CN221147323U - Waste heat recovery device of power plant - Google Patents

Abstract

The utility model discloses a power plant waste heat recovery device, which comprises a supporting seat, wherein a heat exchange box and a filter box are fixedly arranged on the supporting seat, an air conveying pipe is fixedly communicated between the heat exchange box and the filter box, an air inlet pipe is fixedly communicated with the heat exchange box, a first filter screen is fixedly arranged in the air inlet pipe, an ash cleaning part is arranged on the air inlet pipe, a heat exchange pipe is fixedly arranged in the heat exchange box, a water inlet pipe and a water outlet pipe are fixedly communicated with the heat exchange box, and the water inlet pipe and the water outlet pipe are both communicated with the heat exchange pipe. The advantages are that: the impurity that can realize the adhesion of heat exchange tube surface carries out abundant clearance to can effectively ensure the heat absorption performance of heat exchange tube, guarantee the heating effect of flue gas to water, simultaneously through the cooperation of filter screen one with water spray mechanism, filtration three, can realize the multiple filtration to the flue gas, thereby can effectively improve the fresh degree of follow-up exhaust gas.

Description

Waste heat recovery device of power plant

Technical Field

The utility model relates to the technical field of waste heat recovery, in particular to a waste heat recovery device of a power plant.

Background

In the process of converting various primary energy sources into electric energy, a large amount of high-temperature smoke is generated in a power plant, and the high-temperature smoke is usually recycled by a waste heat recovery device in order to improve the utilization rate of resources, wherein most of the collected high-temperature smoke is used for heating water;

But the high temperature flue gas that current waste heat recovery device collected, through the in-process of heat exchange tube to water heating, dust and impurity in the flue gas can adsorb on the heat exchange tube, can reduce the heat absorption performance of heat exchange tube for a long time, has reduced the heating effect to water, consequently need to design power plant waste heat recovery device to solve above-mentioned problem.

Disclosure of utility model

The utility model aims to solve the problems that dust and impurities in the flue gas can be adsorbed on a heat exchange tube in the process of heating water by the heat exchange tube in the high-temperature flue gas in the prior art, the heat absorption performance of the heat exchange tube can be gradually reduced, and the heating effect on water is reduced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a power plant waste heat recovery device, includes the supporting seat, fixed mounting has heat exchange box, rose box on the supporting seat, fixed intercommunication has the air-carrying pipe between heat exchange box and the rose box, fixed intercommunication has the air-supply line on the heat exchange box, fixed mounting has filter screen one in the air-supply line, install the ash removal part on the air-supply line, fixed mounting has the heat exchange tube in the heat exchange box, fixed intercommunication has inlet tube, outlet pipe on the heat exchange box, and inlet tube and outlet pipe all are linked together with the heat exchange tube, install two cleaning brush one through elevating system in the heat exchange box, and two cleaning brush one all cooperatees with the heat exchange tube, two equal fixed mounting has branch on the cleaning brush one, two equal fixed mounting has the cleaning brush two that cooperatees with the heat exchange tube on the branch, cleaning brush one carries on the slider, install drive unit between slider and the heat exchange box, install the cleaning brush part between heat exchange box and the heat exchange tube, fixed mounting has two in the rose box, install on the rose box mechanism, fixed mounting has the filter screen three fixed exhaust pipe on the rose box.

In the power plant waste heat recovery device, the ash removal component comprises a rotating rod rotatably installed on the first filter screen, a fan is fixedly installed on the rotating rod, a scraping plate is fixedly installed on the rotating rod, a collecting box is fixedly installed on the air inlet pipe, the collecting box is an upper end opening, and a discharge opening is formed in the air inlet pipe.

In the power plant waste heat recovery device, the lifting mechanism comprises a servo motor fixedly mounted on the heat exchange box, a reciprocating screw rod is fixedly mounted at the driving end of the servo motor, a sliding piece is mounted on the reciprocating screw rod through a ball nut, and two cleaning brushes are fixedly mounted on the sliding piece.

In the above-mentioned power plant waste heat recovery device, the drive unit is including rotating two round bars of installing in the heat exchange box, two equal fixed mounting has the rotation gear on the round bar, two equal fixed mounting has magnet one on the round bar, fixed mounting has two racks on the slider, and two rotation gears all mesh with the rack that corresponds.

In the power plant waste heat recovery device, the cleaning part is provided with the limiting groove in the heat exchange box, two sliding grooves, two reset springs I are fixedly arranged on the sliding grooves, two reset springs I are fixedly provided with limiting rods, two limiting rods are slidably arranged on the corresponding sliding grooves, two reset springs II are fixedly arranged on the limiting rods, a supporting rod is fixedly arranged on the reset springs II, the supporting rod is slidably arranged on the limiting groove, a magnetic brush II matched with the heat exchange tube is fixedly arranged on the supporting rod, a connecting rod is fixedly arranged on the reciprocating screw, and a magnet II is fixedly arranged on the connecting rod.

In the above-mentioned power plant waste heat recovery device, water spraying mechanism includes fixed mounting fixed plate on the rose box, fixed mounting has the water pump on the fixed plate, the water inlet end fixed intercommunication of water pump has the water pipe that absorbs water, and the one end of water pipe that absorbs water seals runs through and installs on the rose box, the water outlet end fixed intercommunication of water pump has the water supply pipe, and the one end of water supply pipe seals and runs through and install on the rose box, fixed intercommunication has a plurality of shower nozzles on the water supply pipe.

Compared with the prior art, the utility model has the advantages that:

1. the lifting mechanism can enable the first cleaning brush and the second cleaning brush to reciprocate up and down to clean impurities and dust adhered to the heat exchange tube, so that the heat absorption performance of the heat exchange tube can be effectively ensured, meanwhile, the bending part of the heat exchange tube can be cleaned by matching the first magnetic brush with the second magnetic brush through matching of the transmission part and the cleaning part, and the surface cleaning sufficiency of the heat exchange tube can be effectively improved.

2. The first filter screen can filter the floater in the high-temperature flue gas, and a plurality of spray heads can spray water through the water spraying mechanism simultaneously, so that impurities in the flue gas are adsorbed, the filtering effect on the flue gas can be effectively improved, the third filter screen can further filter the gas, and the freshness of the exhaust gas can be further improved.

In summary, the utility model can fully clean the impurities adhered to the surface of the heat exchange tube, thereby effectively ensuring the heat absorption performance of the heat exchange tube, ensuring the heating effect of the smoke on water, and simultaneously realizing the multiple filtration of the smoke by the cooperation of the first filter screen, the water spraying mechanism and the third filter screen, thereby effectively improving the freshness of the subsequent exhaust gas.

Drawings

The utility model is described in further detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic structural diagram of a power plant waste heat recovery device according to the present utility model;

FIG. 2 is a schematic cross-sectional view of the air intake duct of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the heat exchange tank and the filter tank of FIG. 1;

FIG. 4 is an enlarged schematic view of a portion of the internal components of the heat exchanger box of FIG. 3;

FIG. 5 is an enlarged schematic view of a portion of the internal components of the heat exchanger box of FIG. 3;

fig. 6 is an enlarged schematic view of the filter box of fig. 1.

In the figure: the device comprises a supporting seat 1, a heat exchange box 2, a filter box 3, an air inlet pipe 4, a filter screen 5, a fan 6, a scraping plate 7, a collecting box 8, a servo motor 9, a reciprocating screw rod 10, a sliding piece 11, a cleaning brush 12, a cleaning brush 13, a rack 14, a round rod 15, a magnet 16, a magnetic brush 17, a limit rod 18, a reset spring 19, a heat exchange pipe 20, a magnet 21, a magnetic brush 22, an air conveying pipe 23, a filter screen 24, a water pump 25, a water conveying pipe 26 and a spray nozzle 27.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, the waste heat recovery device of the power plant comprises a supporting seat 1, wherein a heat exchange box 2 and a filter box 3 are fixedly installed on the supporting seat 1, an air conveying pipe 23 is fixedly communicated between the heat exchange box 2 and the filter box 3, an air inlet pipe 4 is fixedly communicated with the heat exchange box 2, a first filter screen 5 is fixedly installed in the air inlet pipe 4, and an ash removing component is installed on the air inlet pipe 4;

the above noted two points are:

1. The ash removal part is including rotating the bull stick of installing on filter screen one 5, fixed mounting has fan 6 on the bull stick, fixed mounting has scraper blade 7 on the bull stick, fixed mounting has collecting box 8 on the air-supply line 4, and collecting box 8 is the upper end opening, the bin outlet has been seted up on the air-supply line 4, can strike off the impurity that filter screen one 5 filters out through the ash removal part (one side of scraper blade 7 is laminated with filter screen one 5 surfaces mutually), thereby can effectively improve the filtration rate of filter screen one 5 to high temperature flue gas, and the impurity of striking off can fall into collecting box 8 under self gravity effect, the concentrated collection clearance of follow-up staff of being convenient for.

2. The collecting box 8 is rotatably provided with a door body (not marked in the drawing), the door body is fixedly provided with a handle (not marked in the drawing), and the collecting box is convenient for workers to collect and clean impurities collected in the collecting box 8 in a concentrated manner through the rotatable door body, so that the practicality and the sustainable usability of the whole device can be effectively improved.

Referring to fig. 1 and 3-the drawings, a heat exchange tube 20 is fixedly installed in a heat exchange box 2, a water inlet pipe and a water outlet pipe are fixedly communicated with the heat exchange box 2, the water inlet pipe and the water outlet pipe are both communicated with the heat exchange tube 20, two first cleaning brushes 12 are installed in the heat exchange box 2 through a lifting mechanism, the first cleaning brushes 12 are matched with the heat exchange tube 20, supporting rods are fixedly installed on the first cleaning brushes 12, a second cleaning brush 13 matched with the heat exchange tube 20 is fixedly installed on the second supporting rods, a transmission part is installed between a sliding part 11 and the heat exchange box 2, and a cleaning part is installed between the heat exchange box 2 and the heat exchange tube 20;

The following points are notable:

1. The lifting mechanism comprises a servo motor 9 fixedly mounted on the heat exchange box 2, a reciprocating screw rod 10 is fixedly mounted at the driving end of the servo motor 9, a sliding part 11 is mounted on the reciprocating screw rod 10 through a ball nut, the first cleaning brushes 12 are fixedly mounted on the sliding part 11, the first cleaning brushes 12 can move up and down through a lifting part (bristles on the first cleaning brushes 12 are attached to the surface of the heat exchange tube 20), and impurities adhered to the surface of the heat exchange tube 20 can be cleaned in the process of the first cleaning brushes 12 moving up and down, so that the heat absorption performance of the heat exchange tube 20 can be improved.

2. The transmission part comprises two round rods 15 rotatably arranged in the heat exchange box 2, rotary gears are fixedly arranged on the two round rods 15, a first magnet 16 is fixedly arranged on the two round rods 15, two racks 14 are fixedly arranged on the sliding piece 11, and the two rotary gears are meshed with the corresponding racks 14;

When the lifting mechanism drives the sliding part 11 to reciprocate up and down, the two round rods 15 can rotate through the cooperation of the sliding part 11 and the transmission part, and the two round rods 15 can clean impurities adhered to the bending part of the heat exchange tube 20 through the cooperation of the corresponding magnet 16 and the two return springs 19 in the rotation process (the bristles on the two magnetic brushes 17 are all attached to the surface of the heat exchange tube 20) through the left and right reciprocating movement of the two magnetic brushes 17.

3. The cleaning component is provided with a limiting groove in the heat exchange box 2, two sliding grooves, a first reset spring 19 is fixedly arranged on each sliding groove, limiting rods 18 are fixedly arranged on each first reset spring 19, each limiting rod 18 is slidably arranged on the corresponding sliding groove, a first magnetic brush 17 matched with the heat exchange tube 20 is fixedly arranged on each limiting rod 18, a second reset spring is fixedly arranged on each limiting groove, a supporting rod is fixedly arranged on each second reset spring, the supporting rods are slidably arranged on the limiting grooves, a second magnetic brush 22 matched with the heat exchange tube 20 is fixedly arranged on each supporting rod, a connecting rod is fixedly arranged on the reciprocating screw rod 10, and a second magnet 21 is fixedly arranged on each connecting rod;

The cleaning component can clean impurities adhered to the bending part of the heat exchange tube 20 by the first magnetic brush 17, and meanwhile, the second magnetic brush 22 can clean impurities adhered to the bending part of the heat exchange tube 20, so that the sufficiency of cleaning the surface of the heat exchange tube 20 can be effectively improved, and the overall heat absorption performance of the heat exchange tube 20 is further improved.

4. The end face shapes of the limiting grooves and the two sliding grooves are arranged to be in a step shape, the end face shape of the two limiting rods 18 close to the corresponding sliding grooves is also in a step shape, the end face shape of the supporting rod close to the limiting grooves is also in a step shape, and the purpose is to improve the sliding stability of the two limiting rods 18 in the corresponding sliding grooves and the sliding stability of the supporting rod in the limiting grooves.

5. The liquid storage tank (not shown in the figure) is fixedly arranged on the supporting seat 1, the pipe body (not shown in the figure) is fixedly communicated with the liquid storage tank, the water outlet pipe is communicated with the pipe body, the valve (not shown in the figure) is arranged on the water outlet pipe, and after the water heating inside the heat exchange pipe 20 is finished, the hot water inside the heat exchange pipe 20 can be input into the liquid storage tank for storage by opening the valve on the water outlet pipe.

6. The cover plate (not shown in the figure) is rotatably arranged on the heat exchange box 2, the lifting handle (not shown in the figure) is fixedly arranged on the cover plate, and the cleaning brush I12, the cleaning brush II 13, the magnetic brush I17 and the magnetic brush II 22 are conveniently collected and cleaned by staff through the door body which is rotatably opened on the heat exchange box 2, so that the cleanliness of the interior of the heat exchange box 2 can be ensured.

Referring to fig. 1 and 6, a second filter screen 24 is fixedly arranged in the filter box 3, a water spraying mechanism is arranged on the filter box 3, an exhaust pipe is fixedly communicated with the filter box 3, and a third filter screen is fixedly arranged on the exhaust pipe;

The following points are notable:

1. The water spraying mechanism comprises a fixed plate fixedly mounted on the filter box 3, a water pump 25 is fixedly mounted on the fixed plate, the water inlet end of the water pump 25 is fixedly communicated with a water suction pipe, one end of the water suction pipe is sealed and penetratingly mounted on the filter box 3, the water outlet end of the water pump 25 is fixedly communicated with a water delivery pipe 26, one end of the water delivery pipe 26 is sealed and penetratingly mounted on the filter box 3, a plurality of spray heads 27 are fixedly communicated on the water delivery pipe 26, and impurities in smoke entering the filter box 3 can be adsorbed conveniently through the water spraying mechanism, so that further filtration of the smoke can be realized.

2. The fixing plate is specifically fixedly connected with the casing of the water pump 25, and the internal components and the working principle inside the water pump 25 are all of the prior art, and are not described herein too much.

3. The purpose of installing the second filter screen 24 inside the filter box 3 is that when a plurality of spray heads 27 spray water to adsorb impurities in the flue gas, the water falls into the bottom of the filter box 3 again under the action of self gravity, and the second filter screen 24 filters the water at the moment, so that the water circulation can be effectively facilitated, and the recycling rate of water resources is effectively improved.

Further, the above-described fixed connection is to be understood in a broad sense, unless explicitly stated and defined otherwise, as being, for example, welded, glued, or integrally formed, as is well known to those skilled in the art.

When the device is needed to be used, high-temperature flue gas is firstly input into the heat exchange box 2 through the air inlet pipe 4, water is firstly conveyed into the heat exchange pipe 20 through the water inlet pipe (the water in the heat exchange pipe 20 is discharged through the water outlet pipe after heating is finished), the first filter screen 5 filters floating matters in high temperature before the high-temperature flue gas enters the heat exchange box 2, meanwhile, when the flue gas flows in the air inlet pipe 4, the fan 6 rotates, the scraper 7 is driven to rotate by the rotating rod in the rotating process of the fan 6, and impurities filtered out on the first filter screen 5 are scraped in the rotating process of the scraper 7, so that the filtering speed of the first filter screen 5 on the high-temperature flue gas can be effectively improved;

Meanwhile, when flue gas is input into the heat exchange box 2, the servo motor 9 is started, the servo motor 9 drives the sliding part 11 to reciprocate up and down through the cooperation of the reciprocating screw rod 10 and the ball nut, in the process of reciprocating up and down of the sliding part 11, the two first cleaning brushes 12, the two supporting rods and the two second cleaning brushes 13 are driven to reciprocate up and down together, and impurities adhered to the heat exchange tube 20 can be cleaned in the process of reciprocating up and down of the two first cleaning brushes 12 and the two second cleaning brushes 13, so that the heat absorption performance of the heat exchange tube 20 can be effectively improved;

Meanwhile, in the process of up-and-down reciprocating movement of the sliding piece 11, the two racks 14 on the sliding piece are meshed with the corresponding rotating gears intermittently, so that the two round rods 15 drive the corresponding magnet I16 to rotate intermittently to be opposite to the corresponding magnetic brush I17, the two magnet I16 can reciprocate left and right through the cooperation of the corresponding reset spring I19 (the magnetic poles of the two magnet I16 and the corresponding magnetic brush I17 are opposite), the left and right reciprocating movement of the two magnetic brushes I17 can clean impurities adhered to the bent parts (the direction shown in fig. 4) on the heat exchange tube 20, meanwhile, in the rotating process of the reciprocating screw rod 10, the magnet II 21 is driven to rotate continuously through the connecting rods, and in the rotating process of the magnet II 21, the supporting rods drive the magnetic brush II 22 to reciprocate left and right through the cooperation of the reset spring II, so that impurities and dust adhered to the bent parts under the heat exchange tube 20 are cleaned, and the surface cleaning sufficiency of the whole heat exchange tube 20 can be effectively improved;

when the inside high temperature flue gas of heat transfer case 2 goes on to rose box 3 through defeated tuber pipe 23, start water pump 25 (rose box 3 inside is stored with water), the work of water pump 25 can be through the water pipe with the inside water of rose box 3, input to the water pipe 26, and adsorb the impurity in the flue gas (form gas this moment) by a plurality of shower nozzles 27 blowout, thereby realized the further filtration to the flue gas, simultaneously when the gas is discharged through the exhaust pipe, the filter screen on the exhaust pipe three can carry out further filtration to the gas, thereby can effectively improve the fresh degree of exhaust gas.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (6)

1. The utility model provides a power plant waste heat recovery device, includes supporting seat (1), its characterized in that, fixed mounting has heat exchange box (2), rose box (3) on supporting seat (1), fixed intercommunication has air duct (23) between heat exchange box (2) and rose box (3), fixed intercommunication has air-supply line (4) on heat exchange box (2), fixed mounting has filter screen one (5) in air-supply line (4), install the deashing part on air-supply line (4), fixed mounting has heat exchange tube (20) in heat exchange box (2), fixed intercommunication has inlet tube, outlet pipe on heat exchange box (2), and inlet tube and outlet pipe all are linked together with heat exchange tube (20), install two cleaning brush one (12) through elevating system in heat exchange box (2), and two cleaning brush one (12) are cooperateed with heat exchange tube (20), two all fixed mounting have on the branch with heat exchange tube (20) cleaning brush two (13), cleaning brush one (12) are installed on the slider (11) and are carried between heat exchange tube (20) and heat exchange tube (2), the filter box is characterized in that a second filter screen (24) is fixedly installed in the filter box (3), a water spraying mechanism is installed on the filter box (3), an exhaust pipe is fixedly communicated with the filter box (3), and a third filter screen is fixedly installed on the exhaust pipe.

2. The power plant waste heat recovery device according to claim 1, wherein the ash removal component comprises a rotating rod rotatably mounted on a first filter screen (5), a fan (6) is fixedly mounted on the rotating rod, a scraping plate (7) is fixedly mounted on the rotating rod, a collecting box (8) is fixedly mounted on the air inlet pipe (4), the collecting box (8) is an upper end opening, and a discharge opening is formed in the air inlet pipe (4).

3. The power plant waste heat recovery device according to claim 1, wherein the lifting mechanism comprises a servo motor (9) fixedly mounted on the heat exchange box (2), a reciprocating screw rod (10) is fixedly mounted at the driving end of the servo motor (9), a sliding piece (11) is mounted on the reciprocating screw rod (10) through a ball nut, and two cleaning brushes (12) are fixedly mounted on the sliding piece (11).

4. The power plant waste heat recovery device according to claim 1, wherein the transmission part comprises two round bars (15) rotatably mounted in the heat exchange box (2), rotation gears are fixedly mounted on the two round bars (15), a magnet (16) is fixedly mounted on the two round bars (15), two racks (14) are fixedly mounted on the sliding part (11), and the two rotation gears are meshed with the corresponding racks (14).

5. The waste heat recovery device of a power plant according to claim 3, wherein the cleaning component is provided with a limit groove in the heat exchange box (2), two slide grooves, two return springs I (19) are fixedly installed on the slide grooves, two limit rods (18) are fixedly installed on the return springs I (19), the two limit rods (18) are slidably installed on the corresponding slide grooves, two magnetic brushes I (17) matched with the heat exchange tubes (20) are fixedly installed on the limit rods (18), a return spring II is fixedly installed on the limit groove, a support rod is fixedly installed on the return spring II, the support rod is slidably installed on the limit groove, a magnetic brush II (22) matched with the heat exchange tubes (20) is fixedly installed on the support rod, a connecting rod is fixedly installed on the reciprocating screw rod (10), and a magnet II (21) is fixedly installed on the connecting rod.

6. The power plant waste heat recovery device according to claim 1, wherein the water spraying mechanism comprises a fixed plate fixedly installed on the filter box (3), a water pump (25) is fixedly installed on the fixed plate, a water inlet end of the water pump (25) is fixedly communicated with a water suction pipe, one end of the water suction pipe is fixedly communicated with a water delivery pipe (26) in a penetrating manner, one end of the water delivery pipe (26) is fixedly communicated with the filter box (3), and a plurality of spray heads (27) are fixedly communicated with the water delivery pipe (26).