CN215893391U - Power plant waste heat utilization device - Google Patents
Power plant waste heat utilization device Download PDFInfo
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- CN215893391U CN215893391U CN202121232886.4U CN202121232886U CN215893391U CN 215893391 U CN215893391 U CN 215893391U CN 202121232886 U CN202121232886 U CN 202121232886U CN 215893391 U CN215893391 U CN 215893391U
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Abstract
The utility model provides a waste heat utilization device for a power plant, which can prepare bathing hot water by using heat of sewage continuously discharged from a boiler to a continuous discharge expansion tank, reduce the operation cost, save energy and reduce emission. The sewage inlet pipe is connected with one inlet of the three-way regulating valve; one outlet of the three-way regulating valve is connected with a shell side inlet of the hot water heat exchanger, and the other outlet of the three-way regulating valve is connected with a shell side inlet of the desalted water heat exchanger; the shell side outlet of the hot water heat exchanger and the shell side outlet of the demineralized water heat exchanger are both connected with a sewage outlet pipe; the outlet of the hot water heat exchanger on the pipe side is connected with a hot water outlet pipe, the inlet of the pipe side is connected with the water tank through a pipeline, and a water pump is arranged on the pipeline; the demineralized water heat exchanger, the tube side outlet and the tube side outlet inlet are connected with a demineralized water tube; the hot water return pipe is connected with the water tank, and an electromagnetic regulating valve is arranged on the hot water return pipe; the water replenishing pipe is connected with the water tank, and a water replenishing switch valve is arranged on the water replenishing pipe; the overflow pipe is connected with the water tank.
Description
Technical Field
The utility model relates to a power plant waste heat utilization device.
Background
Generally, in order to enable workers to work 24 hours of hot water, most of hot water systems in dormitories of thermal power plants use electric water heaters, the electric water heaters are electrified all the year round, tens of thousands or even hundreds of thousands of electric charges are spent each year, and the running cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides the power plant waste heat utilization device with a reasonable structural design, which can prepare bathing hot water by using heat from continuous sewage discharge of a boiler to continuous discharge of a flash tank, reduces the operation cost, saves energy and reduces emission.
The technical scheme adopted by the utility model for solving the problems is as follows: the utility model provides a power plant waste heat utilization equipment which characterized in that: the system comprises a hot water heat exchanger, a demineralized water heat exchanger, a water tank, a water pump, a three-way regulating valve, an electromagnetic regulating valve, a water replenishing switch valve, a sewage inlet pipe, a sewage outlet pipe, a hot water outlet pipe, a demineralized water pipe, a hot water return pipe, a water replenishing pipe and an overflow pipe; the sewage inlet pipe is connected with one inlet of the three-way regulating valve; one outlet of the three-way regulating valve is connected with a shell side inlet of the hot water heat exchanger, and the other outlet of the three-way regulating valve is connected with a shell side inlet of the desalted water heat exchanger; the shell side outlet of the hot water heat exchanger and the shell side outlet of the demineralized water heat exchanger are both connected with a sewage outlet pipe; the outlet of the hot water heat exchanger on the pipe side is connected with a hot water outlet pipe, the inlet of the pipe side is connected with the water tank through a pipeline, and a water pump is arranged on the pipeline; the tube side outlet and the tube side inlet of the demineralized water heat exchanger are both connected with a demineralized water tube; the hot water return pipe is connected with the water tank, and an electromagnetic regulating valve is arranged on the hot water return pipe; the water replenishing pipe is connected with the water tank, and a water replenishing switch valve is arranged on the water replenishing pipe; the overflow pipe is connected with the water tank.
The utility model is provided with a water flow differential pressure switch on a pipeline connecting the inlet of the hot water heat exchanger tube side and the water tank.
The water pump is a variable frequency circulating pump.
The water replenishing switch valve is an electromagnetic valve.
Valves are arranged on a tube side outlet, a tube side inlet, a shell side outlet and a shell side inlet of the demineralized water heat exchanger.
The shell side outlet of the hot water heat exchanger is provided with a valve.
The utility model also comprises a drain pipe and a safety valve; one end of the drain pipe is connected with the shell side of the hot water heat exchanger, and the other end of the drain pipe is connected with the water tank; the safety valve is arranged on the drain pipe.
Compared with the prior art, the utility model has the following advantages and effects: the heat from the boiler to continuously discharge sewage to the continuous-discharge flash tank is used for preparing bath hot water, the use and operation cost is saved, simultaneously, full-automatic hot water supply within 24 hours is realized, great convenience is brought to the life of staff, the operation cost is reduced, energy is saved, emission is reduced, and the trend of carbon neutralization in the current society is met.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
The embodiment of the utility model comprises a hot water heat exchanger 1, a demineralized water heat exchanger 2, a water tank 3, a water pump 4, a three-way regulating valve 5, an electromagnetic regulating valve 6, a water replenishing switch valve 7, a water flow pressure difference switch 8, a sewage inlet pipe 9, a sewage outlet pipe 10, a hot water outlet pipe 11, a demineralized water pipe 12, a hot water return pipe 13, a water replenishing pipe 14, an overflow pipe 15, a drain pipe 16 and a safety valve 17.
The sewage inlet pipe 9 is used for connecting a continuous sewage discharge expansion tank 19 of a power plant, and the sewage inlet pipe 9 is connected with one inlet of the three-way regulating valve 5; one outlet of the three-way regulating valve 5 is connected with a shell side inlet of the hot water heat exchanger 1, and the other outlet is connected with a shell side inlet of the demineralized water heat exchanger 2.
The shell side outlet of the hot water heat exchanger 1 and the shell side outlet of the demineralized water heat exchanger 2 are both connected with a sewage outlet pipe 10, and the sewage outlet pipe 10 is used for being connected with a boiler fixed-discharge flash tank 20 of a power plant.
The outlet of the hot water heat exchanger 1 on the pipe side is connected with a hot water outlet pipe 11, and the hot water outlet pipe 11 is used for connecting a bath point of a bathroom. The inlet of the hot water heat exchanger 1 on the pipe side is connected with the water tank 3 through a pipeline, a water pump 4 and a water flow pressure difference switch 8 are installed on the pipeline, and the water pump 4 adopts a variable frequency circulating pump.
Both the tube side outlet and the tube side inlet of the demineralized water heat exchanger 2 are connected to a demineralized water tube 12. The demineralized water pipe 12 has an inlet for inputting demineralized water and an outlet for connection to a deaerator.
The hot water return pipe 13 is connected with the water tank 3, and the electromagnetic regulating valve 6 is installed on the hot water return pipe 13.
The water replenishing pipe 14 is connected with the water tank 3, and the water replenishing switch valve 7 is installed on the water replenishing pipe 14. The water-replenishing switch valve 7 is an electromagnetic valve,
the valve opening interlocks the liquid level of the water tank to keep the liquid level of the water tank stable.
The overflow pipe 15 is connected with the water tank 3, and the overflow pipe 15 is also used for connecting the boiler of power plant and surely arranges the flash tank.
One end of the water discharge pipe 16 is connected to the shell side of the hot water heat exchanger 1, and the other end is connected to the water tank 3. The safety valve 17 is arranged on the water discharge pipe 16, the pressure is not more than 0.5Mpa, and the water is discharged to the water tank 3 when the safety valve 17 is opened.
Valves are arranged on the outlet of the tube side, the inlet of the tube side, the outlet of the shell side and the inlet of the shell side of the demineralized water heat exchanger 2.
A valve is arranged on the shell side outlet of the hot water heat exchanger 1.
The hot water heat exchanger 1 is characterized in that the pipe side is a high-temperature side, the pipe side pressure is designed pressure of a boiler continuous row, the inlet water temperature of the pipe side is 20 ℃, and the outlet water temperature of the pipe side is 60 ℃; the shell side is the low temperature side, the shell side inlet water temperature is 159 ℃, and the shell side outlet water temperature is 80 ℃.
The tube side of the demineralized water heat exchanger 2 is a high-temperature side, and the water temperature of an inlet at the tube side is 30 ℃; the shell side is the low temperature side, the shell side inlet water temperature is 159 ℃, and the shell side outlet water temperature is 80 ℃.
The action logic of the utility model is as follows: when the user does not have a bath, the continuous drainage sewage of the continuous drainage flash tank 19 is all led to the demineralized water heat exchanger 2 to heat the demineralized water; when a bathroom valve is opened, a water flow pressure difference signal is detected by a water flow pressure difference switch 8, an interlocking water pump 4 is started, an interlocking three-way regulating valve 5 acts, continuously-discharged sewage flows to a hot water heat exchanger 1, tap water from a water tank 3 in the hot water heat exchanger 1 is heated, and the opening degree of the three-way regulating valve 5 is regulated to control the temperature of an outlet on the shell side of the hot water heat exchanger 1 to be 60 ℃; the heated tap water flows to the bathroom through the hot water outlet pipe 11.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Equivalent or simple changes in the structure, characteristics and principles of the utility model are included in the protection scope of the patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (7)
1. The utility model provides a power plant waste heat utilization equipment which characterized in that: the system comprises a hot water heat exchanger, a demineralized water heat exchanger, a water tank, a water pump, a three-way regulating valve, an electromagnetic regulating valve, a water replenishing switch valve, a sewage inlet pipe, a sewage outlet pipe, a hot water outlet pipe, a demineralized water pipe, a hot water return pipe, a water replenishing pipe and an overflow pipe; the sewage inlet pipe is connected with one inlet of the three-way regulating valve; one outlet of the three-way regulating valve is connected with a shell side inlet of the hot water heat exchanger, and the other outlet of the three-way regulating valve is connected with a shell side inlet of the desalted water heat exchanger; the shell side outlet of the hot water heat exchanger and the shell side outlet of the demineralized water heat exchanger are both connected with a sewage outlet pipe; the outlet of the hot water heat exchanger on the pipe side is connected with a hot water outlet pipe, the inlet of the pipe side is connected with the water tank through a pipeline, and a water pump is arranged on the pipeline; the tube side outlet and the tube side inlet of the demineralized water heat exchanger are both connected with a demineralized water tube; the hot water return pipe is connected with the water tank, and an electromagnetic regulating valve is arranged on the hot water return pipe; the water replenishing pipe is connected with the water tank, and a water replenishing switch valve is arranged on the water replenishing pipe; the overflow pipe is connected with the water tank.
2. The power plant waste heat utilization device of claim 1, wherein: a water flow differential pressure switch is arranged on a pipeline connecting an inlet at the tube side of the hot water heat exchanger with the water tank.
3. The power plant waste heat utilization device of claim 1, wherein: the water pump is a variable frequency circulating pump.
4. The power plant waste heat utilization device of claim 1, wherein: the water replenishing switch valve is an electromagnetic valve.
5. The power plant waste heat utilization device of claim 1, wherein: valves are arranged on the tube side outlet, the tube side inlet, the shell side outlet and the shell side inlet of the demineralized water heat exchanger.
6. The power plant waste heat utilization device of claim 1, wherein: and a valve is arranged on the shell side outlet of the hot water heat exchanger.
7. The power plant waste heat utilization device of claim 1, wherein: the device also comprises a drain pipe and a safety valve; one end of the drain pipe is connected with the shell side of the hot water heat exchanger, and the other end of the drain pipe is connected with the water tank; the safety valve is arranged on the drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121232886.4U CN215893391U (en) | 2021-06-03 | 2021-06-03 | Power plant waste heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121232886.4U CN215893391U (en) | 2021-06-03 | 2021-06-03 | Power plant waste heat utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215893391U true CN215893391U (en) | 2022-02-22 |
Family
ID=80561007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121232886.4U Active CN215893391U (en) | 2021-06-03 | 2021-06-03 | Power plant waste heat utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215893391U (en) |
-
2021
- 2021-06-03 CN CN202121232886.4U patent/CN215893391U/en active Active
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