CN216557099U - Steam boiler steam waste heat recycling system - Google Patents
Steam boiler steam waste heat recycling system Download PDFInfo
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- CN216557099U CN216557099U CN202123251868.3U CN202123251868U CN216557099U CN 216557099 U CN216557099 U CN 216557099U CN 202123251868 U CN202123251868 U CN 202123251868U CN 216557099 U CN216557099 U CN 216557099U
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Abstract
The utility model discloses a steam boiler steam waste heat recycling system, which comprises a steam boiler body, an air extractor, a heat preservation water storage tank, a steam turbine, a first water pump and a second water pump, wherein an air extraction opening is formed in the top of the steam boiler body, the air extraction end of the air extractor is connected with the air extraction opening through an air extraction pipe, the air extraction end of the air extractor is also communicated with the heat preservation water storage tank through a condensation pipe, a first valve is arranged on the condensation pipe, the air exhaust end of the air extractor is communicated with a steam inlet of the steam turbine through an exhaust pipe, the water extraction end of the first water pump is connected with drain water of a steam turbine condenser, and the water exhaust end of the first water pump is communicated with a water supply pipe of the steam boiler body through a first water drain pipe; the water pumping end of the second water pump is communicated with the heat preservation water storage tank through a second water pumping pipe, and the water discharging end of the second water pump is communicated with the water feeding pipe on the back face of the steam boiler body through a second water discharging pipe. The utility model can utilize the heat of the residual steam in the boiler and has the characteristic of recycling.
Description
Technical Field
The utility model belongs to the technical field of waste heat recovery, and particularly relates to a steam waste heat recovery and utilization system of a steam boiler.
Background
Steam boilers can be divided into electric steam boilers, oil steam boilers, gas steam boilers and the like according to fuels; the steam boiler can be divided into a manual combustion steam boiler and a full-automatic chain combustion steam boiler according to the fuel supply mode; the steam boiler can be divided into a vertical steam boiler and a horizontal steam boiler according to the structure, wherein the small steam boiler is mainly of a single-return-stroke and double-return-stroke vertical structure, and the large steam boiler is mainly of a three-return-stroke horizontal structure.
After the steam boiler is used, the steam remained in the boiler is usually directly discharged out of the boiler, which is too wasteful and causes certain pollution to the surrounding environment.
SUMMERY OF THE UTILITY MODEL
To solve the problems raised in the background art described above. The utility model provides a steam boiler steam waste heat recycling system, which can utilize the heat of residual steam in a boiler and has the characteristic of recycling.
In order to achieve the purpose, the utility model provides the following technical scheme:
a steam boiler steam waste heat recycling system comprises a steam boiler body, an air extractor, a heat preservation water storage tank, a steam turbine, a first water pump and a second water pump, wherein an air extracting opening is formed in the top of the steam boiler body, the air extracting end of the air extractor is connected with the air extracting opening through an air extracting pipe, the air extracting end of the air extractor is also communicated with the heat preservation water storage tank through a condensing pipe, a first valve is arranged on the condensing pipe, the air exhaust end of the air extractor is communicated with a steam inlet of the steam turbine through an exhaust pipe, the water pumping end of the first water pump is connected with a drain of the steam turbine condenser, and the water discharging end of the first water pump is communicated with a water feeding pipe of the steam boiler body through a first water discharging pipe; the water pumping end of the second water pump is communicated with the heat preservation water storage tank through a second water pumping pipe, and the water discharging end of the second water pump is communicated with the water feeding pipe on the back of the steam boiler body through a second water discharging pipe.
Preferably, the air exhaust end of the air exhauster, the air exhaust pipe and the condensation pipe are connected through a tee joint.
Preferably, the first drain pipe is provided with a first check valve.
Preferably, a second check valve is disposed on a rear surface of the second drain pipe.
Preferably, the water pumping end of the first water pump is connected with the drain of the steam turbine condenser through a first water pumping pipe, and a filter pipe is arranged on the first water pumping pipe.
Preferably, the water pumping end of the second water pump is communicated with the bottom of the heat preservation water storage tank through a second water pumping pipe.
Preferably, the air exhaust end of the air exhauster is communicated with the upper end of the heat preservation water storage tank through a condensation pipe.
Preferably, the top of the heat preservation water storage tank is provided with a pressure gauge for detecting the pressure in the heat preservation water storage tank.
The utility model has the following beneficial effects:
the utility model can recycle the steam waste heat of the steam boiler by arranging the air exhaust port at the top of the steam boiler body, arranging the air extractor, the exhaust pipe, the air exhaust pipe and the water tank and utilizing the existing steam turbine. Specifically, the air extractor extracts residual hot steam in the steam boiler body through the air extraction pipe, the extracted hot steam is discharged into the steam turbine through the exhaust pipe, the steam turbine pushes the rotor to rotate through high-pressure steam of the steam turbine to generate power, and the utilization of steam waste heat of the steam boiler is achieved. By arranging the first water pump, the second water pump, the heat preservation water storage tank, the first water exhaust pipe, the first water pumping pipe, the second water pumping pipe and the second water exhaust pipe, steam in the steam turbine is converted into electric energy and then condensed into water, the first water pump can extract condensed water in the steam turbine and discharge the condensed water into the steam boiler body, when preparation is needed for next evaporation of hot gas of the steam boiler body, a first valve on the condensing pipe is opened, hot steam extracted by the air extractor enters the heat preservation water storage tank through the condensing pipe, and the extracted hot steam is condensed when meeting the water in the heat preservation water storage tank, so that the temperature of the water in the heat preservation water storage tank is increased; when the steam boiler body needs to evaporate hot gas again, the second water pump extracts high-temperature water in the heat-preservation water storage tank and discharges the high-temperature water into the steam boiler body, so that the time for heating the water by the steam boiler body is shortened, and meanwhile, the waste of energy is reduced. In conclusion, the utility model can utilize the heat of the residual steam in the boiler and has the characteristic of recycling.
Further, set up the filter tube on the first drinking-water pipe, utilize the filter tube can filter the condensate water of extraction, prevent that dregs in the condensate water from getting into steam boiler body inside.
Furthermore, the top of the heat preservation water storage tank is provided with a pressure gauge for detecting the pressure in the heat preservation water storage tank, and the pressure in the heat preservation water storage tank can be prevented from being too high through the pressure gauge.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural diagram of a steam waste heat recovery system of a steam boiler according to the present invention;
fig. 2 is a rear view of fig. 1 in accordance with the present invention.
In the figure: 1. a steam boiler body; 2. an air exhaust pipe; 3. a tee joint; 4. a condenser tube; 5. a heat preservation water storage tank; 6. a pressure gauge; 7. an air extractor; 8. an exhaust pipe; 9. a steam turbine; 13. a first water pump; 14. a filter tube; 15. a first pumping pipe; 16. a first drain pipe; 17. a second drain pipe; 18. a second water pump; 19. a second pumping pipe.
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.
Referring to fig. 1-2, the present invention provides the following technical solutions: the steam boiler steam waste heat recycling system comprises a steam boiler body 1, a tee joint 3, an air extractor 7, a heat-preservation water storage tank 5, a steam turbine 9, a first water pump 13 and a second water pump 18, wherein an air extraction opening is formed in the top of the steam boiler body 1, the air extraction end of the air extractor 7 (the model is VRD) is connected with one interface of the tee joint 3, one end of an air extraction pipe 2 is connected with the air extraction opening, the other end of the air extraction pipe 2 is connected with one interface of the tee joint 3, one end of a condensation pipe 4 is communicated with the upper end of the heat-preservation water storage tank 5, the other end of the condensation pipe 4 is connected with one interface of the tee joint 3, a first valve is arranged on the condensation pipe 4, the air exhaust end of the air extractor 7 is communicated with a steam inlet of the steam turbine 9 through an air exhaust pipe 8, the water extraction end of the first water pump 13 (the model is MDW-15) is connected with the drain of a steam condenser of the steam turbine 9 through a first water extraction pipe 15, a filter pipe 14 is arranged on the first water pumping pipe 15, the water discharging end of the first water pump 13 is communicated with a water feeding pipe of the steam boiler body 1 through a first water discharging pipe 16, a first check valve is arranged on the first water discharging pipe 16, the first check valve can prevent water in the steam boiler body 1 from flowing back to the inside of the steam turbine 9 through the first water discharging pipe 16, and meanwhile, the first check valve can control the opening and closing of the first water discharging pipe 16; the water pumping end of a second water pump 18 (model is MDW-15) is communicated with the bottom of the heat preservation water storage tank 5 through a second water pumping pipe 19, the water discharging end of the second water pump 18 is communicated with the upper water pipe on the back of the steam boiler body 1 through a second water discharging pipe 17, a second check valve is arranged on the back of the second water discharging pipe 17, the second check valve can prevent water in the steam boiler body 1 from flowing back to the inside of the steam turbine 9 through the second water discharging pipe 17, and meanwhile, the second check valve can control the opening and closing of the second water discharging pipe 17; the top of heat preservation storage water tank 5 is equipped with the manometer 6 that is used for carrying out the pressure that detects in the heat preservation storage water tank 5, and manometer 6 detects the pressure in the heat preservation storage water tank 5, and people can observe the internal pressure of heat preservation storage water tank 5 through manometer 6, prevents that 5 internal pressure of heat preservation storage water tank are too high.
The process of utilizing the steam boiler steam waste heat recycling system to recycle the steam waste heat of the steam boiler comprises the following steps:
the air extractor 7 extracts the residual hot steam in the steam boiler body 1 through the air extraction pipe 2 and discharges the hot steam into the steam turbine 9 through the exhaust pipe 8 to do work;
steam in the steam turbine 9 is condensed into water after acting, the first water pump 13 pumps drain water of a condenser of the steam turbine 9 and then sends the drain water into a water supply pipe of the steam boiler body 1, the condensed water is discharged into the steam boiler body 1, and the filter pipe 14 filters the pumped condensed water to prevent dregs in the condensed water from entering the interior of the steam boiler body 1;
when preparation is needed for next time of evaporating hot gas of the steam boiler body 1, a first valve on a condensing pipe 4 is opened, hot steam extracted by an air extractor 7 enters a heat-preservation water storage tank 5 through the condensing pipe 4 and enables the temperature of water in the heat-preservation water storage tank 5 to rise, in the process, a pressure gauge 6 detects the pressure in the heat-preservation water storage tank 5, and if the detected pressure reaches a preset value, the first valve on the condensing pipe 4 is closed;
when the steam boiler body 1 needs to evaporate hot gas, the second water pump 18 pumps high-temperature water in the heat-preservation water storage tank 5 and conveys the high-temperature water to the water feeding pipe on the back of the steam boiler body 1 and enters the steam boiler body 1, so that the time for heating water by the steam boiler body 1 is reduced, and the waste of energy is reduced.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A steam boiler steam waste heat recycling system is characterized by comprising a steam boiler body (1), an air extractor (7) and a heat-preservation water storage tank (5), the steam boiler comprises a steam turbine (9), a first water pump (13) and a second water pump (18), wherein an air extraction opening is formed in the top of a steam boiler body (1), the air extraction end of an air extractor (7) is connected with the air extraction opening through an air extraction pipe (2), the air extraction end of the air extractor (7) is also communicated with a heat-preservation water storage tank (5) through a condensation pipe (4), a first valve is arranged on the condensation pipe (4), the exhaust end of the air extractor (7) is communicated with a steam inlet of the steam turbine (9) through an exhaust pipe (8), the water extraction end of the first water pump (13) is connected with drain water of a condenser of the steam turbine (9), and the drain water end of the first water pump (13) is communicated with a water supply pipe of the steam boiler body (1) through a first drain pipe (16); the water pumping end of the second water pump (18) is communicated with the heat preservation water storage tank (5) through a second water pumping pipe (19), and the water discharging end of the second water pump (18) is communicated with the upper water pipe on the back of the steam boiler body (1) through a second water discharging pipe (17).
2. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the extraction end of the air extractor (7), the extraction pipe (2) and the condensation pipe (4) are connected through a tee (3).
3. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the first drain pipe (16) is provided with a first check valve.
4. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the back of the second drain pipe (17) is provided with a second check valve.
5. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the pumping end of the first water pump (13) is connected with the drain of the steam condenser of the steam turbine (9) through a first pumping pipe (15), and the first pumping pipe (15) is provided with a filtering pipe (14).
6. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the pumping end of the second water pump (18) is communicated with the bottom of the thermal insulation water storage tank (5) through a second pumping pipe (19).
7. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the air extraction end of the air extractor (7) is communicated with the upper end of the heat preservation water storage tank (5) through the condensation pipe (4).
8. A steam boiler steam waste heat recovery system according to claim 1, characterized in that the top of the thermal insulation water storage tank (5) is provided with a pressure gauge (6) for detecting the pressure in the thermal insulation water storage tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123251868.3U CN216557099U (en) | 2021-12-22 | 2021-12-22 | Steam boiler steam waste heat recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123251868.3U CN216557099U (en) | 2021-12-22 | 2021-12-22 | Steam boiler steam waste heat recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216557099U true CN216557099U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123251868.3U Active CN216557099U (en) | 2021-12-22 | 2021-12-22 | Steam boiler steam waste heat recycling system |
Country Status (1)
| Country | Link |
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| CN (1) | CN216557099U (en) |
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2021
- 2021-12-22 CN CN202123251868.3U patent/CN216557099U/en active Active
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