EP0759143A1 - Auffanghülse für reinigungsbürsten in röhrenwärmetauschern - Google Patents
Auffanghülse für reinigungsbürsten in röhrenwärmetauschernInfo
- Publication number
- EP0759143A1 EP0759143A1 EP95919996A EP95919996A EP0759143A1 EP 0759143 A1 EP0759143 A1 EP 0759143A1 EP 95919996 A EP95919996 A EP 95919996A EP 95919996 A EP95919996 A EP 95919996A EP 0759143 A1 EP0759143 A1 EP 0759143A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coupling piece
- webs
- collecting sleeve
- pipe
- sleeve according
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/02—Non-rotary, e.g. reciprocated, appliances having brushes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
- F28G1/125—Fluid-propelled scrapers, bullets, or like solid bodies forced back and forth by means of flow reversal
Definitions
- the invention relates to a collecting sleeve for cleaning brushes in tubular heat exchangers, with a cage-like jacket formed by longitudinal webs, a stop for the cleaning brush at one end of the collecting sleeve and a coupling piece designed at the opposite end for connecting the collecting sleeve to the End of a pipe to be cleaned.
- DE-PS 1 138 800 describes a method for cleaning the cooling tubes of tube heat exchangers, in which cleaning brushes are moved longitudinally through the cooling tubes in order to remove deposits from the tube inner walls.
- the cooling tubes are arranged in large numbers parallel to one another and with the narrowest possible division in tube sheets and open with their opposite ends in two chambers, via which the cooling water is supplied and removed.
- the cleaning brushes are equipped with radially projecting bristles in their central section and each have an end cap at the ends, which takes up a substantial part of the tube cross section, so that the cleaning brush opposes a certain resistance to the cooling water flow and is caused by the water flow in the Pipe is moved.
- the ends of the cooling tubes are fitted with the above-mentioned collecting sleeves, so that the cleaning brushes are intercepted at the tube mouth and are held in a position coaxially aligned with the tubes, in which they prevent the cooling water from emerging from the tube mouth as little as possible.
- the cleaning brushes are sucked back into the cooling pipes and transported to the opposite end of the heat exchanger. By periodically reversing the direction of flow of the cooling water, the cleaning brushes are moved back and forth in the cooling tubes.
- a collecting sleeve of the type mentioned in which the webs of the jacket on the end facing away from the cooling tube by means of an annular collar inclined to the tube axis are connected.
- the stop for the cleaning brush is arranged in this ring collar.
- the oblique position of the annular collar is intended to achieve a larger outflow cross-section, so that the flow of the cooling water is hampered as little as possible when the cleaning brushes are seated in the collecting sleeves and the water emerging from the cooling tubes flows around them. If the outflow cross-section is not sufficient, the flow resistance of the cleaning brushes and the collecting sleeves causes an additional pressure loss ⁇ p, so that a correspondingly higher pumping power is required and the efficiency in the system in which the heat exchanger is operated is lower.
- the object of the invention is to provide a collecting sleeve of the type mentioned, which is simple to manufacture and allows a further reduction in flow resistance, so that the additional pressure drop ⁇ p is largely avoided.
- the collecting sleeve according to the invention thus has no ring collar at the free end which could hinder the outflow of water.
- the end portions of the webs converging at the apex ensure an extended - 3 -
- the cleaning sleeve is preferably constructed in two parts from a cage part and a coupling piece releasably locked therewith, and the coupling piece is provided with streamlined profiled locking claws for connection to the cage part. This enables the cage part to be easily detached when the cooling tubes are cleaned by hand, without the flow resistance being appreciably increased.
- the collecting sleeve according to the invention has the advantage that it can be produced more easily from plastic in terms of demolding technology.
- FIG. 1 shows a partially cut-away side view of the collecting sleeve with the cleaning brush held therein;
- FIG. 2 the collecting sleeve of Figure 1 in plan view. 3 shows partial sections through a cage part and a coupling piece of the collecting sleeve in a separated state;
- Fig. 4 shows a section through the end region of the cage part and through the coupling piece of a collecting sleeve according to another embodiment.
- the collecting sleeve has a cage part 10 with four webs 12 arranged at an angular spacing of 90 °, which form a cage-like perforated jacket and merge into pyramid-shaped end sections 14 at the upper end in FIG.
- the end sections 14 are integrally connected to one another at the apex 16 and have a streamlined, approximately streamlined profile, as can be seen in FIG. 1 in the cut end section shown. At the apex 16, the end portions 14 are also slightly rounded.
- the collecting sleeve has an annular collar 18, which connects the webs 12 to one another and to which there is axially connected a coupling piece 20, with which the collecting sleeve can be coupled coaxially to the end of a cooling pipe (not shown).
- the coupling piece 20 can be inserted in the usual way into the end of the cooling tube or can be attached to it. The same assembly tools as for conventional collecting sleeves can thus be used to assemble the collecting sleeve according to the invention.
- the webs 12 are supported at one end by the annular collar 18 and at the opposite end by the pyramid-shaped end sections 14, so that overall a dimensionally stable structure results.
- the end sections 14 also form a stop for a conical end cap 22 of a cleaning brush 24 known as such.
- the middle section of the cleaning brush 24 is equipped with radially projecting bristles 26 and has one at the lower end in FIG. 1 towards the end cap pe 22 mirror image end cap 28.
- the cooling water can therefore flow closely around the lower end cap 28, the bristles 26 and the upper end cap 22 of the cleaning brush 24 without the flow being impeded by an annular collar at the upper end of the webs 12.
- the apex 16 of the pyramid lies in the flow shadow of the upper end cap 22 and therefore does not cause an increase in the flow resistance.
- the end cap 22 is accommodated in the pyramid-shaped part of the collecting sleeve to save space, so that the overall length of the collecting sleeve can be reduced to a minimum. This also helps to reduce the flow resistance.
- the webs 12 are tapered in their cross section from the lower end to the end sections 14, so that the interstices between the webs expand correspondingly upwards.
- the cage part 10 can also have a different number of webs instead of four webs 12, for example three webs arranged at angular intervals of 120 °.
- the coupling piece 20 is detachably fastened to the annular collar 18 of the cage part 10 with locking claws 30.
- the locking claws 30 engage from the inside in the ring collar 18 and have an approximately streamlined profile, so that they pass into the inner cross section of the cage part 10 via an inner cone 32.
- a corresponding inner cone 34 is also formed according to FIG. 3 by the ends of the webs 12 of the cage part, which thus simultaneously define a stop for the coupling piece 20.
- the latching claws 30 can be easily released in the spaces between the webs 12, so that the cage part 10 can be removed. A cleaning body can then be inserted into the cooling tube through the coupling piece 20 remaining at the end of the cooling tube. Replacing worn cleaning brushes 24 is also made easier by the detachability of the cage part.
- FIG. 4 shows a modified embodiment of the collecting sleeve, which can be used as a so-called push-on sleeve without the coupling piece 20, in that it is plugged onto the outer circumference of the end of the associated cooling tube.
- the same collecting sleeve can also be used as a so-called one-piece sleeve which is inserted with the free end region of the coupling piece 20 into the inner cross section of the cooling tube.
- the collecting sleeve, in particular the cage part 10 can be used in a variety of ways.
- the thickness of the webs 12 in the radial direction is greater than the wall thickness of the annular collar 18 connected in one piece to these webs.
- the lower ends of the webs 12 thus extend axially a little over the inner surface of the annular collar 18 and form stops for the coupling piece 20, which fits snugly in the lower end portion of the collar 18.
- the coupling piece 20 is locked to the ring collar by means of the locking claws 30, as in the previously described embodiment.
- the outside diameter of the cylindrical part of the coupling piece corresponds to the inside diameter of the associated cooling tube, so that the lower end section of the coupling piece protruding over the ring collar can be inserted into the end of the cooling pipe, the lower end of the ring collar 18 making a stop for forms the end of the cooling tube.
- two circumferential grooves 36 are formed, each of which adjoins a circumferential, elastically yielding lip 38 at the bottom.
- the radially projecting lips 38 ensure a tight and firm fit of the coupling piece in the end of the cooling tube and can be elastically bent back when the coupling piece is inserted into the cooling tube and can escape into the annular grooves 36.
- this collecting sleeve is to be used as a push-on sleeve, the locking claws 30 are released and the coupling piece 20 is removed.
- the collecting sleeve can then be plugged onto the end of the cooling tube with the projecting cylindrical lower part of its annular collar 18. The lower ends of the webs 12 then form a stop for the end of the cooling tube.
- the basket part 10 in such a way that it is to be provided with a correspondingly adapted coupling piece both when used as a push-on sleeve and when used as a push-in sleeve.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
- Brushes (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9407480U | 1994-05-05 | ||
DE9407480U DE9407480U1 (de) | 1994-05-05 | 1994-05-05 | Auffanghülse für Reinigungsbürsten in Röhrenwärmetauschern |
PCT/EP1995/001655 WO1995030869A1 (de) | 1994-05-05 | 1995-05-02 | Auffanghülse für reinigungsbürsten in röhrenwärmetauschern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0759143A1 true EP0759143A1 (de) | 1997-02-26 |
EP0759143B1 EP0759143B1 (de) | 1997-11-05 |
Family
ID=6908276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95919996A Expired - Lifetime EP0759143B1 (de) | 1994-05-05 | 1995-05-02 | Auffanghülse für reinigungsbürsten in röhrenwärmetauschern |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0759143B1 (de) |
AT (1) | ATE160010T1 (de) |
DE (2) | DE9407480U1 (de) |
WO (1) | WO1995030869A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104197734B (zh) * | 2014-09-04 | 2016-06-08 | 王海峰 | 一种蒸汽冷凝器 |
CN104197735B (zh) * | 2014-09-04 | 2017-11-24 | 威海市妇女儿童医院 | 化学蒸汽处理装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4124065A (en) * | 1976-11-04 | 1978-11-07 | Water Services Of America, Inc. | Apparatus for cleaning heat exchanger tubes |
US4561495A (en) * | 1983-09-16 | 1985-12-31 | Water Service Of America, Inc. | Alignment of basket retainer clips for heat exchanger tube cleaning elements |
US4667732A (en) * | 1985-07-05 | 1987-05-26 | Harding Paul J | Heat exchanger tube cleaning system |
-
1994
- 1994-05-05 DE DE9407480U patent/DE9407480U1/de not_active Expired - Lifetime
-
1995
- 1995-05-02 DE DE59500955T patent/DE59500955D1/de not_active Expired - Fee Related
- 1995-05-02 WO PCT/EP1995/001655 patent/WO1995030869A1/de active IP Right Grant
- 1995-05-02 AT AT95919996T patent/ATE160010T1/de not_active IP Right Cessation
- 1995-05-02 EP EP95919996A patent/EP0759143B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9530869A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1995030869A1 (de) | 1995-11-16 |
EP0759143B1 (de) | 1997-11-05 |
ATE160010T1 (de) | 1997-11-15 |
DE9407480U1 (de) | 1994-07-21 |
DE59500955D1 (de) | 1997-12-11 |
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