CN114250825A

CN114250825A - Assembled ecological seawater taking head

Info

Publication number: CN114250825A
Application number: CN202111556324.XA
Authority: CN
Inventors: 吴水波; 韩旭; 孙靖; 苗超
Original assignee: Tianjin Institute of Seawater Desalination and Multipurpose Utilization MNR
Current assignee: Tianjin Institute of Seawater Desalination and Multipurpose Utilization MNR
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-29
Anticipated expiration: 2041-12-17
Also published as: CN114250825B

Abstract

The invention discloses an assembled ecological seawater taking head which comprises a base, wherein a barrel is fixed on the base, and a water taking pipe is connected to the barrel; the water collecting cylinder with the hexagonal prism structure comprises a top plate and a bottom plate which are arranged at an upper interval and a lower interval, the top plate is integrally prefabricated and cast with the bottom plate through outer stand columns and inner stand columns, grids are respectively connected between every two adjacent outer stand columns between the top plate and the bottom plate, the gas distribution pipe support is prefabricated and cast with the bottom plate through a pre-buried mode and is connected with the gas distribution pipe support through a pipe clamp with a bolt. The apopore of bottom plate is connected with tray upper end mouth, and the setting in the upper end mouth that tray lower port inserted the barrel. By adopting the device, the field construction time can be shortened, the cleaning process is simple and efficient, and the structural stability is good.

Description

Assembled ecological seawater taking head

Technical Field

The invention relates to a seawater taking head, in particular to an assembled ecological seawater taking head.

Background

The seawater intake engineering is an important component of various seawater utilization systems, and the seawater intake engineering with good design and construction can ensure that the seawater utilization system obtains a safe, high-quality, sufficient and economic seawater source.

At present, the seawater taking structures adopted in domestic seawater utilization engineering are various in types, and comprise diversion box culverts, tide type water taking structures, shore type water taking structures, seabed type water taking structures, mixed water taking structures and the like. The seawater taking head is a water inlet unit of a seabed type water taking structure, and is directly exposed in a natural marine water body, so that marine organism impact and rolling plug are easily formed in the aspect of ecology, and the stability is easily damaged by seawater flow impact. Meanwhile, the construction of the seawater intake pipeline and the intake head is mainly carried out on the sea, so that the construction and construction costs are high and strict control is required. In addition, the seawater taking head is difficult to clean and maintain in the operation process and difficult to repair after failure, so the seawater taking head can be guaranteed to be reliable, economic and eco-friendly only by adopting a systematic scientific method to design and build the seawater taking head.

The common problems of overhigh construction cost of the water taking head, large ecological influence, poor maintainability and the like exist in domestic water taking projects.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the assembled ecological seawater taking head which can shorten the site construction time, has simple and efficient cleaning process and good structural stability.

The invention discloses an assembled ecological seawater taking head, which comprises a base, wherein a cylinder body is fixed on the base, a side port is formed in the side wall of the cylinder body, and the side port is fixedly connected with one end of a water taking pipe;

the tray comprises a main body, an upper boss is arranged on the top wall of the main body and used as an upper port of the tray, a lower boss is arranged on the bottom wall of the main body and used as a lower port of the tray, the lower port of the tray is inserted into the upper port of the cylinder body and is welded and fixed between the upper port and the lower port;

a water collecting cylinder with a hexagonal prism structure comprises a regular hexagonal top plate and a regular hexagonal bottom plate which are arranged at intervals up and down along the horizontal direction, an access hole is arranged in the middle of the top plate, a top cover is covered at the access hole, a water outlet hole is arranged in the middle of the bottom plate, the water outlet hole is connected with the upper port of the tray in a socket joint mode and sealed by a sealing ring, the gas distribution pipe bracket arranged around the water outlet hole is connected with the bottom plate in a prefabricated pouring mode in a pre-buried mode, the gas distribution pipe is connected with the gas distribution pipe bracket through a pipe clamp with a bolt, a plurality of inner upright posts are connected between the top plate and the bottom plate along the outer periphery of the access hole and the water outlet hole, each corner position between the top plate and the bottom plate is respectively connected with an outer upright post arranged along the vertical direction, at least two groups of U-shaped slots are connected to each outer upright at intervals up and down, and each group of U-shaped slots comprises two U-shaped slots;

grids are connected between every two adjacent outer columns between the top plate and the bottom plate respectively, n-shaped connecting pieces are arranged on each grid at intervals up and down respectively, plugs at two ends of each n-shaped connecting piece are inserted into U-shaped slots of the two adjacent outer columns respectively, a penetrating groove is formed in the bottom of one grid, and the end portion of the air distribution pipe penetrates through the penetrating groove and is arranged outside the water collecting cylinder.

The invention has the beneficial effects that:

1. the assembled ecological seawater taking head adopts lower flow velocity of the passing grid, can effectively reduce marine organism rolling load and rolling plug in the water taking process, and is friendly to marine ecological environment;

2. the assembled ecological seawater taking head is integrally of an assembled structure, and components can be fully prefabricated, so that the on-site construction time is shortened, and the construction investment of a water taking project is saved;

3. according to the assembled ecological seawater taking head, the grids are periodically cleaned by compressed air, the cleaning mode is green and environment-friendly, and the cleaning process is simple and efficient;

4. according to the assembled ecological seawater taking head, the grille and the water collecting barrel are connected in an inserting manner, so that the assembled ecological seawater taking head can be replaced quickly and conveniently;

5. according to the assembled ecological seawater taking head, the water collecting barrel is provided with the maintenance hole, the water can enter the water taking pipe after the top cover is opened, and a reserved interface is provided for maintenance operation of an underwater pipeline robot;

6. the assembled ecological seawater taking head part has the advantages that the main body of the water taking head part is similar to a cylinder in shape, the hydraulic condition is excellent, and the structural stability is good.

Drawings

Fig. 1 is an overall schematic view of the assembled ecological seawater intake head of the present invention.

Fig. 2 is a schematic view of a water collecting cylinder of the assembled ecological seawater taking head part of the invention.

Fig. 3 is a schematic view of a tray of the assembled ecological seawater intaking head of the present invention.

Fig. 4 is a schematic view of a grille of the fabricated ecological seawater intaking head of the present invention.

Fig. 5 is a schematic view of the air distribution pipe of the assembled ecological seawater intake head of the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

The assembled ecological seawater taking head disclosed by the invention as shown in fig. 1 comprises a base 5, wherein a cylinder 4 is fixed on the base 5, and a lower port 25 of the cylinder can be connected with the base 5 in a cast-in-place mode. A side port 23 is arranged on the side wall of the cylinder body, and the side port 23 and one end of the water taking pipe 24 can be fixedly connected through a flange or socket welding mode.

A tray 3 comprises a body having an upper boss on the top wall of the body as a tray upper port 20 and a lower boss on the bottom wall of the body as a tray lower port 21. The lower port 21 of the tray is inserted into the upper port 22 of the cylinder 4 and is welded and fixed between the two.

The water collecting cylinder 1 with the hexagonal prism structure comprises a regular hexagonal top plate 9 and a regular hexagonal bottom plate 10 which are arranged at an interval in the horizontal direction, an access hole 15 is formed in the middle of the top plate 9, a top cover 2 covers the access hole 15, a water outlet hole 16 is formed in the middle of the bottom plate 10, the water outlet hole 16 is connected with an upper port 20 of a tray in a socket joint mode and sealed by a sealing ring, an air distribution pipe support 14 arranged around the water outlet hole 16 is connected with the bottom plate 10 in a prefabricated pouring mode in a pre-embedded mode, and an air distribution pipe 8 is connected with the air distribution pipe support 14 through a pipe clamp 19 with a bolt. A plurality of inner upright columns 12 are connected between the top plate 9 and the bottom plate 10 along the periphery of the access hole 15 and the water outlet hole 16, and an outer upright column 11 arranged along the vertical direction is respectively connected at each corner position between the top plate 9 and the bottom plate 10. At least two groups of U-shaped slots are connected to each outer upright post 11 at intervals up and down, and each group of U-shaped slots comprises two U-shaped slots 13. The top plate 9 is integrally prefabricated, poured and connected with the bottom plate 10 into a whole through the outer upright post 11 and the inner upright post 12.

The grid 6 is respectively connected between every two adjacent outer columns 11 between the top plate 9 and the bottom plate 10, n-shaped connecting pieces are respectively arranged on each grid at intervals up and down, plugs 17 at two ends of each n-shaped connecting piece are respectively inserted into U-shaped slots 13 of the two adjacent outer columns 11, a through groove 27 is formed in the bottom of one grid 6, and the end part of the air distribution pipe 8 penetrates through the through groove 27 and is arranged outside the water collecting barrel 1.

Preferably, the first hoisting ring 18 is arranged on the grating 6, and the second hoisting ring 26 is arranged on the water collecting cylinder 1, the top cover 2, the tray 3 and the base 5 so as to facilitate hoisting.

The water passing cross-sectional area of the grating 6 is large, and the water passing cross-sectional area of the grating 6 is set to be not higher than 0.2m/s of the flow speed of water passing through the grating. The formula is A ═ Q/[ v.k.b/(b + h) ], wherein: a is the area of the grating, Q is the designed inflow of the grating, v is the flow velocity of the passing grating, k is the blocking coefficient of the grating, b is the clear distance of the grating, and h is the thickness of the grating.

The bars of the grid 6 are preferably wedge-shaped. After the wedge-shaped grid bars are adopted, marine organisms such as fish in seawater or sewage are only two contact points between the wedge-shaped grid bars and the grid bars on two sides when the marine organisms or the sewage are intercepted by the grid slits, the generated motion resistance is small, the marine organisms such as fish break away and the seawater sewage falls, so that the interception and the rolling plug of the marine organisms such as fish on the grid are reduced, and in addition, the cleaning effect of compressed air on the grid can be improved by adopting the wedge-shaped grid bars.

The gas distribution pipe 8 is preferably made of duplex stainless steel or plastic pipe. Duplex stainless steel or plastic tubing can better resist corrosion from seawater.

The water collecting cylinder 1, the top cover 2 and the base 5 are of prestressed reinforced concrete structures.

The tray 3 and the cylinder 4 are of a prestressed steel cylinder concrete structure.

The whole seawater taking head is of an assembly structure, and various components are prefabricated before being transported to the site.

The using method of the device comprises the following steps:

before the water taking head part of the seawater taking project is installed on site, the water collecting cylinder 1, the top cover 2, the tray 3, the cylinder body 4, the base 5, the grating 6 and the air distribution pipe 8 are prefabricated in advance; after all the components of the water taking head are transported to an installation site, the lower end port 25 of the barrel body is connected with the base 5 in a cast-in-place mode in the first step, the lower end port 21 of the tray is connected with the upper end port 22 of the barrel body 4 in a socket welding mode in the second step, the air distribution pipe 8 is connected with the air distribution pipe support 14 and the pipe clamp 19 with the bolt in a bolt mode in the third step, the grille 6 is connected with the U-shaped inserting groove 13 in the outer upright post 11 of the water collecting barrel in a socket welding mode in the fourth step, the water outlet hole 16 of the water collecting barrel is connected with the upper end port 20 of the tray in a socket welding mode and sealed by a sealing ring in the fifth step, the top cover 2 is connected with the water collecting barrel 1 in a socket welding mode in the sixth step, the side end port 23 is connected with the water taking pipe 24 in a flange or socket welding mode in the seventh step, and all the components can be put into use in a water taking project after being connected.

In the specific use process, seawater firstly enters the water collecting cylinder 1 through the grating 6, then sequentially flows through the tray 3 and the cylinder body 4, and then flows into the water intake pipe 24 to be supplied to a seawater utilization system for use; when the grid is cleaned by compressed air, the water intake pipeline stops water intake, air is blown to the side of the grid by external compressed air through the air distribution pipe 8, bubbles in the water collection cylinder 1 are dense and flow to the water body outside the grid 6, and organisms and dirt scrubbed in the cleaning process are dissipated along with ocean current, so that green cleaning of the grid is realized.

After the water taking head normally operates, compressed air is adopted to blow air to the side of the grating through the air distribution pipe 8 according to the water quality condition of the seawater every several hours or days so as to remove marine organisms and seawater dirt attached to the surface of the grating 6. After the water taking head part is used for years, the grille 6 can be replaced again in a plugging mode, so that the water passing amount is recovered. In the water intaking system operation process, if the water intaking pipe phenomenon such as stifled or damage that appears dirty, when needing to overhaul the operation through underwater pipeline robot, can open top cap 2, let underwater robot get into water intaking pipe 24 and overhaul the operation.

The above examples are only for illustrating the present invention, and the structure, materials, connection mode of the respective components may be changed, and all equivalent changes and modifications made on the basis of the technical idea of the present invention should not be excluded from the scope of the present invention.

Claims

1. The utility model provides an assembled ecological seawater intaking head, includes base (5) the base on be fixed with a barrel (4), its characterized in that: a side port (23) is formed in the side wall of the cylinder body and is fixedly connected with one end of a water taking pipe (24);

the tray (3) comprises a main body, an upper boss is arranged on the top wall of the main body and used as an upper port (20) of the tray, a lower boss is arranged on the bottom wall of the main body and used as a lower port (21) of the tray, the lower port of the tray is inserted into an upper port (22) of the cylinder body and is welded and fixed between the upper port and the lower port;

a water collecting cylinder (1) with a hexagonal prism structure comprises a regular hexagon top plate (9) and a bottom plate (10) which are arranged at intervals up and down along the horizontal direction, a maintenance hole is formed in the middle of the top plate, a top cover is covered at the maintenance hole, a water outlet hole (16) is formed in the middle of the bottom plate, the water outlet hole is connected with an upper port of a tray in a socket mode and sealed by a sealing ring, a gas distribution pipe support (14) arranged around the water outlet hole is connected with the bottom plate in a prefabricated pouring mode in an embedded mode, a gas distribution pipe (8) is connected with the gas distribution pipe support through a pipe clamp with a bolt, a plurality of inner upright columns (12) are connected between the top plate and the bottom plate along the outer peripheral ring of the maintenance hole (15) and the water outlet hole (16), an outer upright column (11) arranged along the vertical direction is respectively connected at each corner position between the top plate and the bottom plate, and at least two groups of U-shaped inserting grooves are connected on each outer upright column at intervals up and down, each group of U-shaped slots comprises two U-shaped slots;

2. The fabricated ecotype seawater taking head of claim 1, wherein: the bars of the grating are wedge-shaped.

3. The fabricated ecological seawater intake head of claim 1 or 2, wherein: the area of the water passing section of the grating 6 is set to be not higher than 0.2m/s of the flow speed of water passing through the grating.

4. The fabricated ecotype seawater intake head of claim 3, wherein: the grid is provided with an I hoisting ring, and the water collecting cylinder, the top cover, the tray and the base are provided with a II hoisting ring.

5. The fabricated ecotype seawater intake head of claim 4, wherein: the material of the gas distribution pipe is duplex stainless steel or plastic pipe.

6. The fabricated ecotype seawater intake head of claim 5, wherein: the water collecting cylinder, the top cover and the base are of prestressed reinforced concrete structures.

7. The fabricated ecotype seawater taking head of claim 6, wherein: the tray and the cylinder are of a prestressed steel cylinder concrete structure.

8. The fabricated ecotype seawater intake head of claim 7, wherein: the lower port of the barrel is connected with the base in a cast-in-place mode, and the top plate is integrally prefabricated, cast and connected with the bottom plate through the outer stand column and the inner stand column.