CN117231472A - Cooling-waste heat recovery device and system of multistage compressor and multistage compressor - Google Patents
Cooling-waste heat recovery device and system of multistage compressor and multistage compressor Download PDFInfo
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- CN117231472A CN117231472A CN202311490115.9A CN202311490115A CN117231472A CN 117231472 A CN117231472 A CN 117231472A CN 202311490115 A CN202311490115 A CN 202311490115A CN 117231472 A CN117231472 A CN 117231472A
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- 239000002918 waste heat Substances 0.000 title claims abstract description 59
- 238000011084 recovery Methods 0.000 title claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 111
- 239000007789 gas Substances 0.000 claims abstract description 52
- 230000017525 heat dissipation Effects 0.000 claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 description 36
- 230000006835 compression Effects 0.000 description 35
- 238000001816 cooling Methods 0.000 description 27
- 230000005855 radiation Effects 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000009467 reduction Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses a cooling-waste heat recovery device and a cooling-waste heat recovery system of a multistage compressor, and the multistage compressor comprises a shell, wherein the shell is provided with a cavity and can accommodate a heat exchange piece and a flow dividing piece, and the flow dividing piece comprises: an input, a first output and a second output; the heat exchange medium enters the inside of the flow dividing piece from the input end of the flow dividing piece and flows out from the output end of the flow dividing piece after being divided; a part of the split heat exchange medium flows to the heat exchange piece through the first output end to complete heat exchange, and the other part of the split heat exchange medium flows to the heat dissipation structure of the multistage press heating component through the second output end to complete heat exchange and then flows back to the inside of the shell; the invention can intensively cool down and recycle waste heat of compressed gas and heating components of the multistage compressor, saves resources, and does not need to independently arrange a liquid supply device for conveying heat exchange medium aiming at the heat dissipation structure of each heating component in the multistage compressor, so that the whole structure of the multistage compressor is more compact, the volume is smaller, and the space occupation is reduced.
Description
Technical Field
The invention relates to the technical field of multistage compressors, in particular to a cooling-waste heat recovery device and system of a multistage compressor and the multistage compressor.
Background
At present, gas compression is generally carried out through a multi-stage compressor, and a large amount of heat is generated by the gas after each stage of compression, so that the high-temperature compressed gas is not beneficial to the subsequent compression, and the compressed gas needs to be subjected to cooling treatment; the multistage compressor comprises a compressor body and a control cabinet, wherein the compressor body is provided with at least two stages of compression parts and a motor part for driving the compression parts to compress gas, a plurality of electric devices are arranged in the control cabinet, and in the operation process of the multistage compressor, a large amount of heat is generated by the motor part and the electric devices in the control cabinet, so that the temperature needs to be reduced in time, and the high-temperature fault of the multistage compressor is avoided.
Heat exchange mechanism through among the prior art carries out heat transfer cooling to compressed gas, and the motor portion of multistage compressor is provided with heat radiation structure, and the inside heat radiation structure that also is provided with of switch board, though can play the cooling effect, but heat exchange mechanism and each heat radiation structure mutually independent, the structure is complicated, and whole volume is big, and a large amount of occupation space can not concentrate recycle with the waste heat after the heat dissipation moreover, extravagant a large amount of resources.
Disclosure of Invention
The invention aims to provide a cooling-waste heat recovery device and system of a multistage compressor and the multistage compressor, wherein the device, the system and the multistage compressor are used for intensively cooling compressed gas and heating components of the multistage compressor and recovering waste heat, so that the whole structure is simplified, and resources are saved.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a multistage compressor's cooling-waste heat recovery device, includes the shell that has the cavity and can hold heat transfer piece and reposition of redundant personnel spare, and the reposition of redundant personnel spare includes: an input, a first output and a second output; the heat exchange medium enters the inside of the flow dividing piece from the input end of the flow dividing piece and flows out from the output end of the flow dividing piece after being divided; and after the heat exchange is completed from the second output end to the heat dissipation structure of the heating component of the multistage press, the other part of the heat exchange medium flows back to the inside of the shell.
The heat exchange medium entering the shell is split by arranging the splitter inside the shell, so that a part of the heat exchange medium exchanges heat with the heat exchange part inside the shell to finish cooling of compressed gas, and the rest split heat exchange medium is conveyed to a heat-generating component heat-dissipating structure of the multistage compressor through a liquid supply hole to exchange heat and flows back to the inside of the shell through a backflow hole after heat exchange; therefore, the heat dissipation of the heating components can be completed without independently arranging a liquid supply device for conveying heat exchange media aiming at the heat dissipation structure of each heating component in the multistage compressor, the compressed gas can be subjected to heat exchange and temperature reduction, and the waste heat after heat exchange can be intensively recovered to the inside of the shell and is conveyed to equipment needing heat utilization, so that heat energy resources are effectively utilized.
Based on the technical scheme, the invention can be improved as follows:
further, a liquid inlet hole is formed in the shell, and a heat exchange medium sequentially flows through the liquid inlet hole, the input end of the flow dividing piece, the first output end of the flow dividing piece and the heat exchange piece;
the shell is provided with a liquid supply hole and a backflow hole, the shunted heat exchange medium sequentially flows through the liquid supply hole and a heat dissipation structure of a heating component of the multi-stage press from a second output end of the shunt piece, and after heat exchange treatment is carried out through the heat dissipation structure, the heat exchange medium flows back to the cooling-waste heat recovery device through the backflow hole;
the shell is provided with liquid discharge holes, and the heat exchange medium subjected to heat exchange by the heat exchange piece and the heat exchange medium subjected to heat exchange by the heat dissipation structure are intensively discharged through the liquid discharge holes and are conveyed to corresponding heat utilization equipment.
Further, be provided with first baffle in the shell, first baffle separates the inside cavity of shell into the first cavity of holding reposition of redundant personnel spare to and the second cavity of holding heat transfer spare, offered the drainage passageway on the first baffle, the heat transfer medium of a portion after reposition of redundant personnel spare reposition of redundant personnel is through the drainage passageway from first cavity inflow second cavity in with the heat transfer spare heat transfer.
Further, at least one second partition plate is arranged in the second chamber, and the second partition plate divides the inner space of the second chamber into at least two heat exchange cavities which are arranged side by side.
Further, the heat exchange component is at least two heat exchange tube groups, and each heat exchange tube group is accommodated in one heat exchange cavity; the heat exchange tube group comprises two opposite sealing plates and a plurality of inner fin heat exchange tubes arranged between the two sealing plates, the inner fin heat exchange tubes are parallel to the flowing direction of the compressed gas, and the compressed gas can circulate inside the inner fin heat exchange tubes.
The inflow compressed gas can be divided into a plurality of air flows through the plurality of inner fin heat exchange tubes, so that the contact area between the compressed gas and the heat exchange tube group is increased, and the heat exchange and cooling efficiency is improved.
Further, the drainage channel comprises a converging groove arranged on the top surface of the first partition plate, the converging groove is opposite to the top of the heat exchange piece in each heat exchange cavity, and a plurality of liquid penetrating holes penetrating through the bottom surface of the first partition plate are formed in the bottom of the converging groove.
The heat exchange medium flowing into the converging groove can be split into a plurality of liquid flows through the liquid penetrating holes on the bottom of the converging groove, so that the contact area between the heat exchange medium and a heat exchange piece is increased, and the heat exchange efficiency is improved.
Further, the heat exchange piece is a heat exchange tube capable of being introduced with a heat exchange medium, the liquid inlet end of the heat exchange tube is connected with the drainage channel on the first partition board, the liquid outlet end of the heat exchange tube is connected with the liquid discharge hole on the shell, and the backflow hole is connected with the liquid outlet end of the heat exchange tube in parallel through a pipeline; the heat exchange tubes extend in a roundabout manner between the heat exchange cavities and repeatedly pass through the second partition plate to form a plurality of tube sections, and gaps capable of circulating compressed gas are formed between two adjacent tube sections.
The heat exchange can be carried out on each heat exchange cavity through one heat exchange tube, heat exchange medium circulates in the heat exchange tube, so that the heat exchange medium is effectively prevented from leaking, the air inlet and the air outlet on the shell are not required to be closed, the heat exchange medium can be ensured to be in full contact with the heat exchange tube, and the situation that the heat exchange tube cannot cover the heat exchange medium is avoided; the heat exchange tube adopts a roundabout extending structure and is provided with a plurality of tube sections, so that a plurality of gaps for circulating compressed gas can be formed, the inflowing compressed gas is divided into a plurality of air flows, and the heat exchange efficiency is further improved.
Further, the drainage channel is a converging hole arranged on the first partition board, the top end of the converging hole is connected with one flow distributing end of the flow distributing piece through a pipeline, the bottom end of the converging hole is connected with the liquid inlet end of the heat exchange tube, and the liquid outlet end of the heat exchange tube is connected with the liquid outlet hole on the shell.
The invention also provides a cooling-waste heat recovery system of the multistage compressor, which comprises a compressor body, a control cabinet and a cooling-waste heat recovery device of the multistage compressor; the compressor body comprises a motor part, and the motor part is provided with a motor cover; the cooling-waste heat recovery device can convey and reflux heat exchange medium to a heat dissipation structure arranged on the motor cover and a heat dissipation structure arranged in the control cabinet.
Through multistage compressor's cooling-waste heat recovery system, need not to set up the confession liquid device that carries heat transfer medium alone to each heating element's heat radiation structure, this system not only can cool down compressed gas, but also can carry and backward flow heat transfer medium to the heat radiation structure that sets up on the motor housing and the heat radiation structure that sets up in the switch board respectively, resources are saved for multistage compressor overall structure is compacter, and the volume is littleer, reduces space occupation.
Further, the heat radiation structure that sets up in the switch board is for being used for installing the electrical equipment mounting panel of electrical equipment, and the electrical equipment mounting panel is inside to be provided with the heat radiation passageway, and the heat radiation passageway is the circuitous arrangement of S type in electrical equipment installation department, and the heat radiation passageway that is located between two adjacent electrical equipment is the straight line and arranges.
The S-shaped roundabout heat dissipation channels are arranged at the electric device installation positions of the electric device installation plates, and the linear heat dissipation channels are arranged between two adjacent electric devices, so that not only can the heat exchange and the temperature reduction of each electric device be carried out, but also the length of the heat dissipation channels between the two adjacent electric devices can be shortened, the stroke of a heat exchange medium is correspondingly reduced, the heat exchange medium can flow between the electric devices rapidly, and the heat exchange efficiency is improved.
The invention also provides a multistage compressor, which comprises the cooling-waste heat recovery system of the multistage compressor.
In summary, compared with the prior art, the invention has the following beneficial effects: according to the invention, the heat exchange medium entering the shell is split through the splitting piece, a part of the heat exchange medium exchanges heat with the heat exchange piece in the shell, the compressed gas is cooled through the heat exchange piece, the rest of the split heat exchange medium is conveyed to the heat radiating structure of the heating component of the multistage compressor through the liquid supply hole to exchange heat, and the heat exchange medium flows back to the shell through the backflow hole after heat exchange, so that the compressed gas and the heat generating component of the multistage compressor can be cooled and recycled in a concentrated manner, resources are saved, and the liquid supply device for conveying the heat exchange medium is not required to be independently arranged for the heat radiating structure of each heat generating component in the multistage compressor, so that the whole structure of the multistage compressor is more compact, the volume is smaller, and the space occupation is reduced.
Drawings
The invention will be described in further detail with reference to the accompanying drawings and specific embodiments
FIG. 1 is a schematic diagram of a cooling-waste heat recovery apparatus of a multistage compressor according to a first embodiment;
FIG. 2 is a schematic diagram showing a front side structure of a cooling-waste heat recovery device of a multistage compressor connected to the compressor in the first embodiment;
FIG. 3 is a schematic view showing a rear structure of a cooling-waste heat recovery device of a multistage compressor connected to the compressor in the first embodiment;
FIG. 4 is a schematic diagram of a cooling-waste heat recovery device of a multistage compressor according to the first embodiment with a first partition and a flow divider removed;
fig. 5 is a schematic structural diagram of a cooling-waste heat recovery device of a multistage compressor in the second embodiment;
FIG. 6 is a schematic view of a heat exchange tube with outer fins according to a second embodiment;
fig. 7 is a schematic diagram of a cooling-waste heat recovery system of a multistage compressor in the third embodiment;
fig. 8 is a schematic diagram of a liquid cooling passage structure of a motor cover in the third embodiment;
fig. 9 is a schematic diagram of a heat dissipation channel structure of an electric device mounting board in the third embodiment.
The marks on the accompanying drawings: 1-shell, 1 a-liquid inlet, 1 b-liquid outlet, 1 c-first air inlet, 1 d-first air outlet, 1 e-second air inlet, 1 f-second air outlet, 1 g-first liquid supply hole, 1 h-second liquid supply hole, 1 i-first reflow hole, 1 j-second reflow hole, 2-first baffle, 2 a-sink, 2 b-liquid permeable hole, 2 c-sink, 3-four-way joint, 4-water pump, 5-second baffle, 6-inner fin heat exchange tube, 7-first sealing plate, 8-second sealing plate, 9-outer fin, 10-control cabinet, 11-compressor body, 11 a-compression part, 11 b-motor part, 11 c-liquid cooling channel, 12-electric device mounting plate, 12 a-heat dissipation channel.
Detailed Description
The following description of specific embodiments of the invention is provided to aid in understanding the invention and is not to be construed as limiting the invention, as illustrated in the accompanying drawings. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
Referring to fig. 1 to 4, the present invention relates to a cooling-waste heat recovery device of a multistage compressor, which includes a housing 1, and heat exchanging members provided in the housing 1 to exchange heat; as can be seen from the figure, the shell 1 is in a hollow rectangle, the shell 1 is provided with an air inlet, an air outlet, a liquid inlet hole 1a and a liquid outlet hole 1b, the air inlet end of the heat exchange piece is connected with the air inlet on the shell 1, and the air outlet end of the heat exchange piece is connected with the air outlet on the shell 1; compressed gas enters the shell 1 from the air inlet, exchanges heat through the heat exchange piece, cools down, and flows out from the air outlet; the heat exchange medium flows into the shell 1 through the liquid inlet hole 1a, absorbs the heat of the heat exchange piece and is discharged from the liquid outlet hole 1b.
The cooling-waste heat recovery device also comprises a flow dividing piece which is arranged in the shell 1 and can divide the heat exchange medium, and the shell 1 is also provided with a liquid supply hole and a backflow hole; the flow dividing piece is provided with a liquid inlet end and at least two flow dividing ends, the liquid inlet end of the flow dividing piece is connected with the liquid inlet hole 1a on the shell 1, one of the flow dividing ends of the flow dividing piece is used for conveying heat exchange media to the heat exchange piece, the other flow dividing ends of the flow dividing piece are connected with the liquid supply hole so as to be convenient for conveying the heat exchange media to the heat radiating structure of the heating part of the multistage compressor for cooling, the cooled heat exchange media flow back to the inside of the shell 1 from the backflow hole, are discharged from the liquid discharge hole 1b in a concentrated mode and are conveyed to corresponding heat utilization equipment through a pipeline; therefore, the cooling and waste heat recovery device can intensively cool and recover the heat-generating components of the compressed gas and the multistage compressor, resources are saved, and a liquid supply device for conveying heat exchange media is not required to be independently arranged on the heat dissipation structure of each heat-generating component in the multistage compressor, so that the whole structure of the multistage compressor is more compact, the volume is smaller, and the space occupation is reduced.
Specifically, the casing 1 is provided with a top plate, a bottom plate, a first side plate, a second side plate, a third side plate and a fourth side plate, wherein the first side plate is opposite to the third side plate, the second side plate is opposite to the fourth side plate, and the top plate, the bottom plate and the four side plates are mutually spliced to form a closed cavity; the inside of the shell 1 is provided with a first partition board 2, the first partition board 2 divides a cavity inside the shell 1 into two layers of chambers, the chamber positioned at the top layer is named as a first chamber, and the chamber positioned at the bottom layer is named as a second chamber for convenience of description; a drainage channel is formed in the first partition board 2 and is communicated with the first cavity and the second cavity; the liquid inlet hole 1a and the liquid supply hole are communicated with the first chamber, the air inlet, the air outlet, the reflux hole and the liquid discharge hole 1b are communicated with the second chamber, the flow dividing piece is positioned in the first chamber, and the heat exchange piece is positioned in the second chamber; the feed liquor end of reposition of redundant personnel spare passes through the pipeline and is connected with feed liquor hole 1a, and one of them reposition of redundant personnel end of reposition of redundant personnel spare carries heat transfer medium to the drainage passageway, and other reposition of redundant personnel ends of reposition of redundant personnel spare pass through the pipeline and are connected with the feed liquor hole.
The number of the liquid supply holes and the reflow holes can be one or more, and the arrangement is specifically based on the number of heat generating components of the multistage compressor which need to dissipate heat, in this embodiment, two liquid supply holes and two reflow holes are used for explaining, specifically, a first liquid supply hole 1g and a second liquid supply hole 1h, and a first reflow hole 1i and a second reflow hole 1j, wherein the first liquid supply hole 1g is located on a second side plate of the housing 1, the second liquid supply hole 1h is located on a fourth side plate of the housing 1, the first reflow hole 1i and the second reflow hole 1j are both located on a first side plate of the housing 1, and the liquid inlet hole 1a and the liquid outlet hole 1b are both located on a fourth side plate of the housing 1.
In the specific implementation, compressed gas enters the second chamber from the air inlet, exchanges heat through the heat exchange piece and cools down, and flows out from the air outlet; the heat exchange medium enters the first cavity from the liquid inlet hole 1a, and after being split by the splitting piece, part of the heat exchange medium flows into the drainage channel, and flows into the second cavity through the drainage channel to absorb the heat of the heat exchange piece; the other part of heat exchange medium flows to the liquid supply hole, flows out of the second cavity from the liquid supply hole, is conveyed to the heating component of the multi-stage compressor for cooling, flows back into the second cavity from the backflow hole after cooling, is discharged from the liquid discharge hole 1b in a concentrated manner, and is conveyed to corresponding heat utilization equipment for completing waste heat recycling.
The shunt piece is a shunt joint in the prior art, and the shunt joint is provided with an input end and at least two output ends; the split joint in the embodiment is a four-way joint 3, which is provided with an input end and three output ends, wherein the input end of the four-way joint 3 is connected with a liquid inlet 1a through a pipeline, one of the output ends of the four-way joint 3 conveys heat exchange medium to a drainage channel, and the other two output ends of the four-way joint 3 are connected with liquid supply holes in a one-to-one correspondence through pipelines; the heat exchange medium enters the four-way joint 3 from the input end of the four-way joint 3, and flows out from three output ends of the four-way joint 3 after being split.
Further, a water pump 4 is further arranged in the first chamber, the input end of the water pump 4 is connected with the liquid inlet 1a through a pipeline, and the output end of the water pump 4 is connected with the input end of the split joint; the heat exchange medium flows into the water pump 4 from the input end of the water pump 4, flows out from the output end of the water pump 4 after being pressurized by the water pump 4, flows into the split joint through the input end of the split joint, and flows out from the output ends of the split joint after being split by the split joint; the heat exchange medium can be pressurized by arranging the water pump 4 so as to offset the pressure reduction after the heat exchange medium is shunted, and meanwhile, the heat exchange medium cannot be conveyed to the corresponding heat-generating component heat dissipation structure due to the fact that the partial conveying pipeline is insufficient in longer pressure is avoided.
At least one second partition board 5 is arranged in the second chamber, the second partition board 5 divides the inner space of the second chamber into at least two heat exchange cavities which are arranged side by side, and the number of the heat exchange cavities corresponds to the number of compression stages of the multistage compressor; the second partition board 5 is provided with through holes which are communicated with two adjacent heat exchange cavities, so that heat exchange media after heat exchange can circulate among the heat exchange cavities and are concentrated at the liquid discharge holes 1b of the shell 1; one end of each heat exchange cavity in the length direction forms an air inlet on one side of the shell 1, the other end of each heat exchange cavity in the length direction forms an air outlet on the opposite side of the shell 1, the air inlet is used for being connected with the air outlet end of one stage of compression part 11a of the multi-stage compressor, and the air outlet is used for being connected with the air inlet end of the next stage of compression part 11a of the multi-stage compressor; each heat exchange cavity is correspondingly provided with a heat exchange piece, the heat exchange piece can exchange heat and cool the compressed gas entering from the air inlet in the heat exchange cavity, the compressed gas after heat exchange and cooling is discharged through the air outlet and enters the next-stage compression part 11a of the multistage compressor to compress again, so that the compressed gas is compressed step by step and dissipates heat until the compressed gas discharged by the last-stage compression part 11a of the multistage compressor is subjected to heat exchange and cooling through the heat exchange piece, and then is discharged from the air outlet and conveyed to corresponding gas utilization equipment to finish waste heat recycling.
Specifically, in this embodiment, the multi-stage compressor is a two-stage compressor, which can perform two-stage compression on gas, and in this embodiment, the second partition board 5 is illustrated by taking one block as an example, the first partition board 2 is located in the middle of the second chamber, the second partition board 5 is parallel to the first side board, one end of the second partition board 5 in the length direction is connected with the second side board, and the other end of the second partition board 5 in the length direction is connected with the fourth side board, so as to divide the second chamber into two mutually independent heat exchange cavities, which are named as a first heat exchange cavity and a second heat exchange cavity for convenience of description; one end of the first heat exchange cavity in the length direction forms a first air inlet 1c on the second side plate, the other end of the first heat exchange cavity in the length direction forms a first air outlet 1d on the fourth side plate, one end of the second heat exchange cavity in the length direction forms a second air inlet 1e on the second side plate, and the other end of the second heat exchange cavity in the length direction forms a second air outlet 1f on the fourth side plate; the first air inlet 1c is connected with the air outlet end of the primary compression part 11a of the secondary compressor through a pipeline, the first air outlet 1d is connected with the air inlet end of the secondary compression part 11a of the secondary compressor through a pipeline, the second air inlet 1e is connected with the air outlet end of the secondary compression part 11a of the secondary compressor through a pipeline, and the second air outlet 1f is used for discharging compressed air after secondary compression.
During implementation, gas enters a first-stage compression part 11a of a second-stage compressor for first-stage compression, enters a first heat exchange cavity from a first air inlet 1c after the first-stage compression is completed, is discharged from a first air outlet 1d after heat exchange and temperature reduction are carried out through a heat exchange piece in the first heat exchange cavity, enters the second-stage compression part 11a of the second-stage compressor along a pipeline for second-stage compression, enters a second heat exchange cavity from a second air inlet 1e after the second-stage compression is completed, and is discharged from a second air outlet 1f to be conveyed to corresponding gas utilization equipment through a pipeline after heat exchange and temperature reduction are carried out through a heat exchange piece in the second heat exchange cavity.
In this embodiment, the drainage channel includes a converging groove 2a disposed on the top surface of the first separator 2, where the converging groove 2a is opposite to the top of the heat exchange member in each heat exchange cavity, and the bottom of the converging groove 2a is provided with a plurality of liquid permeable holes 2b penetrating the bottom surface of the first separator 2; when the heat exchange medium flows into the converging groove 2a, the heat exchange medium is split into a plurality of liquid flows through the liquid penetrating holes 2b on the bottom of the converging groove 2a, so that the contact area between the heat exchange medium and a heat exchange piece is increased, and the heat exchange efficiency is improved.
In the embodiment, the heat exchange pieces are heat exchange tube groups, and each heat exchange cavity is correspondingly provided with one heat exchange tube group; the heat exchange medium flows into the heat exchange cavity through the drainage channel, contacts with the outer surface of the heat exchange tube group in the heat exchange cavity, absorbs heat on the heat exchange tube group, is discharged from the liquid discharge hole 1b on the shell 1, and is conveyed to corresponding heat utilization equipment.
Specifically, each heat exchange tube group comprises two opposite sealing plates and a plurality of inner fin heat exchange tubes 6 arranged between the two sealing plates, the inner fin heat exchange tubes 6 are parallel to the flowing direction of compressed gas, and a plurality of inner fins are arranged inside the inner fin heat exchange tubes 6 at intervals along the axial direction of the inner fin heat exchange tubes; for ease of description, one of the plates is designated as a first plate 7 and the other plate is designated as a second plate 8; when the heat exchange tube group is arranged in the heat exchange cavity, the first sealing plate 7 seals the air inlet on the shell 1, the second sealing plate 8 seals the air outlet on the shell 1, and a sealed heat exchange cavity is formed so as to prevent heat exchange medium flowing into the heat exchange cavity from flowing out of the air inlet and the air outlet; the first sealing plate 7 is provided with air inlets correspondingly communicated with the air inlet ends of the inner fin heat exchange tubes 6, the second sealing plate 8 is provided with air outlets correspondingly communicated with the air outlet ends of the inner fin heat exchange tubes 6, so that compressed air enters the heat exchange tubes from the air inlets, and the compressed air after heat exchange flows out from the air outlets; the plurality of inner fin heat exchange tubes 6 divide the inflowing compressed gas into a plurality of air flows, so that the contact area between the compressed gas and the heat exchange tube group can be increased, and the heat exchange and cooling efficiency can be improved.
Further, the inner fin heat exchange tubes 6 are arranged in parallel at intervals, and gaps for the heat exchange medium to pass through are formed between the inner fin heat exchange tubes 6, so that the contact area between the inner fin heat exchange tubes 6 and the heat exchange medium is increased, and the heat exchange efficiency is improved.
Example two
Referring to fig. 5 and 6, the difference between the technical solutions of the present embodiment and the first embodiment is that the heat exchange member in the present embodiment is a heat exchange tube through which a heat exchange medium can be introduced, one end of the heat exchange tube is a liquid inlet end and is connected with the drainage channel on the first partition board 2, the other end of the heat exchange tube is a liquid outlet end and is connected with the liquid discharge hole 1b on the housing 1, and the backflow hole is connected with the liquid outlet end of the heat exchange tube in parallel through a pipeline; the heat exchange tubes extend in a roundabout manner between the heat exchange chambers and repeatedly pass through the second partition plate 5 to form a plurality of tube sections, and a gap is formed between two adjacent tube sections, so that compressed gas can circulate in the gap.
Specifically, in this embodiment, the drainage channel is a converging hole 2c disposed on the first partition board 2, the top end of the converging hole 2c penetrates through the top surface of the first partition board 2, and the bottom end of the converging hole 2c penetrates through the bottom surface of the first partition board 2; the top end of the converging hole 2c is connected with one flow distributing end of the flow distributing piece through a pipeline, the bottom end of the converging hole 2c is connected with the liquid inlet end of the heat exchange tube, and the liquid outlet end of the heat exchange tube is connected with the liquid outlet hole 1b on the shell 1; the heat exchange tube extends roundabout between the first heat exchange cavity and the second heat exchange cavity and passes through the second partition board 5, the heat exchange tube forms a plurality of straight sections parallel to each other and a bending section connecting two adjacent straight sections, the straight sections of the heat exchange tube are parallel to the width direction of the shell 1, and gaps are reserved between the two adjacent straight sections and between the two adjacent bending sections.
In specific implementation, compressed gas subjected to primary compression enters a first heat exchange cavity from a first air inlet 1c, is discharged from a first air outlet 1d and enters a secondary compression part 11a of a secondary compressor along a pipeline for secondary compression after being subjected to heat exchange and temperature reduction through a pipe section of a heat exchange pipe positioned in the first heat exchange cavity, enters a second heat exchange cavity from a second air inlet 1e after being subjected to secondary compression, is discharged from a second air outlet 1f and is conveyed to corresponding gas utilization equipment through a pipeline after being subjected to heat exchange and temperature reduction through a pipe section of a heat exchange pipe positioned in the second heat exchange cavity; the heat exchange medium enters the heat exchange tube from the liquid inlet end of the heat exchange tube and flows along the heat exchange tube to the liquid outlet end of the heat exchange tube, and absorbs heat transferred to the heat exchange tube by compressed gas in the flowing process; the heat exchange medium flows from the return hole to the liquid outlet end of the heat exchange tube along the pipeline, is intensively discharged from the liquid discharge hole 1b and is conveyed to corresponding heat utilization equipment through the pipeline.
Further, a plurality of outer fins 9 are arranged on the outer surface of the heat exchange tube at intervals, when the compressed gas contacts with the outer fins 9, the outer fins 9 absorb heat of the compressed gas and conduct the heat to the heat exchange tube, and the heat exchange medium circulates in the heat exchange tube and absorbs heat on the heat exchange tube to complete heat exchange; the contact area with compressed gas can be increased through the outer fins 9, so that the heat exchange cooling efficiency is improved.
Compared with the heat exchange tube group in the first embodiment, in the second embodiment, only one heat exchange tube is adopted, so that heat exchange can be carried out on each heat exchange cavity, heat exchange medium circulates in the heat exchange tubes, heat exchange medium leakage is effectively avoided, an air inlet and an air outlet on the shell 1 are not required to be closed, the first partition plate 2 is only required to be provided with the flow converging hole 2c, a flow converging groove and a water permeable hole are not required to be arranged, the structure is simplified, meanwhile, the heat exchange medium and the heat exchange tubes can be guaranteed to be in full contact, and the situation that the heat exchange tubes cannot cover the area of the heat exchange medium is avoided; the heat exchange tube adopts a roundabout extending structure and is provided with a plurality of tube sections, so that a plurality of gaps for circulating compressed gas can be formed, the inflowing compressed gas is divided into a plurality of air flows, and the heat exchange efficiency is further improved.
Example III
Referring to fig. 7 to 9, a third embodiment provides a cooling-waste heat recovery system of a multistage compressor, which comprises a multistage compressor body 11, a control cabinet 10, and a cooling-waste heat recovery device, wherein the compressor body 11 comprises at least two stages of compression parts 11a and a motor part 11b for driving the compression parts 11a to compress gas, and each stage of compression part 11a is provided with an air inlet and an air outlet; the motor part 11b is provided with a motor cover, heat generated during motor operation is conducted to the motor cover, the motor cover is provided with a heat dissipation structure, the heat dissipation structure is a liquid cooling channel 11c which is arranged in the motor cover and can circulate heat exchange media, one end of the liquid cooling channel 11c is provided with a liquid inlet port on the motor cover, and the other end of the liquid cooling channel 11c is provided with a liquid outlet port on the motor cover; the control cabinet 10 comprises a cabinet body, wherein a heat radiation structure is arranged in the cabinet body, the heat radiation structure is an electric device mounting plate 12 arranged in the cabinet body, a plurality of electric devices are mounted on the electric device mounting plate 12, heat generated by the electric devices is conducted to the electric device mounting plate 12, a heat radiation channel 12a capable of circulating a heat exchange medium is arranged in the electric device mounting plate 12, one end of the heat radiation channel 12a is provided with a liquid inlet on the electric device mounting plate 12, and the other end of the heat radiation channel 12a is provided with a liquid outlet on the electric device mounting plate 12; the cooling-waste heat recovery device in this embodiment is the cooling-waste heat recovery device in the first embodiment or the second embodiment, wherein one liquid supply hole on the cooling-waste heat recovery device is connected with the liquid inlet on the motor cover through a pipeline, and the other liquid supply hole penetrates into the cabinet body through a pipeline to be connected with the liquid inlet of the electric device mounting plate 12; one reflow hole of the cooling-waste heat recovery device is connected with a liquid outlet interface of the motor cover through a pipeline, and the other reflow hole penetrates into the cabinet body through a pipeline to be connected with a liquid outlet of the electric device mounting plate 12.
The multistage compressor in the present embodiment is a two-stage compressor, and has a first-stage compression portion 11a and a second-stage compression portion 11a, which can perform secondary compression on gas; in specific implementation, compressed gas subjected to primary compression enters a first heat exchange cavity of a cooling-waste heat recovery device from a first air inlet 1c, is discharged from a first air outlet 1d after being subjected to heat exchange and cooling by a heat exchange piece positioned in the first heat exchange cavity, enters a secondary compression part 11a of a secondary compressor along a pipeline for secondary compression, enters a second heat exchange cavity from a second air inlet 1e after the secondary compression is finished, is discharged from a second air outlet 1f after being subjected to heat exchange and cooling by a heat exchange piece positioned in the second heat exchange cavity, and is conveyed to corresponding gas utilization equipment by a pipeline; the heat exchange medium enters the first cavity from the liquid inlet hole 1a of the cooling-waste heat recovery device, is split into three parts through the splitting piece, flows to the drainage channel, and flows into the second cavity through the drainage channel to absorb heat of the heat exchange piece; the second part of heat exchange medium is conveyed into a liquid cooling channel 11c of a motor cover of the compressor, absorbs heat on the motor shell and then flows back into the second cavity; the third part of heat exchange medium is conveyed into the heat dissipation channel 12a of the electric device mounting plate 12 of the control cabinet 10, and the heat on the electric device mounting plate 12 is absorbed and then flows back into the second cavity; finally, the waste heat is intensively discharged from the liquid discharge hole 1b of the cooling-waste heat recovery device and is conveyed to corresponding heat utilization equipment to complete waste heat recovery.
Referring to fig. 7, the cooling-waste heat recovery system of the multistage compressor in this embodiment forms three pipelines for circulating heat exchange medium, specifically:
main pipeline: the heat exchange medium sequentially flows through a liquid inlet 1a of the cooling-waste heat recovery device, a first output end of the flow dividing piece, a drainage channel of the first partition board 2, the heat exchange piece and a liquid outlet 1b of the cooling-waste heat recovery device;
a first branch: the liquid cooling channel 11c of the motor cover and the liquid discharging hole 1b of the cooling-waste heat recovery device flow through the second output end of the flow dividing piece in sequence;
a second branch: from the third outlet end of the shunt member, flows through the heat dissipation channel 12a of the electric device mounting plate 12 and the liquid discharge hole 1b of the cooling-waste heat recovery device in order.
Through the main pipeline, a new heat exchange piece can be additionally arranged outside the compressor body to strengthen heat dissipation of the multistage compressor; besides, the heat exchange part is additionally provided with the independent heat exchange parts, and the heat exchange part is compatible with the heat dissipation part of the compressor body through the pipeline design of the first branch and the second branch, so that after heat exchange is carried out by respectively flowing through the three pipelines, heat exchange media can be concentrated and converged to unified heat utilization equipment for waste heat recovery. Therefore, in the cooling-waste heat recovery system of the multistage compressor in this embodiment, by forming the three pipelines, the cooling-waste heat recovery can be performed on compressed gas, the motor part 11b of the multistage compressor and electric devices inside the control cabinet 10 in a concentrated manner, so that resources are saved, and a liquid supply device for conveying heat exchange media is not required to be independently arranged for the heat dissipation structure of each heating component, so that the whole structure of the multistage compressor is more compact, the volume is smaller, and the space occupation is reduced.
Further, the liquid cooling channel 11c of the motor cover is spiral, so that the heat exchange area of the motor cover is increased, and the cooling effect is improved.
Further, the heat dissipation channels 12a of the electric device mounting plate 12 are arranged in an S-shaped roundabout manner at the electric device mounting position, and the heat dissipation channels 12a between two adjacent electric devices are arranged in a straight line, so that not only can the heat exchange and the temperature reduction of each electric device be carried out, but also the length of the heat dissipation channels 12a between the two adjacent electric devices can be shortened, the stroke of a heat exchange medium is correspondingly reduced, the heat exchange medium can flow between each electric device rapidly, and the heat exchange efficiency is improved.
It should be noted that the heat exchange medium in the first to third embodiments is water, cooling liquid or cooling oil, and those skilled in the art may specifically select according to the actual cooling effect of the compressed gas and the heat generating component.
Example IV
The embodiment also provides a multistage compressor, which comprises a cooling-waste heat recovery system of the multistage compressor in the third embodiment.
The above-mentioned embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and all kinds of modifications, substitutions or alterations made to the above-mentioned structures of the present invention according to the above-mentioned general knowledge and conventional means of the art without departing from the basic technical ideas of the present invention shall fall within the scope of the present invention.
Claims (11)
1. The utility model provides a multistage compressor's cooling-waste heat recovery device which characterized in that, including having the shell that the cavity can hold heat transfer piece and reposition of redundant personnel spare, the reposition of redundant personnel spare includes: an input, a first output and a second output; the heat exchange medium enters the inside of the flow dividing piece from the input end of the flow dividing piece and flows out from the output end of the flow dividing piece after being divided; and after the heat exchange is completed from the second output end to the heat dissipation structure of the heating component of the multistage press, the other part of the heat exchange medium flows back to the inside of the shell.
2. The cooling-waste heat recovery device of the multistage compressor according to claim 1, wherein the housing is provided with a liquid inlet, and the heat exchange medium sequentially flows through the liquid inlet, the input end of the flow dividing member, the first output end of the flow dividing member and the heat exchange member;
the shell is provided with a liquid supply hole and a backflow hole, the shunted heat exchange medium sequentially flows through the liquid supply hole and a heat dissipation structure of a heating component of the multi-stage press from a second output end of the shunt piece, and after heat exchange treatment is carried out through the heat dissipation structure, the heat exchange medium flows back to the cooling-waste heat recovery device through the backflow hole;
the shell is provided with liquid discharge holes, and the heat exchange medium subjected to heat exchange by the heat exchange piece and the heat exchange medium subjected to heat exchange by the heat dissipation structure are intensively discharged through the liquid discharge holes and are conveyed to corresponding heat utilization equipment.
3. The cooling-waste heat recovery device of the multistage compressor according to claim 1, wherein a first partition plate is arranged in the shell, the first partition plate divides an inner cavity of the shell into a first cavity for accommodating the flow dividing member and a second cavity for accommodating the heat exchanging member, a drainage channel is formed in the first partition plate, and a part of heat exchanging medium which is divided by the flow dividing member flows into the second cavity from the first cavity through the drainage channel to exchange heat with the heat exchanging member.
4. The cooling-heat recovery device of a multistage compressor according to claim 3, wherein at least one second partition plate is provided in the second chamber, and the second partition plate partitions an inner space of the second chamber into at least two heat exchange chambers arranged side by side.
5. The cooling-heat recovery device of a multistage compressor according to claim 4, wherein the heat exchanging member is at least two heat exchanging tube groups, each of which is accommodated in one heat exchanging chamber; the heat exchange tube group comprises two opposite sealing plates and a plurality of inner fin heat exchange tubes arranged between the two sealing plates, the inner fin heat exchange tubes are parallel to the flowing direction of the compressed gas, and the compressed gas can circulate inside the inner fin heat exchange tubes.
6. The cooling-waste heat recovery device of the multistage compressor according to claim 5, wherein the drainage channel comprises a converging groove arranged on the top surface of the first partition plate, the converging groove is opposite to the top of the heat exchange piece in each heat exchange cavity, and a plurality of liquid permeable holes penetrating through the bottom surface of the first partition plate are formed in the bottom of the converging groove and pass through the converging groove.
7. The cooling-waste heat recovery device of the multistage compressor according to claim 4, wherein the heat exchange member is a heat exchange tube into which a heat exchange medium can be introduced, a liquid inlet end of the heat exchange tube is connected with a drainage channel on the first partition plate, a liquid outlet end of the heat exchange tube is connected with a liquid discharge hole on the shell, and the backflow hole is connected with the liquid outlet end of the heat exchange tube in parallel through a pipeline; the heat exchange tubes extend in a roundabout manner between the heat exchange cavities and pass through the second partition plate to form a plurality of tube sections, and gaps capable of circulating compressed gas are formed between two adjacent tube sections.
8. The cooling-waste heat recovery device of the multistage compressor according to claim 7, wherein the drainage channel is a converging hole arranged on the first partition plate, the top end of the converging hole is connected with one diverging end of the diverging piece through a pipeline, the bottom end of the converging hole is connected with the liquid inlet end of the heat exchange tube, and the liquid outlet end of the heat exchange tube is connected with the liquid outlet hole on the shell.
9. A cooling-waste heat recovery system of a multistage compressor, characterized by comprising a compressor body, a control cabinet, and a cooling-waste heat recovery device of the multistage compressor according to any one of claims 1 to 8; the compressor body comprises a motor part, and the motor part is provided with a motor cover; the cooling-waste heat recovery device is in heat exchange connection with a heat dissipation structure arranged on the motor cover.
10. The cooling-waste heat recovery system of the multistage compressor according to claim 9, wherein the heat dissipation structure arranged in the control cabinet is an electric device mounting plate for mounting electric devices, heat dissipation channels are arranged in the electric device mounting plate, and the heat dissipation channels between two adjacent electric devices are arranged in a straight line.
11. A multistage compressor comprising the cooling-heat recovery system of the multistage compressor according to claim 9 or 10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311490115.9A CN117231472A (en) | 2023-11-10 | 2023-11-10 | Cooling-waste heat recovery device and system of multistage compressor and multistage compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311490115.9A CN117231472A (en) | 2023-11-10 | 2023-11-10 | Cooling-waste heat recovery device and system of multistage compressor and multistage compressor |
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| CN117231472A true CN117231472A (en) | 2023-12-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204438363U (en) * | 2015-02-05 | 2015-07-01 | 珠海格力电器股份有限公司 | Air-conditioning and heat recovery mode converter thereof |
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