EP0143190A2 - Echangeur de chaleur pour les travaux souterrains d'exploitation de mines ou de percement de tunnels - Google Patents
Echangeur de chaleur pour les travaux souterrains d'exploitation de mines ou de percement de tunnels Download PDFInfo
- Publication number
- EP0143190A2 EP0143190A2 EP84109991A EP84109991A EP0143190A2 EP 0143190 A2 EP0143190 A2 EP 0143190A2 EP 84109991 A EP84109991 A EP 84109991A EP 84109991 A EP84109991 A EP 84109991A EP 0143190 A2 EP0143190 A2 EP 0143190A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- housing
- weather
- exchanger according
- tube bundle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
Definitions
- the invention relates to a heat exchanger as a weather and / or cooling water recooler, in particular for underground mining and tunnel construction, which essentially consists of a housing with cooling surfaces and a droplet separator connected on the weather side and can be connected to a fan and / or a lute tour.
- the heat exchangers currently used underground as part of the air conditioning technology are surface-mounted weather coolers with so-called strip or plate pipe systems that are flowed through horizontally by the weather.
- strip or plate pipe systems are also used.
- finned tube or finned tube systems are also used.
- strip and plate pipe systems are known underground.
- a disadvantage of the known designs of grease or water coolers is that very large heat exchange surfaces with a considerable need for pipes and sheets made of expensive copper are required for the transmission of the usual cooling capacities underground.
- a further disadvantage of such weather coolers is that the apparatuses through which the weather flows horizontally are extremely susceptible to soiling of the cooling surfaces because self-cleaning of the cooling surfaces by condensation water can occur only to a limited extent because of the horizontal weather flow with essentially vertical condensation water outflow.
- the invention has set itself the task of creating a heat exchanger for underground mining and tunneling fen, in which the cooling surfaces with smaller dimensions and weights entail a correspondingly lower material requirement, which has a higher mechanical stability, which makes it possible to keep the cooling surfaces in weather coolers clean by self-cleaning, which has a lower need for cleaning water for weather cooling or spray water is required for water coolers and has the smallest possible height.
- This object is achieved in that the housing receiving a compact ri p pen tube bundle and on the weather side a drop separator downstream of the finned tube bundle is arranged at an angle of 10 to 20 degrees to the horizontal plane, the underside of the box-shaped housing in connection with a deflection hood as Weather entry is trained.
- the weather flow or a partial flow is conducted essentially upwards, the weather giving off heat to the cold water flowing in the opposite direction in the finned tubes when the apparatus is used as a weather cooler, and absorbing heat from the cooling water flowing in the opposite direction when used as a water cooler.
- the upward flow of the weather through the finned tube bundle requires, when used as a weather cooler, that in the event of condensation from the weather this thawing water is partially lifted by the weather and conveyed through the entire finned tube bundle, so that the cooling surfaces are constantly sprinkled with the thawing water and are of sufficient size Defrosting water self-cleaning of the cooling surfaces from dust occurs.
- the cooling surfaces can be maintained by spraying a small amount of cleaning water via the spray device in front of the finned tube bundle.
- the task of a small amount of spray water is also sufficient because of the entrainment by the weather current and because of the resulting irrigation of the heat transfer surfaces to increase the heat exchanger performance and to keep the heat transfer surfaces free.
- the condensation water that may occur during operation as a weather cooler is retained and returned to the cooler for self-cleaning.
- the cleaning water injected into the inlet weather stream is also retained by the droplet separator and returned to the cleaning process, so that, in contrast to the operation of cleaning devices of conventional weather coolers, minimal amounts of cleaning water are sufficient.
- the thawing and / or cleaning water laden with dust can be collected and drawn off in the bottom trough of the deflection hood of the heat exchanger covered by a perforated plate.
- the spray water injected into the weather stream in front of the finned tube bundle is also separated from the weather by the downstream droplet separator and drips back onto the heat exchange surface.
- Excess spray water is collected in the bottom plate of the deflection hood, which is covered by a perforated plate, and is fed back to the spraying device again with the help of a pump if the spray water is continuously clarified.
- the described options for keeping the heat exchange surfaces free from condensation or cleaning water in combination with an upward flow of the weather and a droplet separator above the finned tube bundle refutes the prejudice that compact finned tube systems are unsuitable for use in underground weather cooling.
- the relatively small dimensions of the finned tube bundle and its low weight advantageously allow the tube bundle, including the droplet separator, to be replaced easily at the place of use. Therefore, defective units or units with a certain number of Pohr rows can be replaced in a short time by units with a different number of tubes to adapt to the required heat exchange capacity or the permissible weather-side pressure loss without the substructure of the cooler including the control cabinet and the associated fan should be removed from their location.
- the possible use of quick connections in place of the screw flanges makes the assembly and disassembly of the actual heat exchanger unit even easier.
- grids are attached below the finned tube bundle and above the droplet separator.
- the known weather and water coolers can only be replaced as a whole, with at least the fans also having to be removed. Because of the use of finned tubes with a larger inner diameter and shorter overall length, the water is side pressure loss in the heat exchanger according to the invention is considerably lower than in conventional weather or water coolers. This is associated with advantages in the technical distribution of the water flows to various devices within a water supply system. In addition, the pump power required to pump the water is lower.
- the upper deflection hood is not required.
- the cooled weather exits the apparatus according to the invention obliquely upward substantially across the stream of uncooled bypass weather.
- direct blowing of the workforce by a cold weather jet is avoided and faster mixing of the cooled and uncooled weather is achieved.
- Physiological impairments of the workforce such as those caused by the cold air jet behind the apparatus when using the known horizontally flowed weather cooler, are largely prevented by the heat exchanger according to the invention.
- Appropriate training of the droplet separator redirects the emerging weather by an angle of around 30 ° to the horizontal.
- the underlying weather inlet duct rectangular cross-section finally has the advantage that it can be extended by an element supporting a control cabinet, in which all switching, regulating and monitoring devices for the heat exchanger, including fans, such as, for. B. Switchgear for the fan, regulation and spraying, hose rupture protection and temperature displays can be installed.
- the heat exchanger consists essentially of a cuboid or box-shaped housing 1 made of sheet steel, in which a finned tube bundle 2 is arranged in the lower region in a direction parallel to the arrangement of the housing 1) and a droplet separator 3 is arranged in the upper region above the finned tube bundle 2.
- the housing 1 is inclined at an angle between 10 and 20 degrees to the horizontal plane.
- the underside of the housing 1 is designed in connection with a deflection hood 5 as a weather entry. The direction of the weather is indicated by arrows.
- the upper and lower sides of the housing 1 are each covered by gratings 4 connected to the housing 1, for example by screwing, for protection against mechanical damage.
- the deflection hood 5 deflects the weather flow obliquely upwards from the horizontal.
- additional guide plates 6 are attached in the upper region of the deflection hood.
- nozzles 7 in the form of, for example, one or more nozzle assemblies for spraying cleaning water or spray water.
- the deflection hood 5 rests on two slide rails 8 connected to it. Between the slide rails 8 there is a floor pan 9 which is firmly connected to the deflection hood 5 and is covered by a perforated plate 10.
- the heat exchanger When the heat exchanger is operating as a weather cooler, the contaminated thawing and cleaning water can collect in the floor pan 9 and can be drawn off from there.
- the excess spray water is collected in the Bodon pan 9 and fed to the nozzles 7 for further spraying in a known manner with the aid of a pump.
- the distributor pipe 11 of the finned tube bundle 2 is connected to the cold or cooling water line via a flange or a quick-action coupling.
- the collecting pipe 12 the water is collected again after passing through the finned tube bundle.
- the connection of the manifold 12 to the return of the water supply is done as in the flow.
- the support plates 13 are attached between the two ends of the distributor and the collecting tube, and the protective boxes 14 and 15.
- the deflection hood 5 can, as can be seen from the exemplary embodiment in FIG. 1, by a piece of duct 16 of sufficient length and same cross-section are extended, which rests on slide rails 17.
- the connection between the slide rails 17 and the slide rails 8 of the deflection hood 5 takes place via a strain relief 18.
- a switch cabinet 19 can be mounted on the lute 16, in which all the necessary switching, regulating and monitoring devices for the heat exchanger, including the fan, can be accommodated.
- the heat exchanger is installed on the track base 25, it must be prevented that the fan sucks in an unnecessarily large amount of dust from the base 25.
- the deflection 20, which opens into a transition piece 21, in which the rectangular cross section of the deflection hood 5 and the air ducts 16 and 20 is expanded to a circular cross section for the fan connection. If the heat exchanger is suspended in the route, the deflection 20, as can be seen in FIG. 2, can be omitted, and the transition piece 21 is flanged directly onto the ventilation piece 16.
- a further deflection hood 22, as can be seen in FIG. 2, is placed on the housing 1 for use in special ventilation or in another lute tour.
- the deflection hood 22 also contains additional baffles 23 for deflecting the weather.
- the transition from the rectangular outlet cross section of the deflection hood 22 to the round air duct cross section takes place in the transition piece 24, which can be identical to the transition piece 21.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19838324173 DE8324173U1 (de) | 1983-08-23 | 1983-08-23 | Waermeaustauscher fuer den untertaegigen berg- und tunnelbau |
| DE8324173U | 1983-08-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0143190A2 true EP0143190A2 (fr) | 1985-06-05 |
| EP0143190A3 EP0143190A3 (fr) | 1986-10-15 |
Family
ID=6756386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84109991A Withdrawn EP0143190A3 (fr) | 1983-08-23 | 1984-08-22 | Echangeur de chaleur pour les travaux souterrains d'exploitation de mines ou de percement de tunnels |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0143190A3 (fr) |
| DE (1) | DE8324173U1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135008A (zh) * | 2011-02-23 | 2011-07-27 | 南京航空航天大学 | 高压制冷剂驱动的制冷净化一体机及方法 |
| CN102619551A (zh) * | 2012-04-25 | 2012-08-01 | 中煤科工集团重庆研究院 | 矿井高温回采工作面内实现长时均匀供冷的系统和方法 |
| CN107227971A (zh) * | 2016-03-24 | 2017-10-03 | 中国矿业大学(北京) | 冷风隔帐控制高温回采工作面作业区环境温度的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH482993A (de) * | 1967-05-27 | 1969-12-15 | Benteler Werke Ag | Klimaanlage mit mindestens einem Heiz- bzw. Kühlkörper |
| US3678993A (en) * | 1970-10-23 | 1972-07-25 | Trane Co | Heat exchange coil and housing therefor |
| US4019570A (en) * | 1974-03-04 | 1977-04-26 | Sidney Siegel | Heating and cooling apparatus |
| EP0060267A1 (fr) * | 1980-09-10 | 1982-09-22 | Foster-Miller Associates, Inc. | Refroidisseur a eau pulverisee |
| DE3140706A1 (de) * | 1981-10-14 | 1983-04-28 | Bergwerksverband Gmbh, 4300 Essen | Wetterkuehler mit integriertem vorentstauber und schmutzwasserklaeranlage |
-
1983
- 1983-08-23 DE DE19838324173 patent/DE8324173U1/de not_active Expired
-
1984
- 1984-08-22 EP EP84109991A patent/EP0143190A3/fr not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135008A (zh) * | 2011-02-23 | 2011-07-27 | 南京航空航天大学 | 高压制冷剂驱动的制冷净化一体机及方法 |
| CN102619551A (zh) * | 2012-04-25 | 2012-08-01 | 中煤科工集团重庆研究院 | 矿井高温回采工作面内实现长时均匀供冷的系统和方法 |
| CN107227971A (zh) * | 2016-03-24 | 2017-10-03 | 中国矿业大学(北京) | 冷风隔帐控制高温回采工作面作业区环境温度的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0143190A3 (fr) | 1986-10-15 |
| DE8324173U1 (de) | 1983-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): BE DE FR GB NL |
|
| PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
| AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): BE DE FR GB NL |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19870416 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: UHLIG, HELGE, DR. DIPL.-ING. |