CN216307844U

CN216307844U - Flue gas waste heat recovery device

Info

Publication number: CN216307844U
Application number: CN202122890729.9U
Authority: CN
Inventors: 常学军
Original assignee: Shanghai Merit Energy Technology Co ltd
Current assignee: Zhejiang Retuo Energy Saving Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-04-15
Anticipated expiration: 2031-11-24

Abstract

The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery device. The technical scheme comprises the following steps: coil pipe and box, the inside top of box is fixed with the connecting tube, the dovetail groove has been seted up to the connecting tube surface, and the both sides top of box is passed respectively at the both ends of connecting tube, box one side top is fixed with admission line, box opposite side top is fixed with the pipeline of giving vent to anger, the coil pipe suit is on the connecting tube, the both sides below of box is passed respectively at the both ends of coil pipe, box one side below is fixed with first joint, box opposite side below is fixed with the second and connects. The utility model has the advantages that the trapezoidal groove increases the heat dissipation area of the outer surface of the connecting pipeline and improves the waste heat recovery efficiency of the flue gas.

Description

Flue gas waste heat recovery device

Technical Field

The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery device.

Background

The waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the energy consumption device of the put-in-operation industrial enterprise due to the limitations of factors such as history, technology, concept and the like. The method comprises the steps of high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like.

For the flue gas, the flue gas contains a large amount of heat energy, the waste of the heat energy can be caused by directly discharging the flue gas, and the heat energy in the flue gas is recovered through the waste heat recovery device. The coil pipe is sleeved on the flue gas pipeline, and heat energy in the flue gas is transferred to water in the coil pipe, so that the water is heated to finish heat exchange.

The heat dissipation area of the surface of a general flue gas pipeline is limited, the heat energy exchange in the flue gas cannot be maximized, and a small amount of heat energy is wasted.

Disclosure of Invention

The utility model aims to provide a flue gas waste heat recovery device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a flue gas waste heat recovery device, includes coil pipe and box, the inside top of box is fixed with the connecting tube, the dovetail groove has been seted up to the connecting tube surface, and the both sides top of box is passed respectively at the both ends of connecting tube, box one side top is fixed with the admission line, box opposite side top is fixed with the pipeline of giving vent to anger, the coil pipe suit is on the connecting tube, the both sides below of box is passed respectively at the both ends of coil pipe, box one side below is fixed with first joint, box opposite side below is fixed with the second and connects.

Preferably, a base is fixed at the bottom end of the box body. The base supports the box body, and the bottom end of the box body is prevented from directly contacting the ground.

Preferably, twelve trapezoidal grooves are formed in the outer surface of the connecting pipeline in an annular array, and the large openings of the trapezoidal grooves face outwards. The dovetail groove increases the heat radiating area of the outer surface of the connecting pipeline, and the waste heat recovery efficiency of the flue gas is improved.

Preferably, the air inlet pipeline, the connecting pipeline and the air outlet pipeline are communicated in sequence. The flue gas enters the connecting pipeline from the gas inlet pipeline, and the flue gas after heat exchange is discharged from the gas outlet pipeline.

Preferably, the first joint, the coil pipe and the second joint are communicated in sequence. Cold water enters the coil from the first joint, the cold water flows in the coil, and hot water is discharged from the second joint.

Preferably, the upper end, the lower end, the two sides and the rear end of the inner wall of the box body are respectively fixedly attached with a first heat-insulating pad. The first heat-insulating pad reduces the heat dissipation in the box body.

Preferably, the two sides of the front surface of the box body are respectively and rotatably provided with a box door, the back surface of the box door is fixedly attached with a second heat-insulating pad, and the two box doors seal the opening of the front surface of the box body. The second heat preservation pad reduces the inside heat dissipation of box.

Compared with the prior art, the utility model has the beneficial effects that: twelve trapezoidal grooves are arranged on the outer surface of the connecting pipeline in an annular array, and the large openings of the trapezoidal grooves face outwards. The flue gas gets into the connecting tube from the admission line in, cold water enters into the coil pipe from first joint in, cold water flows in the coil pipe, and the heat energy in the flue gas outwards gives off the cold water of transmission in the coil pipe in the connecting tube, makes cold water heat-up become hot water, and hot water discharges from the second joint, and the flue gas after the heat transfer is discharged from the pipeline of giving vent to anger. The dovetail groove increases the heat radiating area of the outer surface of the connecting pipeline, and the waste heat recovery efficiency of the flue gas is improved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the connection structure in elevation section according to the present invention;

FIG. 3 is a schematic side view of the connecting pipe of the present invention;

fig. 4 is a rear view of the connection structure of the box door of the present invention.

In the figure: 1. a base; 2. a box door; 3. a first joint; 4. an air intake duct; 5. an air outlet pipe; 6. a second joint; 7. connecting a pipeline; 8. a coil pipe; 9. a box body; 10. a first thermal insulation pad; 11. a trapezoidal groove; 12. a second heat-insulating pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1 to 3, an embodiment of the present invention includes: the utility model provides a flue gas waste heat recovery device, includes coil pipe 8 and box 9, and box 9 bottom mounting has base 1, and base 1 supports box 9, avoids box 9 bottom direct contact ground. Connecting pipeline 7 is fixed above the inside of box 9, two ends of connecting pipeline 7 pass through the upper portions of two sides of box 9 respectively, air inlet pipeline 4 is fixed above one side of box 9, air outlet pipeline 5 is fixed above the other side of box 9, and air inlet pipeline 4, connecting pipeline 7 and air outlet pipeline 5 are communicated in sequence.

8 suits of coil pipe are on connecting tube 7, and the both ends of coil pipe 8 are passed from the both sides below of box 9 respectively, and box 9 one side below is fixed with first joint 3, and box 9 opposite side below is fixed with the second and connects 6, and first joint 3, coil pipe 8 and second connect 6 and communicate in proper order.

Flue gas gets into connecting tube 7 from inlet tube 4 in, cold water gets into in the coil pipe 8 from first joint 3, and cold water flows in coil pipe 8, and the heat energy in the flue gas outwards gives off the cold water that transmits in the coil pipe 8 in the connecting tube 7, makes cold water heat-up become hot water, and hot water is discharged from second joint 6, and the flue gas after the heat transfer is discharged from outlet duct 5.

Trapezoidal groove 11 has been seted up to connecting tube 7 surface, and connecting tube 7's surface is the annular array and has seted up twelve trapezoidal grooves 11, and the big opening in trapezoidal groove 11 is outside, and trapezoidal groove 11 increases the heat radiating area of connecting tube 7 surface, improves the waste heat recovery efficiency of flue gas.

Example 2

Referring to fig. 2 and 4, an embodiment of the present invention is shown: the utility model provides a flue gas waste heat recovery device, the upper and lower both ends, both sides and the rear end of box 9 inner wall laminate respectively and are fixed with first heat preservation pad 10, and first heat preservation pad 10 reduces giving off of heat in the box 9. Two sides of the front surface of the box body 9 are respectively rotatably provided with the box doors 2, the back surfaces of the box doors 2 are fixedly attached with second heat-insulating pads 12, the front openings of the box body 9 are sealed by the two box doors 2, and the second heat-insulating pads 12 reduce the emission of heat in the box body 9.

The working principle is as follows: flue gas gets into connecting tube 7 from inlet tube 4 in, cold water gets into in the coil pipe 8 from first joint 3, and cold water flows in coil pipe 8, and the heat energy in the flue gas outwards gives off the cold water that transmits in the coil pipe 8 in the connecting tube 7, makes cold water heat-up become hot water, and hot water is discharged from second joint 6, and the flue gas after the heat transfer is discharged from outlet duct 5.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a flue gas waste heat recovery device, includes coil pipe (8) and box (9), box (9) one side top is fixed with admission line (4), box (9) opposite side top is fixed with pipeline (5) of giving vent to anger, coil pipe (8) suit is on connecting tube (7), the both ends of coil pipe (8) are passed from the both sides below of box (9) respectively, box (9) one side below is fixed with first joint (3), box (9) opposite side below is fixed with second joint (6), its characterized in that: connecting pipeline (7) are fixed above the interior of box body (9), trapezoidal groove (11) is opened on the outer surface of connecting pipeline (7), and two ends of connecting pipeline (7) pass through the upper portions of two sides of box body (9) respectively.

2. The flue gas waste heat recovery device according to claim 1, characterized in that: the bottom end of the box body (9) is fixed with a base (1).

3. The flue gas waste heat recovery device according to claim 1, characterized in that: the outer surface of the connecting pipeline (7) is in an annular array and is provided with twelve trapezoidal grooves (11), and the large openings of the trapezoidal grooves (11) face outwards.

4. The flue gas waste heat recovery device according to claim 1, characterized in that: the air inlet pipeline (4), the connecting pipeline (7) and the air outlet pipeline (5) are communicated in sequence.

5. The flue gas waste heat recovery device according to claim 1, characterized in that: the first joint (3), the coil pipe (8) and the second joint (6) are communicated in sequence.

6. The flue gas waste heat recovery device according to claim 1, characterized in that: the upper end, the lower end, the two sides and the rear end of the inner wall of the box body (9) are respectively fixedly attached with a first heat preservation pad (10).

7. The flue gas waste heat recovery device according to claim 1, characterized in that: the refrigerator is characterized in that two sides of the front surface of the refrigerator body (9) are respectively rotatably provided with a refrigerator door (2), a second heat insulation pad (12) is fixedly attached to the back surface of the refrigerator door (2), and the two refrigerator doors (2) seal the opening of the front surface of the refrigerator body (9).