CN104019696A - Condenser washing device and method based on injection effect - Google Patents
Condenser washing device and method based on injection effect Download PDFInfo
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- CN104019696A CN104019696A CN201410270106.3A CN201410270106A CN104019696A CN 104019696 A CN104019696 A CN 104019696A CN 201410270106 A CN201410270106 A CN 201410270106A CN 104019696 A CN104019696 A CN 104019696A
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- condenser
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Abstract
The invention discloses a condenser washing device and method based on the injection effect. The device is composed of an injection device. One end of the injection device is connected with a robot cleaning nozzle, and the other end of the injection device is positioned in an inlet of a condenser heat exchanging pipe. The injection device is composed of a suction section, a contraction section, a throat mixing section, an outlet diffusion section and an outlet sealing section. The method comprises the steps that the outlet sealing section is positioned to a condenser heat exchanging pipe to be cleaned; a high-pressure water pump is started, high-pressure water is jetted to the suction section through the cleaning nozzle, a large amount of water around a suction cleaning device is sucked and enters the inlet of the suction section, the high-speed water flow and the sucked water are mixed through the injection device and enter the condenser heat exchanging pipe finally, and the dirt on the inner wall of the condenser heat exchanging pipe is removed through scouring of the water flow. The condenser washing device can carry out online washing, maintaining cost of a power plant is saved, a very good cleaning effect of algae and other mild scale can be achieved, pollution does not exist, operation is safe, and the condenser washing device is simple and practical.
Description
Technical field
The present invention relates to condenser cleaning technique field, be specifically related to a kind of condenser cleaning equipment and the method for thermal power plant based on injection effect that be applicable to.
Background technology
Condenser is the cold junction of power plant's thermodynamic cycle, and its Main Function is that turbine discharge is condensed into water, forms and keeps higher vacuum.Heat exchange tube of condenser encrustation can be divided three classes by formation mechanism: incrustation scale, dirt, biological sludge in industrial.Incrustation scale is because recirculated water constantly evaporates, and calcium in water, the concentrated deposition of magnesium are formed, and its main component is calcium carbonate, belongs to hard scale, should not remove; Dirt is because the depositions such as the impurity comprising in recirculated water, dust, silt particle, micropopulation form, more loose; Biological sludge in industrial is the growth and breeding due to algae in water and mushroom, is attached to one deck biomembrane forming on tube wall, softer.
After heat exchange tube of condenser fouling, can cause heat transfer effect to reduce, soften(ing), thermal efficiency of cycle reduces, and gross coal consumption rate increases, and the economy of unit reduces; Cause the corrosion of heat exchanger tube, reduce condenser service life, when serious, leak, to the safe operation generation significant impact of Steam-water Quality and unit.Therefore, clean in time heat exchange tube of condenser, make it keep clean very important.
At present, the cleaning method of condenser mainly contains: 1) glueballs cleans, the current comparatively cleaning method of extensive use.It can realize on-line cleaning, and cleaning performance is better, handling safety, but glueballs easily stops up in pipe, and the rate of recovery is low, and expense is higher.2) Chemical cleaning.Its cleaning is more thorough, can on-line cleaning, but technique is loaded down with trivial details, and chemical feeding quantity is difficult to accurate control, may cause equipment corrosion, spends larger.3) artificial steel brush cleans.The method can reach cleaning object, but can only clean by off-line, wastes time and energy.4) high-pressure water jet condenser on-line cleaning Robotics.The cleaning that this technology has kept off-line Cleaning by High Pressure Water Jet thoroughly with to features such as condenser are harmless, pollution-free, can realize again On Line Foul Removing Technology, has avoided opening, shutting down the economic loss of bringing, and has good prospect.What this technology adopted at present is that water under high pressure drives the shower nozzle that connects high-pressure water hose, put in condenser tube and clean, but some problems in engineering reality, are run into, as: shower nozzle stretches in condenser tube and cleans and need very large thrust, so may occur in reality that thrust causes shower nozzle not stretch into completely not, cause cleaning not exclusively; Shower nozzle and high-pressure water hose may be stuck in heat exchanger tube; The underwater reliability of coil device of high-pressure water hose is not strong; Arrange coil system possible space deficiency under water.
Summary of the invention
Technical problem: the present invention seeks to overcome the weak point in prior art, a kind of simple in structure, easy to operate, reliability is strong, scaling effect the is good condenser cleaning equipment based on injection effect and method are provided.
Technical scheme: the condenser cleaning equipment based on injection effect of the present invention, it is made up of through the induction apparatus that shower nozzle fixed seating is contained on robot cleaning shower nozzle, the other end is positioned on heat exchange tube of condenser entrance one end, and described induction apparatus is made up of suction casing, contraction section, throat's mixing section, outlet diffuser and exit seal section successively; The tapered body of described contraction section, big opening end is connected with suction casing, and osculum end is connected with throat mixing section, the described tapered body of outlet diffuser, osculum end is connected with throat mixing section, and big opening end is connected with exit seal section.
The horizontal sextant angle of described contraction section is 30 °, and length is 10-13mm; The diameter of throat's mixing section is 13mm-17mm, and length is 52-68mm; The horizontal sextant angle of outlet diffuser is 3～5 °, and length is 45-80mm.
The condenser cleaning method based on injection effect that uses the above device, comprises the steps:
A. the suction casing of induction apparatus is contained in to robot through shower nozzle fixed seating and cleans on shower nozzle, the exit seal section of induction apparatus is positioned on the heat exchange tube of condenser entrance that needs to clean, and compresses;
B. open high-pressure hydraulic pump, after being reduced pressure by robot cleaning shower nozzle acceleration, water under high pressure injects at a high speed the contraction section of induction apparatus through the suction casing of induction apparatus, and cause low pressure near the outlet of robot cleaning shower nozzle, while work due to cleaning device, in the underwater environment at place, the pressure of water is greater than the pressure that cleans near the high-velocity flow of shower nozzle outlet, thereby cleaning device water is around entered from the porch of suction casing by a large amount of suctions; Together with cleaning the high-velocity flow of shower nozzle with robot and in contraction section imports throat's mixing section, mix gradually, then enter outlet diffuser, finally enter heat exchange tube of condenser by exit seal section, by washing away of current, the dirt of heat exchange tube of condenser inwall is removed.
Beneficial effect: owing to adopting technique scheme, the present invention enough effectively removes the soft dirt taking algae as representative of heat exchange tube of condenser, efficiently solves some problems that current high-pressure water jet condenser on-line cleaning robot runs in engineering reality.Compared with prior art, tool has the following advantages:
1) can carry out on-line cleaning, when cleaning, generating set need not be shut down, and has saved the maintenance cost in power plant.
2) adopt after this device, the stream scooter 7m/s of water in heat exchanger tube, this speed has good cleaning performance to the soft dirt taking algae as representative; And if the water under high pressure of uniform pressure is directly sprayed into heat exchange tube of condenser, axial velocity decays rapidly, speed is almost 0 after the 0.1m, and heat exchanger tube total length is 10m, the 9.9m after that is to say can not get effective washing.Therefore adopt this device can greatly improve the flow velocity of water in heat exchange tube of condenser, and then improve its cleaning performance, thus the work normally and efficiently of guarantee condenser, the economy of guarantee unit operation.
3) pollution-free, handling safety, can not cause damage to tube wall.
4) method is simple, and cost is lower.
Brief description of the drawings
Fig. 1 is structural profile schematic diagram of the present invention.
Fig. 2 is the structure chart of shower nozzle holder of the present invention.
In figure: 1-robot cleans shower nozzle, 2-suction casing, 3-contraction section, 4-throat mixing section, 5-exports diffuser, 6-exit seal section, 7-heat exchange tube of condenser, 8-shower nozzle holder.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
Condenser cleaning equipment based on injection effect of the present invention, it is made up of through the induction apparatus that shower nozzle holder 8 is sleeved on robot cleaning shower nozzle 1, the other end is positioned on heat exchange tube of condenser 7 entrances one end, and described induction apparatus is made up of suction casing 2, contraction section 3, throat's mixing section 4, outlet diffuser 5 and exit seal section 6 successively; The described tapered body of contraction section 3, the horizontal sextant angle of contraction section 3 is 30 °, length is 10-13mm; Contraction section 3 big opening ends are connected with suction casing 2, and osculum end is connected with throat mixing section 4, and the diameter of described throat's mixing section 4 is 13mm-17mm, and length is 52-68mm; The described tapered body of outlet diffuser 5, the horizontal sextant angle of outlet diffuser 5 is 3～5 °, length is 45-80mm.Outlet diffuser 5 osculum ends are connected with throat mixing section 4, and big opening end is connected with exit seal section 6.
The condenser cleaning method based on injection effect that uses the above device, comprises the steps: while specifically enforcement
A. the suction casing of induction apparatus is sleeved on to robot through shower nozzle holder 8 and cleans on shower nozzle 1, the exit seal section 6 of induction apparatus is positioned on heat exchange tube of condenser 7 entrances that need to clean, and compresses;
B. open high-pressure hydraulic pump, the water under high pressure of 10-20MPa is cleaned shower nozzle 1 and is accelerated to inject at a high speed through the suction casing 2 of induction apparatus after decompression the contraction section 3 of induction apparatus by robot, and cause low pressure near the outlet of robot cleaning shower nozzle 1, while work due to cleaning device, in the underwater environment at place, the pressure of water is greater than the pressure that cleans near the high-velocity flow of shower nozzle outlet, thereby cleaning device water is around entered from the porch of suction casing 2 through shower nozzle holder 8 by a large amount of suctions; The high-velocity flow that cleans shower nozzle 1 with robot mixes gradually in the lump in contraction section 3 imports throat's mixing section 4, then enter outlet diffuser 5, finally enter heat exchange tube of condenser 7 by exit seal section 6, by washing away of current, the dirt of heat exchange tube of condenser 7 inwalls is removed.
Claims (3)
1. the condenser cleaning equipment based on injection effect, it is characterized in that: it is sleeved on through shower nozzle holder (8) by one end, and robot cleaning shower nozzle (1) is upper, the other end is positioned at the induction apparatus formation on heat exchange tube of condenser (7) entrance, and described induction apparatus is made up of suction casing (2), contraction section (3), throat's mixing section (4), outlet diffuser (5) and exit seal section (6) successively; The described tapered body of contraction section (3), big opening end is connected with suction casing (2), osculum end is connected with throat's mixing section (4), the described tapered body of outlet diffuser (5), osculum end is connected with throat's mixing section (4), and big opening end is connected with exit seal section (6).
2. a kind of condenser cleaning equipment based on injection effect according to claim 1, is characterized in that: the horizontal sextant angle of described contraction section (3) is 30 °, and length is 10-13mm; The diameter of throat's mixing section (4) is 13mm-17mm, and length is 52-68mm; The horizontal sextant angle of outlet diffuser (5) is 3～5 °, and length is 45-80mm.
3. right to use requires the condenser cleaning method based on injection effect of device described in 1, it is characterized in that, comprises the steps:
A. the suction casing of induction apparatus (2) being sleeved on to robot through shower nozzle holder (8) cleans on shower nozzle (1), the exit seal section (6) of induction apparatus is positioned on heat exchange tube of condenser (7) entrance that needs to clean, and compresses;
B. open high-pressure hydraulic pump, water under high pressure is cleaned shower nozzle (1) and is accelerated to inject at a high speed through the suction casing (2) of induction apparatus after decompression the contraction section (3) of induction apparatus by robot, and cause low pressure near the outlet of robot cleaning shower nozzle (1), while work due to cleaning device, in the underwater environment at place, the pressure of water is greater than the pressure that cleans near the high-velocity flow of shower nozzle outlet, thereby cleaning device water is around entered from the porch of suction casing (2) by a large amount of suctions; With together with high-velocity flow that robot cleans shower nozzle (1) and mix gradually in contraction section (3) imports throat's mixing section (4), then enter outlet diffuser (5), finally enter heat exchange tube of condenser (7) by exit seal section (6), by washing away of current, the dirt of heat exchange tube of condenser (7) inwall is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270106.3A CN104019696B (en) | 2014-06-17 | 2014-06-17 | A kind of condenser cleaning equipment based on injection effect and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270106.3A CN104019696B (en) | 2014-06-17 | 2014-06-17 | A kind of condenser cleaning equipment based on injection effect and method |
Publications (2)
| Publication Number | Publication Date |
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| CN104019696A true CN104019696A (en) | 2014-09-03 |
| CN104019696B CN104019696B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410270106.3A Expired - Fee Related CN104019696B (en) | 2014-06-17 | 2014-06-17 | A kind of condenser cleaning equipment based on injection effect and method |
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| CN (1) | CN104019696B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841393A (en) * | 2019-11-29 | 2020-02-28 | 黄予欣 | Smoke removing method, moxibustion therapeutic device and tobacco smoke purifier |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB131137A (en) * | 1918-08-13 | 1919-08-13 | Charles Percy Parry | Improvements in Apparatus for Cleaning the Tubes of Water-tube Boilers. |
| US4715538A (en) * | 1984-04-03 | 1987-12-29 | Woma-Apparatebau Wolfgang Maasberg & Co., Gmbh | Swirl jet nozzle as a hydraulic work tool |
| US5505163A (en) * | 1994-03-18 | 1996-04-09 | Jameel; Mohomed I. | Sootblower nozzle |
| CN202845223U (en) * | 2012-10-31 | 2013-04-03 | 江西中烟工业有限责任公司赣南卷烟厂 | Single-medium nozzle |
| CN203076289U (en) * | 2013-03-04 | 2013-07-24 | 付亚波 | Device for cleaning inner wall of condensation pipe by high-pressure water jet |
| CN203940778U (en) * | 2014-06-17 | 2014-11-12 | 中国矿业大学 | A kind of condenser cleaning equipment based on injection effect |
-
2014
- 2014-06-17 CN CN201410270106.3A patent/CN104019696B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB131137A (en) * | 1918-08-13 | 1919-08-13 | Charles Percy Parry | Improvements in Apparatus for Cleaning the Tubes of Water-tube Boilers. |
| US4715538A (en) * | 1984-04-03 | 1987-12-29 | Woma-Apparatebau Wolfgang Maasberg & Co., Gmbh | Swirl jet nozzle as a hydraulic work tool |
| US5505163A (en) * | 1994-03-18 | 1996-04-09 | Jameel; Mohomed I. | Sootblower nozzle |
| US5505163B1 (en) * | 1994-03-18 | 1999-07-06 | Bergemann Usa Inc | Sootblower nozzle |
| CN202845223U (en) * | 2012-10-31 | 2013-04-03 | 江西中烟工业有限责任公司赣南卷烟厂 | Single-medium nozzle |
| CN203076289U (en) * | 2013-03-04 | 2013-07-24 | 付亚波 | Device for cleaning inner wall of condensation pipe by high-pressure water jet |
| CN203940778U (en) * | 2014-06-17 | 2014-11-12 | 中国矿业大学 | A kind of condenser cleaning equipment based on injection effect |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841393A (en) * | 2019-11-29 | 2020-02-28 | 黄予欣 | Smoke removing method, moxibustion therapeutic device and tobacco smoke purifier |
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| Publication number | Publication date |
|---|---|
| CN104019696B (en) | 2015-09-23 |
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