Natural gas power generation heat energy recycling device

Abstract

The utility model relates to the technical field of heat energy recovery, and discloses a natural gas power generation heat energy recycling device, which is characterized in that a heat conduction channel is arranged in a tank body, so that waste gas with higher temperature exchanges heat with a medium in the tank body when flowing through the heat conduction channel, and the effect of heating the medium in the tank body is further realized; when the waste gas enters the filter box, the waste gas is filtered through the filter plate arranged in the filter box, so that tiny particles and harmful substances in the waste gas are removed, the concentration of pollutants in the gas finally discharged to the external environment is remarkably reduced, and the harm to the environment and human bodies is effectively reduced; meanwhile, through the cleaning assembly, the cleaning part can be driven to clean the filter plate, and particulate matters attached to the filter plate can be effectively removed, so that the filter plate is kept clean, blockage is prevented, and long-time efficient operation of the filter plate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat energy recycling technical field especially relates to a natural gas power generation heat energy recycling device. BACKGROUND

[0002] The natural gas power generation heat energy recycling device usually refers to the equipment for improving energy utilization efficiency by recycling and utilizing the waste heat or residual heat generated in the power generation process during the natural gas power generation process;

[0003] In the gas turbine power generation process, the combustion of natural gas produces high-temperature waste gas, which can convert water into high-temperature high-pressure steam through a waste heat boiler. The Chinese utility model patent with publication number CN219829541U discloses a natural gas heating furnace with recyclable heat energy. The water is heated by high-temperature waste gas and then discharged externally after heating. However, there are certain defects in specific use. For example, although natural gas is a relatively clean fuel, the pollutants generated during its combustion process are relatively small, but it still emits some harmful substances, which are harmful to the environment and human health. If directly discharged into the external atmosphere, it will also cause certain environmental pollution. SUMMARY

[0004] The utility model aims at providing a natural gas power generation heat energy recycling device to solve the problem of environmental pollution caused by the lack of filtering and purification effect of flue gas in the natural gas heat energy recycling equipment in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides a natural gas power generation heat energy recycling device, which comprises:

[0006] The tank body has a cavity for containing the heated medium inside;

[0007] The heat-conducting channel is arranged in the wall of the tank body, and the heat-conducting channel has an air inlet end and an air outlet end;

[0008] The filter box has a first end connected with the air outlet end and a second end connected with the outside, and a filter plate is arranged between the first end and the second end;

[0009] The cleaning assembly is arranged between the filter plate and the first end, and the cleaning assembly has a cleaning part abutting against the surface of the filter plate; and

[0010] The driving assembly is connected with the cleaning assembly, and the driving assembly drives the cleaning assembly to reciprocally move the cleaning part relative to the filter plate.

[0011] In some embodiments of the present application, the cleaning part is movably connected to the cleaning assembly along a direction perpendicular to the surface of the filter plate, and the cleaning assembly is provided with an elastic member capable of elastically deforming along a direction perpendicular to the surface of the filter plate, and the elastic member elastically abuts against the surface of the filter plate.

[0012] In some embodiments of the present application, the natural gas power generation heat energy recycling device further comprises a vane arranged between the cleaning assembly and the first end, the vane is rotatably arranged in the filter box, and the vane is driven by the driving assembly.

[0013] In some embodiments of the present application, the cleaning assembly further comprises a guide rod fixed in the filter box, a reciprocating screw rotatably arranged in the filter box, and a bearing block, and the guide rod and the reciprocating screw are arranged in parallel.

[0014] The bearing block is slidably arranged on the guide rod, and the bearing block is threadedly arranged on the reciprocating screw, and the reciprocating screw is driven by the driving assembly to move the bearing block reciprocally in the filter box.

[0015] The cleaning part is movably connected to the bearing block along a direction perpendicular to the surface of the filter plate, and the elastic member is arranged on the bearing block.

[0016] In some embodiments of the present application, the cleaning part comprises a cleaning plate, and a slide rod is arranged through the bearing block and connected to a side of the cleaning plate away from the filter plate, and the slide rod is slidably arranged in the bearing block to move the cleaning plate along a direction perpendicular to the surface of the filter plate.

[0017] An end of the slide rod away from the cleaning plate at least partially extends out of the bearing block, the end of the slide rod extending out of the bearing block is connected to a limiting plate, the elastic member is sleeved on an outer periphery of the part of the slide rod extending out of the bearing block, one end of the elastic member is connected to the limiting plate, and the other end of the elastic member is connected to the bearing block.

[0018] In some embodiments of the present application, the driving assembly comprises a driving motor arranged outside the filter box, and the driving motor drives the reciprocating screw to rotate.

[0019] In some embodiments of the present application, the vane shaft is arranged along a moving direction of the cleaning part, a first pulley coaxially rotatable with the reciprocating screw and a second pulley coaxially rotatable with the vane shaft are respectively arranged outside the filter box, and a transmission belt for synchronously driving the second pulley to rotate is arranged between the first pulley and the second pulley.

[0020] In some embodiments of the present application, the second end is provided with a smoke exhaust pipe communicated with the filter box and the outside.

[0021] In some embodiments of the present application, the heat-conducting channel is arranged in the wall of the tank body; and the tank body is provided with an air inlet pipe in communication with the air inlet end.

[0022] In some embodiments of the present application, the tank body is provided with an inlet pipe and an outlet pipe for the heated medium to enter and exit the tank body.

[0023] Compared with the prior art, the natural gas power generation heat energy recycling device has the beneficial effects that: the heat-conducting channel is arranged in the tank body, so that the medium in the tank body is heated when the high-temperature waste gas flows through the heat-conducting channel; when the waste gas enters the filter box, the filter plate arranged in the filter box is used to filter the waste gas, so that the small particles and harmful substances in the waste gas are removed, the concentration of pollutants in the gas finally discharged to the external environment is significantly reduced, and the harm to the environment and human body is effectively reduced; at the same time, the cleaning assembly can also drive the cleaning part to clean the filter plate, so that the particles attached to the filter plate can be effectively removed, the cleanliness of the filter plate is maintained, the filter plate is prevented from being blocked, and the long-term efficient operation of the filter plate is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic view of the filter box and the tank body installation structure of the present application.

[0025] Figure 2 It is a schematic view of the internal structure of the tank body after being cut open.

[0026] Figure 3 It is a schematic view of the internal structure of the filter box.

[0027] Figure 4 It is a schematic view of the cleaning assembly structure of the present application.

[0028] Figure 5 It is a schematic view of the connection relationship of the cleaning plate, the bearing block and the slide rod.

[0029] In the figure, 1, tank body; 11, cavity; 12, heat-conducting channel; 13, air inlet pipe; 14, inlet pipe; 15, outlet pipe;

[0030] 2, filter box; 21, first end; 22, second end; 23, smoke exhaust pipe;

[0031] 3, filter plate; 4, cleaning assembly; 41, cleaning part; 411, slide rod; 412, limiting plate; 42, guide rod; 43, reciprocating screw; 44, bearing block;

[0032] 5, elastic member; 6, first pulley;

[0033] 7, blade; 71, second pulley; 72, transmission belt. DETAILED DESCRIPTION

[0034] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application. It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the "first" information can also be referred to as "second" information, and similarly, the "second" information can also be referred to as "first" information.

[0036] As Figures 1-5 As shown in the present application, a natural gas power generation heat energy recycling device is provided, which comprises a tank body 1, a cavity 11 for containing heated medium is arranged in the tank body 1; a heat conduction channel 12 is arranged in the wall of the tank body 1, the heat conduction channel 12 has an air inlet end and an air outlet end, the waste gas with higher temperature enters into the heat conduction channel 12 through the air inlet end, and heat exchange is generated with the medium in the cavity 11 (to realize the recycling of waste gas heat energy), and finally the waste gas is discharged through the air outlet end; a filter box 2 has a first end 21 communicated with the air outlet end and a second end 22 communicated with the outside, a filter plate 3 is arranged between the first end 21 and the second end 22 (the filter plate 3 can be a composite fiber filter material, activated carbon fiber filter cotton and various filter materials, and the corresponding filter material is selected according to the type of pollutant particles in the waste gas); a cleaning assembly 4 is arranged between the filter plate 3 and the first end 21, the cleaning assembly 4 has a cleaning part 41 abutting against the surface of the filter plate 3; and a driving assembly is connected with the cleaning assembly 4, the driving assembly drives the cleaning assembly 4 to drive the cleaning part 41 to reciprocate relative to the filter plate 3.

[0037] In the specific work of the embodiment, the exhaust gas generated by the natural gas combustion enters the heat conduction channel 12 through the gas inlet end, and realizes heat transfer to the heated medium (such as water, which can be used for other needs after being heated) during the flow in the heat conduction channel 12, so as to realize the recycling of the heat energy of the exhaust gas; when the exhaust gas is discharged from the gas outlet end and enters the filter box 2 through the first end 21, the exhaust gas will pass through the filter plate 3 for filtering, so as to filter the particulate pollutants or other harmful substances mixed in the exhaust gas, and the filtered gas is finally discharged to the outside through the second end 22, which can significantly reduce the content of the small particulate pollutants and other harmful substances in the exhaust gas discharged to the outside environment; at the same time, the cleaning assembly 4 is driven by the driving assembly, so as to drive the cleaning part 41 to clean the surface of the filter plate 3, and the cleaning part 41 reciprocates relative to the surface of the filter plate 3, so as to remove the particulate matters attached to the surface of the filter plate 3, keep the filter plate 3 clean, prevent clogging, and ensure the long-term efficient operation of the filter plate 3.

[0038] As shown in Figure 3 , Figure 4 In the embodiment, the cleaning part 41 can be connected to the cleaning assembly 4 in a direction perpendicular to the surface of the filter plate 3, and the cleaning assembly 4 is provided with an elastic member 5 which can elastically deform in a direction perpendicular to the surface of the filter plate 3, and the elastic member 5 elastically abuts against the surface of the filter plate 3. If there are some stubborn impurities attached to the surface of the filter plate 3, when the cleaning part 41 moves to the position of the stubborn impurities, the cleaning part 41 will be hindered and move away from the filter plate 3, so that the cleaning part 41 can pass over the stubborn impurities, and after the cleaning part 41 passes over the stubborn impurities, the cleaning part 41 abuts against the surface of the filter plate 3 again under the action of the elastic member 5, so that the surface of the filter plate 3 can be cleaned, and at the same time, damage to the filter plate 3 or the cleaning part 41 caused by the stubborn impurities attached to the surface of the filter plate 3 can be avoided.

[0039] As shown in Figure 3 , the natural gas power generation heat energy recycling device further comprises a blade 7 arranged between the cleaning assembly 4 and the first end 21, the blade 7 is rotatably installed in the filter box 2, and the blade 7 is driven by the driving assembly; when the driving assembly drives the cleaning part 41 to clean the surface of the filter plate 3, the blade 7 is also driven to rotate in the filter box 2, so that the high-temperature exhaust gas can form a vortex or other forms of motion after entering the filter box 2, the contact time of the exhaust gas and the filter plate 3 is increased, which is helpful for more thoroughly removing the harmful substances, and at the same time, the driving assembly is driven without the need for an additional driving source, thereby reducing the cost during use.

[0040] As shown in Figure 4As shown, the cleaning assembly 4 further comprises a guide rod 42 fixed in the filter box 2, a reciprocating screw rod 43 rotatably installed in the filter box 2, and a bearing block 44, wherein the guide rod 42 and the reciprocating screw rod 43 are arranged in parallel; the bearing block 44 is slidably assembled with the guide rod 42 and threadedly assembled with the reciprocating screw rod 43; the reciprocating screw rod 43 is driven by the driving assembly to drive the bearing block 44 to reciprocate in the filter box 2; the cleaning part 41 is movably connected to the bearing block 44 in a direction perpendicular to the surface of the filter plate 3; and the elastic member 5 is arranged on the bearing block 44; in a specific working process, the driving assembly drives the reciprocating screw rod 43 to rotate and then drives the bearing block 44 to reciprocate in the filter box 2 (the guide rod 42 serves to guide and limit the bearing block 44); the cleaning part 41 is movably connected to the bearing block 44 in a direction perpendicular to the surface of the filter plate 3; and the elastic member 5 is arranged on the bearing block 44; when the cleaning part 41 moves to a position of the impurities that are difficult to be removed, the cleaning part 41 is hindered by the impurities and moves away from the surface of the filter plate 3, so that the cleaning part 41 passes over the impurities (in this process, the elastic member 5 is elastically deformed); after the cleaning part 41 passes over the impurities that are difficult to be removed, the cleaning part 41 is forced to abut against the surface of the filter plate 3 again under the action of the elastic member 5, so as to continue to clean the surface of the filter plate 3.

[0041] In some embodiments of the present application, the cleaning part 41 comprises a cleaning plate (in the process of moving along the surface of the filter plate 3, the cleaning plate scrapes off the contaminant particles and other harmful substances attached to the surface of the filter plate 3), such as Figure 5 As shown, a slide rod 411 passing through the bearing block 44 is connected to the side of the cleaning plate away from the filter plate 3, and the slide rod 411 is slidably assembled with the bearing block 44 (the slide rod 411 can only move in a direction perpendicular to the surface of the filter plate 3), so as to move the cleaning plate in a direction perpendicular to the surface of the filter plate 3; the end of the slide rod 411 away from the cleaning plate at least partially protrudes out of the bearing block 44, and a limiting plate 412 is connected to the end of the slide rod 411 protruding out of the bearing block 44; the elastic member 5 is sleeved on the outer periphery of the part of the slide rod 411 protruding out of the bearing block 44, one end of the elastic member 5 is connected to the limiting plate 412, the other end of the elastic member 5 (which is a spring) is connected to the bearing block 44, the elastic member 5 applies an action force to the slide rod 411 in a direction towards the filter plate 3, so that the cleaning plate abuts against the surface of the filter plate 3; when the cleaning plate moves to a position of stubborn impurities that are difficult to be scraped off, the cleaning plate is hindered and moves away from the filter plate 3, so as to stretch the elastic member 5 in a direction away from the filter plate 3 under the cooperation of the slide rod 411 and the limiting plate 412, so as to pass over the impurities, and then the cleaning plate abuts against the surface of the filter plate 3 again under the action of the elastic member 5.

[0042] In some embodiments of the present application, the driving assembly comprises a driving motor (not shown in the figure, which can be fixed on the top wall of the tank body 1) arranged outside the filter box 2, and the output shaft of the driving motor is connected with the reciprocating lead screw 43 through a flange plate to drive the reciprocating lead screw 43 to rotate. With the rotation of the reciprocating lead screw 43 (the reciprocating lead screw 43 is a kind of lead screw that can realize the reciprocating motion of the sliding block without changing the rotation direction of the main shaft), the bearing block 44 (the cleaning part 41) is driven to move reciprocally in the filter box 2, and the surface of the filter plate 3 is cleaned.

[0043] In some embodiments of the present application, as shown in Figure 3 , the blade 7 shaft is arranged along the moving direction of the cleaning part 41, and the first pulley 6 coaxially rotating with the reciprocating lead screw 43 and the second pulley 71 coaxially rotating with the blade 7 shaft are arranged outside the filter box 2. The transmission belt 72 is matched between the first pulley 6 and the second pulley 71. When the driving assembly drives the reciprocating lead screw 43 to rotate, the blade 7 is simultaneously driven to rotate in the filter box 2 through the matching between the first pulley 6, the transmission belt 72 and the second pulley 71.

[0044] In some embodiments of the present application, as shown in Figure 3 , the second end 22 of the filter box 2 is provided with a smoke exhaust pipe 23 communicating with the outside and the filter box 2, and the filtered gas is discharged to the outside atmosphere through the smoke exhaust pipe 23.

[0045] In some embodiments of the present application, as shown in Figure 2 , the heat conduction channel 12 is spirally arranged in the wall of the tank body 1 to increase the contact area of the waste gas and the medium in the tank body 1 and improve the efficiency of heat conduction. When the high-temperature waste gas moves in the spiral heat conduction channel 12, the direction changes constantly, forming local turbulence, further improving the heat conduction efficiency, so that the high-temperature waste gas generated by burning natural gas can be more effectively converted into usable heat energy, and the utilization rate of the overall heat energy of the device is improved. Figure 1 , Figure 2 As shown in , the gas inlet pipe 13 communicating with the gas inlet end is arranged on the tank body 1, and the high-temperature waste gas generated by burning natural gas enters the heat conduction channel 12 through the gas inlet pipe 13 and the gas inlet end in sequence.

[0046] Figure 1 , Figure 2 As shown in , the tank body 1 is provided with the discharge pipe 14 and the discharge pipe 15 for the heated medium to enter and exit the tank body 1. While the high-temperature waste gas flows through the heat conduction channel 12 and heats the medium in the tank body 1, the heated medium in the tank body 1 is discharged through the discharge pipe 15, and the medium to be heated is discharged through the discharge pipe 14, so as to realize the uninterrupted heating of the medium.

[0047] The working process of the utility model is: the high-temperature waste gas generated by natural gas enters into the flow guide channel through the air inlet pipe 13 and the air inlet end and moves in the flow guide channel to realize heat exchange with the medium in the tank body 1 and recycle the heat energy carried by the high-temperature waste gas; the high-temperature waste gas finally enters into the filter box 2 through the discharge end and is discharged to the outside atmosphere through the smoke exhaust pipe 23 after being filtered by the filter plate 3; in the above process, the driving assembly drives the cleaning part 41 to clean the surface of the filter plate 3 to prevent the particulate pollutants mixed in the waste gas from blocking the filter plate 3; meanwhile, the driving assembly drives the blade 7 to rotate to make the waste gas entering into the filter box 2 form vortex, increase the contact time of the waste gas and the filter plate 3 and further more effectively capture and remove the particulate pollutants and other harmful substances in the waste gas.

[0048] In conclusion, the utility model embodiment provides a natural gas power generation heat energy recycling device, the application is provided with the heat conduction channel 12 in the tank body 1, when the waste gas with higher temperature flows through the heat conduction channel 12, the medium in the tank body 1 is heated, when the waste gas enters into the filter box 2, the filter plate 3 arranged in the filter box 2 is used to filter the waste gas to remove the tiny particles and harmful substances in the waste gas, so that the pollutant concentration in the gas discharged to the outside environment is significantly reduced, the harm to the environment and human body is effectively reduced; meanwhile, the cleaning assembly 4 can also drive the cleaning part 41 to clean the filter plate 3, the particulate matters attached to the filter plate 3 can be effectively removed to keep the filter plate 3 clean, prevent blockage and ensure the long-term efficient operation of the filter plate 3.

[0049] The above only is the preferred implementation manner of the utility model, and it should be pointed out that for ordinary skilled person in the technical field, several improvements and replacements can be made without departing from the technical principle of the utility model, and these improvements and replacements should also be regarded as the protection range of the utility model.

Claims

1. A natural gas power generation heat recovery and utilization device, characterized in that, include: The tank (1) has a cavity (11) for holding the heated medium. A heat conduction channel (12) is provided inside the wall of the tank (1), and the heat conduction channel (12) has an air inlet end and an air outlet end; The filter box (2) has a first end (21) connected to the exhaust end and a second end (22) connected to the outside. A filter plate (3) is provided between the first end (21) and the second end (22). A cleaning assembly (4) is disposed between the filter plate (3) and the first end (21), the cleaning assembly (4) having a cleaning part (41) that presses against the surface of the filter plate (3); and A drive component is connected to the cleaning component (4), and the drive component drives the cleaning component (4) to move the cleaning part (41) back and forth relative to the filter plate (3).

2. The natural gas power generation heat recovery and utilization device according to claim 1, characterized in that, The cleaning part (41) is movable and connected to the cleaning assembly (4) in a direction perpendicular to the surface of the filter plate (3). The cleaning assembly (4) is provided with an elastic element (5) that can elastically deform in a direction perpendicular to the surface of the filter plate (3). The elastic element (5) causes the cleaning part (41) to elastically press against the surface of the filter plate (3).

3. The natural gas power generation heat recovery and utilization device according to claim 2, characterized in that, The natural gas power generation heat energy recovery and utilization device also includes blades (7) disposed between the cleaning component (4) and the first end (21). The blades (7) are rotatably installed in the filter box (2) and are driven by the drive component.

4. The natural gas power generation heat recovery and utilization device according to claim 3, characterized in that, The cleaning assembly (4) also includes a guide rod (42) fixed inside the filter box (2), a reciprocating screw (43) rotatably installed inside the filter box (2), and a bearing block (44). The guide rod (42) and the reciprocating screw (43) are arranged in parallel. The support block (44) is slidably assembled with the guide rod (42), and the support block (44) is threadedly assembled with the reciprocating screw (43). The reciprocating screw (43) is driven by the drive assembly to make the support block (44) reciprocate within the filter box (2). The cleaning part (41) is movable and connected to the support block (44) in a direction perpendicular to the surface of the filter plate (3), and the elastic element (5) is provided on the support block (44).

5. The natural gas power generation heat recovery and utilization device according to claim 4, characterized in that, The cleaning section (41) includes a cleaning plate, and a slide rod (411) is connected to the side of the cleaning plate away from the filter plate (3) and passes through the support block (44). The slide rod (411) is slidably mounted on the support block (44) so ​​that the cleaning plate can move in a direction perpendicular to the surface of the filter plate (3). The slide rod (411) extends at least partially from the end away from the cleaning plate from the support block (44). The end of the slide rod (411) extending from the support block (44) is connected to a limiting plate (412). The elastic element (5) is fitted around the outer periphery of the portion of the slide rod (411) extending from the support block (44). One end of the elastic element (5) is connected to the limiting plate (412), and the other end of the elastic element (5) is connected to the support block (44).

6. The natural gas power generation heat recovery and utilization device according to claim 4, characterized in that, The drive assembly includes a drive motor located outside the filter box (2), which drives the reciprocating screw (43) to rotate.

7. The natural gas power generation heat recovery and utilization device according to claim 6, characterized in that, The blade (7) shaft is arranged along the moving direction of the cleaning part (41). The filter box (2) is provided with a first pulley (6) that rotates coaxially with the reciprocating screw (43) and a second pulley (71) that rotates coaxially with the blade (7) shaft. A transmission belt (72) for driving the second pulley (71) to rotate synchronously is assembled between the first pulley (6) and the second pulley (71).

8. The natural gas power generation heat recovery and utilization device according to claim 1, characterized in that, The second end (22) is provided with a smoke exhaust pipe (23) that connects to the outside and the filter box (2).

9. The natural gas power generation heat recovery and utilization device according to claim 1, characterized in that, The heat conduction channel (12) is spirally arranged inside the wall of the tank (1); the tank (1) is provided with an air inlet pipe (13) that communicates with the air inlet end.

10. The natural gas power generation heat recovery and utilization device according to claim 1, characterized in that, The tank (1) has an inlet pipe (14) and an outlet pipe (15) for the heated medium to enter and exit the tank (1).

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