Boiler water supply pipeline capable of increasing temperature
Through the design of a boiler, a boiler including a steam turbine, a hydrophobic expansion box, a preheating pipeline, etc., the water pipeline of the steam is solved, and the steam thermal loss in the thermal power plant has achieved efficient energy utilization and the improvement of water supply temperature.
Patent Information
- Application Number
- CN202421251975.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-03
AI Technical Summary
In thermal power plants, steam from three heaters is collected in the terminal high-temperature heater, and a large amount of steam is not utilized, causing heat loss of steam.
A boiler with a boiler with a temperature is designed, including the turbine, the hydrophobic expansion box, the preheating pipe, the preheating pipe, the hydrostatic, the condenser, the hermometer, and the water outlet pipe. The efficient utilization of steam and the temperature of water giving water.
Effectively solve the problem of steam thermal loss, improve the energy utilization efficiency and economic benefits of the boiler system, and ensure the stable operation of the system.
Smart Images
Figure CN222417406U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of self-use electric equipment in power plants, and in particular relates to a boiler feed water pipeline with increased temperature. Background Art
[0002] In thermal power plants, in order to increase the feed water temperature and improve the economic performance of the unit, a heater is generally added to the heat recovery system to use the steam from the unit to heat the condensate. The high-temperature steam is discharged from the high-temperature extraction section and enters each heater step by step for heating. The heated steam condenses into water and is discharged into the next heater for secondary heating. The low-temperature condensate enters from the cold end, exchanges heat with the extraction surface, and enters the next high-temperature heater for reheating.
[0003] The heating steam volume of the three heaters is large, and an additional drain pump is needed to handle the condensate inside the heater, which not only increases the production cost but also wastes electricity. At the same time, the steam of the three heaters is collected in the terminal high-temperature heater, and a large amount of steam is not utilized, resulting in heat loss of the steam.
[0004] Therefore, a boiler feed water line with increased temperature is proposed. Utility Model Content
[0005] The utility model aims to provide a boiler feed water pipeline with increased temperature, which has the function of increasing the boiler feed water temperature and solves the problem that the terminal high-temperature heater in the prior art collects steam from three heaters, a large amount of steam is not utilized, and causes steam heat loss.
[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: the utility model provides a boiler feed water pipeline with increased temperature, including a steam turbine, a first water pipeline, a second water pipeline, a third water pipeline and a fourth water pipeline are respectively led out of the steam turbine, the first water pipeline, the second water pipeline, the third water pipeline and the fourth water pipeline are respectively connected to the first drain expansion tank, the second drain expansion tank, the third drain expansion tank and the fourth drain expansion tank, and the bottoms of the first water pipeline, the second water pipeline, the third water pipeline and the fourth water pipeline are respectively connected to the first drain pipe, the second drain pipe, the third drain pipe and the fourth drain pipe. The water pipe and the fourth drainage pipe are connected to the discharge main pipe, the third water expansion tank is connected to the discharge main pipe through a water pump pipe, the water pump pipe is provided with a first condensate pump group, the third water expansion tank and the fourth water expansion tank are connected to the feed water preheater through a preheating pipe, one end of the feed water preheater is connected to the condenser through a condensing pipe, the feed water preheater is connected to the shaft seal heater through a connecting pipe, the shaft seal heater is connected to the water outlet pipe through a heating pipe, one end of the water outlet pipe is connected to the connecting pipe, and the other end is provided with a second condensate pump group connected to the condenser, the condenser is connected to the rear end of the steam turbine, and the middle of the water outlet pipe is connected to the heating pipe.
[0007] Preferably, a steam inlet pipe is provided at the front side of the steam turbine, and a steam inlet valve is provided on the steam inlet pipe.
[0008] Preferably, the first hydrophobic expansion tank is connected to the second hydrophobic expansion tank via a first connecting pipe, and the second hydrophobic expansion tank is connected to the third water delivery expansion tank via a second connecting pipe.
[0009] Preferably, the first drain pipe is provided with a first drain valve, the second drain pipe is provided with a second drain valve, the third drain pipe is provided with a third drain valve, and the fourth drain pipe is provided with a fourth drain valve.
[0010] Preferably, a connecting valve is provided on the connecting pipeline.
[0011] Preferably, a heating valve is provided on the heating pipe.
[0012] Preferably, a water outlet valve is provided on the water outlet pipe, and the water outlet valve is arranged between the connecting position of the connecting pipe and the heating pipe on the water outlet pipe.
[0013] Preferably, the first drain pipe, the second drain pipe, the third drain pipe and the fourth drain pipe are respectively provided in two pieces and are all connected to the main drain pipe.
[0014] Preferably, the first regulating valve, the second regulating valve, the third regulating valve and the fourth regulating valve are provided on the discharge main pipe corresponding to the connection positions of the first drain pipe, the second drain pipe, the third drain pipe and the fourth drain pipe, and the first regulating valve, the second regulating valve, the third regulating valve and the fourth regulating valve are respectively arranged between the two first drain pipes, the second drain pipe, the third drain pipe and the fourth drain pipe on the discharge main pipe.
[0015] Compared with the prior art, the advantages and positive effects of the utility model are:
[0016] 1. The utility model optimizes energy utilization and improves the overall economic benefits and operational stability of the boiler system;
[0017] 2. The utility model has the function of increasing the boiler feed water temperature, which solves the problem of the prior art that the steam of three heaters is collected in the terminal high-temperature heater, a large amount of steam is not utilized, and the problem of steam heat loss is caused. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.
[0019] Figure 1 It is a schematic diagram of the structure of a boiler feed water pipeline with increased temperature;
[0020] In the above figure, 1, steam turbine, 2, steam inlet pipe, 3, steam inlet valve, 4, first water pipeline, 5, second water pipeline, 6, third water pipeline, 7, fourth water pipeline, 8, first drain expansion tank, 9, second drain expansion tank, 10, third drain expansion tank, 11, fourth drain expansion tank, 12, first connecting pipe, 13, second connecting pipe, 14, first drain pipe, 15, discharge main pipe, 16, first drain valve, 17, second drain pipe, 18, second drain valve, 19, third drain pipe, 20, The third drain valve, 21. The fourth drain pipe, 22. The fourth drain valve, 23. The first regulating valve, 24. The second regulating valve, 25. The third regulating valve, 26. The fourth regulating valve, 27. The water pump pipeline, 28. The first condensate pump group, 29. The preheating pipeline, 30. The feed water preheater, 31. The condensate pipeline, 32. The connecting pipeline, 33. The shaft seal heater, 34. The connecting valve, 35. The heating pipeline, 36. The water outlet pipeline, 37. The heating valve, 38. The water outlet valve, 39. The second condensate pump group, 40. The condenser. DETAILED DESCRIPTION
[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0023] Embodiment 1, as Figure 1 As shown, a boiler feed water pipeline with increased temperature includes a steam turbine 1, which converts high-pressure steam into mechanical energy and drives a generator to generate electricity through a shaft.
[0024] The first water pipeline 4, the second water pipeline 5, the third water pipeline 6 and the fourth water pipeline 7 are respectively led out from the steam turbine 1, and the first water pipeline 4, the second water pipeline 5, the third water pipeline 6 and the fourth water pipeline 7 are respectively connected to the first drain expansion tank 8, the second drain expansion tank 9, the third drain expansion tank 10 and the fourth drain expansion tank 11. The first water pipeline 4, the second water pipeline 5, the third water pipeline 6 and the fourth water pipeline 7 respectively lead steam of different temperatures from different positions of the steam turbine 1, and respectively transport steam to the first drain expansion tank 8, the second drain expansion tank 9, the third drain expansion tank 10 and the fourth drain expansion tank 11. Each drain expansion tank collects and expands the drain from the corresponding water pipeline, and reduces the drain pressure by expansion.
[0025] The bottoms of the first water pipeline 4, the second water pipeline 5, the third water pipeline 6 and the fourth water pipeline 7 are respectively connected to the discharge main pipe 15 through the first drain pipe 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21. The discharge main pipe 15 collects the discharged condensate and transports it to subsequent treatment. The first drain pipe 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21 discharge the condensate from the bottom of each hydrophobic expansion tank.
[0026] The third water delivery expansion tank is connected to the discharge main pipe 15 through the water pump pipe 27. The third water delivery expansion tank can be additionally pumped through the water pump pipe 27. A first condensate pump group 28 is arranged on the water pump pipe 27. The first condensate pump group 28 helps to transport the condensate to improve efficiency.
[0027] The third water supply expansion tank and the fourth water supply expansion tank are connected to the feed water preheater 30 through the preheating pipe 29. The feed water preheater 30 performs heat exchange on the incoming pipe, and draws out the water for the third water supply expansion tank and the fourth water supply expansion tank through the preheating pipe 29 and sends it to the feed water preheater 30. One end of the feed water preheater 30 is connected to the condenser 40 through the condensing pipe 31, and the water in the third drain expansion tank 10 and the fourth drain expansion tank 11 drawn out from the preheating pipe 29 is sent to the condenser 40 through the condensing pipe 31. The feed water preheater 30 is connected to the shaft seal heater 33 through the connecting pipe 32, and receives the water in the shaft seal heater 33 through the connecting pipe 32. The shaft seal heater 33 is connected to the outlet pipe 36 through the heating pipe 35, and the water in the outlet pipe 36 is introduced into the shaft seal heater 33 through the heating pipe 35.
[0028] One end of the outlet pipe 36 is connected to the connecting pipe 32, and the other end is provided with a second condensate pump group 39 connected to the condenser 40. The second condensate pump group 39 provides pumping power. The condenser 40 is connected to the rear end of the steam turbine 1. The steam after the steam turbine 1 does work enters the condenser 40 and condenses into water, which is drawn out from the outlet pipe 36 and can be directly sent to the connecting pipe 32 and sent to the feed water preheater 30. The middle part of the outlet pipe 36 is connected to the heating pipe 35. The water in the outlet pipe 36 can be drawn from the heating pipe 35 to the shaft seal heater 33 for heating and then sent out from the linkage pipe.
[0029] The following is a detailed description of the design of the above key components:
[0030] The steam turbine 1 is provided with a steam inlet pipe 2 at the front side, and the steam inlet pipe 2 controls the high-pressure steam to enter the steam turbine 1. The steam inlet pipe 2 is provided with a steam inlet valve 3, and the steam inlet valve 3 regulates the opening and closing of the steam inlet pipe 2 to control the flow rate of the internal steam.
[0031] The first hydrophobic expansion tank 8 is connected to the second hydrophobic expansion tank 9 through the first connecting pipe 12, and the second hydrophobic expansion tank 9 is connected to the third water delivery expansion tank through the second connecting pipe 13. The first connecting pipe 12 and the second connecting pipe 13 allow the condensed water to be transmitted between the first hydrophobic expansion tank 8, the first hydrophobic expansion tank 8 and the third hydrophobic expansion tank 10, so as to overflow and flow out.
[0032] A first drain valve 16 is provided on the first drain pipe 14, a second drain valve 18 is provided on the second drain pipe 17, a third drain valve 20 is provided on the third drain pipe 19, and a fourth drain valve 22 is provided on the fourth drain pipe 21. The first drain valve 16, the second drain valve 18, the third drain valve 20, and the fourth drain valve 22 respectively control the switches of the first drain pipe 14, the second drain pipe 17, the third drain pipe 19, and the fourth drain pipe 21 to adjust the flow rate of condensate flowing out.
[0033] The communication pipe 32 is provided with a communication valve 34 , and the communication valve 34 controls the opening and closing of the communication pipe 32 .
[0034] The heating pipe 35 is provided with a heating valve 37 , and the heating valve 37 controls the opening and closing of the heating pipe 35 .
[0035] The water outlet pipe 36 is provided with a water outlet valve 38, and the opening and closing of the water outlet pipe 36 is controlled by the water outlet valve 38. The water outlet valve 38 is arranged between the connecting position of the connecting pipe 32 and the heating pipe 35 on the water outlet pipe 36. After the water outlet valve 38 is closed, the water in the water outlet pipe 36 is directly sent to the shaft seal heater 33 through the heating pipe 35.
[0036] The first drain pipe 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21 are respectively connected to the main drain pipe 15, one for introducing water into the main drain pipe 15, and the other for draining water from each hydrophobic expansion tank.
[0037] The discharge main pipe 15 is provided with a first regulating valve 23, a second regulating valve 24, a third regulating valve 25 and a fourth regulating valve 26 at the connection positions corresponding to the first drain pipe 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21. The discharge main pipe 15 can be temporarily closed by the first regulating valve 23, the second regulating valve 24, the third regulating valve 25 and the fourth regulating valve 26.
[0038] The first regulating valve 23, the second regulating valve 24, the third regulating valve 25 and the fourth regulating valve 26 are respectively arranged between the two first drain pipes 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21 on the discharge main pipe 15. After the discharge main pipe 15 is closed by the first regulating valve 23, the second regulating valve 24, the third regulating valve 25 and the fourth regulating valve 26, the water in the discharge main pipe 15 is introduced into the hydrophobic expansion tank through one drain pipe, and then discharged from another drain pipe. The number of the first drain valve 16, the second drain valve 18, the third drain valve 20 and the fourth drain valve 22 is set to 2 corresponding to the number of the first drain pipe 14, the second drain pipe 17, the third drain pipe 19 and the fourth drain pipe 21, so that each drain pipe can be controlled to be opened and closed.
[0039] The standard parts used in the utility model can all be purchased from the market, special-shaped parts can be customized according to the description in the specification and the drawings, the specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art, the machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.
[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A boiler feed water pipeline with increased temperature, characterized in that: The steam turbine comprises a steam turbine, wherein a first water pipeline, a second water pipeline, a third water pipeline and a fourth water pipeline are led out from the steam turbine respectively, the first water pipeline, the second water pipeline, the third water pipeline and the fourth water pipeline are connected to a first drain expansion tank, a second drain expansion tank, a third drain expansion tank and a fourth drain expansion tank respectively, and the bottoms of the first water pipeline, the second water pipeline, the third water pipeline and the fourth water pipeline are connected to a discharge main pipe through a first drain pipe, a second drain pipe, a third drain pipe and a fourth drain pipe respectively, and the third water pipeline is connected to a discharge main pipe through a first drain pipe, a second drain pipe, a third drain pipe and a fourth drain pipe respectively. The box is connected to the discharge main pipe through a water pump pipe, a first condensate pump group is arranged on the water pump pipe, a third water delivery expansion tank and a fourth water delivery expansion tank are connected to the feed water preheater through a preheating pipe, one end of the feed water preheater is connected to the condenser through a condensing pipe, the feed water preheater is connected to the shaft seal heater through a connecting pipe, the shaft seal heater is connected to the outlet water pipe through a heating pipe, one end of the outlet water pipe is connected to the connecting pipe, and the other end of the outlet water pipe is provided with a second condensate pump group connected to the condenser, the condenser is connected to the rear end of the steam turbine, and the middle of the outlet water pipe is connected to the heating pipe.
2. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: A steam inlet pipeline is arranged at the front side of the steam turbine, and a steam inlet valve is arranged on the steam inlet pipeline.
3. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The first hydrophobic expansion tank is connected to the second hydrophobic expansion tank via a first connecting pipe, and the second hydrophobic expansion tank is connected to the third water delivery expansion tank via a second connecting pipe.
4. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The first drain pipe is provided with a first drain valve, the second drain pipe is provided with a second drain valve, the third drain pipe is provided with a third drain valve, and the fourth drain pipe is provided with a fourth drain valve.
5. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The communication pipeline is provided with a communication valve.
6. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The heating pipe is provided with a heating valve.
7. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The water outlet pipe is provided with a water outlet valve, and the water outlet valve is arranged between the connecting position of the connecting pipe and the heating pipe on the water outlet pipe.
8. A boiler feed water pipeline with increased temperature according to claim 1, characterized in that: The first drain pipe, the second drain pipe, the third drain pipe and the fourth drain pipe are respectively provided with two in number and are all connected to the main drain pipe.
9. A boiler feed water pipeline with increased temperature according to claim 8, characterized in that: The first regulating valve, the second regulating valve, the third regulating valve and the fourth regulating valve are arranged on the discharge main pipe at the connection positions corresponding to the first drain pipe, the second drain pipe, the third drain pipe and the fourth drain pipe. The first regulating valve, the second regulating valve, the third regulating valve and the fourth regulating valve are respectively arranged between the two first drain pipes, the second drain pipe, the third drain pipe and the fourth drain pipe on the discharge main pipe.