Steam turbine condensed hot water heating device
By setting up a reverse osmosis membrane in the condensate heating device to filter the condensed water, the problem of scale generation in the copper tube is solved, and efficient heating effect and long-life use of the membrane are achieved.
Patent Information
- Application Number
- CN202422073546.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-08-26
AI Technical Summary
In the existing condensate heating device, scale is easily generated in the inner wall of the copper tube, which affects the heat exchange effect and leads to a reduction in heating efficiency.
A multi-layer reverse osmosis membrane between the upper mesh plate and the lower mesh plate is set up in the water inlet chamber. The condensed water is filtered through the reverse osmosis membrane to remove soluble impurities, and then enters the copper tube for heating. The reverse osmosis membrane can be flushed regularly to ensure service life and can be removed and replaced.
It effectively avoids the formation of scale in the copper tube, ensures the heating effect, extends the service life of the reverse osmosis membrane, and improves the heat exchange efficiency.
Smart Images
Figure CN223283241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of condensed water heating, in particular to a steam turbine condensed water heating device. Background Art
[0002] The extraction steam reheat system is a basic component of the steam turbine unit in a thermal power plant, and the low-pressure heater is one of the important auxiliary equipment in the extraction steam reheat system. The low-pressure heater uses the low-pressure extraction steam of the steam turbine to heat the low-pressure feed water delivered by the condensate pump, so that the feed water reaches the required temperature, thereby improving the flow characteristics of the steam turbine and reducing the cooling source loss of the steam, thereby improving the thermal economy of the power plant.
[0003] Condensate passing through a steam turbine contains soluble impurities. Condensate heating devices primarily heat water by passing it through thin copper tubes, exchanging heat with steam. During the heating process, soluble impurities easily transform into insoluble impurities (i.e., scale), which adsorbs on the inner surface of the copper tubes. This affects the heat exchange efficiency over long-term use, reducing the heating effect. Therefore, we propose a steam turbine condensate hot water heating device. Utility Model Content
[0004] The purpose of the utility model is to provide a steam turbine condensing hot water heating device, in which an upper screen and a lower screen are arranged in the water inlet chamber in the upper cover, and a multi-layer reverse osmosis membrane is placed between the two. After the condensed water enters, it is first filtered through the reverse osmosis membrane to remove soluble impurities, and then enters the copper tube to be heated by steam. This can avoid the formation of scale in the copper tube and affect the heat exchange efficiency, ensure the heating effect, and the reverse osmosis membrane can be flushed to ensure a long service life, thereby solving the problems raised in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam turbine condensing hot water heating device, comprising a heating tank and an upper cover, partitions are fixed horizontally above and below the interior of the heating tank, a water inlet chamber is formed between the partition and the upper cover, a water outlet chamber is formed between the partition and the bottom of the heating tank, and a plurality of copper tubes are evenly connected between the partitions of the water inlet chamber and the water outlet chamber; an upper mesh plate and a lower mesh plate are respectively provided above and below the interior of the upper cover, a reverse osmosis membrane is placed between the upper mesh plate and the lower mesh plate, and flushing pipes are connected to both sides of the upper cover between the upper mesh plate and the lower mesh plate, the flushing pipes are connected to the interior of the upper cover, and a second valve is installed on the flushing pipe; the upper side of the heating tank is connected to a steam inlet connected to the interior thereof, and the steam inlet is located below the upper partition, and the lower side of the heating tank is connected to a steam outlet connected to the interior thereof, and the steam outlet is located above the lower partition.
[0006] By adopting the above technical solution, the pressurized condensed water enters the water inlet chamber, and is first filtered through the reverse osmosis membrane before entering each copper tube. The condensed water in the copper tube can be heated by the steam entering the heating tank, and then enters the water outlet chamber and is discharged from the water outlet pipe. The reverse osmosis membrane can be regularly flushed with high-pressure water to ensure a long service life.
[0007] Optionally, the lower outer ring of the upper cover and the upper outer ring of the heating tank are both provided with flanges, and the flanges are connected and locked by locking bolts to achieve detachable installation of the upper cover.
[0008] By adopting the above technical solution, when the reverse osmosis membrane reaches the end of its service life, the upper cover can be removed and replaced.
[0009] Optionally, a ring plate is fixed to the bottom outer ring of the lower mesh plate, and the ring plate is fixed to the inner wall of the upper cover by bolts to achieve detachable installation of the lower mesh plate.
[0010] By adopting the above technical solution, after the upper cover is removed, the lower screen plate can be removed and the reverse osmosis membrane can be replaced.
[0011] Optionally, the reverse osmosis membrane is provided with multiple layers, and the pore size of the reverse osmosis membrane decreases from top to bottom, and the reverse osmosis membranes are separated by mesh partitions.
[0012] By adopting the above technical solution, multiple reverse osmosis membranes can achieve step-by-step filtration of condensed water.
[0013] Optionally, a water inlet pipe is connected to the top of the upper cover, the water inlet pipe is communicated with the water inlet chamber, and a first valve is installed on the water inlet pipe.
[0014] By adopting the above technical solution, condensed water enters the water inlet chamber from the water inlet pipe.
[0015] Optionally, a water outlet pipe is connected to the bottom of the heating tank, and the water outlet pipe is communicated with the water outlet chamber.
[0016] By adopting the above technical solution, the condensed water in the water outlet chamber is discharged from the water outlet pipe.
[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0018] 1. The technical solution of this application is to set an upper mesh plate and a lower mesh plate in the water inlet chamber inside the upper cover, and place a multi-layer reverse osmosis membrane between the two. After the condensed water enters, it is first filtered through the reverse osmosis membrane to remove soluble impurities, and then enters the copper tube to be heated by steam, which can avoid the formation of scale in the copper tube and affect the heat exchange efficiency, and ensure the heating effect.
[0019] 2. The technical solution of the present application provides a flushing pipe on the side of the upper cover, so that the reverse osmosis membrane can be flushed to ensure a longer service life, and the upper cover can be removed and the reverse osmosis membrane can be replaced when necessary. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:
[0021] Figure 1 This is a schematic diagram of the overall structure of the steam turbine condensing hot water heating device of the utility model;
[0022] Figure 2 This is a schematic diagram of the internal structure of the steam turbine condensing hot water heating device of the present invention;
[0023] Figure 3 This is a schematic diagram of the detailed internal structure of the steam turbine condensing hot water heating device of the present invention.
[0024] In the figure: 1. Heating tank; 11. Steam inlet; 12. Steam outlet; 13. Flange; 131. Locking bolt; 14. Water outlet pipe; 15. Water outlet chamber; 16. Partition; 161. Copper tube; 2. Upper cover; 21. Water inlet pipe; 211. First valve; 22. Flushing pipe; 221. Second valve; 23. Water inlet chamber; 24. Upper mesh plate; 25. Lower mesh plate; 251. Ring plate; 252. Bolt; 26. Reverse osmosis membrane. DETAILED DESCRIPTION
[0025] See also Figure 1-3 The utility model provides a technical solution: a steam turbine condensing hot water heating device, comprising a heating tank 1 and an upper cover 2, partitions 16 are horizontally fixed above and below the inside of the heating tank 1, a water inlet chamber 23 is formed between the partition 16 and the upper cover 2, a water inlet pipe 21 is connected to the top of the upper cover 2, the water inlet pipe 21 is communicated with the water inlet chamber 23, and a first valve 211 is installed on the water inlet pipe 21, the opening and closing of the water inlet pipe 21 is controlled by the first valve 211, so that the water inlet pipe 21 is connected to the outlet pipe of the condensate pump, and when the first valve 211 is opened, the pressurized condensate can be allowed to enter the water inlet chamber 23 from the water inlet pipe 21.
[0026] A water outlet chamber 15 is formed between the partition 16 and the bottom of the heating tank 1. A plurality of copper tubes 161 are evenly connected between the water inlet chamber 23 and the partition 16 of the water outlet chamber 15. The condensed water in the water inlet chamber 23 flows downward from the copper tube 161 and finally enters the water outlet chamber 15. The upper side of the heating tank 1 is connected to a steam inlet 11 connected to its interior. The steam inlet 11 is located below the upper partition 16. The lower side of the heating tank 1 is connected to a steam outlet 12 connected to its interior. The steam outlet 12 is located above the lower partition 16, so that low-pressure and high-temperature steam enters from the steam inlet 11 and is discharged from the steam outlet 12, and the water that is condensed again is also discharged from the steam outlet 12. During the steam flow process, the condensed water flowing in the copper tube 161 can be heated. The bottom of the heating tank 1 is connected to a water outlet pipe 14, which is connected to the water outlet chamber 15. Finally, the condensed water is discharged from the water outlet pipe 14.
[0027] In order to filter the soluble impurities in the condensed water, an upper mesh plate 24 and a lower mesh plate 25 are respectively provided above and below the upper cover 2, and a reverse osmosis membrane 26 is placed between the upper mesh plate 24 and the lower mesh plate 25. The reverse osmosis membrane 26 is provided with multiple layers, and the pore size of the reverse osmosis membrane 26 decreases from top to bottom. The reverse osmosis membranes 26 are separated by mesh partitions, so that the pressurized condensed water can be filtered step by step and impurities are left behind when passing through the reverse osmosis membrane 26.
[0028] In order to ensure the long service life of the reverse osmosis, flushing pipes 22 are connected on both sides of the upper cover 2 between the upper mesh plate 24 and the lower mesh plate 25. The flushing pipes 22 are connected to the interior of the upper cover 2, and a second valve 221 is installed on the flushing pipe 22. One of the flushing pipes 22 is connected to a high-pressure water source. When flushing is required, the first valve 211 is closed to stop supplying condensed water to the water inlet chamber 23, and the second valve 221 is opened to allow the high-pressure water source to flush the reverse osmosis membrane 26 and discharge it from the flushing pipe 22 on the other side.
[0029] The lower outer ring of the upper cover 2 and the upper outer ring of the heating tank 1 are both provided with flanges 13, and the flanges 13 are connected and locked by locking bolts 131 to realize the detachable installation of the upper cover 2. When the reverse osmosis membrane 26 needs to be replaced, the upper cover 2 can be removed, and the bottom outer ring of the lower mesh plate 25 is fixed with a ring plate 251, and the ring plate 251 is fixed to the inner wall of the upper cover 2 by bolts 252 to realize the detachable installation of the lower mesh plate 25. After removing the upper cover 2 and then the lower mesh plate 25, the reverse osmosis membrane 26 can be taken out and replaced.
[0030] When in use, the condensate pipe is connected to the water inlet pipe 21, the water outlet pipe 14 is connected to the deaerator and the high-pressure heater, and finally introduced into the boiler. The flushing pipes 22 on both sides are connected to the high-pressure water source and the drain pipe respectively, and the steam inlet 11 is connected to the low-pressure steam supply pipe, and the steam outlet 12 is connected to the discharge pipe. When working, the first valve 211 is opened, and the condensate heated by the condensate pump enters the water inlet chamber 23 from the water inlet pipe 21. The water pressure is used to enable it to gradually pass through multiple reverse osmosis membranes 26 to be filtered out of soluble impurities, and then enter each copper tube 161 and flow downward. In this process, high-temperature steam enters the heating tank 1 from the steam inlet 11 and flows downward, so that the condensate in the copper tube 161 can absorb the heat of the steam and be heated, and finally enters the water outlet chamber 15. It is discharged from the water outlet pipe 14, and the steam and the re-condensed water are discharged from the steam outlet 12. During use, the first valve 211 can be closed regularly, and the second valve 221 on the two flushing pipes 22 can be opened. High-pressure water enters from the flushing pipe 22 on one side, which can flush the reverse osmosis membrane 26 and flush out the adsorbed impurities from the flushing pipe 22 on the other side. After that, the second valve 221 is closed and the first valve 211 can be opened again to perform heating. After the service life of the reverse osmosis membrane 26 is reached, the supply of steam and condensed water can be stopped, the locking bolt 131 can be unscrewed and the upper cover 2 can be removed, and then the bolt 252 can be unscrewed to remove the lower mesh plate 25 of the lower layer. The reverse osmosis membrane 26 can be replaced. After the replacement is completed, the lower mesh plate 25 is locked again and the upper cover 2 is installed, and it can continue to be used.
Claims
1. A steam turbine condensing hot water heating device, comprising a heating tank (1) and an upper cover (2), characterized in that: A partition (16) is transversely fixed above and below the interior of the heating tank (1); a water inlet chamber (23) is formed between the partition (16) and the upper cover (2); a water outlet chamber (15) is formed between the partition (16) and the bottom of the heating tank (1); and a plurality of copper tubes (161) are evenly connected between the partitions (16) of the water inlet chamber (23) and the water outlet chamber (15); An upper screen plate (24) and a lower screen plate (25) are respectively provided above and below the interior of the upper cover (2), a reverse osmosis membrane (26) is provided between the upper screen plate (24) and the lower screen plate (25), and flushing pipes (22) are connected to both sides of the upper cover (2) between the upper screen plate (24) and the lower screen plate (25), the flushing pipes (22) are communicated with the interior of the upper cover (2), and a second valve (221) is installed on the flushing pipes (22); The upper side of the heating tank (1) is connected to a steam inlet (11) communicating with the interior thereof, and the steam inlet (11) is located below the upper partition (16). The lower side of the heating tank (1) is connected to a steam outlet (12) communicating with the interior thereof, and the steam outlet (12) is located above the lower partition (16).
2. The turbine condensing hot water heating device according to claim 1, characterized in that: The lower outer ring of the upper cover (2) and the upper outer ring of the heating tank (1) are both provided with flanges (13), and the flanges (13) are connected and locked by locking bolts (131) to achieve detachable installation of the upper cover (2).
3. The turbine condensing hot water heating device according to claim 1, characterized in that: A ring plate (251) is fixed to the outer ring of the bottom of the lower mesh plate (25), and the ring plate (251) is fixed to the inner wall of the upper cover (2) by bolts (252), thereby realizing detachable installation of the lower mesh plate (25).
4. The turbine condensing hot water heating device according to claim 1, characterized in that: The reverse osmosis membrane (26) is provided with multiple layers, and the pore size of the reverse osmosis membrane (26) decreases from top to bottom, and the reverse osmosis membranes (26) are separated by mesh partitions.
5. The turbine condensing hot water heating device according to claim 1, characterized in that: A water inlet pipe (21) is connected above the upper cover (2), the water inlet pipe (21) is communicated with the water inlet chamber (23), and a first valve (211) is installed on the water inlet pipe (21).
6. The turbine condensing hot water heating device according to claim 1, characterized in that: The bottom of the heating tank (1) is connected to a water outlet pipe (14), and the water outlet pipe (14) is communicated with a water outlet chamber (15).