Waste heat utilization device for coal-fired power plant

Abstract

The invention relates to the field of combustion power plants, in particular to a coal-fired power plant waste heat utilization device which comprises a reaction tank and a heating tank, an auxiliary assembly is fixedly installed outside a connecting pipe, and the auxiliary assembly is located between the connecting pipe and a detection assembly. The desulfurization assembly is arranged, the one-way gas inlet valve is opened, then waste gas subjected to primary desulfurization is guided into the reaction tank along the flow guide pipe, lime water is contained in the reaction pipe, the lime water makes direct contact with acid gas, a neutralization reaction is carried out, harmless neutral salt particles are generated, and the purpose of waste gas purification is achieved; when waste gas enters the reaction tank along the flow guide pipe, generated airflow pushes lime water to flow, the vortex blades on one side are pushed by utilizing generated flowing force, so that the vortex blades rotate along the rotating rod, and in the rotating process, the lime water can be stirred, so that the lime water is uniformly distributed, and the purification effect on acid gas is improved.

Description

Technical Field

[0001] The invention relates to the technical field of combustion power plants, and in particular to a waste heat utilization device for a coal-fired power plant. Background Art

[0002] In the daily power generation of coal-fired power plants, the waste smoke produced after coal combustion also contains a large amount of sintering waste gas. These waste gases contain a large amount of heat. The waste heat in the waste gas can also be recycled. Waste heat recovery is an important way to improve economy and save fuel.

[0003] For example, the announcement number CN218064938U proposes a waste heat utilization device for a coal-fired power plant, including a base, a filter box fixedly connected to the top of the base, an air intake pipe fixedly connected to one side of the filter box, a filter plate fixedly connected to the inner wall of the filter box, a purification plate fixedly connected to the inner wall of the filter box, an adsorption plate fixedly connected to the inner wall of the filter box, a slot provided on the inner wall of the adsorption plate, a limit box movably connected to one side of the filter box, and a threaded hole provided on the inner wall of the limit box. The waste heat utilization device for a coal-fired power plant can filter out bacteria from flue gas by setting a filter plate, can effectively filter out impurities in the gas by setting a purification plate, and can have a strong adsorption performance by setting an adsorption plate, thereby facilitating the filtration and purification of flue gas generated by the coal-fired power plant and improving the utilization of flue gas by the waste heat utilization device.

[0004] At present, the waste gas generated by combustion power plants is mostly removed by spray towers for acid gas removal, but the desulfurization effect is not good, and acid gas still remains in the waste gas. In the process of waste heat utilization, after long-term use, it will inevitably cause corrosion to the connecting pipes and cause pipeline leakage; in addition, due to the high temperature and high pressure characteristics of the waste gas generated by combustion power plants, the connecting pipes will age and break during long-term use. If damage and leakage occur, timely maintenance is required to avoid secondary pollution caused by waste gas leakage, as well as waste heat loss and excessive energy loss. However, some connecting pipes are long, and it is difficult to quickly find the damaged leakage location in a short time; and when the diameter of the leakage point of the connecting pipe is small, it is difficult to intuitively observe the leakage location, which has limitations.

[0005] In view of the above problems, a waste heat utilization device for a coal-fired power plant is proposed. Summary of the invention

[0006] In view of the above-mentioned background of the prior art, acid gas is removed by a spray tower, but the desulfurization effect is not good, and acid gas still remains in the exhaust gas, which causes long-term corrosion to the connecting pipes and causes pipeline leakage. In addition, some connecting pipes are long, and it is difficult to quickly find the damaged leakage position in a short time. Moreover, when the diameter of the leakage point of the connecting pipe is small, it is difficult to intuitively observe the leakage position. The purpose of the present invention is to provide a waste heat utilization device for a coal-fired power plant.

[0007] In order to solve the above problems, the technical solution adopted by the present invention is as follows: A waste heat utilization device for a coal-fired power plant, comprising a reaction tank and a heating tank, the side wall of the reaction tank is fixedly connected with an outlet pipe, the side wall of the heating tank is fixedly connected with an air collecting pipe, the outlet pipe and the air collecting pipe are fixedly connected via a connecting pipe, a desulfurization component is rotatably installed inside the reaction tank, a detection component is fixedly installed outside the connecting pipe, an auxiliary component is fixedly installed outside the connecting pipe, and the auxiliary component is located between the connecting pipe and the detection component.

[0008] Furthermore, a heat collecting chamber is provided inside the heating tank, the gas collecting pipe is fixedly connected to the heat collecting chamber, a water storage chamber is provided inside the heating tank, the heat collecting chamber is located outside the water storage chamber, a first one-way valve is installed inside the gas outlet pipe, and a second one-way valve is installed inside the gas collecting pipe.

[0009] Furthermore, the desulfurization component includes a guide pipe, which is fixedly connected to the side wall of the reaction tank, a one-way air intake valve is installed inside the guide pipe, and a rotating rod is rotatably connected to the bottom wall of the reaction tank.

[0010] Furthermore, a plurality of mounting rings are fixedly connected to the side wall of the rotating rod, a vortex blade is symmetrically fixedly connected to the side wall of each mounting ring, and the guide tube is eccentrically arranged.

[0011] Furthermore, the detection assembly includes a first mounting plate and a second mounting plate, the first mounting plate is fixedly connected to the port of the outlet pipe, the second mounting plate is fixedly connected to the port of the collecting pipe, a sleeve is fixedly connected to the side wall of the first mounting plate, and one end of the sleeve is fixedly connected to the side wall of the second mounting plate.

[0012] Furthermore, the sleeve is a cylindrical structure and is sleeved on the outside of the connecting tube. The sleeve is made of a transparent material. The side wall of the first mounting disk is fixedly connected to a heat insulation wall. The heat insulation wall is made of a transparent material. One end of the heat insulation wall is fixedly connected to the side wall of the second mounting disk. The heat insulation wall is a cylindrical structure and is sleeved on the outside of the connecting tube. A vacuum layer is provided between the sleeve and the heat insulation wall.

[0013] Furthermore, adjacent side walls of the first mounting plate and the second mounting plate are fixedly connected with first fixing rings, one of the side walls of the first fixing ring is fixedly connected with a detection membrane, one end of the detection membrane is fixedly connected to the other side wall of the first fixing ring, the detection membrane is a cylindrical structure, and is sleeved on the outside of the connecting tube, and the detection membrane is laid on the side wall of the insulation wall.

[0014] Furthermore, the auxiliary component includes two second fixing rings, one of which is fixedly connected to the side wall of the first mounting plate, and the other is fixedly connected to the side wall of the second mounting plate, and each side wall of the second fixing ring is fixedly connected with multiple support blocks at equal angles.

[0015] Furthermore, each of the two support blocks located in the same horizontal plane is fixedly connected to a transverse plate, a plurality of connecting plates are fixedly connected equidistantly between two adjacent transverse plates, and each of the transverse plates and the bottom wall of the connecting plate is fixedly connected to a plurality of cone heads.

[0016] Furthermore, a first circular hole is formed at an equal angle at the top of each cone head, a second circular hole is formed at the top of each transverse plate and connecting plate, and each of the first circular holes is connected to an adjacent second circular hole.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By setting a desulfurization component and opening a one-way air inlet valve, the exhaust gas after the initial desulfurization is then introduced into the interior of the reaction tank along the guide pipe. Lime water is filled in the reaction tube. The characteristics of the lime water are used to make it directly contact with the acidic gas, generate a neutralization reaction, and generate harmless neutral salt particles, thereby achieving the purpose of purifying the exhaust gas. The guide pipe is eccentrically arranged so that the guide pipe and the rotating rod are in a misaligned state. As a result, when the exhaust gas enters the interior of the reaction tank along the guide pipe, the generated airflow pushes the lime water to flow, and the flow force is used to push the vortex blades on one side, so that the vortex blades rotate along the rotating rod. During the rotation, the lime water can be stirred so that the lime water is evenly distributed. Compared with stirring the lime water by the airflow generated by the introduced exhaust gas, the range of the airflow stirring is limited and uneven, which affects the purification effect. The device uses the thrust generated by the introduced airflow to rotate the vortex blades, so that the lime water is fully in contact with the acidic gas in the exhaust gas, thereby improving The invention has a good purification effect on acidic gas, and does not require additional driving force, thus achieving energy-saving effect; by setting up the detection component, the pressure at the leakage point of the connecting pipe is reduced, resulting in accelerated outflow of the airflow. At this time, the flow rate of the gas is relatively large. When the overflowing airflow contacts the detection membrane, the contact point between the detection membrane and the airflow will be melted and penetrated to produce a corresponding shape. For example, if the damaged part on the connecting pipe is a circular hole, a corresponding circular hole will appear on the detection membrane. If it is a long crack, a corresponding long crack will appear on the detection membrane. Since the sleeve and the heat insulation wall are made of transparent materials, the state of the connecting pipe and the detection membrane can be intuitively observed, so that the repair measures can be determined in time according to the damaged shape on the detection membrane, and by observing the damaged position of the detection membrane, the damaged and leaked position of the connecting pipe can be quickly and accurately found, reducing the time for the staff to find the damaged position, and achieving the purpose of timely repair after the leakage of the connecting pipe; By setting up auxiliary components, when the connecting pipe leaks, but the diameter of the leak is small and difficult to observe, multiple horizontal plates are set outside the connecting pipe and multiple connecting plates are set between the horizontal plates, and multiple cone heads are set on the horizontal plates and the bottom walls of the connecting plates. As long as the connecting pipe leaks, no matter how small the leak is, as long as it generates airflow, it will contact the cone head. After the airflow contacts the cone head, it will diverge to the surroundings under the action of the cone head, expanding the diameter of the airflow. Finally, the airflow diverged by the cone head contacts the detection membrane, leaving a corresponding shape on the detection membrane, thereby amplifying the position of the connecting pipe leak and making it more eye-catching. Even if the leak is small, the staff can quickly find the leak position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall cross-sectional view of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3It is a structural schematic diagram of the heating tank in the present invention; Figure 4 It is a structural schematic diagram of the reaction tank in the present invention; Figure 5 is a cross-sectional view of the connecting pipe in the present invention; Figure 6 for Figure 5 A partial enlarged schematic diagram of part A; Figure 7 is a cross-sectional view of the detection component in the present invention; Figure 8 It is a partial structural schematic diagram of the detection component in the present invention; Fig. 9 It is a structural schematic diagram of the auxiliary components in the present invention; Fig.10 It is a partial structural schematic diagram of the auxiliary components in the present invention; Fig.11 It is a structural schematic diagram of the horizontal plate in the present invention; Fig.12 for Fig.11 A partial enlarged schematic diagram of part B.

[0019] In the figure: 1. reaction tank; 11. air outlet pipe; 12. first one-way valve; 2. connecting pipe; 3. heating tank; 31. air collecting pipe; 32. heat collecting chamber; 33. water storage chamber; 34. second one-way valve; 4. desulfurization component; 41. guide pipe; 42. one-way air inlet valve; 43. rotating rod; 44. mounting ring; 45. vortex blade; 5. detection component; 51. first mounting plate; 52. second mounting plate; 53. sleeve; 54. insulation wall; 55. vacuum layer; 56. first fixing ring; 57. detection film; 6. auxiliary component; 61. second fixing ring; 62. horizontal plate; 63. connecting plate; 64. support block; 65. cone head; 66. first circular hole; 67. second circular hole. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments.

[0021] In order to solve the problem of waste gas generated by combustion power plants, most of the acid gas is removed through a spray tower, but the desulfurization effect is not good, and there is still acid gas in the waste gas. In the process of waste heat utilization, after long-term use, it is inevitable that the connecting pipe 2 will be corroded, causing pipeline leakage. There are limited technical problems, such as Figure 1 - Figure 4 As shown, the following preferred technical solutions are provided: A waste heat utilization device for a coal-fired power plant comprises a reaction tank 1 and a heating tank 3. The side wall of the reaction tank 1 is fixedly connected with an exhaust pipe 11. During the operation of the combustion power plant, various waste gas components are generated due to fuel combustion and various process flows. A large amount of acidic gas is contained in these waste gases. Lime water is provided in the reaction tank 1 to purify the waste gas after the initial desulfurization by the spray tower, reduce the presence of acidic gas, and avoid long-term use. The acidic gas causes corrosion damage to the inside of the device. The lime water in the reaction tank 1 is used for secondary purification. The desulfurized gas floats to the top of the reaction tank 1. As the waste gas is continuously purified for the second time, the waste gas after the second purification is discharged along the outlet pipe 11, and enters the heat collecting chamber 32 inside the heating tank 3 through the connecting pipe 2 and the gas collecting pipe 31. Since the waste gas generated by the combustion power plant has a high temperature of one hundred to two hundred degrees Celsius, the waste heat of the waste gas can be used to heat the water inside the water storage chamber 33 to play a role in waste heat utilization. The side wall of the heating tank 3 is fixedly connected with the gas collecting pipe 31, and the outlet pipe 11 and the gas collecting pipe 31 are fixedly connected through the connecting pipe 2.

[0022] A desulfurization assembly 4 is rotatably installed inside the reaction tank 1. By setting the desulfurization assembly 4, the one-way air inlet valve 42 is opened, and then the exhaust gas after the initial desulfurization is introduced into the reaction tank 1 along the guide pipe 41. Lime water is filled in the reaction tank 1. By utilizing the characteristics of the lime water, it is directly in contact with the acidic gas to generate a neutralization reaction to generate harmless neutral salt particles, thereby achieving the purpose of purifying the exhaust gas; wherein the guide pipe 41 is eccentrically arranged, so that the guide pipe 41 and the rotating rod 43 are in a dislocated state, so that when the exhaust gas enters the interior of the reaction tank 1 along the guide pipe 41, the generated airflow pushes the lime water into the reaction tank 1. The vortex blade 45 is driven by the flow force generated, so that the vortex blade 45 rotates along the rotating rod 43. During the rotation, the lime water can be stirred to make the lime water evenly distributed. Compared with the lime water stirred by the airflow generated by the introduced exhaust gas, the range of the airflow stirring is limited and uneven, which affects the purification effect. The device uses the thrust generated by the introduced airflow to rotate the vortex blade 45, so that the lime water is fully in contact with the acid gas in the exhaust gas, thereby improving the purification effect of the acid gas, and does not require additional driving force, thereby achieving an energy-saving effect.

[0023] A detection component 5 is fixedly installed on the outside of the connecting pipe 2. By setting the detection component 5, the pressure at the leakage point of the connecting pipe 2 is reduced, causing the airflow to flow out faster. At this time, the flow rate of the gas is relatively large. When the overflowing airflow comes into contact with the detection membrane 57, the detection membrane 57 will be melted and penetrated at the contact point with the airflow to produce a corresponding shape. For example, if the damaged part on the connecting pipe 2 is a circular hole, a corresponding circular hole will appear on the detection membrane 57. If it is a long crack, a corresponding long crack will appear on the detection membrane 57. Since the sleeve 53 and the insulation wall 54 are both made of transparent materials, the status of the connecting pipe 2 and the detection membrane 57 can be intuitively observed, so that the repair measures can be determined in time according to the damaged shape appearing on the detection membrane 57, and by observing the damaged position of the detection membrane 57, the leakage position of the connecting pipe 2 can be quickly and accurately found, reducing the time for staff to find the damaged position, thereby achieving the purpose of timely repair after the leakage of the connecting pipe 2 occurs.

[0024] An auxiliary component 6 is fixedly installed on the outside of the connecting pipe 2, and the auxiliary component 6 is located between the connecting pipe 2 and the detection component 5; by setting the auxiliary component 6, by setting a plurality of transverse plates 62 on the outside of the connecting pipe 2 and a plurality of connecting plates 63 between the transverse plates 62, and setting a plurality of cone heads 65 on the bottom walls of the transverse plates 62 and the connecting plates 63, as long as the connecting pipe 2 leaks, no matter how small the leak is, as long as it generates airflow, it will contact the cone head 65. After the airflow contacts the cone head 65, it will diverge to the surroundings under the action of the cone head 65, expanding the diameter of the airflow ejection, and finally the airflow after being diverged by the cone head 65 contacts the detection membrane 57, leaving a corresponding shape on the detection membrane 57, thereby amplifying the position of the leakage of the connecting pipe 2 to make it more eye-catching. Even if the leakage is small, the staff can quickly find the leakage position.

[0025] A heat collecting chamber 32 is provided inside the heating tank 3, and the gas collecting pipe 31 is fixedly connected to the heat collecting chamber 32. A water storage chamber 33 is provided inside the heating tank 3, and the heat collecting chamber 32 is located outside the water storage chamber 33. A first one-way valve 12 is installed inside the gas outlet pipe 11, and a second one-way valve 34 is installed inside the gas collecting pipe 31. The arrangement of the first one-way valve 12 and the second one-way valve 34 ensures that the exhaust gas after secondary purification can only enter the connecting pipe 2 along the gas outlet pipe 11, and then enter the heating tank 3 through the gas collecting pipe 31.

[0026] The desulfurization assembly 4 includes a guide pipe 41 , which is fixedly connected to the side wall of the reaction tank 1 , a one-way air inlet valve 42 is installed inside the guide pipe 41 , and a rotating rod 43 is rotatably connected to the bottom wall of the reaction tank 1 .

[0027] A plurality of mounting rings 44 are fixedly connected to the side wall of the rotating rod 43 , and a vortex blade 45 is symmetrically fixedly connected to the side wall of each mounting ring 44 , and the guide pipe 41 is eccentrically arranged.

[0028] In this scheme: by setting the desulfurization component 4, when the waste gas passes through the spray tower for the first desulfurization, there is still residual acid gas in it. In order to prevent the residual acid gas from causing acid corrosion to the connecting pipe 2 and causing pipeline leakage, the one-way air intake valve 42 is first opened, wherein the one-way air intake valve 42 is set so that the waste gas can only enter the inside of the reaction tank 1 along the guide pipe 41, and then the waste gas after the first desulfurization is introduced into the inside of the reaction tank 1 along the guide pipe 41. The inside of the reaction tank 1 is filled with lime water. By utilizing the characteristics of the lime water, it is directly contacted with the acid gas, a neutralization reaction occurs, and harmless neutral salt particles are generated, thereby achieving the purpose of purifying the waste gas; wherein the guide pipe 41 is eccentrically arranged so that the guide pipe 41 and the rotating rod 4 3 is in a dislocated state, so when the exhaust gas enters the interior of the reaction tank 1 along the guide pipe 41, the generated airflow pushes the lime water to flow, and the vortex blade 45 on one side is pushed by the generated flow force, so that the vortex blade 45 rotates along the rotating rod 43. During the rotation process, the lime water can be stirred to make the lime water evenly distributed. Compared with the lime water stirred by the airflow generated by the introduced exhaust gas, the airflow stirring range is limited and uneven, which affects the purification effect. The device uses the thrust generated by the introduced airflow to rotate the vortex blade 45, so that the lime water is fully in contact with the acid gas in the exhaust gas, thereby improving the purification effect of the acid gas, and does not require additional driving force, thereby achieving an energy-saving effect; The reaction equations are as follows: lime powder reacts with water: CaO+H20→Ca(OH)2; calcium hydroxide reacts with acidic gas: Ca(OH)2+SO2→CaSO3+H2O.

[0029] In order to solve the problem that the exhaust gas generated by the combustion power plant has the characteristics of high temperature and high pressure, the connecting pipe 2 will be aged and damaged during long-term use. If it is damaged and leaks, it needs to be repaired in time to avoid secondary pollution caused by exhaust gas leakage and waste heat loss, resulting in excessive energy loss. However, some connecting pipes 2 are long and it is difficult to quickly find the damaged and leaked position in a short time. Figure 5 - Figure 8 As shown, the following preferred technical solutions are provided: The detection assembly 5 includes a first mounting plate 51 and a second mounting plate 52. The first mounting plate 51 is fixedly connected to the port of the exhaust pipe 11, and the second mounting plate 52 is fixedly connected to the port of the collecting pipe 31. A sleeve 53 is fixedly connected to the side wall of the first mounting plate 51, and one end of the sleeve 53 is fixedly connected to the side wall of the second mounting plate 52.

[0030] The sleeve 53 is a cylindrical structure and is sleeved on the outside of the connecting pipe 2. The sleeve 53 is made of transparent material. The side wall of the first mounting disk 51 is fixedly connected with a heat insulation wall 54. The heat insulation wall 54 is made of transparent material. One end of the heat insulation wall 54 is fixedly connected to the side wall of the second mounting disk 52. The heat insulation wall 54 is a cylindrical structure and is sleeved on the outside of the connecting pipe 2. A vacuum layer 55 is provided between the sleeve 53 and the heat insulation wall 54.

[0031] The adjacent side walls of the first mounting plate 51 and the second mounting plate 52 are fixedly connected with a first fixing ring 56, wherein a detection membrane 57 is fixedly connected to the side wall of one of the first fixing rings 56, and one end of the detection membrane 57 is fixedly connected to the side wall of the other first fixing ring 56. The detection membrane 57 is a cylindrical structure and is sleeved on the outside of the connecting pipe 2. The detection membrane 57 is laid on the side wall of the insulation wall 54.

[0032] In this solution, a detection film 57 is arranged outside the connecting pipe 2. When the connecting pipe 2 is aged and leaks, the high-temperature and high-pressure gas inside the connecting pipe 2 will overflow along the crack. Since the pressure at the leaking point of the connecting pipe 2 is reduced, the airflow is accelerated. At this time, the gas flow rate is relatively large. When the overflowing airflow contacts the detection film 57, the contact point between the detection film 57 and the airflow will be melted and penetrated to produce a corresponding shape. For example, if the damaged part on the connecting pipe 2 is a circular hole, a corresponding circular hole will appear on the detection film 57. If it is a long crack, a corresponding long crack will appear on the detection film 57. Since the sleeve 53 and the heat-insulating wall 54 are made of transparent materials, the status of the connecting pipe 2 and the detection film 57 can be visually observed, so that the repair measures can be determined in time according to the damaged shape of the detection film 57, and after a leakage alarm occurs, the staff can quickly and accurately find the location where the connecting pipe 2 is damaged and leaked by observing the damaged position of the detection film 57, thereby reducing the time for the staff to find the damaged position, and achieving the purpose of timely repair after the connecting pipe 2 leaks; wherein the detection film 57 is a material that is easily penetrated by high-speed airflow but not melted by high temperature, such as polyimide; After the connecting pipe 2 leaks, secondary leakage of exhaust gas will occur, causing pollution, as well as heat loss and energy loss. In order to avoid the above situation, a sleeve 53 and an insulating wall 54 are provided, and a vacuum layer 55 is formed between the sleeve 53 and the insulating wall 54 to insulate the connecting pipe 2 and the insulating wall 54 to avoid secondary pollution caused by exhaust gas overflow, and to collect heat inside the insulating wall 54 to avoid heat loss, thereby improving the practicality of the device. The sleeve 53 is a hard transparent material, which not only facilitates the observation of the connecting pipe 2 and the detection film 57, but also protects the connecting pipe 2 to avoid damage caused by external impact. In addition, compared with the prior art, the connecting pipe 2 is insulated by thermal insulation cotton to avoid heat loss. The vacuum layer 55 used in this device has a better insulation effect.

[0033] In order to solve the technical problem that when the diameter of the leaking part of the connecting pipe 2 is small, it is difficult to visually observe the leaking position, there are limitations, such as Fig. 9 - Fig.12 As shown, the following preferred technical solutions are provided: The auxiliary component 6 includes two second fixing rings 61, one of which is fixedly connected to the side wall of the first mounting plate 51, and the other is fixedly connected to the side wall of the second mounting plate 52. A plurality of support blocks 64 are fixedly connected to the side wall of each second fixing ring 61 at equal angles.

[0034] Each of the two support blocks 64 located in the same horizontal plane is fixedly connected to a transverse plate 62 , a plurality of connecting plates 63 are fixedly connected equidistantly between two adjacent transverse plates 62 , and a plurality of cone heads 65 are fixedly connected to the bottom wall of each transverse plate 62 and the connecting plate 63 .

[0035] A first circular hole 66 is formed at an equal angle at the top of each cone head 65 , a second circular hole 67 is formed at the top of each cross plate 62 and connecting plate 63 , and each first circular hole 66 is connected to an adjacent second circular hole 67 .

[0036] In this solution: by setting the auxiliary component 6, when the connecting pipe 2 leaks, but the diameter of the leak is small and difficult to observe, by setting multiple horizontal plates 62 outside the connecting pipe 2 and multiple connecting plates 63 between the horizontal plates 62, and setting multiple cone heads 65 on the bottom walls of the horizontal plates 62 and the connecting plates 63, as long as the connecting pipe 2 leaks, no matter how small the leak is, as long as it generates airflow, it will contact the cone head 65. After the airflow contacts the cone head 65, it will diverge to the surroundings under the action of the cone head 65, expanding the diameter of the airflow, and finally the airflow diverged by the cone head 65 contacts the detection film 57, leaving a corresponding shape on the detection film 57, thereby amplifying the leak position of the connecting pipe 2 and making it more eye-catching. Even if the leak is small, the staff can quickly find the leak position; Since the cross plates 62 and the connecting plates 63 are densely distributed, there may be a situation where the airflow is obstructed, so a plurality of first circular holes 66 are opened on the cone head 65, and second circular holes 67 are opened on the corresponding cross plates 62 and connecting plates 63, and the first circular holes 66 and the second circular holes 67 are connected, so that when a pipeline leak occurs, the overflowing airflow can be further diverged through the first circular holes 66 and the second circular holes 67, thereby avoiding airflow obstruction and improving the practicality of the device.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste heat utilization device for a coal-fired power plant, comprising a reaction tank (1) and a heating tank (3), characterized in that: The side wall of the reaction tank (1) is fixedly connected to an air outlet pipe (11), the side wall of the heating tank (3) is fixedly connected to an air collecting pipe (31), the air outlet pipe (11) and the air collecting pipe (31) are fixedly connected via a connecting pipe (2), a desulfurization component (4) is rotatably mounted inside the reaction tank (1), a detection component (5) is fixedly mounted outside the connecting pipe (2), an auxiliary component (6) is fixedly mounted outside the connecting pipe (2), and the auxiliary component (6) is located between the connecting pipe (2) and the detection component (5).

2. A waste heat utilization device for a coal-fired power plant according to claim 1, characterized in that: A heat collecting chamber (32) is provided inside the heating tank (3), the gas collecting pipe (31) is fixedly connected to the heat collecting chamber (32), a water storage chamber (33) is provided inside the heating tank (3), the heat collecting chamber (32) is located outside the water storage chamber (33), a first one-way valve (12) is installed inside the gas outlet pipe (11), and a second one-way valve (34) is installed inside the gas collecting pipe (31).

3. The waste heat utilization device for a coal-fired power plant according to claim 1, characterized in that: The desulfurization assembly (4) comprises a flow guide pipe (41), the flow guide pipe (41) being fixedly connected to the side wall of the reaction tank (1), a one-way air intake valve (42) being installed inside the flow guide pipe (41), and a rotating rod (43) being rotatably connected to the inner bottom wall of the reaction tank (1).

4. A waste heat utilization device for a coal-fired power plant according to claim 3, characterized in that: The side wall of the rotating rod (43) is fixedly connected to a plurality of mounting rings (44), and the side wall of each mounting ring (44) is symmetrically fixedly connected to a vortex blade (45), and the flow guide pipe (41) is eccentrically arranged.

5. The waste heat utilization device for a coal-fired power plant according to claim 1, characterized in that: The detection assembly (5) comprises a first mounting plate (51) and a second mounting plate (52); the first mounting plate (51) is fixedly connected to a port of an air outlet pipe (11); the second mounting plate (52) is fixedly connected to a port of an air collecting pipe (31); a sleeve (53) is fixedly connected to a side wall of the first mounting plate (51); and one end of the sleeve (53) is fixedly connected to a side wall of the second mounting plate (52).

6. A waste heat utilization device for a coal-fired power plant according to claim 5, characterized in that: The sleeve (53) is a cylindrical structure and is sleeved on the outside of the connecting tube (2). The sleeve (53) is made of a transparent material. The side wall of the first mounting plate (51) is fixedly connected to a heat insulating wall (54). The heat insulating wall (54) is made of a transparent material. One end of the heat insulating wall (54) is fixedly connected to the side wall of the second mounting plate (52). The heat insulating wall (54) is a cylindrical structure and is sleeved on the outside of the connecting tube (2). A vacuum layer (55) is provided between the sleeve (53) and the heat insulating wall (54).

7. A waste heat utilization device for a coal-fired power plant according to claim 6, characterized in that: Adjacent side walls of the first mounting plate (51) and the second mounting plate (52) are both fixedly connected with first fixing rings (56), one side wall of the first fixing ring (56) is fixedly connected with a detection membrane (57), one end of the detection membrane (57) is fixedly connected to the side wall of the other first fixing ring (56), the detection membrane (57) is a cylindrical structure, and is sleeved on the outside of the connecting pipe (2), and the detection membrane (57) is laid on the side wall of the heat insulation wall (54).

8. The waste heat utilization device for a coal-fired power plant according to claim 5, characterized in that: The auxiliary component (6) comprises two second fixing rings (61), wherein one of the second fixing rings (61) is fixedly connected to a side wall of the first mounting plate (51), and the other of the second fixing rings (61) is fixedly connected to a side wall of the second mounting plate (52), and a plurality of support blocks (64) are fixedly connected to the side wall of each second fixing ring (61) at equal angles.

9. The waste heat utilization device for a coal-fired power plant according to claim 8, characterized in that: Each of the two support blocks (64) located on the same horizontal plane is fixedly connected to a transverse plate (62), a plurality of connecting plates (63) are fixedly connected at equal intervals between two adjacent transverse plates (62), and a plurality of cone heads (65) are fixedly connected to the bottom wall of each transverse plate (62) and connecting plate (63).

10. A waste heat utilization device for a coal-fired power plant according to claim 9, characterized in that: A first circular hole (66) is formed at an equal angle at the top of each cone head (65), a second circular hole (67) is formed at the top of each transverse plate (62) and connecting plate (63), and each first circular hole (66) is connected to an adjacent second circular hole (67).

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