CN210292326U

CN210292326U - Exhaust heat recovery device of gas-fired boiler

Info

Publication number: CN210292326U
Application number: CN201921058369.2U
Authority: CN
Inventors: 高树营; 于立春; 高博
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-04-10
Anticipated expiration: 2029-07-08

Abstract

The utility model discloses a gas boiler exhaust steam heat recovery unit belongs to energy-concerving and environment-protective equipment technical field, including gas boiler, still including heat absorber, heat exchange assemblies, exhaust steam subassembly and maintenance subassembly, both ends are equipped with steam inlet end and exhaust steam end respectively about the heat absorber, and heat exchange assemblies sets up on the heat absorber, and gas boiler's right-hand member is equipped with the exhaust steam pipe way rather than inside intercommunication, and the steam inlet end of maintaining subassembly and heat absorber all is linked together with the exhaust steam pipe way, and the exhaust steam subassembly is including connecting tube, frequency conversion draught fan and the mounting bracket of setting in the connecting tube way. The beneficial effects of the utility model are that can make the medium enter into to the heat absorber in and absorb the heat in the heat absorber and change and take out the heat through heat exchange assembly to can be when maintaining this device through maintaining the subassembly, get off at the effect of maintaining the pipeline and make steam boiler can carry out normal use, need not to shut down steam boiler, brought the convenience for the worker.

Description

Exhaust heat recovery device of gas-fired boiler

Technical Field

The utility model relates to an energy-concerving and environment-protective equipment technical field specifically relates to a steam-fired boiler exhaust heat recovery unit.

Background

With the rapid development of national economic construction, a series of legal and regulatory requirements for protecting the environment, preventing and treating pollution, saving energy, reducing emission, improving the resource utilization rate and the like become the guiding core of energy policy establishment in China. Many users, especially residential districts, hotels, leisure centers, food processing, medical and health industries in large and medium-sized cities, have changed small and medium-sized gas boilers using natural gas as fuel. According to statistics and publication of national energy department data in recent years, more than 8 thousands of gas-fired boilers (about 16 thousands of steam tons) with the grade of 1.6MPa and below are newly added in China every year. 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 boiler is a water container heated on fire, a furnace is a place where fuel is combusted, and the boiler comprises a boiler and a furnace. As is known, the temperature of the waste heat discharged after combustion in the gas boiler reaches about 150 ℃, which increases the burden of the greenhouse effect in the steam without condensation and wastes heat resources, the traditional exhaust heat recovery device is difficult to effectively recover the discharged waste heat, and cannot utilize the heat in other heating applications for heating and washing, thereby wasting heat resources and reducing the utilization of the gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a steam-fired boiler exhaust heat recovery device is provided to solve traditional exhaust heat recovery device and be difficult to effectively retrieve the technical problem of the waste heat of emission.

In order to solve the technical problem, the utility model provides a following technical scheme: including gas boiler, still including heat absorber, heat exchange assembly, exhaust subassembly and maintenance subassembly, both ends are equipped with steam inlet end and exhaust end respectively about the heat absorber, the exhaust subassembly sets up the side at the heat absorber, and the exhaust end of exhaust subassembly and heat absorber is linked together, heat exchange assembly sets up on the heat absorber, gas boiler's right-hand member is equipped with the exhaust pipe way rather than inside intercommunication, the steam inlet end of maintaining subassembly and heat absorber all is linked together with the exhaust pipe way, the exhaust subassembly is including connecting tube, frequency conversion draught fan and the mounting bracket of setting in the connecting tube, the frequency conversion draught fan sets up on the mounting bracket, the left end of connecting tube is linked together with the exhaust end of heat absorber.

Furthermore, the steam exhaust assembly further comprises a steam exhaust chimney communicated with the inside of the connecting pipeline, the connecting pipeline is connected with the steam exhaust chimney through a flange, a first valve is arranged between the steam exhaust chimney and the connecting pipeline, and a steam inlet end of the heat absorber is provided with an on-off valve.

Furthermore, maintain the subassembly including maintaining the pipeline and setting up the second valve on maintaining the pipeline, the both ends of maintaining the pipeline are equipped with steam inlet and steam vent respectively, the steam inlet and the steam vent pipeline intercommunication of maintaining the pipeline, the steam vent and the steam exhaust chimney intercommunication of maintaining the pipeline.

Furthermore, the maintenance pipeline is connected with the steam exhaust pipeline and the steam exhaust chimney through flanges.

Furthermore, the middle section of the heat absorber is provided with a condensation discharge pipeline communicated with the interior of the heat absorber, and the condensation discharge pipeline is provided with an electromagnetic valve.

Furthermore, the heat exchange assembly comprises a medium outlet pipeline and a medium inlet pipeline, and the medium inlet pipeline and the medium outlet pipeline are both communicated with the heat absorber.

Furthermore, a third valve is arranged on each of the medium inlet pipeline and the medium outlet pipeline.

Compared with the prior art, the utility model beneficial effect who has is:

firstly, the heat exchange assembly of the utility model can make the medium enter the heat absorber and absorb the heat in the heat absorber to exchange the heat, thereby avoiding the waste of heat; the worker can enter into the heat absorber through medium inlet pipeline with the medium through opening the third valve in, and the medium passes through medium outlet pipeline and discharges, and the heat absorber can absorb gas boiler exhaust heat and exchange the heat under the effect of medium, and when the condensation state appeared in the inside of heat absorber, the worker's accessible was opened the solenoid valve and is made the vapour discharge through condensation exhaust line, and the medium that uses in this device can adopt the heat conduction oil.

Secondly, the utility model can adjust the air quantity of the frequency conversion draught fan or maintain the device through the maintenance component, the steam boiler can be normally used under the action of the maintenance pipeline, the steam boiler does not need to be shut down, and convenience is brought to workers; when will adjusting the amount of wind of frequency conversion draught fan or will maintaining this device, the worker can close the on-off valve, makes steam boiler exhaust steam enter into to maintaining the pipeline in, opens the second valve, makes the steam can enter into the steam exhaust chimney through maintaining the pipeline and supply the user to use, will close first valve simultaneously and avoid in steam backward flow to the heat absorber.

Thirdly, the utility model discloses a heat absorber and exhaust chimney can fully retrieve the heat that steam boiler produced, are used for washing one's face and rinsing one's mouth hot water or heating heat source with its heat recovery, and make full use of waste heat can play energy saving and emission reduction's effect.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a schematic partial cross-sectional view of the present invention;

fig. 5 is an enlarged view of fig. 4 at B.

The reference numbers in the figures are:

the device comprises a gas boiler 10, a steam exhaust pipeline 11, a heat absorber 20, a steam inlet end 21, a steam exhaust end 22, an on-off valve 23, a heat exchange assembly 30, a medium outlet pipeline 31, a medium inlet pipeline 32, a third valve 33, a steam exhaust assembly 40, a connecting pipeline 41, a variable-frequency induced draft fan 42, a mounting frame 43, a steam exhaust chimney 44, a first valve 45, a maintenance assembly 50, a maintenance pipeline 51, a second valve 52, a steam inlet 53, a steam exhaust 54, a condensation exhaust pipeline 60 and an electromagnetic valve 61.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 5, it can be seen that the gas boiler 10 comprises a heat absorber 20, a heat exchange assembly 30, a steam exhaust assembly 40 and a maintenance assembly 50, the left end and the right end of the heat absorber 20 are respectively provided with a steam inlet end 21 and a steam outlet end 22, the steam outlet assembly 40 is arranged at the side of the heat absorber 20, and the steam exhaust assembly 40 is communicated with the steam exhaust end 22 of the heat absorber 20, the heat exchange assembly 30 is arranged on the heat absorber 20, the right end of the gas boiler 10 is provided with a steam exhaust pipeline 11 communicated with the interior of the gas boiler, the steam inlet ends 21 of the maintenance component 50 and the heat absorber 20 are both communicated with the steam exhaust pipeline 11, the steam exhaust assembly 40 comprises a connecting pipeline 41, a variable-frequency induced draft fan 42 and a mounting rack 43 arranged in the connecting pipeline 41, the variable-frequency induced draft fan 42 is arranged on the mounting frame 43, and the left end of the connecting pipeline 41 is communicated with the steam exhaust end 22 of the heat absorber 20; can make the medium enter into heat absorber 20 and absorb the heat in heat absorber 20 through heat exchange assembly 30 and take out the heat in the heat absorber 20 in the change, thermal waste has been avoided, can be when adjusting the amount of wind of frequency conversion draught fan 42 or will maintain this device through maintaining subassembly 50, get off at the effect of maintaining pipeline 51 and make the steam boiler can carry out normal use, need not to shut down the steam boiler, bring the convenience for the worker, heat absorber 20 is no longer described herein for prior art.

Specifically, the steam exhaust assembly 40 further comprises a steam exhaust chimney 44 communicated with the inside of the connecting pipeline 41, the connecting pipeline 41 is connected with the steam exhaust chimney 44 through a flange, a first valve 45 is arranged between the steam exhaust chimney 44 and the connecting pipeline 41, and a steam inlet end 21 of the heat absorber 20 is provided with an on-off valve 23; the first valve 45 is used to control the connection between the exhaust stack 44 and the connecting pipe 41, and the first valve 45 can be closed to prevent the steam from flowing back into the heat absorber 20.

Specifically, the maintenance assembly 50 includes a maintenance pipeline 51 and a second valve 52 arranged on the maintenance pipeline 51, two ends of the maintenance pipeline 51 are respectively provided with a steam inlet 53 and a steam outlet 54, the steam inlet 53 of the maintenance pipeline 51 is communicated with the steam exhaust pipeline 11, and the steam outlet 54 of the maintenance pipeline 51 is communicated with the steam exhaust chimney 44; when the air volume of the variable-frequency induced draft fan 42 needs to be adjusted or the device needs to be maintained, an operator can close the on-off valve 23 to enable the steam discharged from the steam boiler to enter the maintenance pipeline 51, open the second valve 52 to enable the steam to enter the steam exhaust chimney 44 through the maintenance pipeline 51 for a user to use, and close the first valve 45 to prevent the steam from flowing back into the heat absorber 20.

Specifically, the maintenance pipeline 51 is connected with the steam exhaust pipeline 11 and the steam exhaust chimney 44 through flanges; the worker may flange the service conduit 51 with the exhaust conduit 11 and the exhaust stack 44 as shown in fig. 1.

Specifically, a condensation discharge pipeline 60 communicated with the interior of the heat absorber 20 is arranged at the middle section of the heat absorber, and an electromagnetic valve 61 is arranged on the condensation discharge pipeline 60; when a condensation state occurs inside the heat absorber 20, a worker can discharge the vapor through the condensation discharge duct 60 by opening the solenoid valve 61.

Specifically, the heat exchange assembly 30 includes a medium outlet pipe 31 and a medium inlet pipe 32, and both the medium inlet pipe 32 and the medium outlet pipe 31 are communicated with the heat absorber 20; the medium used in the present device may be heat conductive oil, the medium enters into the heat absorber 20 through the medium inlet pipe 32, and the medium is discharged through the medium outlet pipe 31.

Specifically, the medium inlet pipeline 32 and the medium outlet pipeline 31 are both provided with a third valve 33; the worker can feed medium into the heat absorber 20 through the medium inlet line 32 by opening the third valve 33, the medium is discharged through the medium outlet line 31, and the heat absorber 20 can absorb heat discharged from the gas boiler and exchange the heat under the action of the medium.

The utility model discloses a theory of operation: the worker starts the heat absorber 20, the worker can convey the heat conducting oil as a medium into the heat absorber 20 through the medium inlet pipeline 32 and the heat conducting oil is discharged through the medium outlet pipeline 31, the heat absorber 20 can absorb the heat discharged by the gas boiler and exchange the heat under the action of the heat conducting oil to take out the heat, the variable frequency induced draft fan 42 works to avoid the influence of the temperature difference of the heated gas to form steam resistance, the exhausted steam can reach the steam exhaust requirement of the steam boiler, and the gas is exhausted by the steam exhaust chimney 44, when the air volume of the variable-frequency induced draft fan 42 needs to be adjusted or the device needs to be maintained, an operator can close the on-off valve 23 to enable the steam discharged from the steam boiler to enter the maintenance pipeline 51, open the second valve 52 to enable the steam to enter the steam exhaust chimney 44 through the maintenance pipeline 51 for a user to use, and close the first valve 45 to prevent the steam from flowing back into the heat absorber 20.

Claims

1. The utility model provides a gas boiler exhaust steam heat recovery unit, includes gas boiler (10), its characterized in that, still including heat absorber (20), heat exchange assembly (30), steam extraction subassembly (40) and maintenance subassembly (50), both ends are equipped with steam inlet end (21) and steam extraction end (22) respectively about heat absorber (20), steam extraction subassembly (40) set up the side at heat absorber (20), and steam extraction subassembly (40) are linked together with steam extraction end (22) of heat absorber (20), heat exchange assembly (30) set up on heat absorber (20), the right-hand member of gas boiler (10) is equipped with steam extraction pipeline (11) rather than inside intercommunication, steam inlet end (21) of maintaining subassembly (50) and heat absorber (20) all are linked together with steam extraction pipeline (11), steam extraction subassembly (40) are including connecting tube (41), Frequency conversion draught fan (42) and mounting bracket (43) of setting in connecting tube (41), frequency conversion draught fan (42) set up on mounting bracket (43), the left end of connecting tube (41) is linked together with steam extraction end (22) of heat absorber (20).

2. The steam-fired boiler exhaust steam heat recovery device according to claim 1, wherein the exhaust steam assembly (40) further comprises an exhaust steam chimney (44) communicated with the inside of the connecting pipeline (41), the connecting pipeline (41) is connected with the exhaust steam chimney (44) through a flange, a first valve (45) is arranged between the exhaust steam chimney (44) and the connecting pipeline (41), and an on-off valve (23) is arranged at the steam inlet end (21) of the heat absorber (20).

3. The steam-fired boiler exhaust steam heat recovery device according to claim 1, wherein the maintenance assembly (50) comprises a maintenance pipeline (51) and a second valve (52) arranged on the maintenance pipeline (51), a steam inlet (53) and a steam outlet (54) are respectively arranged at two ends of the maintenance pipeline (51), the steam inlet (53) of the maintenance pipeline (51) is communicated with the exhaust pipeline (11), and the steam outlet (54) of the maintenance pipeline (51) is communicated with the exhaust chimney (44).

4. The steam-fired boiler exhaust steam heat recovery device according to claim 3, characterized in that the service pipe (51) is flanged to both the exhaust pipe (11) and the exhaust stack (44).

5. The steam-fired boiler exhaust heat recovery device according to claim 1, wherein the heat absorber (20) is provided at a middle section thereof with a condensation exhaust duct (60) communicated with the interior thereof, and the condensation exhaust duct (60) is provided with an electromagnetic valve (61).

6. The steam-fired boiler exhaust heat recovery device according to claim 1, wherein the heat exchange assembly (30) comprises a medium outlet conduit (31) and a medium inlet conduit (32), the medium inlet conduit (32) and the medium outlet conduit (31) both being in communication with the heat absorber (20).

7. The steam-fired boiler exhaust heat recovery device according to claim 6, characterized in that a third valve (33) is provided on both the medium inlet conduit (32) and the medium outlet conduit (31).