Device for effectively preventing vibration of deaerator in heat supply season of thermal power plant

Abstract

The utility model discloses a device for effectively preventing vibration of a deaerator in a heat supply season of a thermal power plant, and belongs to the technical field of thermal power plant equipment. Comprising a heat supply network drainage tank, a deaerator and a low-pressure heater, the bottom face of the heat supply network drainage tank communicates with a first pipeline, the side face of the first pipeline communicates with a pair of second pipelines, the free ends of the pair of second pipelines communicate with pumping pieces, a third pipeline is connected between the free ends of the pumping pieces, and the third pipeline is a four-branch pipe; the two free ends of the third pipeline are both communicated with control pieces, the free end of one control piece is communicated with a fourth pipeline, the tail end of the fourth pipeline is communicated with the deaerator, the free end of the other control piece is communicated with a fifth pipeline, the outer side of the fifth pipeline is communicated with a condensate water conveying pipeline, and the fifth pipeline is further communicated with an inlet of the low-pressure heater. The free end of the fifth pipeline is communicated with a first valve body, the other end of the first valve body is communicated with a sixth pipeline, and the sixth pipeline is further communicated with an outlet of the low-pressure heater.

Description

Technical Field

[0001] This utility model relates to the field of thermal power plant equipment technology, specifically to a device that effectively prevents vibration of the deaerator in a thermal power plant during the heating season. Background Technology

[0002] During the winter heating season at thermal power plants, the proper handling of heat network condensate is crucial. Traditionally, if the condensate temperature is too low, direct entry into the deaerator can cause significant vibration, affecting its stable operation and lifespan, and potentially reducing deaeration efficiency. This negatively impacts the safety and economy of the entire heating system. Existing solutions are either too costly or require complex modifications, and their effectiveness is unsatisfactory, failing to meet the demands of efficient and stable operation in thermal power plants. Therefore, an innovative technical solution is urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a device that effectively prevents vibration of the deaerator in a thermal power plant during the heating season, thereby solving the problems mentioned in the background art.

[0004] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0005] A device for effectively preventing vibration of a deaerator in a thermal power plant during the heating season includes a heat network condensate tank, a deaerator, and a low-pressure heater. The bottom of the heat network condensate tank is connected to a first pipe. A pair of second pipes are connected to the side of the first pipe. Each free end of the pair of second pipes is connected to a pumping component. A third pipe, which is a four-way pipe, is connected between the free ends of the pumping components. Both free ends of the third pipe are connected to control components. One free end of the control component is connected to a fourth pipe, the end of which is connected to the deaerator. The other free end of the control component is connected to a fifth pipe. A condensate delivery pipe is connected to the outside of the fifth pipe. The fifth pipe is also connected to the inlet of the low-pressure heater. A first valve body is connected to the free end of the fifth pipe. The other end of the first valve body is connected to a sixth pipe, which is also connected to the outlet of the low-pressure heater. The free end of the sixth pipe is connected to the deaerator.

[0006] Furthermore, the pumping component includes a pair of second valve bodies, and a pump is connected between the pair of second valve bodies, one of the second valve bodies is connected to a second pipe, and the other second valve body is connected to a third pipe.

[0007] Furthermore, the control component includes a pair of third valve bodies, and a control valve and a check valve are connected between the pair of third valve bodies. One of the third valve bodies is connected to the third pipeline, and the other third valve body is connected to the fourth pipeline and the fifth pipeline respectively.

[0008] Furthermore, the inlet and outlet of the low-pressure heater are both connected to a fourth valve body, and the other end of the fourth valve body is connected to a seventh pipe between the fifth pipe and the sixth pipe respectively. The first valve body is located between a pair of seventh pipes.

[0009] Furthermore, the deaerator is equipped with a nozzle inside, and the sixth pipe is connected to the nozzle.

[0010] Furthermore, the free end of the condensate delivery pipe is connected to the condenser.

[0011] Furthermore, the deaerator has a water outlet.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This device, which effectively prevents the deaerator from vibrating during the heating season of a thermal power plant, introduces some of the low-temperature heat network condensate into the low-pressure heater, avoiding the direct entry of the low-temperature condensate into the deaerator and reducing the amount of low-temperature heat network condensate entering the deaerator. This effectively solves the problem of large vibration in the deaerator caused by the low temperature of the heat network condensate and the large temperature difference between it and the high-temperature water in the deaerator, thus improving the stability and reliability of the deaerator operation and ensuring the safe and stable operation of the entire heating system. Attached Figure Description

[0013] Figure 1 A three-dimensional structural schematic diagram of the device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as disclosed in this embodiment of the utility model;

[0014] Figure 2 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0015] Figure 3 for Figure 1 Enlarged schematic diagram of structure B in the middle;

[0016] Figure 4 This is a schematic diagram of the planar structure of the device disclosed in this embodiment of the invention for effectively preventing vibration of the deaerator in a thermal power plant during the heating season.

[0017] In the diagram: 1. Heat network drain tank; 2. First pipe; 3. Second pipe; 4. Pump; 5. Second valve body; 6. Fourth pipe; 7. Deaerator; 8. Fifth pipe; 9. Sixth pipe; 10. First valve body; 11. Seventh pipe; 12. Fourth valve body; 13. Low-pressure heater; 14. Third pipe; 15. Third valve body; 16. Control valve; 17. Check valve; 18. Condensate delivery pipe. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this application, unless otherwise stated, "multiple" means two or more.

[0020] Example 1

[0021] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a device for effectively preventing vibration of a deaerator in a thermal power plant during the heating season, comprising a heat network drain tank 1, a deaerator 7, and a low-pressure heater 13. The bottom of the heat network drain tank 1 is connected to a first pipe 2, and the side of the first pipe 2 is connected to a pair of second pipes 3. The free ends of both pairs of second pipes 3 are connected to pumping components. A third pipe 14, which is a four-way pipe, is connected between the free ends of the pumping components. Both free ends of the third pipe 14 are connected to control components. One of the control components' free ends is connected to a fourth pipe 6, the end of which is connected to the deaerator 7. The other control component's free end is connected to a fifth pipe 8. The outer side of the fifth pipe 8 is connected to a condensate delivery pipe 18. The fifth pipe 8 is also connected to the inlet of the low-pressure heater 13. The free end of the first valve body 10 is connected to the first valve body 10, and the other end of the first valve body 10 is connected to the sixth pipe 9. The sixth pipe 9 is also connected to the outlet of the low-pressure heater 13. The free end of the sixth pipe 9 is connected to the deaerator 7. The heat network condensate is pumped out from the heat network condensate tank 1 by a pumping device and flows into the fifth pipe 8 and the fourth pipe 6 through the third pipe 14. The heat network condensate in the fourth pipe 6 will flow directly into the deaerator. By diverting the heat network condensate, the amount of low-temperature heat network condensate entering the deaerator 7 can be reduced, thereby reducing the vibration of the deaerator 7. The heat network condensate in the fifth pipe 8 will flow into the low-pressure heater 13. After being heated, it will flow into the deaerator 7 through the sixth pipe 9. Because this part is preheated, the temperature difference with the high-temperature steam in the deaerator 7 can be reduced, further reducing the vibration of the deaerator 7.

[0022] As an embodiment of the present invention, the pumping component further includes a pair of second valve bodies 5, and a pump 4 is connected between the pair of second valve bodies 5. One of the second valve bodies 5 is connected to the second pipe 3, and the other second valve body 5 is connected to the third pipe 14. The pair of second valve bodies 5 are used to control the flow of the heat network drain, while the pump 4 pumps the heat network drain out.

[0023] As an embodiment of this utility model, the control component further includes a pair of third valve bodies 15, and a control valve 16 and a one-way valve 17 are connected between the pair of third valve bodies 15. One of the third valve bodies 15 is connected to the third pipe 14, and the other third valve body 15 is connected to the fourth pipe 6 and the fifth pipe 8 respectively. The pair of third valve bodies 15 are used to control the flow of heat network condensate in the fourth pipe 6 and the fifth pipe 8, the one-way valve 17 prevents the backflow of heat network condensate, and the control valve 16 is used to control the flow rate of heat network condensate.

[0024] As an embodiment of the present invention, the inlet and outlet of the low-pressure heater 13 are both connected to a fourth valve body 12, and the other end of the fourth valve body 12 is connected to a seventh pipe 11 between the fifth pipe 8 and the sixth pipe 9 respectively. The first valve body 10 is located between a pair of seventh pipes 11.

[0025] As an embodiment of this utility model, the deaerator 7 is further provided with a nozzle inside, and the sixth pipe 9 is connected to the nozzle. The heated heat network condensate will be sprayed out through the nozzle, thereby increasing the contact area between the heat network condensate and the steam inside the deaerator 7 and improving the deaeration efficiency.

[0026] As an embodiment of this utility model, the free end of the condensate delivery pipe 18 is connected to the condenser for delivering condensate. The condensate and the heat network drain are heated together by the low-pressure heater 13 and then deoxygenated together by the deaerator 7.

[0027] As one embodiment of this utility model, the deaerator 7 further includes a water outlet from which the deaerated heat network condensate flows out.

[0028] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

[0029] In the embodiments provided in this application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between modules or units, and may be electrical, mechanical, or other forms.

[0030] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. This application is not limited to the exact structures described above and illustrated in the accompanying drawings, and it should not be considered that the specific implementation of this application is limited to these descriptions. For those skilled in the art, various changes and modifications made without departing from the concept of this application should be considered to fall within the protection scope of this application.

Claims

1. A device for effectively preventing vibration of deaerators in thermal power plants during the heating season, characterized in that, The system includes a heat network drain tank (1), a deaerator (7), and a low-pressure heater (13). The bottom surface of the heat network drain tank (1) is connected to a first pipe (2). The side of the first pipe (2) is connected to a pair of second pipes (3). The free ends of the pair of second pipes (3) are each connected to a pumping component. The free ends of the pumping components are connected to a third pipe (14). The third pipe (14) is a four-way pipe. The two free ends of the third pipe (14) are each connected to a control component. One of the control components has a free end connected to a fourth pipe (6). The end of the control unit is connected to the deaerator (7), and the free end of the other control unit is connected to the fifth pipe (8). The outer side of the fifth pipe (8) is connected to the condensate delivery pipe (18). The fifth pipe (8) is also connected to the inlet of the low-pressure heater (13). The free end of the fifth pipe (8) is connected to the first valve body (10). The other end of the first valve body (10) is connected to the sixth pipe (9), and the sixth pipe (9) is also connected to the outlet of the low-pressure heater (13). The free end of the sixth pipe (9) is connected to the deaerator (7).

2. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The pumping component includes a pair of second valve bodies (5), and a pump (4) is connected between the pair of second valve bodies (5). One of the second valve bodies (5) is connected to the second pipe (3), and the other second valve body (5) is connected to the third pipe (14).

3. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The control unit includes a pair of third valve bodies (15), and a control valve (16) and a check valve (17) are connected between the pair of third valve bodies (15). One of the third valve bodies (15) is connected to the third pipe (14), and the other third valve body (15) is connected to the fourth pipe (6) and the fifth pipe (8) respectively.

4. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The inlet and outlet of the low-pressure heater (13) are both connected to a fourth valve body (12). The other end of the fourth valve body (12) is connected to a seventh pipe (11) between the fifth pipe (8) and the sixth pipe (9) respectively. The first valve body (10) is located between a pair of seventh pipes (11).

5. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The deaerator (7) is equipped with a nozzle inside, and the sixth pipe (9) is connected to the nozzle.

6. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The free end of the condensate delivery pipe (18) is connected to the condenser.

7. The device for effectively preventing vibration of deaerators in thermal power plants during the heating season, as described in claim 1, is characterized in that... The deaerator (7) has an outlet.

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