CN102980435A - On-line cleaning method of inner wall of heat exchanger tube - Google Patents
On-line cleaning method of inner wall of heat exchanger tube Download PDFInfo
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- CN102980435A CN102980435A CN2012105309309A CN201210530930A CN102980435A CN 102980435 A CN102980435 A CN 102980435A CN 2012105309309 A CN2012105309309 A CN 2012105309309A CN 201210530930 A CN201210530930 A CN 201210530930A CN 102980435 A CN102980435 A CN 102980435A
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- heat exchanger
- exchanger tube
- purging system
- water inlet
- inlet pipe
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- 238000004140 cleaning Methods 0.000 title claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- 238000010926 purge Methods 0.000 claims description 50
- 241001251949 Xanthium sibiricum Species 0.000 claims description 42
- 238000011010 flushing procedure Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 5
- 235000013399 edible fruits Nutrition 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000011538 cleaning material Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 1
- 238000005406 washing Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 206010065954 Stubbornness Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000004059 degradation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses an on-line cleaning method of the inner wall of a heat exchanger tube; a water inlet pipe of a cleaning system and a water outlet pipe of the cleaning system are respectively connected with a water outlet pipe of the heat exchanger tube and a water inlet pipe of the heat exchanger tube parallelly; the water inlet pipe of the cleaning system and the water outlet pipe of the cleaning system are connected with a cleaning water pump to form a cleaning system loop; fructus xanthil is fed into the water inlet pipe of the cleaning system through a feeding device; the fructus xanthil in the water inlet pipe of the cleaning system is driven by water power to enter the heat exchanger tube and has friction with and cleans the inner wall of the heat exchanger tube; the fructus xanthil which penetrates through the heat exchanger tube enters the water outlet pipe of the cleaning system, and is sent into the water inlet pipe of the cleaning system from the cleaning water pump to be recycled. According to the on-line cleaning method of the inner wall of the heat exchanger tube, the fructus xanthil replaces a rubber ball and serves as a cleaning material, so that the cleaning effect is improved, and stubborn scale can be effectively removed; and meanwhile, the cleaning cost is significantly reduced, the fructus xanthil can be reused for a plurality of times, the discharged scrapped fructus xanthil does not produce any pollutants and harmful substances.
Description
Technical field
The present invention relates to a kind of heat exchanger tube inner wall washing method, particularly a kind of heat exchanger tube inwall on-line cleaning method of utilizing special cleaning material.
Background technology
Water resource heat pump is to utilize earth water resource to carry out the device of heat exchange as hot and cold heat transferring medium.Because the water source in river, river, lake is regenerative resource, can not cause secondary pollution, so the rivers water resource heat pump is widely used.The boiler of water source heat pump system and routine+water chiller air-conditioning system technology is compared, and belongs to the renewable energy utilization technology, have energy-efficient, water saving economize ground, environmental benefit significantly, applied range, stable and reliable operation and the advantage such as easy to maintenance.Therefore, water source heat pump air conditioning system is worldwide developed faster.
The river source heat pump device comprises from the water pump of river source water intaking and heat exchanger (condenser/evaporator) two large divisions who carries out cold/hot heat exchange with river.In the prior art, because the impurity such as rivers water source silt are more, although by a series of filters, but still can be in heat exchanger (condenser/evaporator) tubulation fouling or deposition, stop up tubulation, along with the prolongation of life cycle, heat exchange efficiency can reduce gradually.After long period used, tubulation stopped up serious, needed the dismounting heat exchanger to carry out the tubulation inner wall washing, and operating efficiency is lower.
The patent No. is that 200920128676.3 utility model patent discloses a kind of water source side device for flowing water source heat pumps, its water-feeding ﹠ drainaging pipeline at water resource heat pump is arranged in parallel cleaning device, cleaning device is comprised of flushing water pump, on-line cleaning pay-off, filter separator and cleaning water tank etc., the on-line cleaning pay-off adds cleaning material in the scavenger circuit, clean the heat exchanger tube inwall by the cleaning material friction, can realize the on-line cleaning of heat exchanger tube inwall.The patent No. is that 02248447.7 utility model patent discloses a kind of condenser heat exchange tube inner wall on-line auto-cleaning device, this cleaning device comprises rotating wash bowl conveyer and rotating wash bowl collector etc., rotating wash bowl conveyer transport cleaning ball in the scavenger circuit, clean the heat exchanger tube inwall by the rotating wash bowl friction, can realize the on-line cleaning of heat exchanger tube inwall.
Above-mentioned two kinds of devices can both be realized the on-line cleaning of (condenser/evaporator) heat exchanger tube inwall, thereby have guaranteed the heat exchange efficiency of heat exchanger tube in the operation of heat pump cycle, have improved the heat exchanger utilization rate, have saved the operation and maintenance cost.But above-mentioned two kinds of devices all need to use a kind of rotating wash bowl, and the rotating wash bowl that uses in the Practical Project at present is the glueballs that custom-made is produced, and uses this rotating wash bowl to have following shortcoming:
1) glueballs is running stores, although the part glueballs can repeatedly repeat, after each the cleaning loss of part glueballs is arranged still, and glueballs is produced energy source consumption, brings discharging and caused heat exchanger tube inner wall washing high expensive;
2) glueballs of scrapping after using is as a kind of rubber plastic class waste material, can not natural degradation, all can cause environmental pollution and stack discharging;
3) the rubbing action DeGrain of glueballs and heat exchanger tube inwall, the fouling effect of removing stubbornness is relatively poor.
Summary of the invention
In view of this, the invention provides a kind of heat exchanger tube inwall on-line cleaning method, can improve cleaning performance, effectively remove obstinate fouling, and can reduce the cleaning cost, do not produce any pollutant and nuisance.
Heat exchanger tube inwall on-line cleaning method of the present invention, purging system water inlet pipe and purging system outlet pipe is in parallel with heat exchanger tube outlet pipe and heat exchanger tube water inlet pipe respectively, purging system water inlet pipe and purging system outlet pipe are connected to form the purging system loop with flushing water pump again, the achene of Siberian cocklebur is sent in the purging system water inlet pipe by pay-off, the achene of Siberian cocklebur in the purging system water inlet pipe enters heat exchanger tube under the drive of waterpower and the heat exchanger tube inwall is cleaned in friction, enter the purging system outlet pipe through the achene of Siberian cocklebur behind the heat exchanger tube, again send into the purging system water inlet pipe by flushing water pump and recycle.
Further, described purging system outlet pipe also is connected with flushing water pump by reclaiming bypass, and described recovery bypass is provided with filter separator; After cleaning process is finished, open and reclaim bypass, the achene of Siberian cocklebur enters filter separator under waterpower drives, and the achene of Siberian cocklebur is assembled under the centrifugation of filter separator reclaims, and dries rear for subsequent use.
Further, described purging system water inlet pipe and purging system outlet pipe with the parallel way of heat exchanger tube outlet pipe and heat exchanger tube water inlet pipe are: the purging system water inlet pipe is communicated with the heat exchanger tube outlet pipe, and the purging system outlet pipe is communicated with the heat exchanger tube water inlet pipe.
Further, in the described purging system loop, circulating water flow 〉=8L/s.
Further, time of recycling in the purging system loop of the described achene of Siberian cocklebur is 5 ~ 15min.
Further, the described achene of Siberian cocklebur is through the Siberian cocklebur fruit after drying.
Beneficial effect of the present invention is: the present invention uses the achene of Siberian cocklebur to substitute glueballs as cleaning material, ellipticity pointed at both ends, middle that Siberian cocklebur is, in addition some tiny, certain degree of hardness and flexible burr arranged, diameter is about 3 ~ 5mm, the design feature of the achene of Siberian cocklebur can play good friction scale removal effect by heat exchanger tubulation inwall, therefore the present invention has improved cleaning performance, can effectively remove obstinate fouling; Simultaneously, the achene of Siberian cocklebur is the fruit of wild plant Siberian cocklebur, its wide material sources, with low cost, therefore significantly reduced the cleaning cost, and the achene of Siberian cocklebur that discharging is scrapped can not produce any pollutant and nuisance, and the achene of Siberian cocklebur that washing and cleaning operation is finished can also be repeatedly used after drying.In sum, the present invention uses the achene of Siberian cocklebur to carry out the on-line cleaning of heat exchanger tube inwall, the natural generation of material, more natural environmental-protective, efficient, economic and practical.
Description of drawings
In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing, wherein:
Schematic diagram when Fig. 1 carries out heat exchanger tube inwall on-line cleaning for use method of the present invention.
The specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.
Schematic diagram when Fig. 1 carries out heat exchanger tube inwall on-line cleaning for use method of the present invention, as shown in the figure, heat exchanger tube inwall on-line cleaning method of the present invention, purging system water inlet pipe 1 and purging system outlet pipe 2 is in parallel with heat exchanger tube outlet pipe 3 and heat exchanger tube water inlet pipe 4 respectively, purging system water inlet pipe 1 and purging system outlet pipe 2 are connected to form the purging system loop with flushing water pump 5 again, the achene of Siberian cocklebur 6 is sent in the purging system water inlet pipe 1 by pay-off 7, the achene of Siberian cocklebur 6 in the purging system water inlet pipe 1 enters heat exchanger tube 8 under the drive of waterpower and heat exchanger tube 8 inwalls are cleaned in friction, enter purging system outlet pipe 2 through the achene of Siberian cocklebur 6 behind the heat exchanger tube 8, again send into purging system water inlet pipe 1 by flushing water pump 5 and recycle.
Described purging system outlet pipe 2 also is connected with flushing water pump 5 by reclaiming bypass 9, and described recovery bypass 9 is provided with filter separator 10; After cleaning process is finished, open recovery bypass 9(and close electrically operated valve 11, open electrically operated valve 12,13), the achene of Siberian cocklebur 6 enters filter separator 10 under waterpower drives, and the achene of Siberian cocklebur 6 is assembled recovery under the centrifugation of filter separator 10, dry rear for subsequent use.
Described purging system water inlet pipe 1 and purging system outlet pipe 2 with the parallel way of heat exchanger tube outlet pipe 3 and heat exchanger tube water inlet pipe 4 are: purging system water inlet pipe 1 is communicated with heat exchanger tube outlet pipe 3, and purging system outlet pipe 2 is communicated with heat exchanger tube water inlet pipe 4; This parallel way makes the flow direction of purging system opposite with the flow direction of heat exchanger media water, utilizes back flush to be conducive to improve cleaning efficiency.
In the described purging system loop, circulating water flow 〉=8L/S; Discharge must be able to guarantee the achene of Siberian cocklebur circulating in whole purging system loop.
The time that the described achene of Siberian cocklebur 6 recycles in the purging system loop is 5 ~ 15min; The wash cycles time is grasped flexibly according to the actual conditions of heat exchanger, cleaning frequency etc.
The described achene of Siberian cocklebur 6 is through the Siberian cocklebur fruit after drying.
The described achene of Siberian cocklebur 6 is determined according to actual needs by the dosage of pay-off 7.
The present invention uses the achene of Siberian cocklebur to substitute glueballs as cleaning material, ellipticity pointed at both ends, middle that Siberian cocklebur is, in addition some tiny, certain degree of hardness and flexible burr arranged, diameter is about 3 ~ 5mm, the design feature of the achene of Siberian cocklebur can play good friction scale removal effect by heat exchanger tubulation inwall, therefore the present invention has improved cleaning performance, can effectively remove obstinate fouling; Simultaneously, the achene of Siberian cocklebur is the fruit of wild plant Siberian cocklebur, its wide material sources, with low cost, therefore significantly reduced the cleaning cost, and the achene of Siberian cocklebur that discharging is scrapped can not produce any pollutant and nuisance, and the achene of Siberian cocklebur that washing and cleaning operation is finished can also be repeatedly used after drying.
In sum, the present invention uses the achene of Siberian cocklebur to carry out the on-line cleaning of heat exchanger tube inwall, the natural generation of material, more natural environmental-protective, efficient, economic and practical.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although by invention has been described with reference to the preferred embodiments of the present invention, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and not depart from the spirit and scope of the present invention that appended claims limits.
Claims (6)
1. heat exchanger tube inwall on-line cleaning method, purging system water inlet pipe and purging system outlet pipe is in parallel with heat exchanger tube outlet pipe and heat exchanger tube water inlet pipe respectively, purging system water inlet pipe and purging system outlet pipe are connected to form the purging system loop with flushing water pump again, it is characterized in that: the achene of Siberian cocklebur is sent in the purging system water inlet pipe by pay-off, the achene of Siberian cocklebur in the purging system water inlet pipe enters heat exchanger tube under the drive of waterpower and the heat exchanger tube inwall is cleaned in friction, enter the purging system outlet pipe through the achene of Siberian cocklebur behind the heat exchanger tube, again send into the purging system water inlet pipe by flushing water pump and recycle.
2. heat exchanger tube inwall on-line cleaning method according to claim 1 is characterized in that: described purging system outlet pipe also is connected with flushing water pump by reclaiming bypass, and described recovery bypass is provided with filter separator; After cleaning process is finished, open and reclaim bypass, the achene of Siberian cocklebur enters filter separator under waterpower drives, and the achene of Siberian cocklebur is assembled under the centrifugation of filter separator reclaims, and dries rear for subsequent use.
3. heat exchanger tube inwall on-line cleaning method according to claim 1, it is characterized in that: described purging system water inlet pipe and purging system outlet pipe with the parallel way of heat exchanger tube outlet pipe and heat exchanger tube water inlet pipe are: the purging system water inlet pipe is communicated with the heat exchanger tube outlet pipe, and the purging system outlet pipe is communicated with the heat exchanger tube water inlet pipe.
4. heat exchanger tube inwall on-line cleaning method according to claim 1 is characterized in that: in the described purging system loop, and circulating water flow 〉=8L/s.
5. heat exchanger tube inwall on-line cleaning method according to claim 1, it is characterized in that: the time that the described achene of Siberian cocklebur recycles in the purging system loop is 5 ~ 15min.
6. according to claim 1 to the described heat exchanger tube inwall of 5 any one on-line cleaning method, it is characterized in that: the described achene of Siberian cocklebur is through the Siberian cocklebur fruit after drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105309309A CN102980435A (en) | 2012-12-11 | 2012-12-11 | On-line cleaning method of inner wall of heat exchanger tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105309309A CN102980435A (en) | 2012-12-11 | 2012-12-11 | On-line cleaning method of inner wall of heat exchanger tube |
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| Publication Number | Publication Date |
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| CN102980435A true CN102980435A (en) | 2013-03-20 |
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| CN2012105309309A Pending CN102980435A (en) | 2012-12-11 | 2012-12-11 | On-line cleaning method of inner wall of heat exchanger tube |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256856A (en) * | 2013-05-11 | 2013-08-21 | 苏州博讯仪器有限公司 | Scale cleaning method for cooler |
| CN104390511A (en) * | 2014-11-19 | 2015-03-04 | 重庆勤俭节电科技有限公司 | Circular washing device for central air-conditioning fan coil |
| CN105806147A (en) * | 2014-12-31 | 2016-07-27 | 国家电网公司 | Condenser rubber ball cleaning system for gas-fired thermal power plant and start and stop control method of condenser rubber ball cleaning system |
| CN110487109A (en) * | 2019-09-20 | 2019-11-22 | 江阴市亚龙换热设备有限公司 | There is the cleaning method of coking fouling plate heat exchanger |
| CN111854127A (en) * | 2020-07-30 | 2020-10-30 | 高玉胜 | Hydraulic exchange energy-saving device of ground source heat pump air conditioning unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105806147A (en) * | 2014-12-31 | 2016-07-27 | 国家电网公司 | Condenser rubber ball cleaning system for gas-fired thermal power plant and start and stop control method of condenser rubber ball cleaning system |
| CN105806147B (en) * | 2014-12-31 | 2017-11-07 | 国家电网公司 | Gas power station rubber ball cleaning system for steam condenser and its start-up and shut-down control method |
| CN110487109A (en) * | 2019-09-20 | 2019-11-22 | 江阴市亚龙换热设备有限公司 | There is the cleaning method of coking fouling plate heat exchanger |
| CN111854127A (en) * | 2020-07-30 | 2020-10-30 | 高玉胜 | Hydraulic exchange energy-saving device of ground source heat pump air conditioning unit |
| CN111854127B (en) * | 2020-07-30 | 2021-10-29 | 山东海利丰清洁能源股份有限公司 | Hydraulic exchange energy-saving device of ground source heat pump air conditioning unit |
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Application publication date: 20130320 |