Raw water heat exchange device for thermal power plant

Abstract

The utility model belongs to the technical field of heat exchange, and particularly relates to a raw water heat exchange device of a thermal power plant, which comprises a steam condensing component II, a steam condensing component I is arranged on one side outside the steam condensing component II, the steam condensing component I comprises a heat exchange cavity I, and a heat exchange pipe I is mounted on the side wall of the heat exchange cavity I in a penetrating manner; a raw water inlet chamber is arranged on one side of the first heat exchange cavity, a raw water outlet chamber is arranged on the other side of the first heat exchange cavity, the second condensing assembly comprises a second heat exchange cavity, a circulating water inlet chamber is arranged on one side of the second heat exchange cavity, a circulating water outlet chamber is arranged on the other side of the second heat exchange cavity, and a second heat exchange pipe is installed on the side wall of the second heat exchange cavity in a penetrating mode. By switching the fifth valve, the sixth valve, the first valve and the second valve, two modes of waste heat utilization in winter and circulating energy storage in summer are achieved, and the requirements of different seasons are responded; the heat exchange function of the feed water treatment workshop is achieved through exhaust of the steam turbine, and steam consumption is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange technology, specifically referring to a heat exchange device for raw water in a thermal power plant. Background Technology

[0002] The condenser is a crucial piece of equipment in the steam power system of a power plant's steam turbine. Its main function is to condense the steam discharged from the turbine into water for recycling. While fulfilling its function, the condenser requires a large amount of circulating water from a pump as a cooling source, and these pumps are among the biggest energy consumers in power plants. This process of cooling the turbine's exhaust water results in a significant loss and waste of heat and energy.

[0003] Since the water production process in the power plant's chemical workshop needs to maintain a water temperature of 20-25℃, the raw water temperature in winter in northern and high-latitude regions can drop below 10℃, which is insufficient to meet the normal operation of the water production equipment. Therefore, it is necessary to add steam to the raw water heater to raise the water temperature, thereby increasing energy consumption. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a raw water heat exchange device for thermal power plants.

[0005] The technical solution adopted by this utility model is as follows: This utility model provides a raw water heat exchange device for a thermal power plant, including a second condensing assembly. A first condensing assembly is provided on one side of the second condensing assembly. The first condensing assembly includes a first heat exchange chamber. A first heat exchange tube is installed through the side wall of the first heat exchange chamber. A raw water inlet chamber is provided on one side of the first heat exchange chamber, and a raw water outlet chamber is provided on the other side of the first heat exchange chamber. The second condensing assembly includes a second heat exchange chamber. A circulating water inlet chamber is provided on one side of the second heat exchange chamber, and a circulating water outlet chamber is provided on the other side of the second heat exchange chamber. A second heat exchange tube is installed through the side wall of the second heat exchange chamber. A turbine exhaust pipe is installed through the side wall of the first heat exchange chamber. An outlet is opened on the outer side wall of the second heat exchange chamber. The first heat exchange chamber and the second heat exchange chamber are connected. A heat exchange assembly is provided on the first condensing assembly, and a heat storage assembly is provided on the second condensing assembly.

[0006] Furthermore, the heat exchange assembly includes a raw water inlet pipe, one end of which is installed through the outer wall of the raw water inlet chamber, the other end of which is connected to an external water source, a fifth valve installed on the raw water inlet pipe, a raw water outlet pipe installed through the outer wall of the raw water outlet chamber, one end of which is installed at the input end of the water treatment hot water tank, and a sixth valve installed on the raw water outlet pipe.

[0007] Furthermore, the thermal storage component includes a circulating water inlet pipe, one end of which is installed through the outer wall of the circulating water inlet chamber, and the other end of which is installed at the output end of the water storage tank. A third valve is installed on the circulating water inlet pipe, and a circulating water pump is installed on the circulating water inlet pipe. One end of a circulating water outlet pipe is installed through the outer wall of the circulating water outlet chamber, and the other end of the circulating water outlet pipe is installed at the input end of the water storage tank. A fourth valve is installed on the circulating water outlet pipe. One end of a first connecting pipe is connected through the side wall of the raw water inlet pipe, and the other end of the first connecting pipe is connected through the side wall of the circulating water inlet pipe. One end of a second connecting pipe is connected through the side wall of the raw water outlet pipe, and the other end of the second connecting pipe is connected through the side wall of the circulating water outlet pipe.

[0008] Furthermore, a first valve is installed on the first connecting pipe.

[0009] Furthermore, a second valve is installed on the second connecting pipe.

[0010] The beneficial effects of this utility model by adopting the above structure are as follows:

[0011] (1) This application realizes two modes of winter waste heat utilization and summer circulating energy storage by switching the fifth and sixth valves with the first and second valves, in response to different seasonal needs.

[0012] (2) This application realizes the heat exchange function of the water treatment workshop through the exhaust of the steam turbine, thus saving steam consumption. Attached Figure Description

[0013] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Fig. 1 This is a front view of a raw water heat exchange device for a thermal power plant according to the present invention.

[0015] Fig. 2 This is a schematic diagram of the structure of a raw water heat exchange device for a thermal power plant according to the present invention.

[0016] The components are as follows: 1. Circulating water inlet chamber; 2. Raw water inlet chamber; 3. Circulating water outlet chamber; 4. Raw water outlet chamber; 5. Circulating water inlet pipe; 6. Circulating water outlet pipe; 7. Raw water inlet pipe; 8. Raw water outlet pipe; 9. First connecting pipe; 10. Second connecting pipe; 11. First valve; 12. Second valve; 13. Third valve; 14. Fourth valve; 15. Fifth valve; 16. Sixth valve; 17. Water treatment hot water tank; 18. Condensing assembly one; 19. Condensing assembly two; 20. Steam turbine exhaust pipe; 21. Circulating water pump; 22. Water storage tank; 23. Heat exchange chamber one; 24. Heat exchange chamber two; 25. Heat exchange tube one; 26. Heat exchange tube two; 27. Water outlet. Detailed Implementation

[0017] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0018] like Figs. 1-2As shown, this utility model proposes a raw water heat exchange device for a thermal power plant, including a second condenser assembly 19. A first condenser assembly 18 is provided on one side of the outer side of the second condenser assembly 19. The first condenser assembly 18 includes a heat exchange chamber 23, with a heat exchange tube 25 installed through the side wall of the first heat exchange chamber 23. A raw water inlet chamber 2 is provided on one side of the first heat exchange chamber 23, and a raw water outlet chamber 4 is provided on the other side. The second condenser assembly 19 includes a second heat exchange chamber 24, with a circulating water inlet chamber 1 on one side of the second heat exchange chamber 24, and a circulating water outlet chamber 1 on the other side of the second heat exchange chamber 24. Heat exchange tube 26 is installed through the side wall of heat exchange chamber 24 in chamber 3. A turbine exhaust pipe 20 is installed through the side wall of heat exchange chamber 1 in chamber 23. A water outlet 27 is opened on the outer side wall of heat exchange chamber 24. Heat exchange chamber 1 in chamber 23 and heat exchange chamber 24 are connected. A heat exchange assembly is installed on condenser assembly 18. The heat exchange assembly includes a raw water inlet pipe 7. One end of the raw water inlet pipe 7 is installed through the outer side wall of the raw water inlet chamber 2, and the other end is connected to a water source. A fifth valve 15 is installed on the raw water inlet pipe 7. The outer side wall of the raw water outlet chamber 4... A raw water outlet pipe 8 is installed through the top, with one end of the raw water outlet pipe 8 installed at the input end of the water treatment hot water tank 17. A sixth valve 16 is installed on the raw water outlet pipe 8. A heat storage component is installed on the condenser assembly 19. The heat storage component includes a circulating water inlet pipe 5, with one end of the circulating water inlet pipe 5 installed through the outer wall of the circulating water inlet chamber 1 and the other end installed at the output end of the water storage tank 22. A third valve 13 is installed on the circulating water inlet pipe 5. A circulating water pump 21 is installed on the circulating water inlet pipe 5. A circulating water pump is installed through the outer wall of the circulating water outlet chamber 3. One end of the outlet pipe 6 and the other end of the circulating outlet pipe 6 are installed at the input end of the water storage tank 22. A fourth valve 14 is installed on the circulating outlet pipe 6. One end of the first connecting pipe 9 is connected through the side wall of the raw water inlet pipe 7. The other end of the first connecting pipe 9 is connected through the side wall of the circulating water inlet pipe 5. One end of the second connecting pipe 10 is connected through the side wall of the raw water outlet pipe 8. The other end of the second connecting pipe 10 is connected through the side wall of the circulating outlet pipe 6. A first valve 11 is installed on the first connecting pipe 9, and a second valve 12 is installed on the second connecting pipe 10.

[0019] In practical use, when the water temperature is low in winter, open the fifth valve 15 and the sixth valve 16. Connect the turbine exhaust pipe 20 to the turbine exhaust. The water source enters the heat exchange tube 25 through the raw water inlet pipe 7 to exchange heat with the turbine exhaust. After heat exchange, the water enters the raw water outlet pipe 8 and then enters the water treatment hot water tank 17 to supply water to the water treatment workshop. In summer or when the water temperature meets the isolation heat exchange function of the water treatment equipment, close the fifth valve 15 and the sixth valve 16, and open the first valve 11, the second valve 12, and the circulating water. Water from pump 21 and water storage tank 22 enters condenser assembly 29 and condenser assembly 18 respectively through circulating water inlet pipe 5 and first connecting pipe 9. After heat exchange in heat exchange tube 25 in condenser assembly 18, it enters circulating water outlet pipe 6 through second connecting pipe 10. Water in heat exchange tube 26 enters circulating water outlet pipe 6 and finally enters water storage tank 22. Then it is circulated again to store the heated water as the raw water source for water treatment. The above is the overall working process of this utility model. This step can be repeated for the next use.

[0020] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows:

[0021] By switching between the fifth and sixth valves and the first and second valves, two modes can be achieved: waste heat utilization in winter and circulating energy storage in summer, responding to different seasonal needs. This application realizes the heat exchange function of the water treatment workshop and saves steam consumption.

[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermal power plant raw water heat exchange device, characterized in that: characterized in that: The utility model provides a heat exchange device, including condensing assembly two (19), the outside one side of condensing assembly two (19) is equipped with condensing assembly one (18), condensing assembly one (18) includes heat exchange chamber one (23), the side wall of heat exchange chamber one (23) is installed heat exchange pipe one (25) through, one side of heat exchange chamber one (23) is equipped with raw water inlet chamber (2), the other side of heat exchange chamber one (23) is equipped with raw water outlet chamber (4), condensing assembly two (19) includes heat exchange chamber two (24), one side of heat exchange chamber two (24) is equipped with 1, the other side of heat exchange chamber two (24) is equipped with circulating outlet chamber (3), the side wall of heat exchange chamber two (24) is installed heat exchange pipe two (26) through, the side wall of heat exchange chamber one (23) is installed steam turbine exhaust pipe (20) through, the outer side wall of heat exchange chamber two (24) is set up outlet (27), heat exchange chamber one (23) and heat exchange chamber two (24) are connected through, condensing assembly one (18) is provided with heat exchange subassembly, and condensing assembly two (19) is provided with heat storage subassembly.

2. The raw water heat exchanger of a thermal power plant according to claim 1, characterized in that: The heat exchange subassembly includes a raw water inlet pipe (7), one end of the raw water inlet pipe (7) is installed through the outer side wall of the raw water inlet chamber (2), the other end of the raw water inlet pipe (7) is connected with a water source, a fifth valve (15) is installed on the raw water inlet pipe (7), a raw water outlet pipe (8) is installed through the outer side wall of the raw water outlet chamber (4), one end of the raw water outlet pipe (8) is installed in the input end of the water treatment hot water tank (17), a sixth valve (16) is installed on the raw water outlet pipe (8).

3. The raw water heat exchanger of a thermal power plant according to claim 2, characterized in that: The heat storage subassembly includes a circulating inlet pipe (5), one end of the circulating inlet pipe (5) is installed through the outer side wall of the circulating inlet chamber (1), the other end of the circulating inlet pipe (5) is installed in the output end of the water storage tank (22), a third valve (13) is installed on the circulating inlet pipe (5), a circulating water pump (21) is installed on the circulating inlet pipe (5), one end of a circulating outlet pipe (6) is installed through the outer wall of the circulating outlet chamber (3), the other end of the circulating outlet pipe (6) is installed in the input end of the water storage tank (22), a fourth valve (14) is installed on the circulating outlet pipe (6), one end of a first communication pipe (9) is connected through the side wall of the raw water inlet pipe (7), the other end of the first communication pipe (9) is connected through the side wall of the circulating inlet pipe (5), one end of a second communication pipe (10) is connected through the side wall of the raw water outlet pipe (8), the other end of the second communication pipe (10) is connected through the side wall of the circulating outlet pipe (6).

4. The raw water heat exchanging device of a thermal power plant according to claim 3, characterized in that: A first valve (11) is installed on the first communication pipe (9).

5. The raw water heat exchanging device of a thermal power plant according to claim 4, characterized in that: A second valve (12) is installed on the second communication pipe (10).

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