CN210921355U

CN210921355U - Steam boiler waste heat recovery device

Info

Publication number: CN210921355U
Application number: CN201921706717.2U
Authority: CN
Inventors: 陈飞
Original assignee: Jiangsu Kaitong Boiler And Pressure Vessel Co ltd
Current assignee: Jiangsu Kaitong Boiler And Pressure Vessel Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-03
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a steam boiler waste heat recovery device relates to steam boiler technical field, contains higher heat for solving current steam boiler exhaust flue gas, has the problem of the phenomenon of heat waste. The steam boiler's inside is provided with the combustion chamber, the combustor is installed in the outside of steam boiler, steam boiler's lower extreme is provided with the drain, one side of steam boiler upper end is provided with first exhaust port, one side of first exhaust port is provided with the main steam export, the heat exchanger is installed to steam boiler's top, one side of heat exchanger lower extreme is provided with the flue gas import, the opposite side of heat exchanger upper end is provided with the second exhaust port, one side of second exhaust port is provided with liquid inlet, the opposite side of heat exchanger lower extreme is provided with the liquid export, the water storage box is installed to the below of heat exchange tube, the water pump is installed to the front end of water.

Description

Steam boiler waste heat recovery device

Technical Field

The utility model relates to a steam boiler technical field specifically is a steam boiler waste heat recovery device.

Background

The boiler is an energy conversion device, the energy input to the boiler is in the forms of chemical energy, electric energy, heat energy of high-temperature flue gas and the like in fuel, steam, high-temperature water or an organic heat carrier with certain heat energy is output outwards after the conversion of the boiler, hot water or steam generated in the boiler can directly provide heat energy required for industrial production and people life, and can also be converted into mechanical energy through a steam power device or converted into electric energy through a generator, the boiler for providing hot water is called as a hot water boiler and is mainly used for life, and a small amount of application is also realized in industrial production. The boiler for generating steam is called as a steam boiler, often called as a boiler for short, and is widely used for thermal power stations, ships, locomotives and industrial and mining enterprises.

However, the smoke discharged by the existing steam boiler contains higher heat, so that the phenomenon of heat waste exists; therefore, the existing requirements are not met, and a steam boiler waste heat recovery device is provided for the existing requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam boiler waste heat recovery device to the current steam boiler exhaust flue gas that proposes in solving above-mentioned background art contains higher heat, has the problem of the extravagant phenomenon of heat.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a steam boiler waste heat recovery device, includes steam boiler, steam boiler's inside is provided with the combustion chamber, the combustor is installed in steam boiler's the outside, steam boiler's lower extreme is provided with the drain, one side of steam boiler upper end is provided with first exhaust port, one side of first exhaust port is provided with the main steam export, the heat exchanger is installed to steam boiler's top, one side of heat exchanger lower extreme is provided with the flue gas import, the opposite side of heat exchanger upper end is provided with the second exhaust port, one side of second exhaust port is provided with liquid inlet, the opposite side of heat exchanger lower extreme is provided with the liquid outlet, the water storage box is installed to the below of heat exchange tube, the water pump is installed.

Preferably, a smoke inlet pipeline is arranged between the first smoke outlet and the smoke inlet, and the smoke inlet pipeline is connected with the first smoke outlet and the smoke inlet through flanges.

Preferably, a plurality of baffle plates are arranged in the heat exchanger, and a heat exchange tube is arranged in the heat exchanger.

Preferably, a water level sensor is installed inside the water storage tank.

Preferably, the outside of water storage box is provided with the second heat preservation, and the second heat preservation is connected with the water storage box cementing, steam boiler's outside is provided with first heat preservation, and steam boiler and first heat preservation cementing are connected.

Preferably, the model of the water level sensor is set to be LV 30D.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a let in the inside of heat exchanger with the high temperature flue gas that steam boiler produced, fill the inside of heat exchanger through each baffling board, discharge from the second exhaust port after carrying out the heat exchange with the cold water in the heat exchange tube inside, the cold water absorbs the high temperature heat of flue gas and gets into the inside storage of water storage box through the liquid outlet after being heated, the heat of flue gas obtains abundant utilization to the waste of flue gas heat has been avoided;

2. the utility model discloses a level sensor real-time supervision water level, when the water level reachd the assigned height, cold water stops to get into, ensures that the water storage box keeps at suitable water level, and the operator monitors the water level of steam boiler inside through steam boiler's water gauge, when steam boiler inside lacks water, introduces the inside of steam boiler with the hot water after the heating through the water pump, has improved steam boiler's work efficiency greatly, makes the heat of high temperature flue gas obtain make full use of, avoids thermal waste;

3. the utility model discloses a first heat preservation and second heat preservation keep warm steam boiler and water storage box, have reduced thermal scattering and disappearing, further improve thermal utilization ratio.

Drawings

Fig. 1 is a schematic structural view of a waste heat recovery device of a steam boiler of the present invention;

fig. 2 is a schematic structural diagram of the heat exchanger of the present invention;

fig. 3 is a schematic structural view of the water storage tank of the present invention.

In the figure: 1. a steam boiler; 2. a combustion chamber; 3. a combustion engine; 4. a sewage draining outlet; 5. a first exhaust port; 6. a main steam outlet; 7. a heat exchanger; 8. a flue gas inlet; 9. a smoke inlet pipeline; 10. a baffle plate; 11. a heat exchange pipe; 12. a second smoke exhaust port; 13. a liquid inlet; 14. a liquid outlet; 15. a water storage tank; 16. a water pump; 17. a water level sensor; 18. a first insulating layer; 19. and a second insulating layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a steam boiler waste heat recovery device comprises a steam boiler 1, a combustion chamber 2 is arranged in the steam boiler 1, a burner 3 is arranged on the outer side of the steam boiler 1, a sewage discharge outlet 4 is arranged at the lower end of the steam boiler 1, a first smoke discharge outlet 5 is arranged on one side of the upper end of the steam boiler 1, high-temperature smoke is discharged through the first smoke discharge outlet 5 and enters the interior of a heat exchange tube 11 through a smoke inlet tube 9, a main steam outlet 6 is arranged on one side of the first smoke discharge outlet 5, the high-temperature steam is discharged for use through the main steam outlet 6, a heat exchanger 7 is arranged above the steam boiler 1, a smoke inlet 8 is arranged on one side of the lower end of the heat exchanger 7, a second smoke discharge outlet 12 is arranged on the other side of the upper end of the heat exchanger 7, a liquid inlet 13 is arranged on one side of the, the water pump 16 is installed at the front end of the water storage tank 15, and when the steam boiler 1 is short of water, the heated hot water in the water storage tank 15 is introduced into the steam boiler 1 through the water pump 16.

Furthermore, a smoke inlet pipeline 9 is arranged between the first smoke outlet 5 and the smoke inlet 8, the smoke inlet pipeline 9 is connected with the first smoke outlet 5 and the smoke inlet 8 through flanges, and high-temperature smoke enters the heat exchanger 7 through the smoke inlet pipeline 9.

Further, a plurality of baffle plates 10 are arranged inside the heat exchanger 7, a heat exchange tube 11 is arranged inside the heat exchanger 7, and high-temperature flue gas is discharged from a second smoke outlet 12 after being subjected to heat exchange with cold water inside the heat exchange tube 11.

Further, a water level sensor 17 is installed inside the water storage tank 15, the water level sensor 17 monitors the water level inside the water storage tank 15 in real time, and when the water level reaches a specified height, cold water stops entering, so that the water storage tank 15 is ensured to be kept at a proper water level.

Furthermore, a second heat-insulating layer 19 is arranged outside the water storage tank 15, the second heat-insulating layer 19 is connected with the water storage tank 15 in a bonding mode, a first heat-insulating layer 18 is arranged outside the steam boiler 1, the steam boiler 1 is connected with the first heat-insulating layer 18 in a bonding mode, heat insulation is conducted on the steam boiler 1 and the water storage tank 15, heat dissipation is reduced, and the heat utilization rate is further improved.

Further, the model of the water level sensor 17 is set to be LV30D, the gauge outfit can rotate three hundred sixty degrees, and the precision is high.

The working principle is as follows: when the high-temperature-resistant water level monitoring device is used, the combustor 3 works to heat liquid in the steam boiler 1 so as to generate high-temperature steam, the high-temperature steam is discharged through the main steam outlet 6 for use, high-temperature flue gas is discharged through the first smoke discharge port 5, enters the inside of the heat exchange tube 11 through the smoke inlet pipeline 9, is filled in the heat exchanger 7 through each baffle plate 10, cold water enters the heat exchange tube 11 through the second smoke discharge port 12 to obtain the inside, the high-temperature flue gas exchanges heat with cold water in the heat exchange tube 11 and then is discharged from the second smoke discharge port 12, the cold water absorbs high-temperature heat of the flue gas and then enters the water storage tank 15 through the liquid outlet 14 for storage after being heated, the water level sensor 17 monitors the water level in the water storage tank 15 in real time, when the water level reaches a designated height, the cold water stops entering, the water storage tank 15 is ensured to be kept at a proper, when the steam boiler 1 is lack of water, the heated hot water in the water storage tank 15 is introduced into the steam boiler 1 through the water pump 16, so that the working efficiency of the steam boiler 1 is greatly improved, the heat of high-temperature flue gas is fully utilized, the waste of heat is avoided, the first heat-insulating layer 18 and the second heat-insulating layer 19 are used for insulating the steam boiler 1 and the water storage tank 15, the loss of heat is reduced, and the utilization rate of heat is further improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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 steam boiler waste heat recovery device, includes steam boiler (1), its characterized in that: the boiler is characterized in that a combustion chamber (2) is arranged in the steam boiler (1), a burner (3) is installed on the outer side of the steam boiler (1), a drain outlet (4) is arranged at the lower end of the steam boiler (1), a first exhaust port (5) is arranged on one side of the upper end of the steam boiler (1), a main steam outlet (6) is arranged on one side of the first exhaust port (5), a heat exchanger (7) is installed above the steam boiler (1), a flue gas inlet (8) is arranged on one side of the lower end of the heat exchanger (7), a second exhaust port (12) is arranged on the other side of the upper end of the heat exchanger (7), a liquid inlet (13) is arranged on one side of the second exhaust port (12), a liquid outlet (14) is arranged on the other side of the lower end of the heat exchanger (7, the front end of the water storage tank (15) is provided with a water pump (16).

2. A steam boiler waste heat recovery device according to claim 1, characterized in that: a smoke inlet pipeline (9) is installed between the first smoke outlet (5) and the smoke inlet (8), and the smoke inlet pipeline (9) is connected with the first smoke outlet (5) and the smoke inlet (8) through flanges.

3. A steam boiler waste heat recovery device according to claim 1, characterized in that: a plurality of baffle plates (10) are arranged inside the heat exchanger (7), and a heat exchange tube (11) is arranged inside the heat exchanger (7).

4. A steam boiler waste heat recovery device according to claim 1, characterized in that: and a water level sensor (17) is arranged in the water storage tank (15).

5. A steam boiler waste heat recovery device according to claim 1, characterized in that: the outside of water storage box (15) is provided with second heat preservation (19), and second heat preservation (19) and water storage box (15) are glued to be connected, the outside of steam boiler (1) is provided with first heat preservation (18), and steam boiler (1) and first heat preservation (18) are glued to be connected.

6. A steam boiler waste heat recovery device according to claim 4, characterized in that: the model of the water level sensor (17) is set to be LV 30D.