CN111397388A - Condensing device and method of biomass power generation waste heat recovery system - Google Patents

Abstract

The invention discloses a condensing device and a condensing method of a biomass power generation waste heat recovery system, which comprise a box body and a base arranged below the box body, wherein the base and the box body are fixedly connected through supporting legs; an impurity removing piece for removing impurities from the steam is arranged in the air inlet cylinder; the heat exchange device is designed aiming at the defects of the existing device, so that the heat exchange tube can realize self rotation by utilizing airflow power while exchanging heat, thus impurities in the heat exchange tube can be better removed during cleaning, meanwhile, the heat exchange tube in the rotating state can ensure the uniformity of heat exchange, reduce the impact of airflow on a tube body, avoid the stress generated by nonuniform heating in the heat exchange tube and ensure the service life of the heat exchange tube.

Description

Condensing device and method of biomass power generation waste heat recovery system

Technical Field

The invention relates to the technical field of biomass power generation equipment, in particular to a condensing device and a condensing method of a biomass power generation waste heat recovery system.

Background

In a biomass power generation waste heat recovery system, a condenser is very commonly used, a cooling pipe is arranged in the condenser, steam discharged into the condenser is subjected to heat exchange through cooling water circulating in the cooling pipe to form condensed water, then the condensed water can be recovered and continuously used in the system, but the cooling pipe in the existing condenser needs to pass through water, when the condenser works in different environments, impurities can adhere to the cooling pipe, so that water flow is not easy to pass through, when corrosive water passes through the cooling pipe, the cooling pipe is easy to damage and inconvenient to clean, and when the steam in biomass power generation waste heat passes through the condenser, some impurities can be mixed in gas, after the machine works for a long time, the impurities can be accumulated in the machine, so that the internal fault of the machine occurs, the working efficiency of the condenser is seriously influenced, and the service life of the condenser is prolonged, and aiming at the problems, the patent of current patent publication No. CN210004792U has announced a waste heat recovery system's condenser, and the device washes through increasing the washing liquid in aqueous, utilizes to filter steam simultaneously and washes to guarantee that heat transfer part keeps high-efficient lasting radiating effect.

However, the cleaning effect of the cleaning agent adding washing mode is not good for the fixed pipelines, and in addition, the filtering mode for steam is easy to cause the blockage of the filter screen, which is not beneficial to ensuring the purification durability.

Disclosure of Invention

The invention aims to provide a condensing device and a condensing method of a biomass power generation waste heat recovery system, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a condensing device of a biomass power generation waste heat recovery system comprises a box body and a base arranged below the box body, wherein the base and the box body are fixedly connected through supporting legs, an air supply pipe used for providing steam is arranged above the box body, the end part of the air supply pipe is communicated with an air inlet port at the upper end of the box body through an air inlet cylinder, and an air outlet port is arranged at the lower side of the box body;

an impurity removing piece for removing impurities from the steam is arranged in the air inlet cylinder;

a heat exchange piece for exchanging heat with high-temperature steam is arranged in the box body;

the impurity removing part comprises a conical filter cover which is rotatably arranged in the air inlet cylinder, a piston ring which is in sliding fit with the inner wall of the air inlet cylinder is arranged on the outer side of the lower end of the conical filter cover, a fixing sleeve penetrates through the middle position of the conical filter cover, a piston rod which can slide up and down along an inner hole of the fixing sleeve is arranged in the fixing sleeve, a rotation limiting part which limits the relative rotation of the piston rod and the fixing sleeve is arranged between the piston rod and the fixing sleeve, a limiting plate is arranged at the lower end of the piston rod, the limiting plate and the fixing sleeve are fixedly connected through a reset spring, the upper end of the piston rod is connected with a fixing block, a rotating ring is rotatably arranged on the inner wall of the;

the piston ring at the lower end of the conical filter cover is provided with at least one guide wheel, the inner wall of the air inlet cylinder is provided with a side ring, the upper end face of the side ring is provided with a plurality of protrusions corresponding to the guide wheels, when the air inlet cylinder is in actual use, high-temperature steam can generate acting force on the rotating blades, the rotating blades can drive the conical filter cover and the piston ring at the bottom of the conical filter cover to rotate, and the guide wheels on the piston ring can be intermittently impacted by the protrusions, so that the conical filter cover is bumped up and down in a reciprocating manner, and impurities blocked by the surface of the conical filter;

the impurity removing part also comprises a guide pipe arranged outside the air inlet cylinder, a butterfly valve used for controlling on-off is arranged on the guide pipe close to the air inlet cylinder, the axis of the guide pipe is parallel to the surface of the conical filter cover, a slag discharge pipe is arranged on the lower side of the outer end of the guide pipe, an electromagnetic valve is arranged on the slag discharge pipe, a telescopic rod is installed at the outer end of the guide pipe, the output end of the telescopic rod is connected with a scraping plate used for scraping away impurities on the surface of the conical filter cover, the scraping plate is positioned inside the guide pipe when auxiliary impurity removal is not needed, and the scraping plate is driven by the telescopic rod to extend into the air inlet cylinder when auxiliary impurity removal is needed so that the scraping plate is in pressing contact with the surface of the conical filter cover, so that scraping is realized, when impurity removal is carried out, the butterfly valve is only needed;

the rotation limiting part comprises a limiting protrusion arranged on the outer side of the piston rod and a limiting groove arranged on the inner wall of the fixed sleeve, and the relative rotation of the piston rod and the fixed sleeve is limited by the matching of the limiting protrusion and the limiting groove;

the heat exchange component comprises a first cache disk and a second cache disk which are arranged in the box body, the first cache disk and the second cache disk are communicated through a plurality of heat exchange tubes, a heat exchange tube group is formed by the plurality of heat exchange tubes, a plurality of power plates are arranged on the outer side of the heat exchange tube group, a transmission plate group driving the heat exchange tube group to move is formed by the plurality of power plates, the position of the transmission plate group corresponds to the position of a lower port of an air inlet cylinder, two ends of each power plate are respectively connected and fixed with the two cache disks, a communicating pipe is respectively arranged at the central positions of the outer ends of the first cache disk and the second cache disk, the outer end of each communicating pipe penetrates through the box body and extends into a cache box arranged on the outer side of the box body, and the cache boxes, the box body and the communicating pipes are rotatably connected;

the water inlet end of the left buffer tank is connected with a liquid pump arranged on the base through a water inlet pipe, a feeding port for adding a cleaning agent is further arranged on the buffer tank, a sealing cover is arranged at the feeding port, a water outlet pipe is arranged on the right buffer tank, and under the action of the liquid pump, external water flow firstly enters the left buffer tank, then enters the buffer disk, then enters the heat exchange pipe set for heat exchange, and finally is discharged along the other buffer disk and the buffer tank;

when the heat exchange pipe set is used in actual work, high-temperature steam enters the box body along the air supply pipe and the air inlet cylinder, and when the high-temperature steam enters the box body, the high-temperature steam can exchange heat with the heat exchange pipe set, so that heat in hot air is taken away by water flow in the heat exchange pipe, meanwhile, the high-temperature steam can drive the heat exchange pipe set to rotate through the transmission plate set, so that impact force generated by the high-temperature steam can be removed, the problem of local stress is avoided, and meanwhile, the problem of deformation of the heat exchange pipe set caused by the fact that the temperature of local heat exchange pipes is too high and the temperature of other pipes is low is also avoided by the mode of promoting the heat exchange pipe set;

the rotary sealing element comprises at least one sealing ring and a rotary bearing, the bearing is used for realizing rotation between the rotating parts, and the sealing ring is used for realizing sealing.

Compared with the prior art, the invention has the beneficial effects that: the rotary heat exchange tube is designed aiming at the defects of the existing device, so that the heat exchange tube can realize the rotation of the heat exchange tube by utilizing airflow power while exchanging heat, thus impurities in the heat exchange tube can be better removed during cleaning, meanwhile, the rotary heat exchange tube can ensure the uniformity of heat exchange, reduce the impact of airflow on a tube body, avoid the stress generated by nonuniform heating in the heat exchange tube and ensure the service life of the heat exchange tube;

in addition, through the improvement on the steam filtering piece, impurities can be continuously accumulated around, the material can be discharged without stopping, and the practicability is high.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

FIG. 3 is a schematic diagram of the first and second cache disks of the present invention.

Wherein: the device comprises a box body 1, a power plate 2, a heat exchange tube 3, a first cache disk 4, a water outlet tube 5, a support leg 6, an air outlet port 7, a base 8, a liquid pump 9, a water inlet tube 10, a rotary sealing element 11, a communicating tube 12, a cache box 13, a second cache disk 14, a telescopic rod 15, a slag discharge tube 16, a scraping plate 17, a rotary ring 18, a return spring 19, a side ring 20, a protrusion 21, a limiting plate 22, a guide wheel 23, a conical filter cover 24, a fixing sleeve 25, a rotary blade 26, a piston rod 28, an air inlet cylinder 27, an air supply tube 29 and a guide tube 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, in an embodiment of the present invention, a condensing device of a biomass power generation waste heat recovery system includes a box body 1 and a base 8 disposed below the box body, the base 8 and the box body 1 are connected and fixed through a support leg 6, an air supply pipe 29 for providing steam is disposed above the box body 1, an end of the air supply pipe 29 is communicated with an air inlet port at an upper end of the box body 1 through an air inlet cylinder 27, and an air outlet port 7 is disposed at a lower side of the box body 1;

an impurity removing piece for removing impurities from the steam is arranged in the air inlet cylinder 27;

a heat exchange piece for exchanging heat with high-temperature steam is arranged in the box body 1;

the impurity removing part comprises a conical filter cover 24 which is rotatably arranged in an air inlet cylinder 27, a piston ring which is in sliding fit with the inner wall of the air inlet cylinder 27 is arranged on the outer side of the lower end of the conical filter cover 24, a fixing sleeve 25 penetrates through the middle position of the conical filter cover 24, a piston rod 28 which can slide up and down along the inner hole of the fixing sleeve 25 is arranged in the fixing sleeve 25, a rotation limiting part which limits the relative rotation of the piston rod 28 and the fixing sleeve 25 is arranged between the piston rod 28 and the fixing sleeve 25, a limiting plate 22 is arranged at the lower end of the piston rod 28, the limiting plate 22 and the fixing sleeve 25 are fixedly connected through a return spring 19, the upper end of the piston rod 28 is connected with a fixing block, a rotating ring 18 is rotatably arranged on the inner wall of;

at least one guide wheel 23 is arranged on a piston ring at the lower end of the conical filter cover 24, a side ring 20 is arranged on the inner wall of the air inlet cylinder 27, a plurality of protrusions 21 corresponding to the guide wheels 23 are arranged on the upper end face of the side ring 20, when the air inlet cylinder is in actual use, high-temperature steam can generate acting force on the rotating blades 26, the rotating blades 26 can drive the conical filter cover 24 and the piston ring at the bottom of the conical filter cover to rotate, the guide wheels 23 on the piston ring can be intermittently impacted by the protrusions 21, so that the conical filter cover 24 can be bumped up and down in a reciprocating manner, and impurities blocked by the surface of the conical filter;

the impurity removing part also comprises a guide pipe 30 arranged outside the air inlet cylinder 27, a butterfly valve for controlling on-off is arranged on the guide pipe close to the air inlet cylinder 27, the axis of the guide pipe 30 is parallel to the surface of the conical filter cover 24, a slag discharge pipe 16 is arranged on the lower side of the outer end of the guide pipe 30, an electromagnetic valve is arranged on the slag discharge pipe 16, a telescopic rod 15 is installed at the outer end of the guide pipe 30, the output end of the telescopic rod 15 is connected with a scraping plate 17 for scraping away impurities on the surface of the conical filter cover 24, when auxiliary impurity removal is not needed, the scraping plate 17 is positioned inside the guide pipe 30, when auxiliary impurity removal is needed, the scraping plate 17 is driven by the telescopic rod 15 to extend into the air inlet cylinder 27, so that the scraping plate 17 is in pressing contact with the surface of the conical filter cover 24, thereby scraping is realized, when impurity removal is carried out, thereby finishing discharging under the condition of no shutdown;

the rotation limiting part comprises a limiting protrusion arranged on the outer side of the piston rod 28 and a limiting groove arranged on the inner wall of the fixed sleeve 25, and the relative rotation of the piston rod 28 and the fixed sleeve 25 is limited by the matching of the limiting protrusion and the limiting groove;

the heat exchange part comprises a first cache disc 4 and a second cache disc 14 which are arranged inside a box body 1, the first cache disc 4 and the second cache disc 14 are communicated through a plurality of heat exchange tubes 3, a heat exchange tube group is constructed by a plurality of heat exchange tubes 3, a plurality of power plates 2 are arranged outside the heat exchange tube group, a transmission plate group driving the heat exchange tube group to move is constructed by the plurality of power plates 2, the position of the transmission plate group corresponds to the position of a lower port of an air inlet cylinder 27, two ends of each power plate 2 are respectively connected and fixed with the two cache discs, a communicating tube 12 is respectively arranged at the center positions of the outer ends of the first cache disc 4 and the second cache disc 14, the outer end of each communicating tube 12 penetrates through the box body 1 and extends into a cache box 13 arranged outside the box body 1, and the cache boxes 13, the box body 1 and the communicating tubes 12 are rotatably connected through a rotary sealing part 11;

the water inlet end of the left buffer tank 13 is connected with a liquid pump 9 arranged on the base 8 through a water inlet pipe 10, a feeding port for adding a cleaning agent is further arranged on the buffer tank 13, a sealing cover is arranged at the feeding port, a water outlet pipe 5 is arranged on the right buffer tank, under the action of the liquid pump 9, external water flow firstly enters the left buffer tank, then enters the buffer disc 14, then enters the heat exchange pipe set for heat exchange, and finally is discharged along the other buffer disc and the buffer tank;

when the heat exchange device is actually used, high-temperature steam enters the box body 1 along the air supply pipe 29 and the air inlet cylinder 27, and when the high-temperature steam enters the box body, the high-temperature steam can exchange heat with the heat exchange pipe set, so that heat in hot air is taken away by water flow in the heat exchange pipes, meanwhile, the high-temperature steam can drive the heat exchange pipe set to rotate through the transmission plate set, so that impact force generated by the high-temperature steam can be discharged, the problem of local stress is avoided, and meanwhile, the problem of deformation of the heat exchange pipe set caused by the fact that the temperature of the local heat exchange pipe set is too high and the temperature of other pipes is low is also avoided in the mode of promoting the heat exchange pipe set to;

the rotary sealing element 11 comprises at least one sealing ring and a rotary bearing, and the bearing is used for realizing the rotation between the rotating parts, and the sealing ring is used for realizing the sealing.

The working principle of the invention is as follows: firstly, the steam enters the air inlet cylinder 27 through the air supply pipe 29, impurities in the steam can be blocked by the conical filter cover and slide to the periphery along the conical filter cover, when in actual use, high-temperature steam can generate acting force on the rotating blades 26, the rotating blades 26 can drive the conical filter cover 24 and piston rings at the bottom of the conical filter cover to rotate, the guide wheels 23 on the piston rings can be intermittently impacted by the bulges 21, so that the conical filter cover 24 is bumped up and down in a reciprocating manner, the impurities blocked on the surface of the conical filter cover can slide to the periphery, when auxiliary impurity removal is not needed, the scraping plate 17 is positioned inside the guide pipe 30, when auxiliary impurity removal is needed, the telescopic rod 15 drives the scraping plate 17 to extend into the air inlet cylinder 27, the scraping plate 17 is in pressing contact with the surface of the conical filter cover 24, so that scraping is realized, when impurity removal is carried out, only the butterfly valve needs to be closed, thereby finishing discharging under the condition of no shutdown;

the steam that purifies gets into the inside heat transfer that carries on of box afterwards, and when getting into, high-temperature steam can take place the heat exchange with the heat exchange tube group to make the heat in the steam taken away by the rivers in the heat exchange tube, meanwhile, high-temperature steam can drive the rotation of heat exchange tube group through the driving plate group.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. A condensing device of a biomass power generation waste heat recovery system comprises a box body (1) and a base (8) arranged below the box body, wherein the base (8) is fixedly connected with the box body (1) through a supporting leg (6), an air supply pipe (29) used for providing steam is arranged above the box body (1), the end part of the air supply pipe (29) is communicated with an air inlet port at the upper end of the box body (1) through an air inlet cylinder (27), and an air outlet port (7) is arranged at the lower side of the box body (1);

the steam purifier is characterized in that an impurity removing piece which is used for removing impurities from steam and can prevent the impurities from being tiled and accumulated is arranged in the air inlet cylinder (27);

the box body (1) is internally provided with a heat exchange piece for exchanging heat with high-temperature steam.

2. The condensing device of biomass power generation waste heat recovery system according to claim 1, wherein the impurity removing member comprises a conical filter cover (24) rotatably disposed inside the air inlet cylinder (27), a piston ring slidably engaged with the inner wall of the air inlet cylinder (27) is disposed outside the lower end of the conical filter cover (24), a fixing sleeve (25) is disposed at the middle position of the conical filter cover (24), a piston rod (28) capable of sliding up and down along the inner hole of the fixing sleeve (25) is disposed in the fixing sleeve (25), a rotation limiting member for limiting the relative rotation between the piston rod (28) and the fixing sleeve (25) is disposed between the piston rod (28) and the fixing sleeve (25), a limiting plate (22) is disposed at the lower end of the piston rod (28), the limiting plate (22) and the fixing sleeve (25) are fixedly connected through a return spring (19), the upper end of the piston rod (28) is connected to a fixing block, and a rotating ring (, the rotating ring (18) and the fixed block are fixedly connected through a plurality of rotating blades (26) distributed in an array;

the piston ring at the lower end of the conical filter cover (24) is provided with at least one guide wheel (23), the inner wall of the air inlet cylinder (27) is provided with a side ring (20), and the upper end face of the side ring (20) is provided with a plurality of protrusions (21) corresponding to the guide wheels (23).

3. The condensing device of the biomass power generation waste heat recovery system according to claim 2, wherein the impurity removing part further comprises a guide pipe (30) arranged outside the air inlet cylinder (27), a butterfly valve for controlling on-off is arranged on the guide pipe (30) close to the air inlet cylinder (27), a slag discharge pipe (16) is arranged on the lower side of the outer end of the guide pipe (30), an electromagnetic valve is arranged on the slag discharge pipe (16), an expansion link (15) is installed at the outer end of the guide pipe (30), and the output end of the expansion link (15) is connected with a scraping plate (17) for scraping away impurities on the surface of the conical filter housing (24).

4. The condensation device of the biomass power generation waste heat recovery system according to claim 3, wherein the axis of the guide pipe (30) is arranged in parallel with the surface of the conical filter cover (24).

5. The condensation device of the biomass power generation waste heat recovery system according to claim 2, wherein the rotation limiting member comprises a limiting protrusion disposed on the outer side of the piston rod (28) and a limiting groove disposed on the inner wall of the fixing sleeve (25).

6. The condensing device of the biomass power generation waste heat recovery system according to claim 1, wherein the heat exchange member comprises a first buffer storage disc (4) and a second buffer storage disc (14) which are arranged inside the box body (1), the first buffer storage disc (4) and the second buffer storage disc (14) are communicated through a plurality of heat exchange tubes (3), and a plurality of heat exchange tubes (3) form a heat exchange tube group;

the heat exchange tube group is provided with a plurality of power plates (2) on the outer side, the plurality of power plates (2) form a transmission plate group for driving the heat exchange tube group to move, the position of the transmission plate group corresponds to the position of a lower port of an air inlet cylinder (27), two ends of each power plate (2) are respectively connected and fixed with two cache disks, the central positions of the outer ends of a first cache disk (4) and a second cache disk (14) are respectively provided with a communicating tube (12), the outer end of each communicating tube (12) penetrates through the box body (1) and extends into a cache box (13) arranged on the outer side of the box body (1), and the cache box (13), the box body (1) and the communicating tubes (12) are rotatably connected through a rotary sealing element (11);

the end of intaking of left buffer case (13) is passed through inlet tube (10) and is connected liquid pump (9) of setting on base (8), still be equipped with the charging port that is used for adding the cleaner on buffer case (13), charging port department is equipped with the closing cap, is equipped with outlet pipe (5) on the buffer case on right side.

7. The condensation device of the biomass power generation and heat recovery system according to claim 6, wherein the rotary sealing member (11) comprises at least one sealing ring and one rotary bearing.

8. The condensation device of the biomass power generation and waste heat recovery system according to claim 6, wherein the power plate (2) and the heat exchange tube (3) and the surfaces of the two buffer discs are provided with corrosion-resistant layers.

9. A use method of the condensing unit of the biomass power generation waste heat recovery system according to any one of claims 1 to 8 is characterized in that firstly, the condensing unit enters the air inlet cylinder (27) through the air supply pipe (29), impurities in steam can be blocked by the conical filter cover and can slide along the conical filter cover to the periphery, when the condensing unit is in practical use, high-temperature steam can generate acting force on the rotating blade (26), the rotating blade (26) can drive the conical filter cover (24) and the piston ring at the bottom of the conical filter cover to rotate, the guide wheel (23) on the piston ring can be intermittently impacted by the bulge (21), so that the conical filter cover (24) can be bumped up and down in a reciprocating manner, the impurities blocked by the surface of the conical filter cover can slide to the periphery, when auxiliary impurity removal is not needed, the scraper plate (17) is positioned in the guide pipe (30), when the auxiliary impurity removal is needed, the scraper plate (17) is driven by the telescopic rod (15) to extend, the scraping plate (17) is pressed against the surface of the conical filter cover (24) to scrape materials, and when impurities are removed, the butterfly valve is only required to be closed, then the electromagnetic valve on the slag discharge pipe is opened, so that the materials are discharged without stopping the machine;

the steam that purifies gets into the inside heat transfer that carries on of box afterwards, and when getting into, high-temperature steam can take place the heat exchange with the heat exchange tube group to make the heat in the steam taken away by the rivers in the heat exchange tube, meanwhile, high-temperature steam can drive the rotation of heat exchange tube group through the driving plate group.

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