Improved steam engine room auxiliary machine circulating water device
By introducing a plate-type steam-water heat exchanger and insulation structure into the auxiliary circulating water system of the turbine hall, the problem of pipe freezing and cracking in winter is solved by using high-temperature steam to heat the circulating water, achieving automatic heating and water-saving effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI XIYANG HUAXIN THERMAL POWER CO LTD
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-08
AI Technical Summary
In winter, the circulating water pipes of the auxiliary equipment in the turbine room are prone to freezing and cracking. Current technology requires manual water drainage to prevent freezing, which increases the difficulty of operation and wastes water resources.
It adopts a plate-type steam-water heat exchanger, steam inlet pipe, condensate return pipe, cold water inlet pipe and hot water outlet pipe, and uses high-temperature steam to heat the circulating water. Combined with inner and outer aluminum foil layers, air cavity and electric heating tape, the heat preservation effect is improved, and manual water draining is avoided.
It enables automatic heating of the circulating water system, preventing freezing and cracking, reducing operational difficulty, and minimizing water waste.
Smart Images
Figure CN224215313U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of turbine hall auxiliary equipment circulating water technology, specifically an improved turbine hall auxiliary equipment circulating water device. Background Technology
[0002] During the peak shaving period of the turbine room in winter, when the unit is shut down, the auxiliary machine circulating water pipeline is not heated by a heat source due to the low ambient temperature. The evaporative cooling tower and pipeline belong to the auxiliary machine circulating water system and are installed outdoors, making them extremely susceptible to freezing.
[0003] To prevent pipes from freezing and cracking in winter, existing circulating water systems require operators to drain the auxiliary circulating water system after each shutdown, which not only increases operational workload but also causes serious waste of water resources. Utility Model Content
[0004] The technical problem this utility model aims to solve is to overcome existing defects and provide an improved turbine hall auxiliary equipment circulating water device. Through the installation of a plate-type steam-water heat exchanger, steam inlet pipe, condensate return pipe, cold water inlet pipe, and hot water outlet pipe, the auxiliary equipment circulating water in the turbine hall flows into the plate-type steam-water heat exchanger when the unit is shut down. High-temperature steam from the boiler enters the plate-type steam-water heat exchanger, allowing the circulating water to exchange heat with the high-temperature steam, thus heating the water in the auxiliary equipment circulating water system to approximately 15 degrees Celsius. This eliminates the need for manual water draining, reduces operational difficulty, and minimizes water waste, effectively solving the problems in the background technology.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved circulating water device for auxiliary equipment in a steam turbine hall, comprising a plate steam-water heat exchanger, wherein a cold water inlet pipe is connected to one side of the plate steam-water heat exchanger, a hot water outlet pipe is provided on one side of the cold water inlet pipe, a steam inlet pipe is provided below the cold water inlet pipe, a support rib is provided on the outer ring side of the hot water outlet pipe, a support ring is provided at the end of the support rib away from the hot water outlet pipe, an inner aluminum foil layer is provided on the outer side of the support ring, an air-filled sponge layer is provided on the outer side of the inner aluminum foil layer, an outer aluminum foil layer is provided on the outer side of the air-filled sponge layer, and an air cavity is formed between the support ribs.
[0006] Furthermore, an adhesive layer is provided on the outside of the steam inlet pipe, an insulation layer is provided on the outside of the adhesive layer, and a protective aluminum foil layer is provided on the outer side of the insulation layer.
[0007] Furthermore, an electric heating tape is wrapped around the outer side of the cold water inlet pipe, a condensate return pipe is provided on one side of the steam inlet pipe, and valves are provided on the steam inlet pipe, the condensate return pipe, the cold water inlet pipe, and the hot water outlet pipe.
[0008] Furthermore, both the cold water inlet pipe and the hot water outlet pipe are connected to an evaporative cooling tower, and the steam inlet pipe is connected to the plate steam-water heat exchanger via a flange.
[0009] Furthermore, the steam inlet pipe is connected to the plate steam-water heat exchanger via a flange, and the cold water inlet pipe is also connected to the plate steam-water heat exchanger via a flange.
[0010] Furthermore, both the cold water inlet pipe and the hot water outlet pipe are connected to the evaporative cooling tower via flanges.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This utility model, through the setting of a plate-type steam-water heat exchanger, steam inlet pipe, condensate return pipe, cold water inlet pipe, and hot water outlet pipe, allows the auxiliary circulating water in the turbine room to flow into the plate-type steam-water heat exchanger when the unit is shut down. The high-temperature steam from the boiler during operation enters the plate-type steam-water heat exchanger, allowing the circulating water to exchange heat with the high-temperature steam, thus heating the water in the auxiliary circulating water system to a temperature of about 15 degrees Celsius. This eliminates the need for manual water draining, reduces operational difficulty, and minimizes water waste. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0014] Figure 2 This is a schematic cross-sectional view of the hot water outlet pipe in this utility model;
[0015] Figure 3 This is a schematic diagram of the main cross-sectional structure of the cooling water inlet pipe in this utility model;
[0016] Figure 4 This is a schematic diagram of the main cross-sectional structure of the steam inlet pipe in this utility model;
[0017] Figure 5 This utility model Figure 2 and Figure 3 A schematic diagram of the structure of the central support ring and support rib.
[0018] In the diagram: 1. Plate steam-water heat exchanger; 2. Steam inlet pipe; 3. Condensate return pipe; 4. Cold water inlet pipe; 5. Hot water outlet pipe; 6. Valve; 7. Evaporative cooling tower; 8. Outer aluminum foil layer; 9. Air-filled sponge layer; 10. Inner aluminum foil layer; 11. Support ring; 12. Support rib; 13. Air cavity; 14. Electric heating tape; 15. Adhesive layer; 16. Insulation layer; 17. Protective aluminum foil layer. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-5 This embodiment provides a technical solution: an improved turbine hall auxiliary circulating water device, including a plate steam-water heat exchanger 1. A cold water inlet pipe 4 is connected to one side of the plate steam-water heat exchanger 1. A hot water outlet pipe 5 is provided on one side of the cold water inlet pipe 4. A steam inlet pipe 2 is provided below the cold water inlet pipe 4. A support rib 12 is provided on the outer ring side of the hot water outlet pipe 5. A support ring 11 is provided at the end of the support rib 12 away from the hot water outlet pipe 5. An inner aluminum foil layer 10 is provided on the outside of the support ring 11. An air-filled sponge layer 9 is provided on the outside of the inner aluminum foil layer 10. An outer aluminum foil layer 8 is provided on the outside of the air-filled sponge layer 9. An air cavity 13 is formed between the support ribs 12.
[0021] like Figure 1-5 As shown, when the unit is shut down in winter, the water in the auxiliary circulating water circuit of the turbine hall enters the plate steam-water heat exchanger 1 through the cold water inlet pipe 4. The hot steam from the boiler enters the plate steam-water heat exchanger 1 through the steam inlet pipe 2. The hot steam then exchanges water and heat with the cold water in the auxiliary equipment. After being heated, the cold water is output through the hot water outlet pipe 5, thus preventing the pipes from freezing and cracking. There is no need for manual draining, reducing water waste. The inner aluminum foil layer 10, outer aluminum foil layer 8, air cavity 13, and air-filled sponge layer 9 on the outside of the cold water inlet pipe 4 and the hot water outlet pipe 5 can improve the heat insulation effect of the cold water inlet pipe 4 and the hot water outlet pipe 5, thereby keeping the water in the pipes warm. The electric heating tape 14 can heat the water in the cold water inlet pipe 4 to prevent the water temperature in the cold water inlet pipe 4 from freezing due to excessively low temperature.
[0022] An adhesive layer 15 is provided on the outside of the steam inlet pipe 2, an insulation layer 16 is provided on the outside of the adhesive layer 15, and a protective aluminum foil layer 17 is provided on the outer side of the insulation layer 16.
[0023] The outer side of the cold water inlet pipe 4 is wrapped with an electric heating tape 14. A condensate return pipe 3 is installed on one side of the steam inlet pipe 2. Valves 6 are installed on the steam inlet pipe 2, the condensate return pipe 3, the cold water inlet pipe 4, and the hot water outlet pipe 5.
[0024] Both the cold water inlet pipe 4 and the hot water outlet pipe 5 are connected to the evaporative cooling tower 7, and the steam inlet pipe 2 is connected to the plate steam-water heat exchanger 1 via a flange.
[0025] Steam inlet pipe 2 is connected to plate steam-water heat exchanger 1 via a flange, and cold water inlet pipe 4 is connected to plate steam-water heat exchanger 1 via a flange.
[0026] The cold water inlet pipe 4 and the hot water outlet pipe 5 are both connected to the evaporative cooling tower 7 via flanges.
[0027] The working principle of the improved turbine hall auxiliary circulating water device provided by this utility model is as follows: Figures 1-5 As shown, when the unit is shut down in winter, the water in the auxiliary circulating water circuit of the turbine hall enters the plate steam-water heat exchanger 1 through the cold water inlet pipe 4. The hot steam from the boiler enters the plate steam-water heat exchanger 1 through the steam inlet pipe 2. The hot steam then exchanges water and heat with the cold water in the auxiliary equipment. After being heated, the cold water is output through the hot water outlet pipe 5, thus preventing the pipes from freezing and cracking. There is no need for manual draining, reducing water waste. The inner aluminum foil layer 10, outer aluminum foil layer 8, air cavity 13, and air-filled sponge layer 9 on the outside of the cold water inlet pipe 4 and the hot water outlet pipe 5 can improve the heat insulation effect of the cold water inlet pipe 4 and the hot water outlet pipe 5, thereby keeping the water in the pipes warm. The electric heating tape 14 can heat the water in the cold water inlet pipe 4 to prevent the water temperature in the cold water inlet pipe 4 from freezing due to excessively low temperature.
[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. An improved turbine hall auxiliary circulating water device, comprising a plate steam-water heat exchanger (1), characterized in that: The plate steam-water heat exchanger (1) is connected to a cold water inlet pipe (4) on one side. A hot water outlet pipe (5) is provided on one side of the cold water inlet pipe (4). A steam inlet pipe (2) is provided on the lower side of the cold water inlet pipe (4). A support rib (12) is provided on the outer ring side of the hot water outlet pipe (5). A support ring (11) is provided at the end of the support rib (12) away from the hot water outlet pipe (5). An inner aluminum foil layer (10) is provided on the outside of the support ring (11). An air-filled sponge layer (9) is provided on the outside of the inner aluminum foil layer (10). An outer aluminum foil layer (8) is provided on the outside of the air-filled sponge layer (9). An air cavity (13) is formed between the support ribs (12).
2. The improved turbine hall auxiliary circulating water device according to claim 1, characterized in that: An adhesive layer (15) is provided on the outside of the steam inlet pipe (2), an insulation layer (16) is provided on the outside of the adhesive layer (15), and a protective aluminum foil layer (17) is provided on the outer side of the insulation layer (16).
3. The improved turbine hall auxiliary circulating water device according to claim 2, characterized in that: The outer side of the cold water inlet pipe (4) is wrapped with an electric heating tape (14), and a condensate return pipe (3) is provided on one side of the steam inlet pipe (2). Valves (6) are provided on the steam inlet pipe (2), the condensate return pipe (3), the cold water inlet pipe (4) and the hot water outlet pipe (5).
4. The improved turbine hall auxiliary circulating water device according to claim 3, characterized in that: The cold water inlet pipe (4) and the hot water outlet pipe (5) are both connected to an evaporative cooling tower (7), and the steam inlet pipe (2) is connected to the plate steam-water heat exchanger (1) via a flange.
5. The improved turbine hall auxiliary circulating water device according to claim 1, characterized in that: The steam inlet pipe (2) is connected to the plate steam-water heat exchanger (1) via a flange, and the cold water inlet pipe (4) is connected to the plate steam-water heat exchanger (1) via a flange.
6. The improved turbine hall auxiliary circulating water device according to claim 4, characterized in that: The cold water inlet pipe (4) and the hot water outlet pipe (5) are both connected to the evaporative cooling tower (7) via flanges.