High bypass valve waste heat recovery device for thermal power plant

Abstract

The utility model belongs to the technical field of waste heat recovery of high bypass valves for thermal power plants, and particularly relates to a waste heat recovery device of a high bypass valve for a thermal power plant, which comprises a fixing frame, a high bypass valve is fixedly mounted at the top of the fixing frame, a water storage tank is fixedly mounted on the left side of the fixing frame, and a water outlet pipe is fixedly mounted on the left side of the water storage tank. By means of the arranged cooling assembly, in the long-term use process of the high-pressure bypass valve, the temperature of the outer side of the high-pressure bypass valve is high, the draw-off pump can be controlled to convey water flow in the water storage tank to the inner side of the annular heated block, the water flow can adsorb heat, and the heat can be absorbed through the draw-off pump; a second circulating pipe and a water pump enable water flow in the water storage tank to be recycled, the situation that cooling is difficult after the water flow reaches the boiling point is prevented, the water flow can be discharged through a water outlet pipe after reaching the boiling point, new water flow is added to the inner side of the water storage tank, and the cooling effect of the device is good.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery of high bypass valves for thermal power plants, in particular to a waste heat recovery device for high bypass valves for thermal power plants. Background Technique

[0002] A thermal power plant, abbreviated as a power plant, is a factory that uses combustibles (such as coal) as fuel to produce electric energy. Its basic production process is as follows: when the fuel burns, it heats water to generate steam, converting the chemical energy of the fuel into heat energy. The steam pressure drives the steam turbine to rotate, converting heat energy into mechanical energy. Then the steam turbine drives the generator to rotate, converting mechanical energy into electric energy;

[0003] The publication number CN 218764707 U discloses a waste heat recovery device for a high bypass valve of a thermal power plant, including a main body for the inlet water of the recovery device, a main body for the outlet water of the recovery device, and a main body for waste heat recovery. The top of the front side wall of the main body for the inlet water of the recovery device is fixedly equipped with an inlet pipe of the recovery device, and the front end of the inlet pipe of the recovery device is provided with an inlet water tank hole. The utility model has reasonable design. The whole device is divided into three parts, the inlet and outlet water ends at both ends, and the waste heat recovery part in the middle. The heat is conducted by the waste heat recovery main body to the water flowing inside the cycle, heating it. The water absorbs the heat and the temperature rises;

[0004] When it is in use, after the device heats the water flow, it is difficult to quickly circulate and replace the water flow, and the water vapor generated after the water flow is heated is difficult to reuse. Therefore, we propose a waste heat recovery device for a high bypass valve of a thermal power plant. Content of the Utility Model

[0005] The purpose of the utility model is to provide a waste heat recovery device for a high bypass valve of a thermal power plant, which solves the existing problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A waste heat recovery device for a high bypass valve of a thermal power plant, including a fixing frame, a high bypass valve is fixedly installed on the top of the fixing frame, a water storage tank is fixedly installed on the left side of the fixing frame, a water outlet pipe is fixedly installed on the left side of the water storage tank, a pumping pump is fixedly installed on the top of the fixing frame, and an annular heating block is fixedly installed on the outer side of the high bypass valve; a cooling component, the cooling component is installed on the water storage tank, the pumping pump and the annular heating block; a utilization component, the utilization component is installed on it.

[0008] As a further improvement of the above solution, the cooling component includes a first circulation pipe, a second circulation pipe and a water pump. The first circulation pipe is fixedly installed on one side of the extraction pump. One end of the first circulation pipe is fixedly installed inside the annular heat receiving block. The second circulation pipe is fixedly installed inside the annular heat receiving block. The water pump is fixedly installed on the top of the water storage tank. One end of the second circulation pipe is fixedly installed on one side of the water pump.

[0009] As a further improvement of the above solution, the utilization component includes a fan, a connecting pipe, a mounting frame, a protective box, a motor, a driving shaft and fan blades. The fan is fixedly installed on the front side of the water storage tank. The connecting pipe is fixedly installed on the front side of the fan. One end of the connecting pipe is fixedly installed inside the high bypass valve. The mounting frame is fixedly installed inside the connecting pipe. The protective box is fixedly installed inside the mounting frame. The motor is fixedly installed inside the protective box. The driving shaft is fixedly installed at the output end of the motor. The fan blades are fixedly installed on the outside of the driving shaft.

[0010] As a further improvement of the above solution, an installation groove is formed at the top of the fixing frame, and the high bypass valve is fixedly installed inside the installation groove.

[0011] As a further improvement of the above solution, fixing grooves are formed on the front sides of the fixing frame and the high bypass valve, and the connecting pipe is fixedly installed inside the fixing grooves.

[0012] By adopting the above technical solution, the fixing grooves facilitate the installation of the connecting pipe, enabling the air flow generated by the fan to be transmitted inside the high bypass valve.

[0013] As a further improvement of the above solution, a protective groove is formed on one side of the protective box, and the motor is fixedly installed inside the protective groove.

[0014] By adopting the above technical solution, the protective groove facilitates the installation of the motor, making the motor not easily damaged during long-term use.

[0015] As a further improvement of the above solution, the annular heat receiving block is made of a heat-conducting material. A water inlet pipe is provided on the top of the water storage tank, and a sealing cover is threadedly installed on the outside of the water inlet pipe.

[0016] By adopting the above technical solution, the water flow circulating inside the annular heat receiving block can adsorb heat, thereby cooling the high bypass valve. The water inlet pipe facilitates the addition of water flow to the inside of the water storage tank.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] (1) A high - bypass valve waste heat recovery device for thermal power plants of the present utility model, through the arranged cooling component, during the long - term use of the high - bypass valve, the temperature on its outer side is relatively high. It can control the extraction pump to transfer the water flow inside the water storage tank to the inner side of the annular heating block, so that the water flow can adsorb heat. The second circulation pipe and the water pump enable the water flow inside the water storage tank to be recycled, preventing the water flow from being difficult to cool after reaching the boiling point. After the water flow reaches the boiling point, it can be discharged through the water outlet pipe, and new water flow is added to the inner side of the water storage tank, making the cooling effect of the device better.

[0019] (2) A high - bypass valve waste heat recovery device for thermal power plants of the present utility model, through the arranged utilization component, when the water flow temperature inside the water storage tank is relatively high, its water vapor will flow upward. It can control the fan to suck the water vapor inside the water storage tank, so that the relatively hot water vapor is transmitted to the inner side of the high - bypass valve through the connecting pipe, making the combustion effect inside the high - bypass valve better. And there are fan blades arranged inside the connecting pipe, making the gas flow rate relatively fast, and the protective box is convenient for protecting the motor, making the motor not easily damaged. Brief Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a three - dimensional structure schematic diagram of a high - bypass valve waste heat recovery device for thermal power plants proposed by the present utility model;

[0022] Figure 2 It is a partial three - dimensional structure schematic diagram of a high - bypass valve waste heat recovery device for thermal power plants proposed by the present utility model;

[0023] Figure 3 It is a partial three - dimensional structure schematic diagram of a high - bypass valve waste heat recovery device for thermal power plants proposed by the present utility model.

[0024] In the figure: 1, fixing frame; 2, high - bypass valve; 3, water storage tank; 4, water outlet pipe; 5, extraction pump; 6, first circulation pipe; 7, annular heating block; 8, second circulation pipe; 9, water pump; 10, fan; 11, connecting pipe; 12, mounting frame; 13, protective box; 14, motor; 15, drive shaft; 16, fan blade. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0026] Reference Figures 1-3 , a high bypass valve waste heat recovery device for a thermal power plant, including a fixed frame 1, a high bypass valve 2 is fixedly installed on the top of the fixed frame 1, a water storage tank 3 is fixedly installed on the left side of the fixed frame 1, a water outlet pipe 4 is fixedly installed on the left side of the water storage tank 3, a pumping pump 5 is fixedly installed on the top of the fixed frame 1, and an annular heating block 7 is fixedly installed on the outside of the high bypass valve 2; a cooling component, the cooling component is installed on the water storage tank 3, the pumping pump 5 and the annular heating block 7; a utilization component, the utilization component is installed on it.

[0027] In this embodiment, the cooling component includes a first circulation pipe 6, a second circulation pipe 8 and a water pump 9. The first circulation pipe 6 is fixedly installed on one side of the pumping pump 5, one end of the first circulation pipe 6 is fixedly installed inside the annular heating block 7, the second circulation pipe 8 is fixedly installed inside the annular heating block 7, the water pump 9 is fixedly installed on the top of the water storage tank 3, and one end of the second circulation pipe 8 is fixedly installed on one side of the water pump 9.

[0028] In this embodiment, the utilization component includes a fan 10, a connecting pipe 11, a mounting frame 12, a protective box 13, a motor 14, a driving shaft 15 and a fan blade 16. The fan 10 is fixedly installed on the front side of the water storage tank 3, the connecting pipe 11 is fixedly installed on the front side of the fan 10, one end of the connecting pipe 11 is fixedly installed inside the high bypass valve 2, the mounting frame 12 is fixedly installed inside the connecting pipe 11, the protective box 13 is fixedly installed inside the mounting frame 12, the motor 14 is fixedly installed inside the protective box 13, the driving shaft 15 is fixedly installed at the output end of the motor 14, and the fan blade 16 is fixedly installed on the outside of the driving shaft 15.

[0029] In this embodiment, an installation groove is opened on the top of the fixed frame 1, and the high bypass valve 2 is fixedly installed inside the installation groove.

[0030] In this embodiment, fixing grooves are opened on the front sides of the fixed frame 1 and the high bypass valve 2, and the connecting pipe 11 is fixedly installed inside the fixing grooves.

[0031] In this embodiment, a protective groove is opened on one side of the protective box 13, and the motor 14 is fixedly installed inside the protective groove.

[0032] In this embodiment, the material of the annular heating block 7 is a heat-conducting material, a water inlet pipe is provided on the top of the water storage tank 3, and a sealing cover is threadedly installed on the outside of the water inlet pipe.

[0033] In the embodiment of the present application, the implementation principle of a high bypass valve waste heat recovery device for a thermal power plant is as follows: During the long-term use of the high bypass valve 2, the temperature on its outer side is relatively high. The extraction pump 5 can be controlled to transfer the water flow inside the water storage tank 3 to the inner side of the annular heating block 7, so that the water flow can adsorb heat. The second flow pipe 8 and the water pump 9 enable the water flow inside the water storage tank 3 to be recycled, preventing the water flow from being difficult to cool down after reaching the boiling point. After the water flow reaches the boiling point, it can be discharged through the water outlet pipe 4, and new water flow is added to the inner side of the water storage tank 3, so that the cooling effect of the device is better; When the water flow temperature inside the water storage tank 3 is relatively high, its water vapor will flow upward. The fan 10 is controlled to suck the water vapor inside the water storage tank 3, so that the relatively hot water vapor is transmitted to the inner side of the high bypass valve 2 through the connecting pipe 11, making the combustion effect inside the high bypass valve 2 better. Moreover, a fan blade 16 is arranged inside the connecting pipe 11, making the gas flow rate relatively fast, and the protective box 13 is convenient for protecting the motor 14, making the motor 14 not easily damaged.

[0034] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] The above has introduced in detail a high bypass valve waste heat recovery device for a thermal power plant provided by the present utility model. Specific embodiments are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A high bypass valve waste heat recovery device for a thermal power plant, characterized in that, Including: A fixing frame (1), on the top of which a high bypass valve (2) is fixedly installed, on the left side of the fixing frame (1) a water storage tank (3) is fixedly installed, on the left side of the water storage tank (3) a water outlet pipe (4) is fixedly installed, on the top of the fixing frame (1) a pumping pump (5) is fixedly installed, and on the outer side of the high bypass valve (2) an annular heating block (7) is fixedly installed; A cooling component, which is installed on the water storage tank (3), the pumping pump (5) and the annular heating block (7); A utilization component, which is installed on the above.

2. The high bypass valve waste heat recovery device for thermal power plants according to claim 1, characterized in that, The cooling component includes a first flow pipe (6), a second flow pipe (8) and a water pump (9). The first flow pipe (6) is fixedly installed on one side of the pumping pump (5), one end of the first flow pipe (6) is fixedly installed inside the annular heating block (7), the second flow pipe (8) is fixedly installed inside the annular heating block (7), the water pump (9) is fixedly installed on the top of the water storage tank (3), and one end of the second flow pipe (8) is fixedly installed on one side of the water pump (9).

3. A high bypass valve waste heat recovery device for a thermal power plant according to claim 1, characterized in that, The utilization component includes a fan (10), a connecting pipe (11), a mounting frame (12), a protection box (13), a motor (14), a driving shaft (15) and a fan blade (16). The fan (10) is fixedly installed on the front side of the water storage tank (3), the connecting pipe (11) is fixedly installed on the front side of the fan (10), one end of the connecting pipe (11) is fixedly installed inside the high bypass valve (2), the mounting frame (12) is fixedly installed inside the connecting pipe (11), the protection box (13) is fixedly installed inside the mounting frame (12), the motor (14) is fixedly installed inside the protection box (13), the driving shaft (15) is fixedly installed at the output end of the motor (14), and the fan blade (16) is fixedly installed on the outer side of the driving shaft (15).

4. The high bypass valve waste heat recovery device for thermal power plants according to claim 1, characterized in that, An installation groove is formed on the top of the fixing frame (1), and the high bypass valve (2) is fixedly installed inside the installation groove.

5. The high bypass valve waste heat recovery device for thermal power plants according to claim 3, characterized in that, Fixing grooves are formed on the front sides of the fixing frame (1) and the high bypass valve (2), and the connecting pipe (11) is fixedly installed inside the fixing grooves.

6. The high bypass valve waste heat recovery device for thermal power plants according to claim 3, characterized in that, A protection groove is formed on one side of the protection box (13), and the motor (14) is fixedly installed inside the protection groove.

7. A high bypass valve waste heat recovery device for a thermal power plant according to claim 1, characterized in that, The annular heating block (7) is made of a heat-conducting material. A water inlet pipe is arranged on the top of the water storage tank (3), and a sealing cover is threadedly installed on the outer side of the water inlet pipe.

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