CN210242517U

CN210242517U - Waste heat recovery assembly

Info

Publication number: CN210242517U
Application number: CN201920622248.XU
Authority: CN
Inventors: Fan Yang; 杨帆; Qitang Yi; 易启堂
Original assignee: Chongqing Yanyu Energy Saving Technology Co ltd
Current assignee: Chongqing Yanyu Energy Saving Technology Co ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-04-03
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a cooling industrial equipment technical field specifically discloses waste heat recovery subassembly, heat-absorbing cylinder including vertical setting, the heat-absorbing cylinder includes inner tube and urceolus, the passageway of heat supply exchange medium circulation has been formed between inner tube and the urceolus, the heat-absorbing cylinder top is equipped with the top cap that the lid closed the heat-absorbing cylinder, and the bottom center department of top cap is the arch of back taper. Adopt the technical scheme in this patent to solve among the prior art hot gas stream and constantly overflowed and lead to the problem that the recovery effect of waste heat reduces by a wide margin from the top of retrieving the subassembly.

Description

Waste heat recovery assembly

Technical Field

The utility model relates to a cooling industrial equipment technical field, in particular to waste heat recovery subassembly.

Background

The waste heat refers to heat energy which is generated by various heat energy conversion devices, energy utilization devices, chemical reaction devices and high-temperature workpieces and is not utilized in the production process. A large amount of waste heat which needs to be recycled exists in the industrial fields of textile printing and dyeing, electroplating processing, chemical pharmacy, printing and drying, coal slime drying, casting, electrolytic aluminum production and the like. If the energy can be fully utilized by recovery, the industrial energy loss can be greatly reduced, and meanwhile, the waste heat recovery and utilization is an important way for improving the economy and saving the fuel.

Based on the above problem, I have researched and developed waste heat recovery circulation system, this circulation system is including the recovery subassembly, circulating pump, liquid reserve tank and the heat exchanger (or the stirling generator) that communicate in proper order, and wherein the recovery subassembly is used for placing the work piece of treating the cooling, can carry out cooling treatment to the work piece of high temperature through heat exchange medium, with the heat circulation of high temperature work piece to heat exchanger (or stirling generator) department, realizes the recycle of waste heat.

In production, large-sized or medium-sized workpieces are generally transported by a travelling crane, so the top of the recovery assembly is usually arranged in an open manner so as to be convenient for taking and placing the workpieces, but because hot air flow has rising characteristics, the hot air flow continuously overflows from the open portion in the rising process, a large amount of heat is taken away, and the effect of waste heat recovery is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a waste heat recovery subassembly has solved among the prior art hot air current and has constantly overflowed and lead to the problem that the recovery effect of waste heat reduces by a wide margin from the top of retrieving the subassembly.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the waste heat recovery assembly comprises a vertically arranged heat absorption barrel, the heat absorption barrel comprises an inner barrel and an outer barrel, a heat supply exchange medium circulating channel is formed between the inner barrel and the outer barrel, a top cover covering the heat absorption barrel is arranged at the top of the heat absorption barrel, and a protrusion in an inverted cone shape is arranged at the center of the bottom of the top cover.

The technical principle and the effect of the technical scheme are as follows:

1. the top cover is arranged at the top of the heat absorbing cylinder in the scheme, so that the overflow amount of hot air from the top of the heat absorbing cylinder is reduced, the efficiency of waste heat recovery is improved, and the problem that the recovery effect of the waste heat is greatly reduced due to continuous overflow of the hot air from the top of the recovery assembly in the prior art is solved.

2. In the scheme, the heat absorbing barrel is arranged to be of an interlayer structure of the inner barrel and the outer barrel, and the heat exchange medium circulates in the channel between the inner barrel and the outer barrel, so that when hot air flow rises to the position near the top cover, the hot air flow is blocked by the protrusion, and the protrusion is in an inverted cone shape, so that the hot air flow can flow along the wall of the outer periphery of the protrusion towards the inner barrel, heat is exchanged with the heat exchange medium between the inner barrel and the outer barrel quickly, the amount of heat exchange between the hot air flow and the outer world through the top cover is reduced, and the waste heat recovery effect.

Further, a cavity is arranged in the top cover.

Has the advantages that: because the thermal conductivity of the gas is smaller than that of the solid, the arrangement of the cavity can play a certain heat insulation role and reduce the heat exchange amount between the hot gas flow and the outside.

Further, the top of cavity is uncovered and is set up, and the top of cavity is equipped with the detachable apron, and the cavity intussuseption is filled with insulation material.

Has the advantages that: the thermal insulation material is added, so that the thermal insulation effect on hot air flow can be further improved, and meanwhile, the cover plate can be detachably connected, so that the operator can conveniently take and place the thermal insulation material in the cavity.

Furthermore, a groove is arranged on the outer wall of the inner cylinder, and a heat absorption pipe for heat exchange medium flowing is arranged in the groove.

Has the advantages that: the setting of recess is convenient for on the one hand to the location of heat-absorbing pipe, and the distance of the inside hot gas flow of on the other hand recess can also further be reduced to the setting of on the other hand recess, improves the effect of heat transfer.

Furthermore, a plurality of heat dissipation holes communicated with the grooves are formed in the inner wall of the inner barrel.

Has the advantages that: therefore, hot air can directly enter the groove from the heat dissipation holes, so that the hot air can directly contact the heat absorption pipe, and the heat exchange effect of the heat exchange medium is further improved.

Furthermore, the bottom of the top cover is provided with a plurality of heat conduction units which are uniformly distributed along the bulges, and the heat conduction units conduct the heat at the bottom of the top cover to the heat absorption pipes.

Has the advantages that: because the hot gas flow is along the in-process that the arch periphery flows, partial heat exchanges with the outside air through the top cap, consequently the setting of heat conduction unit can improve the speed that the hot gas flow flows to the section of thick bamboo wall flow of inner tube, and then improves waste heat recovery's effect.

Further, the heat conduction unit includes the heat-conducting plate and drives the heat-conducting plate around the reciprocating swing's of horizontal axis actuating mechanism, the heat-conducting plate is located between arch and the inner tube, be fixed with a plurality of gasbags between heat-conducting plate and the arch, be equipped with the check valve that admits air on the gasbag, be equipped with the exhaust hole of intercommunication gasbag on the heat-conducting plate, be equipped with the check valve of giving vent to anger in the exhaust hole.

Has the advantages that: the heat-conducting plate is at reciprocal wobbling in-process for the continuous inflation of gasbag is with dwindling, and when the gasbag volume reduced, its inside atmospheric pressure increased, the check valve that gives vent to anger opened, and the inside steam of gasbag is discharged through the exhaust hole, therefore the gasbag combustion gas stream can lead to the fact the effect of buffering to the hot gas stream that is close to the top cap, slows down the speed that the hot gas stream rises, reduces the hot gas stream and flows through the probability of top cap with external heat transfer, thereby improves the recovery effect of waste heat.

Further, the vent hole is obliquely arranged, and an outlet at one side far away from the air bag faces downwards.

Has the advantages that: therefore, the airflow discharged by the air bag faces downwards, and the downward impact force is given to the hot air flow close to the top cover, so that the buffer force generated by the hot air flow is improved, and the rising rate of the hot air flow is further slowed down.

Furthermore, a plurality of metal supporting tubes communicated with the heat absorbing tubes are distributed at the bottom of the heat absorbing tube in a staggered manner.

Has the advantages that: due to the arrangement of the supporting pipe, the high-temperature workpiece is directly placed on the supporting pipe, the heat exchange medium in the supporting pipe can directly recover waste heat of the high-temperature workpiece, and the cooling rate of the high-temperature workpiece is improved.

Furthermore, a material receiving plate which is connected with the rack in a horizontal sliding mode is arranged below the supporting tube.

Has the advantages that: when the high-temperature workpiece is placed on the supporting tube, a small amount of collision is generated between the high-temperature workpiece and the supporting tube, and a certain amount of broken carbon residues and the like are attached to certain workpieces, such as prebaked electrodes of electrolytic aluminum, and the broken carbon residues on the workpieces fall off due to collision vibration when the workpieces are placed on the supporting tube, and the broken carbon residues can be collected by the aid of the material receiving plate.

Drawings

Fig. 1 is a perspective view of an absorber according to an embodiment of the present invention;

FIG. 2 is a schematic view of a front partial cut-away of an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic sectional view of the top cover in the first embodiment;

FIG. 5 is a schematic view of a partial cross-section of the top cover in the second embodiment.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the heat absorption device comprises a heat absorption barrel 100, an inner barrel 101, an outer barrel 102, a groove 103, heat dissipation holes 104, a heat absorption pipe 105, mounting holes 106, a hoop 107, mounting lugs 108, a support pipe 109, a material receiving plate 110, a top cover 200, a protrusion 201, a cavity 202, a cover plate 203, a heat conduction plate 300, a speed reduction motor 301, a guide rod 302, a bearing seat 303, an incomplete gear 304, an end face gear 305, an air bag 306, an air discharge hole 307 and an air outlet one-way valve 308.

An embodiment substantially as shown in figures 1 and 2 of the accompanying drawings:

the waste heat recovery assembly comprises a rack, wherein a vertically arranged heat absorption barrel 100 is fixed on the rack, the heat absorption barrel 100 is of a sandwich structure and specifically comprises an inner barrel 101 and an outer barrel 102, the inner barrel 101 and the outer barrel 102 are fixedly arranged, a channel with closed upper and lower ends is formed between the inner barrel 102 and the outer barrel 102, a spiral groove 103 is formed in the outer wall of the inner barrel 101, the cross section of the groove 103 is semicircular, as shown in fig. 3, a plurality of heat dissipation holes 104 corresponding to and communicated with the positions of the groove 103 are formed in the inner wall of the inner barrel 101, the heat dissipation holes 104 are through holes, a heat absorption pipe 105 for circulating a heat supply exchange medium is clamped in the groove 103, and mounting holes 106 for allowing the heat absorption pipe 105 to pass through are formed in the upper portion and the lower portion.

Be equipped with the locking mechanism of a plurality of fixed heat absorption pipes 105 on inner tube 101 outer wall, wherein locking mechanism is including being semi-annular staple bolt 107 and bolt, the outside (towards the protruding one side of staple bolt 107) bending type in both ends of staple bolt 107 becomes installation ear 108, locating hole I has been seted up on installation ear 108, be equipped with a set of screw hole I that corresponds with the locating hole position on inner tube 101 outer wall, two screw hole I in a set of screw hole I are located both sides about recess 103 respectively, pack the bolt into in locating hole I and screw hole I, thereby the realization is fixed the staple bolt 107 in heat absorption pipe 105's outside.

A plurality of supporting tubes 109 communicated with the heat absorbing tube 105 are distributed at the bottom of the heat absorbing tube 100 in a criss-cross manner, the supporting tubes 109 can be fixed on the frame or fixed below the heat absorbing tube 100 in other manners, the supporting tubes 109 are hard tubes made of stainless steel, a material receiving plate 110 horizontally connected to the frame in a sliding manner is further arranged below the supporting tubes 109, and the material receiving plate 110 is used for collecting impurities falling from a workpiece to be heat absorbed.

Be equipped with the top cap 200 that covers the heat absorbing section of thick bamboo 100 at the top of heat absorbing section of thick bamboo 100, top cap 200 is circular in this embodiment, as shown in fig. 4, is equipped with the arch 201 that is the back taper in the center department of top cap 200 bottom, is equipped with the open cavity in top 202 in top 200, and cavity 202 is the back taper equally, can dismantle on the top cap 200 to be connected with the confined apron 203 of cavity 202, specifically set up to: a positioning hole II is formed in the cover plate 203, a threaded hole II corresponding to the positioning hole II is formed in the top cover 200, bolts are installed in the positioning hole II and the threaded hole II to achieve installation of the cover plate 203 on the top cover 200, when the heat insulation cover is used, a heat insulation material is filled in the cavity 202, and in the embodiment, the heat insulation material is glass wool; a lifting lug convenient for lifting the crane is further arranged on the top cover 200.

The recovery subassembly of this embodiment sets up in waste heat recovery circulation system, and this circulation system is including the recovery subassembly that communicates in proper order, the circulating pump, liquid reserve tank and heat exchanger (or stirling generator), and heat-absorbing tube 105, stay tube 109, the circulating pump, liquid reserve tank and heat exchanger (or stirling generator) have constituted the circulation circuit of heat exchange medium, and this embodiment is when cooling down the work piece, and the heat exchange medium that lets in heat-absorbing tube 105 and stay tube 109 is the low melting point liquid metal that patent No. 201410268984.1 'a low melting point liquid metal and preparation method and application' provided, by the mass fraction be the alloy that gallium 37%, indium 22%, bismuth 18.6%, aluminium 3%, iron 2%, magnesium 2.4% and tin 15% are constituteed, the melting point of this alloy is 3 ℃.

The specific implementation process is as follows:

the prebaked electrode of electrolytic aluminum is placed on the supporting tube 109 by a travelling crane (or other modes) in a workshop, then the top cover 200 is covered on the top of the heat absorbing cylinder 100 by the lifting lugs, when a workpiece is placed in, the workpiece slightly collides with the supporting tube 109, so that the residual slag on the prebaked electrode falls on the material receiving plate 110 through the gap between the supporting tubes 109, the air around the high-temperature workpiece is heated, and the hot air flow continuously flows upwards due to the rising characteristic of the hot air flow.

And a circulating pump in the circulating system is started, so that the liquid metal continuously circulates in the heat absorption pipe 105 and the supporting pipe 109, the low-temperature liquid metal flowing through the heat absorption pipe 105 and the supporting pipe 109 continuously takes away heat in the vicinity of the workpiece and the upward flowing hot air flow, the absorption of waste heat is realized, and meanwhile, when the liquid metal flows through the heat exchanger (or the Stirling generator), the recycling of the waste heat is realized.

When the hot air flow rises to the vicinity of the top cover 200, the protrusion 201 is in an inverted cone shape, so that the hot air flow flows along the outer periphery of the protrusion 201 to the side close to the inner cylinder 101, the hot air flows through the heat dissipation holes 104 to enter the groove 103, and the heat of the hot air is taken away by the liquid metal in the heat absorption pipe 105.

The difference between the second embodiment and the first embodiment is that:

as shown in fig. 5, a plurality of heat conducting units are uniformly distributed at the bottom of the top cover 200 along the protrusion 201, the heat conducting units are used for dispersing heat at the bottom of the top cover 200 to the heat absorbing pipe 105, wherein the heat conducting units include a heat conducting plate 300 and a driving mechanism for driving the heat conducting plate 300 to swing back and forth around a horizontal axis, the heat conducting plate 300 is located between the protrusion 201 and the inner cylinder 101, the driving mechanism in this embodiment includes a speed reducing motor 301 and a guide rod 302, the speed reducing motor 301 is fixed at the top of the top cover 200, and the top cover 200 is provided with a shaft hole for an output shaft of the speed reducing motor 301 to pass through, an incomplete gear 304 located below the top cover 200 is coaxially fixed on a driving shaft of the speed reducing: a bearing seat 303 is fixed at the bottom of the top cover 200, the guide rod 302 is connected with the bearing seat 303 through a bearing, an end face gear 305 engaged with the incomplete gear 304 is coaxially fixed at the end of the guide rod 302, in the embodiment, the end face gear 305 and the incomplete gear 304 have straight teeth, the guide rod 302 is provided with a torsion spring fixed at the bottom of the top cover 200, and the heat conducting plate 300 is fixed on the guide rod 302.

When the incomplete gear 304 and the face gear 305 are in an unmeshed state, the lower end of the heat conducting plate 300 inclines towards one side of the protrusion 201, during operation, the reduction motor 301 drives the incomplete gear 304 to rotate at a slow speed, when the incomplete gear 304 is meshed with the face gear 305, the guide rod 302 rotates, so that the heat conducting plate 300 swings towards one side far away from the protrusion 201, meanwhile, the torsion spring stores energy, when the incomplete gear 304 is disengaged from the face gear 305, the torsion spring releases energy, so that the guide rod 302 rotates in a reverse direction rapidly, the heat conducting plate 300 resets rapidly, and therefore reciprocating swing of the heat conducting plate 300 is achieved.

A plurality of air bags 306 are fixed between the heat conducting plate 300 and the bulge 201, one side of each air bag 306 is bonded on the bulge 201, the other side of each air bag 306 is bonded on the heat conducting plate 300, gaps are reserved among the air bags 306, each air bag 306 is provided with an air inlet one-way valve, a plurality of vent holes 307 communicated with the inside of each air bag 306 are formed in the heat conducting plate 300, the vent holes 307 are obliquely arranged relative to the heat conducting plate 300, namely when the heat conducting plate 300 is close to the bulge 201, the central axis of each vent hole 307 is in a vertical state, an air outlet one-way valve 308 is arranged in each vent hole 307, when the volume of each air bag 306 is reduced, the air pressure in each air bag 306 is increased, the air outlet one-way valve 308 is opened, the air in each air bag 306 is exhausted, and when the volume of each air bag 306 is increased.

Because most of the heat of the hot air flow is absorbed by the heat exchange medium when the hot air flow rises to the vicinity of the top cover 200, the temperature is greatly reduced to about 100-.

The specific implementation process is as follows:

after the top cover 200 is covered on the heat absorbing tube 100, the power supply connected with the speed reducing motor 301 is turned on, so that the heat conducting plate 300 in the heat absorbing tube 100 swings back and forth, when hot air flow rises to be close to the top cover 200, the hot air flows to the periphery of the protrusion 201 due to the blocking of the protrusion 201, and the air bag 306 between the protrusion 201 and the heat conducting plate 300 exists, the air bag 306 has a certain blocking effect on the hot air flow, so that the hot air flows to the heat conducting plate 300, when the heat conducting plate 300 swings away from one side of the protrusion 201, the thrust force for the hot air to flow to the side wall of the inner tube 101 is given, the hot air flow is enabled to quickly exchange heat with the heat exchange medium in the heat.

When the heat conducting plate 300 swings to the side far away from the protrusion 201, the air bag 306 stretches the inner volume to increase, the inner air pressure is reduced, the air inlet check valve is opened, the external hot air flows into the air bag 306, when the heat conducting plate 300 swings to the side near the protrusion 201, the air bag 306 is extruded, the volume of the air bag 306 is reduced, the inner air pressure is increased, the air outlet check valve 308 is opened, the hot air in the air bag 306 is discharged through the air outlet 307, and the outlet of the air outlet 307 inclines downwards, so that the hot air flow discharged by the air bag 306 provides downward acting force for the hot air flow close to the top cover 200, the rising speed of the hot air flow is reduced, the probability of heat exchange between the hot air flow.

In addition, since the heat conduction plate 300 is reset by the energy released by the torsion spring, the resetting speed of the heat conduction plate 300 is high, the flow rate of the gas discharged through the exhaust hole 307 is high, and the acting force on the gas flow below the gas flow is also increased.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Waste heat recovery subassembly, its characterized in that: the heat absorption device comprises a vertically arranged heat absorption barrel, wherein the heat absorption barrel comprises an inner barrel and an outer barrel, a heat supply exchange medium circulating channel is formed between the inner barrel and the outer barrel, a top cover for covering the heat absorption barrel is arranged at the top of the heat absorption barrel, and a protrusion in an inverted cone shape is arranged at the center of the bottom of the top cover.

2. The heat recovery assembly of claim 1, wherein: a cavity is arranged in the top cover.

3. The heat recovery assembly of claim 2, wherein: the top of cavity is uncovered and is set up, and the top of cavity is equipped with detachable apron, and the cavity intussuseption is filled with insulation material.

4. The heat recovery assembly of claim 1, wherein: the outer wall of the inner cylinder is provided with a groove, and a heat absorption pipe for heat supply exchange medium flowing is arranged in the groove.

5. The heat recovery assembly of claim 4, wherein: a plurality of heat dissipation holes communicated with the grooves are formed in the inner wall of the inner barrel.

6. The heat recovery assembly of claim 1, wherein: the bottom of top cap is equipped with a plurality of heat conduction units along protruding equipartition, heat conduction unit leads the heat of top cap bottom to heat absorption pipe department.

7. The heat recovery assembly of claim 6, wherein: the heat conduction unit includes heat-conducting plate and the actuating mechanism that drives the heat-conducting plate and reciprocate around horizontal axis, the heat-conducting plate is located between arch and the inner tube, be fixed with a plurality of gasbags between heat-conducting plate and the arch, be equipped with the check valve that admits air on the gasbag, be equipped with the exhaust hole of intercommunication gasbag on the heat-conducting plate, be equipped with the check valve of giving vent to anger in the exhaust hole.

8. The heat recovery assembly of claim 7, wherein: the vent hole is obliquely arranged, and an outlet at one side far away from the air bag faces downwards.

9. The heat recovery assembly of claim 1, wherein: and a plurality of metal supporting tubes communicated with the heat absorbing tubes are distributed at the bottom of the heat absorbing tube in a staggered manner.

10. The heat recovery assembly of claim 9, wherein: and a material receiving plate connected with the frame in a horizontal sliding manner is arranged below the supporting tube.