CN221592865U - Raw water heating system of thermal power generating unit and waste heat recycling system of thermal power generating unit - Google Patents
Raw water heating system of thermal power generating unit and waste heat recycling system of thermal power generating unit Download PDFInfo
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- CN221592865U CN221592865U CN202322821507.0U CN202322821507U CN221592865U CN 221592865 U CN221592865 U CN 221592865U CN 202322821507 U CN202322821507 U CN 202322821507U CN 221592865 U CN221592865 U CN 221592865U
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- raw water
- temperature steam
- heating system
- water heating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 238000004064 recycling Methods 0.000 title claims abstract description 8
- 239000002918 waste heat Substances 0.000 title abstract description 7
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 18
- 239000007921 spray Substances 0.000 claims description 8
- 239000010908 plant waste Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model provides a raw water heating system of a thermal power unit and a waste heat recycling system of the thermal power unit, wherein the raw water heating system of the thermal power unit comprises a steam-water system, a raw water reservoir and a drain tank of a thermal power plant; the steam-water system of the thermal power plant is connected with the input end of the high-temperature steam pipeline; the raw water reservoir is connected with the output end of the high-temperature steam pipeline; the hydrophobic tank is communicated with the high-temperature steam pipeline through a hydrophobic pipeline. The high-temperature steam generated by the steam-water system of the thermal power plant heats cold water in the raw water reservoir through the high-temperature steam pipeline, so that the secondary utilization of energy is realized, and the utilization rate is improved.
Description
Technical Field
The utility model relates to the technical field of recycling of circulating water of thermal power plants, in particular to a raw water heating system of a thermal power unit and a waste heat recycling system of the thermal power unit.
Background
The environmental temperature in the plateau area is low, the water temperature is only 3 ℃ when the water temperature is the lowest, and for ultrafiltration and reverse osmosis equipment in water production, the water temperature of the inlet water seriously influences the output of the equipment. In order to improve the water inlet temperature, the thermal power plant is provided with a raw water heater for improving the water temperature. The common raw water heater is used for improving the water temperature to 30 ℃ by heat exchange or mixed heating, so as to ensure the ultrafiltration and reverse osmosis water inlet temperature, thereby achieving the design output. The heat exchange efficiency of the heat exchange heating mode is low, the pressure of the mixed heating mode is high, and potential safety hazards exist.
Disclosure of utility model
Aiming at the problems, the utility model provides the raw water heating system of the thermal power generating unit, which has high heat exchange efficiency and high safety.
In a first aspect, there is provided a raw water heating system of a thermal power generating unit, comprising:
the steam-water system of the thermal power plant is connected with the input end of the high-temperature steam pipeline;
the raw water reservoir is connected with the output end of the high-temperature steam pipeline;
and the hydrophobic tank is communicated with the high-temperature steam pipeline through a hydrophobic pipeline.
Further, the number of the drainage pipelines is multiple, and the drainage pipelines are connected in parallel.
Further, the communication part of one of the plurality of drain pipelines and the high-temperature steam pipeline is arranged close to the drain tank.
Further, the high-temperature steam pipeline comprises an injection head, wherein the injection head is arranged at the output of the high-temperature steam pipeline, and a plurality of injection holes are formed in the injection head.
Further, the number of the ejection heads is plural, and the plural ejection heads are connected in parallel.
Further, a plurality of the spray heads are uniformly arranged in the raw water reservoir.
Further, the high-temperature steam pipeline further comprises a first stop valve, and the first stop valve is arranged at the position, close to the output end, of the high-temperature steam pipeline.
Further, the water draining device further comprises a second stop valve, and the second stop valve is arranged on the water draining pipeline.
Further, at least one of the following is arranged on the high-temperature steam pipeline: flow detection device, pressure detection device, temperature detection device.
In a second aspect, a thermal power generating unit waste heat recycling system is provided, which comprises the thermal power generating unit raw water heating system according to the technical scheme.
The one or more technical schemes provided by the application have at least the following technical effects or advantages:
The high-temperature steam generated by the steam-water system of the thermal power plant heats cold water in the raw water reservoir through the high-temperature steam pipeline, so that the secondary utilization of energy is realized, and the utilization rate is improved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a raw water heating system of a thermal power generating unit according to an embodiment of the utility model.
Wherein: 1. high-temperature steam pipeline 2, raw water reservoir, 3, hydrophobic tank, 4, hydrophobic pipeline, 5, injection head, 6, first stop valve, 7, second stop valve, 8, flow detection device, 9, pressure detection device, 10, temperature detection device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Fig. 1 is a schematic structural diagram of a raw water heating system of a thermal power generating unit according to an embodiment of the present utility model. As shown in fig. 1, a raw water heating system of a thermal power generating unit according to an embodiment of the present utility model includes: a steam-water system, a raw water reservoir 2 and a drain tank 3 of the thermal power plant; the steam-water system of the thermal power plant adopts the existing steam-water system, and the steam-water system is of the prior art, so that specific connection relations are not repeated here.
The output end of the high-temperature steam of the steam-water system of the thermal power plant is connected with the input end of the high-temperature steam pipeline 1, and the output end of the high-temperature steam pipeline 1 is connected with the raw water reservoir 2. Specifically, the output end of the high-temperature steam pipeline 1 is inserted into the raw water reservoir 2, and high-temperature steam generated by a steam-water system of a thermal power plant is conveyed into the raw water reservoir 2 through the high-temperature steam pipeline 1 to heat raw water with a lower temperature in the raw water reservoir 2.
In a preferred embodiment, the output end of the high temperature steam pipe 1 is also connected with an injection head 5, a plurality of injection holes are arranged on the injection head 5, and the delivered high temperature steam is evenly injected into the raw water reservoir 2, so that the heating efficiency and uniformity are improved. Specifically, the injection head 5 may be an injection pipe with one end closed, the diameter of the injection pipe is larger than that of the high-temperature steam pipeline 1, and the other end is connected with the output end of the high-temperature steam pipeline 1 through a reducing joint; the pipe wall of the injection pipe is provided with a plurality of injection holes, and the specific number and the aperture of the injection holes can be specifically set according to the actual conditions such as the length of the injection pipe, the pipe wall thickness, the size of the raw water reservoir 2 and the like. The structure of the spray head 5 that can be realized is merely illustrated here, and in practical applications, different types of spray heads 5 may be selected or designed according to practical situations.
To further improve the heating efficiency and uniformity, the number of the ejection heads 5 is plural, and the plurality of the ejection heads 5 are connected in parallel. Specifically, the output end of the high-temperature steam pipeline 1 is connected with a plurality of injection pipelines which are arranged in parallel. One end of each injection pipeline is connected with the high-temperature steam pipeline 1, the other end of each injection pipeline is connected with the injection head 5, and the injection heads 5 are uniformly distributed in the raw water reservoir 2.
In order to control the amount of high-temperature steam to be delivered, a first shut-off valve 6 may be provided in each injection line, and the amount of high-temperature steam to be delivered may be adjusted by adjusting the opening and closing of the first shut-off valve 6.
In a preferred embodiment, the plurality of water drain pipes 4 are connected in parallel to each other. Specifically, one end of each drain pipeline 4 is respectively communicated with the middle part of the high-temperature steam pipeline 1, and the other end is communicated with the drain tank 3. The connection parts of the plurality of drain pipelines 4 and the high-temperature steam pipeline 1 are arranged at intervals, so that liquid water condensed at any position in the high-temperature steam pipeline 1 can flow into the drain tank 3 through the drain pipelines 4 rapidly. Meanwhile, the drainage pipeline 4 and the drainage box 3 can also reduce the pressure in the high-temperature steam pipeline 1, and improve the safety of system operation.
And a second stop valve 7 is further arranged on each drain pipeline 4, and the opening and closing sizes of the second stop valves 7 are adjusted to adjust the high-temperature steam entering the water-repellent tank 3 and the liquid water condensed in the high-temperature steam pipeline 1, so that the pressure of the high-temperature steam conveyed into the raw water reservoir 2 is reduced, and the safety of the system is improved.
The high-temperature steam pipeline 1 is also provided with a detection device which is used for detecting the operation device of the high-temperature steam pipeline 1 in real time. The detection device at least comprises one of the following components: a flow rate detection device 8, a pressure detection device 9, and a temperature detection device 10. The flow detection device 8 can be a flowmeter, the pressure detection device 9 can be a pressure gauge, and the temperature detection device 10 can be a thermometer.
Before the cold water in the raw water storage tank is heated, the high-temperature steam can be used to waste heat the high-temperature steam pipeline 1 by opening the second stop valve 7 with respect to the first stop valve 6. When the temperature of the high-temperature steam pipeline 1 reaches the preset requirement, the first stop valve 6 can be opened again, and the second stop valve 7 can be reduced, so that a large amount of high-temperature steam is introduced into the raw water storage tank.
In the running process of the system, the detection device arranged on the high-temperature steam pipeline 1 detects flow, temperature and pressure information in the high-temperature steam pipeline 1 in real time. The high-temperature steam is uniformly sprayed into the raw water storage tank through the high-temperature steam pipeline 1, the spray pipe and the spray head 5, cold water in the raw water storage tank is added for treatment, and the sprayed high-temperature steam quantity is controlled through the first stop valve 6. The temperature difference between the inside and the outside of the high-temperature steam pipeline 1 is large, the steam humidity in the pipeline is high, the steam is easy to condense into liquid water in the pipeline, and when the liquid water exists, the liquid water can be discharged into the drain tank 3 through the water conveying pipeline, so that the liquid water is prevented from being reserved in the pipeline; meanwhile, the high-temperature steam flowing to the hydrophobic tank 3 can be controlled by adjusting the second stop valve 7, so that the high-temperature steam flowing to the raw water reservoir 2 is controlled, and the pressure in the high-temperature steam pipeline 1 can be kept within a safe range by controlling the first stop valve 6 and the second stop valve 7, so that the safety of the system is improved.
The embodiment of the utility model also provides a thermal power unit waste heat recycling system, which comprises the thermal power unit raw water heating system.
Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A raw water heating system of a thermal power generating unit, comprising:
the steam-water system of the thermal power plant is connected with the input end of the high-temperature steam pipeline (1);
a raw water reservoir (2) connected with the output end of the high-temperature steam pipeline (1);
the hydrophobic tank (3) is communicated with the high-temperature steam pipeline (1) through a hydrophobic pipeline (4).
2. Thermal power plant raw water heating system according to claim 1, characterized in that the number of the water drain pipelines (4) is multiple, and the water drain pipelines (4) are connected in parallel.
3. Thermal power unit raw water heating system according to claim 2, characterized in that the connection of one of the hydrophobic pipes (4) with the high temperature steam pipe (1) is arranged close to the hydrophobic tank (3).
4. A raw water heating system of a thermal power generating unit according to claim 1, further comprising an injection head (5), wherein the injection head (5) is arranged at the output of the high temperature steam pipeline (1), and a plurality of injection holes are arranged on the injection head (5).
5. A raw water heating system of a thermal power generating unit according to claim 4, wherein,
The number of the spray heads (5) is plural, and the spray heads (5) are connected in parallel.
6. Thermal power plant raw water heating system according to claim 5, characterized in that a plurality of the spray heads (5) are uniformly arranged in the raw water reservoir (2).
7. Thermal power unit raw water heating system according to claim 1, further comprising a first shut-off valve (6), said first shut-off valve (6) being arranged at the high temperature steam line (1) near its output.
8. Thermal power plant raw water heating system according to claim 1, further comprising a second shut-off valve (7), the second shut-off valve (7) being arranged on the hydrophobic line (4).
9. Thermal power plant raw water heating system according to claim 1, characterized in that at least one of the following is also provided on the high temperature steam line (1): a flow detection device (8), a pressure detection device (9) and a temperature detection device (10).
10. A thermal power plant waste heat recycling system, comprising a thermal power plant raw water heating system according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322821507.0U CN221592865U (en) | 2023-10-20 | 2023-10-20 | Raw water heating system of thermal power generating unit and waste heat recycling system of thermal power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322821507.0U CN221592865U (en) | 2023-10-20 | 2023-10-20 | Raw water heating system of thermal power generating unit and waste heat recycling system of thermal power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221592865U true CN221592865U (en) | 2024-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322821507.0U Active CN221592865U (en) | 2023-10-20 | 2023-10-20 | Raw water heating system of thermal power generating unit and waste heat recycling system of thermal power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221592865U (en) |
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2023
- 2023-10-20 CN CN202322821507.0U patent/CN221592865U/en active Active
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