CN215570563U

CN215570563U - Waste heat recovery integrated heat exchange device

Info

Publication number: CN215570563U
Application number: CN202120918908.6U
Authority: CN
Inventors: 李小东
Original assignee: Shanxi Yizhongxin New Energy Co ltd
Current assignee: Shanxi Yizhongxin New Energy Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2022-01-18
Anticipated expiration: 2031-04-29

Abstract

The utility model discloses a waste heat recovery integrated heat exchange device, and relates to the technical field of heat exchange devices. The structure of the utility model comprises an insulation can, a water tank, a heat conduction pipe, a branch pipe and a header pipe, wherein the water tank is arranged in a cavity of the insulation can, a first temperature sensor is arranged on the top side wall of the cavity of the water tank, and a second temperature sensor is arranged on the bottom side wall of the cavity of the water tank; the heat conducting pipe is coiled on the water tank; the left part of the branch pipe is provided with a third electromagnetic valve which controls the conduction of the branch pipe, a third temperature sensor is arranged in a pipe hole at the right part of the branch pipe, the third temperature sensor senses the temperature of the flue gas in the branch pipe, a row of the branch pipes are provided with a plurality of branch pipes which are all fixed in through holes in the left wall of the heat insulation box, and the right end of each branch pipe is communicated with a heat conduction pipe at the same level; the main pipe is fixed on the left side wall of the heat preservation box, and the left ends of the branch pipes are fixed in the through holes in the right wall of the main pipe. The utility model prevents the flue gas from absorbing the heat of water.

Description

Waste heat recovery integrated heat exchange device

Technical Field

The utility model relates to the technical field of heat exchange devices, in particular to a waste heat recovery integrated heat exchange device.

Background

The boiler is an energy conversion device, the energy input to the boiler comprises chemical energy and electric energy in fuel, and the boiler outputs steam, high-temperature water or an organic heat carrier with certain heat energy. The heat in the flue gas released by the combustion of the fuel can also be transferred by utilizing a heat exchanger. The waste heat is also in the flue gas discharged from the heat exchanger, the heat of the waste heat is insufficient, the heat utilization value is not high, the waste heat is generally directly discharged, and the waste heat can be utilized for water body heat preservation.

The patent with application number 202020532005.X provides a waste heat recovery heat exchange device, the structure of the patent comprises a flue gas channel, two ends of the flue gas channel are respectively provided with a smoke inlet and a smoke outlet; the heat exchange structure is arranged on the outer side of the flue gas channel and is used for recovering flue gas waste heat; the heat exchange structure includes: the waste heat recovery channel is used for liquid flowing; a liquid inlet and a liquid outlet are respectively arranged at two ends of the waste heat recovery channel; the fixing strips are uniformly arranged in the waste heat recovery channel along the circumferential direction; the blocking rings are uniformly arranged in the waste heat recovery channel along the axial direction, are fixedly connected with the fixing strips and are used for slowing down the flow velocity of liquid; each stop ring is provided with a notch, and the notches are uniformly distributed in the waste heat recovery channel along a spiral shape. This patent can delay the velocity of flow of liquid in the heat transfer device, prolongs the dwell time of liquid in heat transfer device, and then improves heat exchange efficiency. However, the residual heat in the flue gas is not necessarily higher than the liquid temperature, and if the flue gas temperature is lower than the liquid temperature, the liquid loses heat.

Accordingly, one skilled in the art provides a subject to solve the problems set forth in the background above.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the heat exchange device in the prior art cannot judge whether the waste heat of the flue gas has a useful value.

In order to solve the technical problems, the utility model provides a waste heat recovery and integration heat exchange device which comprises an insulation can, a water tank, a heat conduction pipe, branch pipes and a header pipe, wherein the insulation can is in a cylindrical shell structure; the water tank is of a cylindrical shell structure and is arranged in a cavity of the heat insulation box, a first temperature sensor is arranged on the top side wall of the cavity of the water tank, a second temperature sensor is arranged on the bottom side wall of the cavity of the water tank, the first temperature sensor senses the heat of the upper-layer hot water, and the second temperature sensor senses the heat of the lower-layer cold water; the heat conduction pipe is of a spiral pipeline structure, the heat conduction pipe is wound on the water tank, and the smoke conducted in the heat conduction pipe flows from bottom to top; the branch pipe is of a cylindrical tubular structure, a third electromagnetic valve is arranged at the left part of the branch pipe and controls the conduction of the branch pipe, a third temperature sensor is arranged in a pipe hole at the right part of the branch pipe and senses the temperature of smoke in the branch pipe, a plurality of branch pipes are arranged in a row and are all fixed in a through hole in the left wall of the heat insulation box, the right end of each branch pipe is communicated with a heat conduction pipe at the same level, and the smoke in the heat conduction pipes flows out of the branch pipes; the main pipe is of a cylindrical barrel-shaped structure, the main pipe is fixed on the left side wall of the heat insulation box, the left end of the branch pipe is fixed in a through hole in the right wall of the main pipe, and smoke in the branch pipe flows into the main pipe.

As a further scheme of the utility model: and a heat insulation material is filled in the interlayer of the heat insulation box, and the heat insulation material plays a role in heat insulation.

As a further scheme of the utility model: an air inlet pipe is fixed in a through hole of the front lower wall of the heat insulation box, the rear end of the air inlet pipe is communicated with the bottom end of the heat conduction pipe, a flue gas pipeline is connected with the air inlet pipe, and the air inlet pipe guides flue gas into the heat conduction pipe.

As a further scheme of the utility model: and a hot water pipe is fixed in the through hole of the top wall of the heat insulation box, the bottom end part of the hot water pipe is inserted into the cavity of the water tank, and hot water is led in or out from the hot water pipe.

As a further scheme of the utility model: a cold water pipe is fixed in a through hole of the right lower wall of the heat preservation box, the left end part of the cold water pipe is inserted into a cavity of the water tank, and cold water flows in or out from the cold water pipe.

As a further scheme of the utility model: the hot water pipe is provided with a first electromagnetic valve, and the first electromagnetic valve controls the conduction of the hot water pipe.

As a further scheme of the utility model: and a second electromagnetic valve is arranged on the cold water pipe and controls the conduction of the cold water pipe.

As a further scheme of the utility model: the top spiro union of house steward has waterproof pipe, waterproof pipe is the tubular structure of L type, waterproof pipe prevents that the rainwater from falling into in the house steward.

As a further scheme of the utility model: and a filter element is arranged in a hole at the bottom of the waterproof pipe and filters dust and harmful gas in the smoke.

As a further scheme of the utility model: and a branch net is fixed at the top end of the tube hole of the main pipe and prevents the filter element from falling into the main pipe.

As a further scheme of the utility model: the rear wall cavity of the heat insulation box is internally provided with a control circuit, the control circuit is electrically connected with the temperature sensor and the electromagnetic valve, and the control circuit controls the device to operate.

The utility model has the beneficial effects that:

(1) the utility model is provided with branch pipes, a first temperature sensor senses the temperature of upper layer hot water in a water tank, and a second temperature sensor senses the temperature of lower layer cold water in the water tank; the flue gas flows into the heat conducting pipe from the gas inlet pipe, the flue gas flows into one branch pipe at the bottom layer, a third temperature sensor in the branch pipe senses the temperature of the flue gas, if the temperature value is lower than the temperature of lower-layer cold water, a third electromagnetic valve on the branch pipe is opened, and the flue gas directly flows into the main pipe from the branch pipe; if the temperature value is higher than the temperature of the lower layer cold water, the smoke gas spirals along the heat conduction pipe to flow upwards, the water in the water tank absorbs heat through the heat conduction pipe, when the smoke gas flows through one branch pipe on the upper layer, the temperature value sensed by the third temperature sensor in the branch pipe is lower than the temperature value flowing through the branch pipe on the lower layer, and then the third electromagnetic valve on the branch pipe is opened. The utility model prevents the flue gas from absorbing the heat of water.

(2) The smoke in the main pipe upwards flows into the waterproof pipe, and the filter element absorbs dust and harmful gas in the smoke, so that the filtered gas is discharged from the left end of the waterproof pipe. The utility model has the function of purifying the smoke.

Drawings

FIG. 1 is a perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention.

Wherein: the water heater comprises an insulation can 10, insulation materials 11, a water tank 12, a hot water pipe 13, a first electromagnetic valve 14, a cold water pipe 15, a second electromagnetic valve 16, a first temperature sensor 17, a second temperature sensor 18, a heat conduction pipe 19, a branch pipe 20, a third temperature sensor 21, a third electromagnetic valve 22, a main pipe 23, a waterproof pipe 24, a filter element 25, a branch net 26 and an air inlet pipe 27.

Detailed Description

The structure of the waste heat recovery integrated heat exchange device provided by this embodiment is shown in fig. 1-2, and includes an insulation can 10, a water tank 12, a heat pipe 19, branch pipes 20, and a header pipe 23, where the insulation can 10 is a cylindrical shell structure; the water tank 12 is of a cylindrical shell structure, the water tank 12 is arranged in a cavity of the heat insulation box 10, a first temperature sensor 17 is arranged on the top side wall of the cavity of the water tank 12, a second temperature sensor 18 is arranged on the bottom side wall of the cavity of the water tank 12, the first temperature sensor 17 senses the heat of hot water on the upper layer, and the second temperature sensor 18 senses the heat of cold water on the lower layer; the heat conduction pipe 19 is in a spiral pipeline structure, the heat conduction pipe 19 is wound on the water tank 12, and the flue gas conducted in the heat conduction pipe 19 flows from bottom to top; the branch pipe 20 is of a cylindrical tubular structure, a third electromagnetic valve 22 is arranged at the left part of the branch pipe 20, the third electromagnetic valve 22 controls the conduction of the branch pipe 20, a third temperature sensor 21 is arranged in a pipe hole at the right part of the branch pipe 20, the third temperature sensor 21 senses the temperature of smoke in the branch pipe 20, a plurality of branch pipes 20 are arranged in a row and are all fixed in a through hole in the left wall of the insulation can 10, the right end of each branch pipe 20 is respectively communicated with a heat conduction pipe 19 at the same level, and the smoke in the heat conduction pipe 19 flows out of the branch pipe 20; the main pipe 23 is a cylindrical barrel-shaped structure, the main pipe 23 is fixed on the left side wall of the insulation can 10, the left end of the branch pipe 20 is fixed in a through hole on the right wall of the main pipe 23, and the flue gas in the branch pipe 20 flows into the main pipe 23.

The interlayer of the heat preservation box 10 is filled with a heat preservation material 11, and the heat preservation material 11 plays a role in heat insulation.

An air inlet pipe 27 is fixed in a through hole of the front lower wall of the heat insulation box 10, the rear end of the air inlet pipe 27 is communicated with the bottom end of the heat conduction pipe 19, a flue gas pipeline is connected with the air inlet pipe 27, and the flue gas is guided into the heat conduction pipe 19 through the air inlet pipe 27.

A hot water pipe 13 is fixed in a through hole of the top wall of the heat insulation box 10, the bottom end part of the hot water pipe 13 is inserted into the cavity of the water tank 12, and hot water is led in or led out from the hot water pipe 13.

A cold water pipe 15 is fixed in a through hole of the right lower wall of the heat preservation box 10, the left end part of the cold water pipe 15 is inserted into the cavity of the water tank 12, and cold water flows in or out from the cold water pipe 15.

The hot water pipe 13 is provided with a first electromagnetic valve 14, and the first electromagnetic valve 14 controls the conduction of the hot water pipe 13.

The cold water pipe 15 is provided with a second electromagnetic valve 16, and the second electromagnetic valve 16 controls the conduction of the cold water pipe 15.

The top end of the main pipe 23 is screwed with a waterproof pipe 24, the waterproof pipe 24 is of an L-shaped tubular structure, and the waterproof pipe 24 prevents rainwater from falling into the main pipe 23.

And a filter element 25 is arranged in a bottom pipe hole of the waterproof pipe 24, and the filter element 25 filters dust and harmful gas in smoke.

The top ends of the tube holes of the main pipe 23 are fixed with branch nets 26, and the branch nets 26 prevent the filter cores 25 from falling into the main pipe 23.

A control circuit is arranged in a cavity of the rear wall of the heat insulation box 10, the control circuit is electrically connected with the temperature sensor and the electromagnetic valve, and the control circuit controls the operation of the device.

The working principle of the utility model is as follows: when the temperature control device is used, the first temperature sensor 17 senses the temperature of hot water at the upper layer in the water tank 12, and the second temperature sensor 18 senses the temperature of cold water at the lower layer in the water tank 12; the flue gas flows into the heat conducting pipe 19 from the air inlet pipe 27, the flue gas flows into one branch pipe 20 at the bottom layer, the temperature of the flue gas is sensed by the temperature sensor 21 in the branch pipe 20, if the temperature value is lower than that of the cold water at the lower layer, the electromagnetic valve 22 in the branch pipe 20 is opened, and the flue gas directly flows into the main pipe 23 from the branch pipe 20; if the temperature value is higher than the temperature of the cold water at the lower layer, the flue gas flows upwards along the spiral of the heat conduction pipe 19, the water in the water tank 12 absorbs heat through the heat conduction pipe 19, when the flue gas flows through one branch pipe 20 at the upper layer, the temperature value sensed by the temperature sensor 21 in the branch pipe 20 is lower than the temperature value flowing through the branch pipe 20 at the lower layer, and the electromagnetic valve 22 at the branch pipe 20 is opened; the flue gas in the header pipe 23 flows upwards into the waterproof pipe 24, and the filter element 25 absorbs dust and harmful gas in the flue gas, so that the filtered gas is discharged from the left end of the waterproof pipe 24. The utility model prevents the flue gas from absorbing the heat of water.

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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The waste heat recovery integrated heat exchange device is characterized by comprising an insulation box (10), a water tank (12), a heat conduction pipe (19), branch pipes (20) and a header pipe (23), wherein the insulation box (10) is of a cylindrical shell structure; the water tank (12) is of a cylindrical shell structure, the water tank (12) is arranged in a cavity of the heat insulation box (10), a first temperature sensor (17) is arranged on the top side wall of the cavity of the water tank (12), a second temperature sensor (18) is arranged on the bottom side wall of the cavity of the water tank (12), the first temperature sensor (17) senses the heat of the upper-layer hot water, and the second temperature sensor (18) senses the heat of the lower-layer cold water; the heat conduction pipe (19) is of a spiral pipeline structure, the heat conduction pipe (19) is wound on the water tank (12), and smoke conducted in the heat conduction pipe (19) flows from bottom to top; the branch pipe (20) is of a cylindrical tubular structure, a third electromagnetic valve (22) is arranged at the left part of the branch pipe (20), the third electromagnetic valve (22) controls the conduction of the branch pipe (20), a third temperature sensor (21) is arranged in a pipe hole at the right part of the branch pipe (20), the third temperature sensor (21) senses the temperature of smoke in the branch pipe (20), a plurality of branch pipes (20) are arranged in a row and are all fixed in a through hole in the left wall of the heat insulation box (10), the right end of each branch pipe (20) is respectively communicated with a heat conduction pipe (19) at the same level, and the smoke in the heat conduction pipe (19) flows out of the branch pipe (20); the main pipe (23) is of a cylindrical barrel-shaped structure, the main pipe (23) is fixed on the left side wall of the heat insulation box (10), the left end of the branch pipe (20) is fixed in a through hole in the right wall of the main pipe (23), and smoke in the branch pipe (20) flows into the main pipe (23).

2. The integrated heat exchange device for waste heat recovery according to claim 1, wherein: the heat insulation box is characterized in that a heat insulation material (11) is filled in an interlayer of the heat insulation box (10), and the heat insulation material (11) plays a role in heat insulation.

3. The integrated heat exchange device for waste heat recovery according to claim 1, wherein: an air inlet pipe (27) is fixed in a through hole of the front lower wall of the heat preservation box (10), the rear end of the air inlet pipe (27) is communicated with the bottom end of the heat conduction pipe (19), a flue gas pipeline is connected with the air inlet pipe (27), and flue gas is guided into the heat conduction pipe (19) through the air inlet pipe (27).

4. The integrated heat exchange device for waste heat recovery according to claim 1, wherein: a hot water pipe (13) is fixed in a through hole of the top wall of the heat preservation box (10), the bottom end part of the hot water pipe (13) is inserted into a cavity of the water tank (12), and hot water is led in or led out from the hot water pipe (13).

5. The integrated heat exchange device for waste heat recovery according to claim 1, wherein: a cold water pipe (15) is fixed in a through hole of the right lower wall of the heat preservation box (10), the left end part of the cold water pipe (15) is inserted into a cavity of the water tank (12), and cold water flows in or out from the cold water pipe (15).