CN207905853U - The system that reverse-flow mine return air directly heats fresh air - Google Patents
The system that reverse-flow mine return air directly heats fresh air Download PDFInfo
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- CN207905853U CN207905853U CN201721854392.3U CN201721854392U CN207905853U CN 207905853 U CN207905853 U CN 207905853U CN 201721854392 U CN201721854392 U CN 201721854392U CN 207905853 U CN207905853 U CN 207905853U
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- air
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- fresh air
- preheating
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Abstract
The utility model is related to a kind of systems that reverse-flow mine return air directly heats fresh air, including return air pit shaft (1), mine return air conveying mechanism, fresh air conveying mechanism and the Intake shaft (16) set gradually, the mine return air conveying mechanism includes return airway (2), mine main ventilator (3), connecting tube (4), threeway (5), flapper (6) and preheating mechanism (7), and one end of the return airway (2) is connected to return air pit shaft.The utility model has the advantages that：Simple and reliable, return air collateral resistance is low, overcomes resistance by mine main ventilator, without additional investment wind turbine, fresh air overcomes flow resistance to realize that cross-counterflow heat exchange, system energy consumption are low, the thermal efficiency is high, low cost, and floor space is small, realize Winter heat supply wind summer for cool breeze, mass energy can be saved, and operating cost is low, it is environmentally friendly, the pollution to environment can be effectively reduced, the economic benefit and social benefit promoted the use of are all extremely prominent.
Description
Technical field
The utility model is related to a kind of systems that reverse-flow mine return air directly heats fresh air.
Background technology
Coal mine is a huge heat storage, contains abundant geothermal energy resources.Into coal mine air constantly with the lane of coal mine
Road, electromechanical equipment, water drenching etc. carry out heat exchange, and finally, the ground temperature of air themperature and coal mine reaches balance.The ground temperature of coal mine is basic
It is constant, cause the annual temperature substantially constant of coal mine return air, is influenced very little by outside air temperature.Another side underground electromechanical equipment dissipates
Hot (the 20% of general electromechanical equipment power), coal dust oxidizing heat evolution, underground water-cooled, personnel's heat dissipation etc. enter mine return air
In.So coal mine return air is a kind of more good residual heat resources of stabilization.Winter mine return air temperature is 18 DEG C, relative humidity
It is 85% or so.
Conventional at present is that the heat of mine return air is extracted in conjunction with heat pump techniques using technology, from the evaporator of heat pump unit
The condensation side of the draw heat from mine return air, heat pump unit discharges heat, and the supply water temperature of condensation side is 45~60 DEG C.The skill
The investment of art path system complexity is high, and system needs to consume the electric energy for being equivalent to heat capacity 1/4~1/3, and operating cost is high, and
It is often led since system flow is suspended or flow is unsmooth since system needs water cycle to carry thermal energy cold or severe cold area
Cause system pipeline, equipment icing bursting by freezing pipe-line equipment that equipment effect is caused to cannot be guaranteed.
The heat supply of coal mining enterprise has the characteristics that itself, and the antifreeze load of pitshaft typically constitutes from total mine thermic load 40%-
60%, according to《Safety regulations in coal mine》、《Mine design specification》Equal related requests, the well wind-warm syndrome that enters that mine enters downcast should be big
In 2 DEG C.Fresh air is heated to 2~10 DEG C or more and is used for by the fresh air that -30~-4 DEG C are directly heated using 18 DEG C or so mine return airs
Antifreeze mine shaft is entirely feasible in theory.
The technology of civil buildings industry exhaust airflow recuperation of heat heating fresh air traditional at present is to utilize runner heat exchanger
Heat exchange is exchanged heat using metal (more aluminium foils or stainless sheet steel) or moisture-inhibiting film plate type (plate wing) heat exchanger, the finned use of profit
Hot-pipe type heat-exchanger heat exchange etc..But these heat transmission equipments can not use in the system that mine return air heats fresh air, mainly have
Following reason：
1, mine return air amount is big, generally in 60~300m3/ s, i.e., 21.6~1,080,000 m3/ h, traditional heat recovering heat exchanger
General air quantity is in 300~10000m3/ h will need more heat exchange in parallel, and need to build complicated company according to traditional heat exchangers
It gives a dinner for a visitor from afar.
2, these heat exchangers using when both sides runner be required to overcome larger circulating resistance, coal mine main ventilator can not
Burden influences ventilation safety.General Coal Mine Ventilator can only provide the pressure head not higher than 200Pa, if in the main ventilation of mine return air
Mire ventilation safety will be influenced for heat exchanging ventilator by being installed in series.
3, contain a large amount of dust and impurity in mine return air, traditional air heat recovering heat exchanger is narrow due to heat exchange runner
Narrow, dust stratification is serious in heat exchange runner, can not be suitable for the heat transfer requirements of mine return air.
4, nearby place is limited for mine main ventilator, if being taken up a large area using traditional heat recovering heat exchanger, is divulging information
Machine nearby can not install placement.
Exist in implementation process in view of this, the utility model people directly heats fresh air for existing utilization mine return air
The problem of, it has made intensive studies and tests, thus this programme generates.
Invention content
To overcome the deficiencies of existing technologies, what the utility model provided that a kind of reverse-flow mine return air directly heats fresh air is
System, the technical solution of the utility model are：
The system that reverse-flow mine return air directly heats fresh air, including the return air pit shaft (1), the mine return air that set gradually are defeated
It includes return airway (2), mine to send mechanism, fresh air conveying mechanism and Intake shaft (16), the mine return air conveying mechanism
Main fan (3), connecting tube (4), threeway (5), flapper (6) and preheating mechanism (7), one end of the return airway (2) with
Return air pit shaft is connected to；Mine main ventilator (3) is installed in the return airway, the end face of connecting tube (4) one end is circle, with
The other end of the return airway is connected to, and the end face of the other end is rectangular, is connected to the air inlet of threeway (5), in the threeway
Interior rotation is equipped with a flapper (6), the dynamic cooperation of two air outlets of the flapper (6) and threeway；The preheating
Mechanism (7) includes preheating shell and the economizer bank (7-7) in preheating shell and partition board (7-3), preheats a left side for shell
End forms the return air preheating main air duct import (7-4) being connected to an air outlet of threeway, and right end is formed and fresh air conveying mechanism
The return air preheating main air duct outlet (7-5) of fresh inlet air duct (8) connection is formed in the upper end of the preheating shell by fresh air preheating
Ducting outlet (7-3) by air duct import (7-2) and fresh air preheating, the partition board (7-3) are located at air duct import by fresh air preheating
By (7-2) and fresh air preheating between ducting outlet (7-1), air duct (7- among fresh air preheating is formed on the bottom in the preheating shell
6), the air intake of air duct import (7-2) is connected to Leads to new breeze air duct (17) by the fresh air preheating.
The fresh air conveying mechanism includes heat exchanger (9) and fresh air conveying air duct (13), the side shape of the heat exchanger (9)
At fresh inlet air duct (8), which is connected to the Leads to new breeze air duct (17), in the heat exchanger
Top is provided with air duct (10), lower part among new air heat-exchange and is provided with heat exchanger fresh air outlet conduits (12), the heat exchanger fresh air
The air intake that the outlet air end of outlet conduits (12) conveys air duct (13) with fresh air is connected to, which conveys the outlet air end of air duct (13)
It is connected to Intake shaft (16)；Fresh air conveying fan (14) and fresh air non-return are installed successively in fresh air conveying air duct (13)
Valve (15).
Heat exchanger tube (11) in the heat exchanger be it is several, it is horizontally disposed, the heat exchanger plates of planar are integrally formed.
Heat exchanger tube (11) in the heat exchanger is several stainless steel tubes or aluminum pipe, and each heat exchanger tube is arranged in zigzag.
The heat exchanger tube be it is several, be communicated on the heat exchanger shell of Leads to new breeze air duct (17) opposite side it is new
Wind convey air duct (13), the fresh air convey air duct (13) be located at heat exchange shell middle part, the both ends of each heat exchanger tube with change
Spacing is formed between hot device shell.
The section of heat exchanger tube (11) in the heat exchanger is rectangular, round or ellipse.
The heat exchanger tube is integrally arranged in the shape of a spiral, and oval groove is covered on the tube body of the heat exchanger tube.
The utility model has the advantages that：Simple and reliable, return air collateral resistance is low, overcomes resistance by mine main ventilator, is not necessarily to
Additional investment wind turbine, fresh air overcome flow resistance to realize cross-counterflow heat exchange, and system energy consumption is low, and the thermal efficiency is high, low cost, takes up an area
Area is small, realizes that Winter heat supply wind summer for cool breeze, can save mass energy, and operating cost is low, environmentally friendly, can have
Effect reduces the pollution to environment, and the economic benefit and social benefit promoted the use of are all extremely prominent.
Description of the drawings
Fig. 1 is the first embodiment agent structure schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of preheating mechanism in Fig. 1.
Fig. 3 is second of embodiment agent structure schematic diagram of the utility model.
Fig. 4 is the third embodiment agent structure schematic diagram of the utility model.
Fig. 5 is that the horizontal positioned fresh air inlet and outlet front-rear direction mounting structure of first embodiment heat exchanger of the utility model shows
It is intended to.
Fig. 6 is that the horizontal positioned fresh air inlet and outlet upper and lower directions mounting structure of first embodiment heat exchanger of the utility model shows
It is intended to.
Fig. 7 is that the second embodiment heat exchanger of the utility model is horizontally arranged the mounting structure signal up and down of fresh air inlet and outlet
Figure.
Fig. 8 is that the second embodiment heat exchanger of the utility model is horizontally arranged fresh air inlet and outlet left and right mounting structure signal
Figure.
Specific implementation mode
The utility model is further described with reference to specific embodiment, and the advantages of the utility model and feature will be with
Description and it is apparent.But examples are merely exemplary for these, does not constitute any restrictions to the scope of the utility model.
It will be understood by those skilled in the art that can be to the utility model skill under the spirit and scope without departing from the utility model
The details and form of art scheme are modified or are replaced, but these modifications and replacement each fall within the scope of protection of the utility model
It is interior.
Referring to Fig. 1 to Fig. 8, the utility model is related to a kind of systems that reverse-flow mine return air directly heats fresh air, including
Return air pit shaft 1, mine return air conveying mechanism, fresh air conveying mechanism and the Intake shaft 16 set gradually, the mine return air
Conveying mechanism includes return airway 2, mine main ventilator 3, connecting tube 4, threeway 5, flapper 6 and preheating mechanism 7, the return air
The one end in air duct 2 is connected to return air pit shaft 1, and mine main ventilator 3, the end of 4 one end of connecting tube are equipped in the return airway
Face is circle, be connected to the other end of the return airway, the end face of the connecting tube other end be it is rectangular, with threeway 5 into
Air port is connected to, and what is rotated in the threeway is equipped with a flapper 6, and two air outlets of the flapper 6 and threeway, which move, matches
It closes；The preheating mechanism 7 includes preheating shell and the economizer bank 7-7 in preheating shell and partition board 7-3, preheats shell
The left end of body forms the return air preheating main air duct import 7-4 being connected to an air outlet of threeway, and right end is formed and fresh air conveyer
The return air preheating main air duct that the fresh inlet air duct 8 of structure is connected to exports 7-5, is formed by fresh air preheating in the upper end of the preheating shell
Ducting outlet 7-1 by air duct import 7-2 and fresh air preheating, the partition board 7-3 are located at by fresh air preheating air duct import 7-2 and newly
Between the other ducting outlet 7-1 of wind preheating, air duct 7-6 among fresh air preheating, the fresh air are formed on the bottom in the preheating shell
The air intake of the other air duct import 7-2 of preheating is connected to Leads to new breeze air duct 17.
The fresh air conveying mechanism includes heat exchanger 9 and fresh air conveying air duct 13, and the side of the heat exchanger 9 forms fresh air
Import air duct 8, the fresh inlet air duct 8 are connected to the Leads to new breeze air duct 17, the top in the heat exchanger be provided with
Air duct 10 among the new air heat-exchange of the heat exchanger tube connection of heat exchanger, lower part is provided with the heat exchanger being connected to the heat exchanger tube of heat exchanger
The outlet air end of fresh air outlet conduits 12, the heat exchanger fresh air outlet conduits 12 is connected to the air intake in fresh air conveying air duct 13, should
The outlet air end in fresh air conveying air duct 13 is connected to Intake shaft 16；Fresh air conveying is installed successively in fresh air conveying air duct 13
Wind turbine 14 and fresh air check-valves 15.
As shown in Figure 1, the heat exchanger tube of heat exchanger includes different distribution pattern, the heat exchanger tube in the heat exchanger is several
Stainless steel tube or aluminum pipe, it is horizontally disposed, the heat exchanger plates of planar are integrally formed.
As shown in figure 3, can also be that the heat exchanger tube 11 in the heat exchanger is several stainless steel tubes or aluminum pipe, each is changed
Heat pipe is arranged in zigzag.
As shown in figure 4, the heat exchanger tube be it is several, on the heat exchanger shell of 17 opposite side of Leads to new breeze air duct
Be communicated with fresh air conveying air duct 13, the fresh air convey air duct 19 be located at heat exchange shell middle part, the two of each heat exchanger tube 11
Spacing is formed between end and heat exchanger shell.
11 section of heat exchanger tube in the heat exchanger is rectangular, round or ellipse.
The heat exchanger tube is integrally arranged in the shape of a spiral, and oval groove is covered on the tube body of the heat exchanger tube.
As shown in figure 5, heat exchanger 9 is horizontal positioned, mine return air enters heat exchanger 9 by horizontal direction, and mine return air is changing
The pipe of heat pipe 11 is outer to carry out heat exchange with horizontal direction in the heat exchanger tube 11 that planar combines, and air is discharged by diffuser after heat exchange.
Fresh air enters heat exchanger by fresh inlet wind 8, in the Bottomhole pressure of heat exchanger tube 11, via behind air duct 10 among new air heat-exchange by new
Wind outlet conduits 12 are discharged.
As shown in fig. 6, heat exchanger 9 is horizontal positioned, mine return air enters heat exchanger 9 by horizontal direction, and mine return air is changing
The pipe of heat pipe 11 is outer to carry out heat exchange with vertical direction in the heat exchanger tube 11 that planar combines, and air is discharged by diffuser after heat exchange.
Fresh air enters heat exchanger by fresh inlet 8, in the Bottomhole pressure of heat exchanger tube 11, via behind air duct 10 among new air heat-exchange by fresh air
Outlet conduits 12 are discharged.
As shown in fig. 7, heat exchanger 9 is horizontal positioned, mine return air enters heat exchanger 9 by horizontal direction, and mine return air is changing
The outer heat exchanger tube 11 combined with the Z-shaped planar of vertical direction of the pipe of heat pipe 11 carries out heat exchange, is discharged into greatly by diffuser after heat exchange
Gas.Fresh air is discharged after heat exchange by fresh air outlet conduits 12 into heat exchanger in the Bottomhole pressure of heat exchanger tube 11 by fresh inlet 8.
As shown in figure 8, heat exchanger 9 is horizontal positioned, mine return air enters heat exchanger 9 by horizontal direction, and mine return air is changing
The outer heat exchanger tube 11 combined with the Z-shaped planar of horizontal direction of the pipe of heat pipe 11 carries out heat exchange, is discharged into greatly by diffuser after heat exchange
Gas.Fresh air is discharged after heat exchange by fresh air outlet conduits 12 into heat exchanger in the Bottomhole pressure of heat exchanger tube 11 by fresh inlet 8.
The operation principle of the utility model is：Mine return air enters ground air duct 2 by return air pit shaft 1, logical by mine master
Enter threeway 5 after wind turbine 3, heat exchange season activity baffle 6 is horizontal positioned, and mine return air enters preheating mechanism 7, in preheating mechanism 7
In, mine return air circulates in the flow-guiding channel that economizer bank 7-7 is formed, and heat exchanger 9 is entered after uniform water conservancy diversion, in heat exchanger
In 9, the arc-shaped runner being made of 11 outer wall of heat exchanger tube of heat exchanger is initially entered, mine return air is changed into vertical by bottom horizontal flow sheet
It is flowed up along the vertical run of 11 outer wall of heat exchanger tube composition after direct current is dynamic, 18 DEG C or so of the mine return air quilt in heat exchanger
Fresh air is cooled to 0~10 DEG C or so, and outside atmosphere is discharged into from the top of heat exchanger 9.Outdoor fresh air by Leads to new breeze air duct 17 into
Enter, heat exchanger fresh air is entered by the outlet of fresh air preheating main air duct after the heat exchanger tube heating of a part of preheated mechanism of mine return air
Import air duct 8, another part are directly entered fresh inlet air duct 8, and the fresh air of preheating and the fresh air that does not preheat are in fresh inlet wind
After being mixed in road 8, into being flowed in the pipe inner flow passage by several heat exchanger tubes 11, fresh air in heat exchanger tube with the mine outside heat exchanger tube
Heat exchange occurs for return air, and the fresh air heated enters air duct 10 among heat exchanger fresh air, from the air duct 10 of heat exchanger centre again
It is flowed in the pipe inner flow passage formed into several heat exchanger tubes 11, fresh air occurs further heat with the mine return air outside pipe in pipe and hands over
It changes, final fresh air is heated to 2~15 DEG C from -30~0 DEG C and is flowed out by the fresh air outlet conduits 12 of heat exchanger, is conveyed via fresh air
Intake shaft 16 is sent into after air duct 13, fresh air conveying fan 14, fresh air check-valves 15.
In place when conditions permit, heat exchanger 9 can also be horizontally arranged, and when being horizontally arranged, cancellation is formed by heat exchanger tube 11
Arc-shaped mine return air runner, the combination of heat exchanger tube 11 forms the arrangement of laterally or vertically horizontal run, heat exchanger 9
Fresh inlet air duct 8 at install diffuser, by mine return air, upward vertical turn enters heat exchanger in diffuser.
Claims (7)
1. the system that reverse-flow mine return air directly heats fresh air, which is characterized in that including set gradually return air pit shaft (1),
Mine return air conveying mechanism, fresh air conveying mechanism and Intake shaft (16), the mine return air conveying mechanism include return air wind
Road (2), mine main ventilator (3), connecting tube (4), threeway (5), flapper (6) and preheating mechanism (7), the return airway
(2) one end is connected to return air pit shaft；Mine main ventilator (3), the end of connecting tube (4) one end are installed in the return airway
Face is circle, is connected to the other end of the return airway, and the end face of the other end is rectangular, is connected with the air inlet of threeway (5)
Logical, what is rotated in the threeway is equipped with a flapper (6), the dynamic cooperation of two air outlets of the flapper (6) and threeway；
The preheating mechanism (7) includes preheating shell and the economizer bank (7-7) in preheating shell and partition board (7-3), in advance
The left end of hot shell forms the return air preheating main air duct import (7-4) being connected to an air outlet of threeway, and right end is formed and fresh air
The return air preheating main air duct outlet (7-5) of fresh inlet air duct (8) connection of conveying mechanism, forms in the upper end of the preheating shell
Air duct import (7-2) and fresh air preheating side ducting outlet (7-1), the partition board (7-3) are located at fresh air preheating by fresh air preheating
By other air duct import (7-2) and fresh air preheating between ducting outlet (7-1), the bottom in the preheating shell is formed in fresh air preheating
Between air duct (7-6), the air intake of air duct import (7-2) is connected to Leads to new breeze air duct (17) by the fresh air preheating.
2. the system that reverse-flow mine return air according to claim 1 directly heats fresh air, which is characterized in that described is new
Wind conveying mechanism includes heat exchanger (9) and fresh air conveying air duct (13), and the side of the heat exchanger (9) forms fresh inlet air duct
(8), which is connected to the Leads to new breeze air duct (17), and the top in the heat exchanger is provided with fresh air
The intermediate air duct (10) of heat exchange, lower part are provided with heat exchanger fresh air outlet conduits (12), the heat exchanger fresh air outlet conduits (12)
The air intake that outlet air end conveys air duct (13) with fresh air is connected to, which conveys the outlet air end and Intake shaft (16) of air duct (13)
Connection；Fresh air conveying fan (14) and fresh air check-valves (15) are installed successively in fresh air conveying air duct (13).
3. the system that reverse-flow mine return air according to claim 2 directly heats fresh air, which is characterized in that the heat exchange
Heat exchanger tube (11) in device be it is several, it is horizontally disposed, the heat exchanger plates of planar are integrally formed.
4. the system that reverse-flow mine return air according to claim 2 or 3 directly heats fresh air, which is characterized in that described
Heat exchanger tube (11) in heat exchanger is several stainless steel tubes or aluminum pipe, and each heat exchanger tube is arranged in zigzag.
5. the system that reverse-flow mine return air according to claim 2 directly heats fresh air, which is characterized in that described changes
Heat pipe be it is several, be communicated on the heat exchanger shell of Leads to new breeze air duct (17) opposite side fresh air convey air duct (13),
Fresh air conveying air duct (13) is located at the middle part of heat exchange shell, is formed between the both ends and heat exchanger shell of each heat exchanger tube
Spacing.
6. the system that the reverse-flow mine return air according to claim 2,3 or 5 directly heats fresh air, which is characterized in that institute
The section for stating the heat exchanger tube (11) in heat exchanger is rectangular, round or ellipse.
7. the system that reverse-flow mine return air according to claim 5 directly heats fresh air, which is characterized in that described changes
Heat pipe is integrally arranged in the shape of a spiral, and oval groove is covered on the tube body of the heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854392.3U CN207905853U (en) | 2017-12-27 | 2017-12-27 | The system that reverse-flow mine return air directly heats fresh air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721854392.3U CN207905853U (en) | 2017-12-27 | 2017-12-27 | The system that reverse-flow mine return air directly heats fresh air |
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| Publication Number | Publication Date |
|---|---|
| CN207905853U true CN207905853U (en) | 2018-09-25 |
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ID=63569325
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721854392.3U Ceased CN207905853U (en) | 2017-12-27 | 2017-12-27 | The system that reverse-flow mine return air directly heats fresh air |
Country Status (1)
| Country | Link |
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| CN (1) | CN207905853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059951A (en) * | 2019-12-03 | 2020-04-24 | 中煤科工集团武汉设计研究院有限公司 | Mine ventilation air methane waste heat utilization device |
-
2017
- 2017-12-27 CN CN201721854392.3U patent/CN207905853U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059951A (en) * | 2019-12-03 | 2020-04-24 | 中煤科工集团武汉设计研究院有限公司 | Mine ventilation air methane waste heat utilization device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 Termination date: 20201227 |
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| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20210709 Decision number of declaring invalidation: 50829 Granted publication date: 20180925 |