be divided into a plane type, a triangle type (V type) and a circular arc type (U type). The fixed type is basically not used, the current trend is mainly detachable, and the filter screen type is used in three types of use, namely a plane type, a triangle type (V type) and a circular arc type (U type) due to factors such as field environment, use requirement and the like.

The defect of the existing sewage blocking net (grating) of the circulating water tower pool

(1) Only has the blocking function, and can not collect sundries. Because the dirt blocking net is placed in the pool of the tower pool, sundries can directly enter the circulating water system when the dirt blocking net is lifted and cleaned from the diversion trench at the outlet of the tower pool. Can only be shut down for cleaning, and is easy to cause unsmooth flow.

(2) Because the grids are planar, each grid strip has a certain width, and the filtering area is relatively reduced under the same sectional area.

(3) Large volume, heavy weight, difficult lifting and lowering, and needing hoisting equipment.

(4) Most of the dirt blocking nets still mainly block dirt and cannot effectively collect sundries accumulated or floating in water.

(5) The bottom of the individual dirt blocking net is provided with a trawl. Such as the U-shaped dirt blocking net in the illustration. When sundries exist at the bottom of the water pool, the design cannot be placed to the bottom. There is a bottom leakage flow (hole).

The utility model comprises the following steps:

the utility model aims to provide a detachable multifunctional dirt blocking net.

The above object is achieved by the following technical scheme:

a detachable multifunctional dirt blocking net comprises the following components: the outer frame is detachably connected with a group of circular arc-shaped trash holding nets, the bottom of the outer frame is connected with a group of semicircular bottom layer platforms, the arc-shaped trash holding nets are connected with semicircular bottom layer trawls, protective nets are arranged on the outer sides of the bottom layer trawls, two sides of each protective net are fixedly connected with the outer frame, the end parts of the bottom layer trawls are connected with bottom layer trawls beams, and two ends of the bottom layer trawls beams are connected with the outer frame;

the distance between the bottom trawl and the bottom platform is 200-300mm.

The detachable multifunctional dirt blocking net is characterized in that a supporting rib plate is arranged on a single dirt blocking net of a group of circular arc dirt blocking nets on the outer frame in a segmented mode.

The detachable multifunctional dirt blocking net is characterized in that the outer frame is placed in a cement culvert guide groove

The utility model has the beneficial effects that:

1. the utility model is arranged in a circulating water outlet (a water collecting tank at the lower part of a circulating water mechanical ventilation cooling tower) of a tower pool and a cement guide groove. After the circulating water is filtered by the filter screen, the circulating water returns to the unit, and sundries are blocked at the circulating water. The structure of the dirt blocking net (grid) is improved, and the dual functions of dirt blocking and collecting are realized. And the collecting effect is improved. Meanwhile, the problem that the product cannot be placed to the bottom in the prior art is solved.

2. The utility model takes the arc-shaped dirt blocking net (grid) as a basic form to raise the bottommost trawl by 200-300mm. Is convenient to be placed at the bottom. As the bottommost platform is lifted, only the arc frame is reserved, and the bottommost platform can easily fall to the bottom. The protective net is added outside the bottommost trawl, so that more sundries can be collected conveniently. Meanwhile, trawl nets are added at different heights appropriately according to the pool environment and the running condition. Is convenient for collecting the sundries floating, sinking and floating and falling to the bottom.

3. The weight of the single U-shaped dirt blocking net is controlled to be about 50Kg, so that the U-shaped dirt blocking net is convenient to lift manually. And the corrosion resistance life is prolonged by adopting stainless steel materials. Proper supports are arranged on the single dirt blocking net in a segmented mode, and strength is improved.

4. The utility model improves the structure of the dirt blocking net (grid) and realizes the dual functions of dirt blocking and collecting. The multi-layer trawl is arranged, and the protective net is arranged outside the trawl, so that the collection effect is improved. The bottom trawl is lifted, so that the problem that the product cannot be placed to the bottom in the prior art is solved. Can realize cleaning and collecting sundries for many times under the condition of no shutdown.

Description of the drawings:

fig. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a cross-sectional view A-A of fig. 1.

Fig. 3 is a top view of a single dirt blocking net.

Fig. 4 is a schematic structural view of the original V-shaped filter screen.

Fig. 5 is a top view of fig. 4.

Fig. 6 is a schematic structural diagram of an original pi-shaped filter screen.

Fig. 7 is a top view of fig. 6.

In the figure: 1. the device comprises an outer frame, 2 circular arc-shaped dirt blocking nets, 3, a bottom layer platform, 4, a bottom layer trawl, 5, a protective net, 6, supporting rib plates, 7, bottom layer trawl cross beams, 8, hanging plates, 9 and transverse supports.

The specific embodiment is as follows:

example 1:

a detachable multifunctional dirt blocking net comprises the following components: the sewage treatment device comprises an outer frame 1, wherein the outer frame is made of steel, the outer frame and a group of circular arc-shaped sewage blocking nets 2 are detachably connected through threads or clamping pieces, the bottom of the outer frame is connected with a group of semicircular bottom layer platforms 3, and the bottom layer platforms and the bottom of the outer frame are fixed into an integral structure in a welding mode; the arc-shaped net surface of the arc-shaped dirt blocking net is connected with a bottom trawl 4 with a semicircular structure, a protective net 5 is arranged on the outer side of the bottom trawl, and two sides of the protective net are fixedly connected with an outer frame; the arc-shaped surface of the bottom trawl is fixed with the circular arc-shaped trash blocking net into an integrated structure in a welding mode, wherein the end part of the bottom trawl is connected with a bottom trawl beam 7 in a welding mode, the bottom trawl beam adopts a square tube structure, and two sides of the bottom trawl beam are fixedly connected with an outer frame in a welding mode; the distance between the bottom trawl and the bottom platform is 200-300mm.

The single dirt blocking net of a group of circular arc dirt blocking nets on the outer frame is provided with a supporting rib plate 6 in a segmented mode. The outer frame is placed in the cement culvert guide groove. The support rib plate is of a semicircular steel plate structure, a longitudinal beam of the outer frame is connected with a transverse support 9 in a welding mode, and the transverse support adopts an angle steel structure.

And (5) processing and manufacturing a steel outer frame according to the size of the cement culvert at the outlet of the circulating water pond, and placing the steel outer frame into the cement culvert guide groove. 4 detachable dirt blocking nets are arranged in each dirt blocking net (grid) frame, and the single weight is 50Kg.

Each dirt blocking net is provided with proper support in the height direction. Increasing the stiffness. And each dirt blocking net is provided with a trawl at the bottom. The trawl is arranged at different heights as required. And each dirt blocking net is provided with a trawl at the bottom. The trawl is arranged at different heights as required. I.e. a single dirt blocking net can be provided with a plurality of layers of trawl nets;

the dirt blocking net grid can be a stainless steel net or a grid. The trash rack can be made of angle steel, flat steel, round steel, steel pipe and other sectional materials in different types. The mesh size is selected according to the requirements.

Claims

1. A detachable multifunctional dirt blocking net comprises the following components: the outer frame, outer frame with a set of convex dirt blocking net detachable connection, the bottom of outer frame be connected with a set of semi-circular structured's bottom platform, characterized by: the arc-shaped net surface of the arc-shaped dirt blocking net is connected with a bottom trawl with a semicircular structure, a protective net is arranged on the outer side of the bottom trawl, two sides of the protective net are fixedly connected with an outer frame, the end part of the bottom trawl is connected with a bottom trawl beam, and two ends of the bottom trawl beam are connected with the outer frame;

the distance between the bottom trawl and the bottom platform is 200-300mm.

2. The detachable multifunctional dirt blocking net according to claim 1, wherein: the single dirt blocking net of a group of circular arc dirt blocking nets on the outer frame is provided with a supporting rib plate in a segmented mode.

3. The detachable multifunctional dirt blocking net according to claim 2, characterized in that: the outer frame is placed in the cement culvert guide groove.