CN209891242U

CN209891242U - Direct-buried underground belt metal lining layer concrete air duct for boiler room

Info

Publication number: CN209891242U
Application number: CN201920177706.3U
Authority: CN
Inventors: 王广海; 李艳春; 孙淑慧; 杨静; 郭辉
Original assignee: TIANJIN THERMAL POWER DESIGNING INSTITUTE Co Ltd
Current assignee: TIANJIN THERMAL POWER DESIGNING INSTITUTE Co Ltd
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-01-03
Anticipated expiration: 2029-01-30

Abstract

The utility model relates to a direct-buried underground concrete air duct with a metal lining layer for a boiler room, which comprises a concrete air duct, wherein the concrete air duct consists of a concrete groove with a square section which is horizontally arranged underground and a concrete cover plate which is covered on the concrete groove in a sealing way, and the cover plate is level with the ground; is characterized in that a metal lining layer is arranged inside the concrete air duct; the metal lining layer is a square section metal plate air duct matched with the concrete air duct; gaps are reserved between two side walls of the metal plate air duct and the corresponding side walls of the concrete grooves respectively, the gaps are 2-3cm, and cement filling layers are arranged in the gaps; the inner surface and the outer surface of the metal plate air duct are both provided with an anticorrosive coating; the metal lining layer is made of carbon structural steel. The utility model has the advantages that: the floor area of the air channel is reduced, and the space utilization rate of the boiler room is improved.

Description

Direct-buried underground belt metal lining layer concrete air duct for boiler room

Technical Field

The utility model relates to a boiler room is with wind channel technical field especially involves a boiler room is with directly burying underground belt metal lining layer concrete wind channel.

Background

Many of the existing boiler room air ducts adopt a concrete air duct structure laid underground, and as shown in fig. 1, the concrete air duct is composed of a square concrete groove 22a laid underground and a concrete cover plate 21a covered on the square concrete groove in a sealing manner, and the cover plate is flush with the ground 1. However, the main defects of the concrete air duct are that the air duct has large cross section, large volume and large floor area because the surface of the concrete air duct is rough, the friction coefficient is high, the friction resistance is large, and the air duct flow velocity cannot be too high to avoid overlarge power consumption of a fan. The space of the boiler room is narrow, and the requirement on the size of an air channel is strict in order to realize scientific utilization of the whole space. Aiming at the problems, the problem of attention in the industry is solved by how to overcome the defect of high friction coefficient of a cement pipeline, improve the flow rate of an air channel without increasing the output of a fan, reduce the volume and the occupied area of the air channel in a boiler room and solve the problem of the attention in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at improves on current concrete air duct structure basis to above-mentioned problem, provides a boiler room with directly burying underground belt metal lining layer concrete wind channel to, make the wind channel coefficient of friction reduce, the wind channel velocity of flow improves, can reduce the wind channel size greatly, reduces area, improves the space utilization in boiler room.

The utility model provides a technical scheme that its technical problem adopted is:

a direct-buried underground concrete air duct with a metal lining for a boiler room comprises a concrete air duct, wherein the concrete air duct is composed of a concrete groove with a square section and a concrete cover plate, the concrete groove is horizontally arranged in the ground, the concrete cover plate is covered on the concrete groove in a sealing mode, and the concrete cover plate is flush with the ground; the concrete air duct is characterized in that a metal lining layer is arranged inside the concrete air duct.

The metal lining layer is a square-section metal plate air duct matched with the concrete air duct, gaps are reserved between two side walls of the metal plate air duct and the corresponding side walls of the concrete groove respectively, and a cement filling layer is arranged in the gaps.

And the gap between the two side walls of the metal plate air duct and the corresponding side wall of the concrete groove is 2-3 cm.

And the inner surface and the outer surface of the metal plate air duct are both provided with an anticorrosive coating.

The metal lining layer is made of carbon structural steel.

The utility model has the advantages that: compared with the prior art, the utility model provides a take metal lining layer concrete wind channel, owing to add the metal lining on current concrete wind channel structure basis, the metal lining adopts one square cross section metal sheet wind channel that matches with the concrete wind channel in the actual preparation, make the wind channel coefficient of friction reduce like this, the wind channel velocity of flow improves, and can reduce the wind channel size greatly, reduce area, through the use practice testimony, compare with prior art, 20% area can be practiced thrift under the same condition, improve the space utilization in boiler room.

Drawings

FIG. 1 is a schematic structural diagram of a direct-buried underground concrete air duct for a boiler room in the prior art;

fig. 2 is the utility model provides a boiler room is with structural schematic diagram of buried underground belt metal lining layer concrete wind channel.

In the figure:

1 ground, 2 concrete air ducts, 21 concrete cover plates, 22 concrete grooves, 3 soil, 4 cement filling layers and 5 metal plate air ducts; 2a concrete air duct, 21a concrete cover plate and 22a concrete groove.

The present invention is described in detail below with reference to the attached drawings and examples.

Detailed Description

Fig. 2 shows a directly-buried underground concrete air duct with a metal lining for a boiler room, which comprises a concrete air duct 2, wherein the concrete air duct is composed of a concrete groove 22 with a square section and a concrete cover plate 21, the concrete groove 22 is horizontally laid in the ground, and the concrete cover plate 21 is covered on the concrete groove in a sealing mode, and the concrete cover plate 21 is flush with the ground 1; the utility model is characterized in that the inside metal lining that sets up of concrete wind channel 2.

The utility model discloses a further characterized in that the metal lining is a square cross-section metal sheet wind channel 5 that matches with the concrete wind channel, the both sides wall in metal sheet wind channel 5 respectively with the lateral wall of the concrete slot 22 that corresponds between be kept with the clearance set up cement filling layer 4 in the clearance. The gap between the two side walls of the metal plate air duct and the corresponding side wall of the concrete groove is 2-3 cm.

The utility model is also characterized in that the outside all is equipped with anticorrosive coating in the metal sheet wind channel, ensures like this that the metal sheet is not corroded increase of service life in using.

In actual manufacturing, the material of the metal lining layer is carbon structural steel, for example, Q235B carbon structural steel can be used. That is, the metal plate air duct is formed by welding and connecting carbon structural steel plates, and the inner surface and the outer surface of the air duct are both provided with anticorrosive coatings. The gap between the two side walls of the metal plate air duct 5 and the corresponding side wall of the concrete groove 22 is 2-3 cm. The gap is arranged so that the metal plate air duct can penetrate into the concrete air duct conveniently, and the cement filling layer 4 is arranged in the gap so that the metal plate air duct 5 can be reliably fixed inside the concrete air duct 2 in a sealing and stable manner.

To sum up, can see, compare with prior art, the utility model provides a take metal lining layer concrete wind channel, owing to add the metal lining layer on current concrete wind channel structure basis, the metal lining layer adopts a square cross-section metal sheet wind channel that matches with the concrete wind channel in the actual preparation, makes wind channel coefficient of friction reduce like this, the wind channel velocity of flow improves to can reduce the wind channel size greatly, reduce area, through the use practice proves, compare with prior art, can practice thrift 20% area under the same condition, improve the space utilization in boiler room.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the structure and shape of the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A direct-buried underground concrete air duct with a metal lining for a boiler room comprises a concrete air duct, wherein the concrete air duct is composed of a concrete groove with a square section and a concrete cover plate, the concrete groove is horizontally arranged in the ground, the concrete cover plate is covered on the concrete groove in a sealing mode, and the concrete cover plate is flush with the ground; the concrete air duct is characterized in that a metal lining layer is arranged inside the concrete air duct.

2. The direct-buried underground concrete air duct with the metal lining for the boiler room as claimed in claim 1, wherein the metal lining is a square-section metal plate air duct matched with the concrete air duct, gaps are respectively kept between two side walls of the metal plate air duct and the corresponding side walls of the concrete groove, and a cement filling layer is arranged in the gaps.

3. The direct-buried underground concrete air duct with the metal lining for the boiler room as claimed in claim 2, wherein the gap between the two side walls of the metal plate air duct and the corresponding side wall of the concrete groove is 2-3 cm.

4. The buried underground concrete air duct with the metal lining for the boiler room as claimed in claim 2 or 3, wherein the metal plate air duct is provided with an anti-corrosion coating on the inner and outer surfaces.

5. The direct-buried underground concrete air duct with the metal lining for the boiler room as claimed in claim 4, wherein the metal lining is made of carbon structural steel.

6. The direct-buried underground concrete air duct with the metal lining for the boiler room as claimed in claim 1, 2 or 3, wherein the metal lining is made of carbon structural steel.