Generator waste gas utilization device and steam turbine power generation system

Abstract

The invention relates to the technical field of generator waste gas utilization, and discloses a generator waste gas utilization device and a steam turbine power generation system. The generator waste gas utilization device comprises a water condensation assembly and a water supply assembly, the water condensation assembly comprises a water condensation tank, a water collection plate and a heat collection plate, the heat collection plate is located above the water collection plate, the water condensation tank is connected with a waste gas introduction pipeline, and waste gas entering the water condensation tank can make contact with the heat collection plate. The waste gas in contact with the heat collecting plate is condensed into condensed water and falls onto the water collecting plate; the water supply assembly comprises a water tank, condensed water on the water collection plate can flow into the water tank, and the water tank is provided with a gas inlet communicated with the waste gas introduction pipeline and a water outlet capable of discharging the condensed water in the water tank. According to the generator waste gas utilization device, the temperature of waste gas can be effectively utilized, pressure can be provided for condensed water through the waste gas, reasonable utilization of the waste gas is achieved, other power equipment does not need to be used for discharging the condensed water, and cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of generator waste gas utilization, and in particular to a generator waste gas utilization device and a steam turbine power generation system. Background Art

[0002] With the increase in electricity consumption, it is difficult for hydropower generation alone to meet the power supply demand. Therefore, thermal power generation needs to be widely used. Thermal power generation is the use of thermal energy obtained by burning fuel (coal, petroleum and its products, natural gas, etc.) to generate electricity. There are two main forms of thermal power generation units: one is to use the boiler to generate high-temperature and high-pressure steam to drive the turbine to rotate and drive the generator to generate electricity, which is called a steam turbine generator set. The other is that the fuel enters the gas turbine to directly convert the thermal energy into mechanical energy to drive the generator to generate electricity, which is called a gas turbine generator set.

[0003] Thermal power plants usually refer to power plants that are mainly powered by steam turbine generator sets. Thermal power plants are mainly composed of four key components, namely boilers, steam turbines, condensers, and generators. Fuel combustion converts chemical energy into thermal energy to heat the water in the boiler into steam, and then the steam thermal energy drives the steam turbine to do work, converting the thermal energy into mechanical energy, and then the mechanical energy is converted into electrical energy through the generator, thus completing the entire power generation process. Among them, steam turbine generators are widely used to generate electricity. The current steam turbine generators have limited utilization of thermal energy in the process of steam power generation. There is still a lot of waste heat in the exhaust gas discharged after power generation. The market often recovers waste heat by condensing waste gas. The way to utilize waste heat from waste gas is relatively single, and the temperature cannot be reasonably utilized. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present invention provides a generator exhaust gas utilization device and a steam turbine power generation system.

[0005] The present invention provides a generator exhaust gas utilization device, comprising: A condensation assembly, comprising a condensation tank, and a water collecting plate and a heat collecting plate arranged inside the condensation tank, wherein the heat collecting plate is located above the water collecting plate, and the condensation tank is connected with an exhaust gas introduction pipe for introducing exhaust gas from a steam turbine generator, and the exhaust gas entering the condensation tank can contact the heat collecting plate, and is configured so that the exhaust gas after contacting the heat collecting plate is condensed into condensed water and falls onto the water collecting plate; The water supply component comprises a water tank, into which the condensed water on the water collecting plate can flow, and the water tank is provided with an air inlet connected to the exhaust gas introduction pipe and a water outlet for discharging the condensed water in the water tank.

[0006] Optionally, the middle part of the heat collecting plate bulges downward to form an inverted cone shape, and a water collecting trough is provided in the middle part of the water collecting plate. The water collecting trough is opposite to the bulge position of the heat collecting plate in the vertical direction, and the water collecting trough is connected to the water tank through a drainage pipe.

[0007] Optionally, the water collecting plate is provided with a plurality of steam holes through which exhaust gas can pass.

[0008] Optionally, a heat conduction pipe is provided on the top of the condensation tank, and the hot air in the condensation tank flows to the target position through the heat conduction pipe.

[0009] Optionally, a heating element is provided above the heat collecting plate, and the heating element is used to heat the hot air flowing toward the heat conducting pipe.

[0010] Optionally, a temperature sensor is provided inside the condensation tank, and the PLC controller can send a corresponding working signal toward the heating element according to temperature information fed back by the temperature sensor.

[0011] Optionally, a partition is provided on the water tank, which divides the inner cavity of the water tank into a water supply tank and a water storage tank. The condensed water on the water collecting plate flows into the water storage tank through a drain pipe. The water storage tank is connected to the water supply tank through an upper water pipe, and the upper water pipe is provided with a one-way valve allowing the condensed water in the water storage tank to flow into the water supply tank. The air inlet is arranged at the top of the water tank and is connected to the water supply tank.

[0012] Optionally, the exhaust gas introduction pipe is connected to an exhaust gas branch pipe, and the exhaust gas branch pipe is communicated with the air inlet.

[0013] Optionally, a first valve is provided on the exhaust gas branch pipe, and the first valve can be selectively opened or closed; And / or, a pressure gauge is provided on the exhaust gas branch pipe; And / or, a second valve is provided on the exhaust gas introduction pipe, and the second valve can be selectively opened or closed.

[0014] The present invention also provides a steam turbine power generation system, comprising a steam boiler, a steam turbine generator and the above-mentioned generator exhaust gas utilization device, wherein the liquid inlet of the steam boiler is connected to the water outlet, the air outlet of the steam turbine generator is connected to the air inlet of the exhaust gas inlet pipe, and the steam boiler and the steam turbine generator are connected through a steam transmission pipe.

[0015] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art: Based on the generator exhaust gas utilization device provided by the present invention, after part of the exhaust gas enters the condensation tank, it exchanges heat with the exhaust gas through the heat collecting plate, and the condensed condensate falls into the water collecting plate and flows into the water tank, and the other part of the exhaust gas can enter the water tank to provide pressure for the condensate in the water tank, thereby realizing the conversion of exhaust gas and pressure and realizing the automatic discharge of the condensate in the water tank. It can be seen that the generator exhaust gas utilization device can effectively utilize the temperature of the exhaust gas, and can provide pressure for the condensate through the exhaust gas, thereby realizing the rational utilization of the exhaust gas, and the discharge of the condensate does not require the use of other power equipment, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0017] In order to more clearly illustrate the implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the implementation mode or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the generator exhaust gas utilization device according to an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 It is a structural schematic diagram of the generator exhaust gas utilization device provided with a regulating control system module in an embodiment of the present invention; Figure 4 for Figure 3 A partial enlarged view of point B in the middle; Figure 5 It is a cross-sectional view of the water condensation component described in the embodiment of the present invention.

[0019] Description of Reference Numerals 1. Steam turbine generator; 2. Steam boiler; 3. Steam transmission pipe; 4. Water supply assembly; 5. Exhaust gas introduction pipe; 6. Condensate assembly; 7. First valve; 8. Pressure gauge; 9. Second valve; 10. Third valve; 11. External flange; 12. Adjustment control system module; 41. Water tank; 42. Water reservoir; 43. Water supply pipe; 44. Check valve; 45. Exhaust gas branch pipe; 46. Water supply pipe; 61. Condensate tank; 62. Water collecting plate; 63. Water collecting trough; 64. Steam hole; 65. Heat collecting plate; 66. Drain pipe; 67. Heat transfer pipe; 68. Heating element; 121. Electric control box; 122. PLC controller; 123. Temperature detection module; 124. Water level detection module; 125. Adjustment drive module; 126. Communication transmission module. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] The following description sets forth many specific details to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the implementation methods in the specification are only part of the implementation methods of the present invention, rather than all of the implementation methods.

[0022] Combination Figures 1 to 5 As shown, the generator exhaust gas utilization device provided in the embodiment of the present invention includes a condensation component 6 and a water supply component 4.

[0023] The condensation assembly 6 includes a condensation tank 61 and a water collecting plate 62 and a heat collecting plate 65 arranged inside the condensation tank 61. The heat collecting plate 65 is located above the water collecting plate 62. The condensation tank 61 is connected to an exhaust gas introduction pipe 5 for introducing exhaust gas from the steam turbine generator 1. The exhaust gas entering the condensation tank 61 can contact the heat collecting plate 65, and is configured so that the exhaust gas after contacting the heat collecting plate 65 is condensed into condensed water and falls onto the water collecting plate 62. Specifically, the interior of the condensate tank 61 is hollow to form a cavity, and the exhaust gas generated by the steam turbine generator 1 has a certain temperature. The high-temperature exhaust gas enters the cavity of the condensate tank 61 through the exhaust gas inlet pipe 5, wherein the exhaust gas inlet pipe 5 is connected to the bottom of the condensate tank 61, so that the exhaust gas enters the cavity of the condensate tank 61 through the bottom of the condensate tank 61, and rises during continuous transportation. The exhaust gas in the rising process can bypass or pass through the water collecting plate 62 and contact the heat collecting plate 65. After the exhaust gas exchanges heat with the heat collecting plate 65, it condenses into condensed water at the bottom of the heat collecting plate 65, and the condensed water falls onto the water collecting plate 62 after falling.

[0024] The water supply assembly 4 includes a water tank 41, and the condensed water on the water collecting plate 62 can flow into the water tank 41 to be collected by the water tank 41. The water tank 41 is provided with an air inlet connected to the exhaust gas introduction pipe 5 and a water outlet for discharging the condensed water in the water tank 41. Specifically, the air inlet is arranged at the top of the water tank 41, and part of the exhaust gas generated by the steam turbine generator 1 can be introduced into the water tank 41 through the exhaust gas introduction pipe 5. During the continuous transportation process, the exhaust gas provides pressure to the condensed water in the water tank 41, and the condensed water can be discharged through the water outlet under the action of pressure, and then the condensed water is transported to the target location, for example, to the liquid inlet of the steam boiler 2, etc., without the need to add other pumping equipment, thereby reducing costs.

[0025] Based on the generator exhaust gas utilization device provided by the present invention, after part of the exhaust gas enters the condensation tank, it exchanges heat with the exhaust gas through the heat collecting plate 65, and the condensed condensate falls into the water collecting plate 62 and flows into the water tank 41, and the other part of the exhaust gas can enter the water tank 41 to provide pressure for the condensate in the water tank 41, thereby realizing the conversion of exhaust gas and pressure and realizing the automatic discharge of the condensate in the water tank 41. It can be seen that the generator exhaust gas utilization device can effectively utilize the temperature of the exhaust gas, and can provide pressure for the condensate through the exhaust gas, thereby realizing the rational utilization of the exhaust gas, and the discharge of the condensate does not require the use of other power equipment, thereby saving costs.

[0026] In some embodiments, the condensate tank 61 is disposed on the top of the water tank 41, so that the condensate discharged from the condensate tank 61 enters the water tank 41 under gravity, without adding power equipment such as a water pump, thereby saving costs. Moreover, the condensate tank 61 is disposed on the top of the water tank 41, making the structure of the generator exhaust gas utilization device more compact and reducing space occupancy.

[0027] It is understandable that, in order to provide sufficient power for the transportation of condensed water, a pump body may also be provided on the drain pipe 66 between the condensed water tank 61 and the water tank 41. In this manner, the positional relationship between the condensed water tank 61 and the water tank 41 is not restricted, making the installation more flexible.

[0028] In some embodiments, Figure 5 As shown, the middle of the heat collecting plate 65 is convex downward to form an inverted cone shape, and a water collecting groove 63 is provided in the middle of the water collecting plate 62. The water collecting groove 63 is opposite to the convex position of the heat collecting plate 65 in the vertical direction, and the water collecting groove 63 is connected to the water tank 41 through a drain pipe 66. Specifically, one end of the drain pipe 66 is connected to the water collecting groove 63, and the other end of the drain pipe 66 passes through the outer wall of the condensation tank 61 and extends to the top of the water reservoir 42 of the water tank 41.

[0029] Specifically, the cross-section of the condensation tank 61 is circular, the heat collecting plate 65 is a disc-shaped structure, the outer ring of the heat collecting plate 65 is fixedly connected to the inner wall of the condensation tank 61, and the middle part of the heat collecting plate 65 bulges downward, so that the heat collecting plate 65 is in the shape of an inverted cone, that is, the cross-section of the heat collecting plate 65 is an inverted triangle. After the high-temperature exhaust gas contacts the heat collecting plate 65, it will condense into condensed water on the lower surface of the heat collecting plate 65, and the condensed water will flow along the slope surface of the heat collecting plate 65 toward the lower convex position of the heat collecting plate 65, so that the dripping condensed water can fall into the water collecting groove 63 of the water collecting plate 62, and then flow into the water tank 41 through the discharge pipe.

[0030] This design makes it easier to collect condensed water, has a simple structure, and saves manufacturing costs.

[0031] In some embodiments, continue to refer to Figure 5, a plurality of steam holes 64 for exhaust gas to pass through are provided on the water collecting plate 62. The plurality of steam holes 64 are evenly distributed on the water collecting plate 62, so that the plurality of steam holes 64 are arranged on the periphery of the water collecting tank 63, and the water collecting tank 63 is concave relative to the position of the water collecting plate 62 where the steam holes 64 are arranged, and the exhaust gas enters the cavity of the condensation tank 61 through the bottom of the condensation tank 61, and rises in the process of continuous transportation, and the exhaust gas in the rising process can pass through the steam holes 64 on the water collecting plate 62 and contact the heat collecting plate 65.

[0032] This design allows the exhaust gas to evenly contact the heat collecting plate 65, increasing the uniformity of heat exchange and ensuring that condensed water is evenly formed at the bottom of the heat collecting plate 65 so as to stably fall into the water collecting trough 63 along the inclined surface of the heat collecting plate 65.

[0033] In some embodiments, in combination Figure 1 , Figure 3 and Figure 5 As shown, a heat conducting pipe 67 is provided on the top of the condensation tank 61, and the hot air in the condensation tank 61 flows to the target position through the heat conducting pipe 67, and the target position may be a dryer or a heating device.

[0034] Specifically, combined Figure 1 and Figure 3 As shown, the end of the heat pipe 67 is provided with an external flange 11, and the heat pipe 67 is connected to the later heating equipment, such as a dryer, a heater, etc., through the external flange 11, so as to reasonably utilize the waste heat of the power plant exhaust gas. The heat pipe 67 is provided with a third valve 10, which can control the on and off of the heat pipe 67 and thus control the discharge of heat.

[0035] In some embodiments, Figure 5 As shown, a heating element 68 is provided above the heat collecting plate 65 , and the heating element 68 is used to heat the hot air flowing toward the heat conducting pipe 67 .

[0036] In this design, when the amount of heat to be transported through the heat pipe 67 is high, the air on the side of the heat collecting plate 65 facing away from the water collecting plate 62 can be further heated by the heating element 68 to meet the heat transport demand.

[0037] In some embodiments, a temperature sensor is disposed inside the condensation tank 61 , and the PLC controller 122 can send a corresponding working signal toward the heating element 68 according to the temperature information fed back by the temperature sensor.

[0038] Specifically, the temperature sensor is arranged on the side of the heat collecting plate 65 away from the water collecting plate 62 to measure the temperature of the gas flowing into the heat conducting pipe 67. The heating element 68 can be an electric heating plate, etc. Figure 3 and Figure 4As shown, the generator exhaust gas utilization device also includes a regulating control system module 12, which includes an electric control box 121 arranged on the water tank 41, and the electric control box 121 is located on one side of the condensate tank 61. The electric control box 121 is provided with a PLC controller 122, a temperature detection module 123 and a regulating drive module 125. The temperature sensor is connected to the temperature detection module 123 by signal, and the temperature sensor feeds back the detected temperature information to the temperature detection module 123. When the temperature information received by the temperature detection module 123 is lower than the preset temperature, the PLC controller 122 controls the electric heating plate to be powered on for auxiliary heating through the regulating drive module 125, so as to realize automatic regulation and accurate temperature control.

[0039] In some embodiments, in combination Figure 1 and Figure 3 As shown, a partition is provided on the water tank 41, and the partition extends in the vertical direction. The partition divides the inner cavity of the water tank 41 into a water supply tank and a water storage tank 42. The condensed water on the water collecting plate 62 flows into the water storage tank 42 through the drain pipe 66. The water storage tank 42 is connected to the water supply tank through the upper water pipe 43, and the upper water pipe 43 is provided with a one-way valve 44 that allows the condensed water in the water storage tank 42 to flow into the water supply tank. It can be understood that the one-way valve 44 should be able to prevent the condensed water in the water supply tank from flowing into the water storage tank 42. The air inlet is set at the top of the water tank 41 and connected to the water supply tank, and the drain outlet is set near the bottom of the water tank 41 and connected to the water supply tank.

[0040] In this design, the condensed water flows into the water reservoir 42 through the drain pipe 66, and then flows to the water supply tank through the water supply pipe 43. Due to the one-way valve 44, the condensed water in the water supply tank cannot flow back into the water reservoir 42, ensuring the stability of the condensed water in the water supply tank. When supplying water, exhaust gas is provided to the water supply tank through the air inlet. As the pressure increases, the condensed water in the water supply tank will flow out to the target location through the water outlet. The water supply is convenient, and no other power equipment is required, saving costs.

[0041] Among them, an exhaust port is provided on the top of the water tank 41, and the exhaust port is connected to the water supply tank. When exhaust gas is supplied to the water supply tank to discharge the condensed water in the water supply tank, the exhaust port can be opened to discharge the high-pressure gas in the water supply tank to a designated position, so as to facilitate the reintroduction of condensed water.

[0042] In addition, by adopting the design of the water reservoir 42, when the water consumption is large, the water reservoir 42 can be replenished by external equipment to meet the water supply demand.

[0043] It is understandable that the water tank 41 may not have a water reservoir 42 but may directly have a water supply tank, and the condensed water on the water collecting plate 62 may directly flow into the water supply tank of the water tank 41 .

[0044] In some embodiments, in combination Figure 1 and Figure 2 As shown, the exhaust gas introduction pipe 5 is connected to an exhaust gas branch pipe 45, and the exhaust gas branch pipe 45 is communicated with the air inlet.

[0045] Specifically, one end of the exhaust branch pipe 45 is connected to the position of the exhaust gas introduction pipe 5 connected to the condensate tank 61, and the other end of the exhaust branch pipe 45 is connected to the air intake pipe, so that the exhaust gas in the exhaust gas introduction pipe 5 can enter the water tank 41 through the exhaust branch pipe 45.

[0046] In some embodiments, a first valve 7 is provided on the exhaust branch pipe 45, and the first valve 7 can be selectively opened or closed. In this design, the exhaust branch pipe 45 can be opened and closed by opening and closing the first valve 7, thereby controlling whether the exhaust gas enters the water tank 41, specifically, the water supply pool of the water tank 41. During the water supply process, the first valve 7 is opened and the second valve 9 on the exhaust gas introduction pipe 5 is closed, so that the exhaust gas will enter the water supply pool of the water tank 41 along the exhaust gas introduction pipe 5 and the exhaust branch pipe 45, which is convenient for controlling the exhaust gas flow direction.

[0047] In some embodiments, a pressure gauge 8 is provided on the exhaust branch pipe 45. Specifically, the pressure gauge 8 is provided on the side of the first valve 7 away from the exhaust introduction pipe 5, and the pressure of the exhaust gas in the water supply tank flowing to the water tank 41 can be detected in real time by the pressure gauge 8.

[0048] In some embodiments, a second valve 9 is provided on the exhaust gas introduction pipe 5, and the second valve 9 can be selectively opened or closed. In this design, the exhaust gas branch pipe 45 can be opened and closed by opening and closing the second valve 9, thereby controlling whether the exhaust gas enters the condensation tank 61. During the exhaust gas condensation process, the second valve 9 is opened and the first valve 7 is closed, and the exhaust gas will enter the condensation tank 61 along the exhaust gas introduction pipe 5, which is convenient for controlling the exhaust gas flow direction.

[0049] In some embodiments, the water outlet of the water tank 41 is connected to the liquid inlet of the steam boiler 2. At this time, the regulating control system module 12 also includes a water level detection module 124. The steam boiler 2 is provided with a water level sensor connected to the water level detection module 124 signal. The water level in the steam boiler 2 can be detected by the water level sensor and fed back to the water level detection module 124. When the water level is low, the PLC controller 122 controls the first valve 7 to open and the second valve 9 to close through the regulating drive module 125, so as to realize the water replenishment in the steam boiler 2 at a later stage.

[0050] In some embodiments, the adjustment control system module 12 also includes a communication transmission module 126, which can be used to remotely control devices such as mobile phones during the control process, thereby increasing the convenience of operation.

[0051] In some embodiments, a PLC controller 122 is fixedly mounted on the outer wall of the middle part of the bottom end of the electric control box 121, and a temperature detection module 123, a water level detection module 124, an adjustment drive module 125 and a communication transmission module 126 are fixedly mounted on the outer walls of the electric control box 121 on both sides of the PLC controller 122. This design can make the structure more compact.

[0052] In some embodiments, the first valve 7, the second valve 9 and the third valve 10 of the present application are all electrically controlled valves, which facilitates the electrical control of the subsequent control system.

[0053] Combination Figure 1 and Figure 3 As shown, the present invention also provides a steam turbine power generation system, including a steam boiler 2, a steam turbine generator 1 and the above-mentioned generator exhaust gas utilization device, wherein the generator exhaust gas utilization device includes all the technical features of the above-mentioned generator exhaust gas utilization device. The liquid inlet of the steam boiler 2 is connected to the water outlet, the air outlet of the steam turbine generator 1 is connected to the air inlet of the exhaust gas introduction pipe 5, and the steam boiler 2 and the steam turbine generator 1 are connected through the steam transmission pipe 3. Specifically, the steam boiler 2 is fixedly installed on the outer wall of one side of the steam turbine generator 1, the steam transmission end of the steam boiler 2 is connected to the steam transmission pipe 3, and the other end of the steam transmission pipe 3 is connected to the steam inlet end of the steam turbine generator 1. The water supply tank of the water tank 41 is located on one side of the steam boiler 2, and the water storage tank 42 of the water tank 41 is located on one side of the steam turbine generator 1.

[0054] The working process of the steam turbine power generation system provided by the present invention is as follows: The steam boiler 2 is used to heat water into steam for use, and the steam is input into the steam turbine generator 1 through the steam pipe 3 for power generation. The first valve 7 is controlled to be closed, and the second valve 9 is controlled to be opened. The exhaust gas after use of the steam turbine generator 1 enters the condensate tank 61 through the exhaust gas introduction pipe 5. The exhaust steam rises through the steam holes 64 on the water collecting plate 62 and contacts the heat collecting plate 65, and heat is transferred and condensed into water and falls into the water collecting tank 63. The condensate collected in the water collecting tank 63 flows into the water storage tank 42 of the water tank 41 through the drain pipe 66. Among them, the condensate tank 61 can be connected to the later heating equipment, such as a dryer, a heater, etc., through the external flange 11 at the end of the heat conducting pipe 67, so as to realize the utilization of the heat in the condensate tank 61, and then realize the reasonable utilization of the waste heat of the power plant exhaust gas.

[0055] The condensed water in the water reservoir 42 enters the water supply tank through the one-way valve 44 and the water supply pipe 43. When it is necessary to add water to the steam boiler 2 in the later stage, the first valve 7 is controlled to be opened and the second valve 9 is controlled to be closed, so that the exhaust gas enters the water supply tank through the exhaust steam branch pipe, thereby increasing the pressure in the water supply tank, and the water in the water supply tank is pressed into the steam boiler 2 through the water supply pipe 46. The water supply can be supplemented to the water reservoir 42 in the later stage. The overall structure realizes the conversion of the exhaust gas pressure and the automatic filling of the water in the steam boiler 2 without the help of power equipment such as a water pump, thereby reducing costs.

[0056] In this design, a generator waste gas utilization device is set on the basis of the structure of the traditional power plant generator set, which can condense the waste gas after power generation and utilize the waste heat, which can be used for later drying, heating, etc., and can realize the conversion of waste gas pressure and automatic water supply of steam boiler 2, without adding water pumps, thus reducing equipment costs. The overall waste gas waste heat is fully utilized in a variety of ways, and the remote temperature and water level can be conveniently adjusted, which has market practicality.

[0057] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0058] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments described herein, but should conform to the widest scope consistent with the principles and novel features of the invention described herein.

Claims

1. A generator exhaust gas utilization device, characterized in that: include: A condensation assembly (6), comprising a condensation tank (61), and a water collecting plate (62) and a heat collecting plate (65) arranged inside the condensation tank (61), the heat collecting plate (65) being located above the water collecting plate (62), the condensation tank (61) being connected to an exhaust gas introduction pipe (5) for introducing exhaust gas from a steam turbine generator (1), the exhaust gas entering the condensation tank (61) being able to contact the heat collecting plate (65), and being configured such that the exhaust gas after contacting the heat collecting plate (65) is condensed into condensed water and falls onto the water collecting plate (62); The water supply assembly (4) comprises a water tank (41), into which condensed water on the water collecting plate (62) can flow, and the water tank (41) is provided with an air inlet connected to the exhaust gas introduction pipe (5) and a water outlet for discharging condensed water in the water tank (41).

2. The generator exhaust gas utilization device according to claim 1, characterized in that: The middle portion of the heat collecting plate (65) protrudes downward to form an inverted cone shape, and the middle portion of the water collecting plate (62) is provided with a water collecting groove (63), the water collecting groove (63) and the protruding position of the heat collecting plate (65) are opposite in the vertical direction, and the water collecting groove (63) is connected to the water tank (41) through a drainage pipe (66).

3. The generator exhaust gas utilization device according to claim 1, characterized in that: The water collecting plate (62) is provided with a plurality of steam holes (64) through which the exhaust gas can pass.

4. The generator exhaust gas utilization device according to claim 1, characterized in that: A heat conduction pipe (67) is provided on the top of the condensation tank (61), and the hot air in the condensation tank (61) flows toward the target position through the heat conduction pipe (67).

5. The generator exhaust gas utilization device according to claim 4, characterized in that: A heating element (68) is provided above the heat collecting plate (65), and the heating element (68) is used to heat the hot air flowing toward the heat conducting pipe (67).

6. The generator exhaust gas utilization device according to claim 5, characterized in that: A temperature sensor is provided inside the condensation tank (61), and the PLC controller (122) can send a corresponding working signal toward the heating element (68) according to temperature information fed back by the temperature sensor.

7. The generator exhaust gas utilization device according to claim 1, characterized in that: The water tank (41) is provided with a partition, the partition divides the inner cavity of the water tank (41) into a water supply tank and a water storage tank (42), the condensed water on the water collecting plate (62) flows into the water storage tank (42) through a drainage pipe (66), the water storage tank (42) and the water supply tank are connected through an upper water pipe (43), and a one-way valve (44) is provided on the upper water pipe (43) for allowing the condensed water in the water storage tank (42) to flow into the water supply tank, and the air inlet is arranged at the top of the water tank (41) and is connected to the water supply tank.

8. The generator exhaust gas utilization device according to claim 7, characterized in that: The exhaust gas introduction pipe (5) is connected to an exhaust gas branch pipe (45), and the exhaust gas branch pipe (45) is in communication with the air inlet.

9. The generator exhaust gas utilization device according to claim 8, characterized in that: The exhaust gas branch pipe (45) is provided with a first valve (7), and the first valve (7) can be selectively opened or closed; and / or, a pressure gauge (8) is provided on the exhaust gas branch pipe (45); And / or, the exhaust gas introduction pipe (5) is provided with a second valve (9), and the second valve (9) can be selectively opened or closed.

10. A steam turbine power generation system, characterized in that: The invention comprises a steam boiler (2), a steam turbine generator (1) and a generator exhaust gas utilization device according to any one of claims 1 to 9, wherein the liquid inlet of the steam boiler (2) is connected to the water outlet, the air outlet of the steam turbine generator (1) is connected to the air inlet of the exhaust gas introduction pipe (5), and the steam boiler (2) and the steam turbine generator (1) are connected via a steam transmission pipe (3).

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