CN204085309U - The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler - Google Patents
The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler Download PDFInfo
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- CN204085309U CN204085309U CN201420551398.3U CN201420551398U CN204085309U CN 204085309 U CN204085309 U CN 204085309U CN 201420551398 U CN201420551398 U CN 201420551398U CN 204085309 U CN204085309 U CN 204085309U
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- descaling agent
- descaling
- slide unit
- cooler
- chemical structure
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Abstract
The utility model discloses the online precise chemical structure descaling device of a kind of industrial shell and tube water cooler, comprise and be arranged on descaling agent liquid dispensing device outside cooler hydroecium and Servocontrol device; Underwater positioning device and descaling agent injection device are installed in described water chiller hydroecium, underwater positioning device connects Servocontrol device by water-proof cable, descaling agent liquid dispensing device is by tubes connection descaling agent injection device, and described underwater positioning device is formed by connecting by two casings with vertical machine by Horizontal machine.This device improves equipment reliability of operation, while considerably reducing cooler cleaning cost, increased substantially again cleaning performance, achieves double goal that is energy-conservation, that reduce discharging, in this area, therefore have good and application prospect widely.
Description
Technical field
The utility model belongs to industrial heat exchanger Chemical cleaning field, is a kind of new technology of heat exchanger energy-saving and emission-reduction, is specifically related to the online precise chemical structure descaling device of a kind of industrial shell and tube water cooler.
Background technology
Shell and tube water cooler is widely used in one of industrial department main auxiliary equipments such as power, chemical industry, oil and atomic energy, be responsible for various power, electrically, machinery and the important cooling task of chemical reaction equipment, the quality of its service behaviour has important impact to the safety of enterprise, economical operation.In diabatic process, in shell and tube water cooler, heat exchanger tube water side inwall is owing to easily forming incrustation scale and spot by the impact of heating and water quality, the performance of heat exchanger exerts an adverse impact, and how remove incrustation scale and spot is in time a major issue urgently to be resolved hurrily always.For power plant: condenser is exactly a kind of shell and tube water cooler: be made up of thousands of heat exchanger tubes, steam is walked outside pipe, cooling water is walked in pipe, because there being the existence of heat exchange, the salt in cooling water is constantly separated out in laser heating process, forms a large amount of incrustation scales and is attached on tube wall, vacuum in condenser is caused to decline, gross coal consumption rate rises, and cost of electricity-generating increases, and therefore reduces the efficiency of Turbo-generator Set.As condenser fouling about 0.5mm, vacuum can be made to drop to less than 85% by more than 90%, gross coal consumption rate is made to raise 15 ~ 20g/kWh, for the 300MW unit that a year running 7000h, rate of load condensate are 90 %, standard coal about 28 ~ 380,000 tons will be consumed every year more, if scale forming reaches 1mm, then not only many coal consumptions will exceed annual more than 50,000 tons, and will affect 10% exert oneself.In condenser, vacuum declines, and the exhaust temperature of steam turbine also can be made to raise, cause the distortion of low pressure (LP) cylinder, not only affects the economy that power plant runs, and also directly affects the security of operation of Turbo-generator Set.The present invention proposes for this problem, with minute quantity targetedly, specific chemical, online chemistry accurately a kind of technical method of cleaning is realized to incrustation scale in shell and tube water cooler and spot.
Below, for plant condenser, the method for similar on-line cleaning the present invention and power plant commonly used is carried out one and is compared:
1) condenser ball cleaning method (this method is power plant's standard configuration): then drop into a large amount of glueballs at condenser water, glueballs flows with recirculated water, pass through heat exchange tube of condenser, exchange heat pipe cleans, although it can play the effect of certain scale removal, but due to glueballs can not too greatly, too hard otherwise be difficult to by heat exchange tube of condenser, but too little, too soft, can descale effect be affected again, cause the glueballs rate of recovery to reduce.In addition, rubber ball cleaning method also depends on the flow velocity of recirculated water, winter, circulating water temperature was low, flow can not be large, otherwise can produce hot-well depression, causes unit operation economy to decline, the decline of flow causes the decline of water flow velocity in heat exchanger tube, rubber ball cleaning effect declines, and condenser clean rate declines, and minimumly reaches 0.4 (design load 0.85).Do the system of recirculated water for water in employing, effect is just poorer, therefore how to make good use of the difficult problem that glueballs is also puzzlement power plant always.A large amount of articles about glueballs improvement can be found at more than CNK and just demonstrate this point, but same problem there will be again after running a period of time after transformation, rubber ball cleaning inherently Existence dependency recirculated water flow velocity is described, ball collecting rate and cleaning performance are difficult to satisfactory to both parties significant deficiency.
2) condenser in-site chemical cleaning method: now power plant capital without exception adds a large amount of chemicals (mainly acid, corrosion inhibiter and algicide are that neutralization discharge also will add a large amount of alkali), to stop the growth of heat exchanger tube fouling and algae substantially on the basis of dropping into rubber ball cleaning in condenser circulating water pool.Along with unit capacity increases, the circulating cooling water yield is increasing, 300MW unit is about 40000t/h, cooling tower circulating cooling evaporated quantity of water is about 2600t/h, 600MW, 1000MW unit is just more, in order to ensure scale inhibition, sterilization effect, maintain the low pH value of recirculated cooling water, chemical feeding quantity is well imagined, for 300MW unit, the expense of dosing in a year is about about 2,000,000 yuan.However, to employing in water (country have regulation electric power plant circulating water to adopt in water, to avoid adopting underground water) as the unit of circulating cooling water of power plant, effect is also not obvious, many units because of fouling seriously have to run duration carry out facing stop cleaning, to ensure the security of unit operation.
The subject matter of this cleaning method is: the chemical added, and is recycled recirculated water a large amount of in pond and dilutes, do not reach cleaning concentration far away to during heat exchange tube of condenser, has wasted a large amount of chemical.
Summary of the invention
Deficiency according to prior art exists: the utility model proposes that a kind of cleaning agent consumption is few, features high scale-removing effect, the online precise chemical structure descaling device of industrial shell and tube water cooler of zero-emission can be realized.
Technical solutions of the utility model realize by the following method:
The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler, comprise and be arranged on descaling agent liquid dispensing device outside cooler hydroecium and Servocontrol device, underwater positioning device and descaling agent injection device are installed in cooler hydroecium, underwater positioning device connects Servocontrol device by water-proof cable, descaling agent liquid dispensing device is by tubes connection descaling agent injection device, and described underwater positioning device is formed by connecting by two casings with vertical machine by Horizontal machine.
Described Horizontal machine is made up of two built-in mangneto displacement sensor cross cylinders, four slide units, two slide unit connecting rods, four slide units lay respectively at two slide unit connecting rod sides, the maximum moving range of each slide unit is the half of slide unit connecting rod, built-in mangneto displacement sensor cross cylinder is positioned on slide unit connecting rod, move for promoting slide unit, described vertical machine is made up of a upright guide rail, a vertical oil cylinder of built-in mangneto displacement sensor, and the mobile slide unit connecting rod that drives of casing moves up and down.
Described slide unit connecting rod and several supports be connected between upright guide rail for supporting upright guide rail.
Described descaling agent injection device, comprise descaling agent note mouth bracing frame, descaling agent note gonys plate, push pedal, two descaling agent note mouths, two cylinders, descaling agent note mouth bracing frame lower end is welded on slide unit, upper end connects descaling agent note gonys plate, descaling agent note gonys plate is provided with adapter cylinder, adapter cylinder is provided with cylinder, the top of cylinder is connected with push pedal, the push pedal left and right sides welds left support plate and right support plate respectively, in push pedal, the left and right sides connects base, descaling agent note mouth is through base, can stretch back and forth, the top of descaling agent note mouth is by nonmetal cover connecting rubber sealing cover, the contracting of cylinder, exoergic realizes sealing docking and the separating action of descaling agent note mouth and heat-exchange tube of cooler port.
Described left support plate and right support plate are provided with proximity transducer, are provided with spring between the top of descaling agent note mouth and base, realize the fine setting of descaling agent note mouth.
The beneficial effects of the utility model are:
A. cleaning cost is significantly reduced, reach zero-emission: such cleaning method, plant condenser heat exchanger tube (φ 23.5x11000) for maximum: the internal capacity of a heat exchanger tube only have 5L less than, adopt precise chemical structure cleaning chemical feeding quantity only less than 2/3L, avoiding chemical agent adds by the consequence of Macrodilution in recirculated water, significantly can reduce the use amount of chemical.Reach same cleaning performance through measuring and calculating, dosage can be reduced and reach more than 10 times.Significantly reduce cleaned cost while increased substantially cleaning performance.Due to less developer, chemical feeding quantity can be determined as the case may be again, chemical reaction fully completely can be guaranteed, and quantity of circulating water be more than ten thousand times of chemical feeding quantity, therefore can reach zero-emission completely.
B. the cleaning fluid of the present utility model cleaning concentration that only local has maintenance certain in one or a few heat exchanger tube, just in case flow out, due to more than ten thousand times that quantity of circulating water (for plant condenser) is chemical feeding quantity, be diluted to an extremely low concentration (ten thousand/several) at once and can flow through other auxiliary equipment such as circulating water pipeline, water circulating pump, radiator tube plate by the chemical completely not with concentration than similar chemical on-line cleaning method, thus avoid the corrosion failure to them thoroughly.
C. novel descaling agent note mouth is adopted, than before propose " on-line cleaning power plant steam condenser using high pressure water jet device people technology " (referring to patent: ZL200510037864.1), run outside a descaling agent note mouth heat exchange tube inlet of the present invention, eliminate high-pressure hose and shower nozzle and enter action in heat exchanger tube, decrease coil system, the folding and unfolding action of mesohigh flexible pipe is run without ' high pressure water-jet cleaner device people ', simplify apparatus and control difficulty, effectively prevent card pipe, don't bother about unsafe factor by the time, significantly improve property safe and reliable to operation.Therefore, not only can apply in plant condenser, go back easily extensible and apply to other industrial chiller.
D. underwater positioning device of the present invention, can adopt hydraulic pressure frame-type underwater positioning device to form, than old joint type underwater robot, can realize many shower nozzles, multiple spot cleans simultaneously, is convenient to clean the realization that shower nozzle motion path controls, substantially reduces scavenging period; Due to the high pressure of hydraulic means self, the characteristic of good seal, effectively solve the problem of " prosthetic robot " dynamic seal (packing), improve operational reliability; Its structure is more simple, and area coverage is substantially without dead band; Self-locking property is good, anti-vibration, stability are high, and underwater portion is more conducive to the security of underwater operation without electrical equipment, is convenient to clean the realization that shower nozzle motion path controls, has better practicality.
As mentioned above, the utility model, under the prerequisite realizing zero-emission, improves equipment reliability of operation, while considerably reducing cooler cleaning cost, increased substantially again cleaning performance (can keep cooler clean rate in real time).Achieve double goal that is energy-conservation, that reduce discharging, in this area, therefore have good and application prospect widely.
Accompanying drawing explanation
Fig. 1 is the utility model positioning device structure and system construction figure;
Fig. 2 is the utility model descaling agent injection device top view;
Fig. 3 is the utility model descaling agent injection device left view;
Fig. 4 is the utility model descaling agent injection device front view;
1-descaling agent liquid dispensing device, 2-heat-exchange tube of cooler, 3-descaling agent injection device, 4-slide unit, 5-slide unit connecting rod, 6-Horizontal machine, 7-support, 8-Servocontrol device, 9-upright guide rail, 10-casing, 11-cross cylinder, 12-cooler hydroecium, the vertical oil cylinder of 13-, the vertical machine of 14-, 15-rubber sealing boot, the nonmetal cover of 16-, 17-push pedal, 18-left support frame, 19-base, 20-descaling agent note mouth, 21-descaling agent note gonys plate, 22-adapter cylinder, 23-descaling agent note mouth bracing frame, 24-right support frame, 25-cylinder, 26-spring.
Detailed description of the invention
Below in conjunction with accompanying drawing, by specific embodiment, technical solutions of the utility model are described further.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, Fig. 1 is the utility model positioning device structure and system construction figure, Fig. 2 is the utility model descaling agent injection device top view, and Fig. 3 is the utility model descaling agent injection device left view, and Fig. 4 is the utility model descaling agent injection device front view.
The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler, comprise the descaling agent liquid dispensing device 1 be arranged on outside cooler hydroecium 12, Servocontrol device 8, underwater positioning device, descaling agent injection device 3 are installed in cooler hydroecium 12, underwater positioning device connects Servocontrol device 8 by water-proof cable, and descaling agent liquid dispensing device 1 is by tubes connection descaling agent injection device 3.
Descaling agent liquid dispensing device, is made up of cleaning agent preparing tank, dosing pump and valve, can buy approved product.
Underwater positioning device, depending on technical conditions can adopt hydraulic pressure frame-type, electronic articulated type or other form can lower term underwater run, the mechanical device of repetitive positioning accuracy <1mm realizes.
Underwater positioning device is formed by connecting by two casings 10 with vertical machine 14 by Horizontal machine 6.
Horizontal machine 6 is made up of two built-in mangneto displacement sensor cross cylinders, 11, four slide units, 4, two slide unit connecting rods 5, four slide units 4 lay respectively at two slide unit connecting rod 5 sides, the maximum moving range of each slide unit 4 is the half of slide unit connecting rod, built-in mangneto displacement sensor cross cylinder 11 is positioned on slide unit connecting rod 5, move for promoting slide unit 4, described vertical machine 14 is made up of a upright guide rail 9, vertical oil cylinder 13 of built-in mangneto displacement sensor, and the mobile slide unit connecting rod 5 that drives of casing 10 moves up and down.
Four supports 7 for supporting upright guide rail 9 are connected between slide unit connecting rod 5 with upright guide rail 9.
Descaling agent injection device 3, comprise descaling agent note mouth bracing frame 23, descaling agent note gonys plate 21, push pedal 17, two descaling agent note mouths 20, two cylinders 25, descaling agent note mouth bracing frame 23 lower end is welded on slide unit 4, upper end connects descaling agent note gonys plate 21, descaling agent note gonys plate 21 is provided with adapter cylinder 22, adapter cylinder 22 is provided with cylinder 25, the top of cylinder 25 is connected with push pedal 17, push pedal 17 left and right sides welds left support plate 18 and right support plate 24 respectively, in push pedal 17, the left and right sides connects base 19, descaling agent note mouth 20 is through base 19, realize back flexible, the top of descaling agent note mouth 20 is by nonmetal cover 16 connecting rubber sealing cover 15, the contracting of cylinder 25, exoergic realizes sealing docking and the separating action of descaling agent note mouth 20 and heat-exchange tube of cooler 2 port.
Left support plate 18 and right support plate 24 are provided with proximity transducer, are provided with spring 26 between the top of descaling agent note mouth 20 and base 19, realize the fine setting of descaling agent note mouth 20.
Claims (5)
1. the online precise chemical structure descaling device of industrial shell and tube water cooler, is characterized in that: comprise and be arranged on the outer descaling agent liquid dispensing device (1) of cooler hydroecium (12) and Servocontrol device (8); Underwater positioning device and descaling agent injection device (3) are installed in described cooler hydroecium (12), underwater positioning device connects Servocontrol device (8) by water-proof cable, and descaling agent liquid dispensing device (1) is by tubes connection descaling agent injection device (3); Described underwater positioning device is formed by connecting by two casings (10) with vertical machine (14) by Horizontal machine (6).
2. the online precise chemical structure descaling device of one according to claim 1 industrial shell and tube water cooler, it is characterized in that: described Horizontal machine (6) is by two built-in mangneto displacement sensor cross cylinders (11), four slide units (4), two slide unit connecting rod (5) compositions, four slide units (4) lay respectively at two slide unit connecting rod (5) sides, the maximum moving range of each slide unit (4) is the half of slide unit connecting rod, built-in mangneto displacement sensor cross cylinder (11) is positioned on slide unit connecting rod (5), mobile for promoting slide unit (4), described vertical machine (14) is by a upright guide rail (9), the vertical oil cylinder of built-in mangneto displacement sensor (13) composition, mobile slide unit connecting rod (5) that drives of casing (10) moves up and down.
3. the online precise chemical structure descaling device of one according to claim 2 industrial shell and tube water cooler, is characterized in that: described slide unit connecting rod (5) and several supports (7) be connected between upright guide rail (9) for supporting upright guide rail (9).
4. the online precise chemical structure descaling device of one according to claim 1 industrial shell and tube water cooler, it is characterized in that: described descaling agent injection device (3), comprise descaling agent note mouth bracing frame (23), descaling agent note gonys plate (21), push pedal (17), two descaling agents note mouth (20), two cylinders (25), descaling agent note mouth bracing frame (23) lower end is welded on slide unit (4), upper end connects descaling agent note gonys plate (21), descaling agent note gonys plate (21) is provided with adapter cylinder (22), adapter cylinder (22) is provided with cylinder (25), the top of cylinder (25) is connected with push pedal (17), push pedal (17) left and right sides welds left support plate (18) and right support plate (24) respectively, the upper left and right sides of push pedal (17) connects base (19), descaling agent note mouth (20) is through base (19), can stretch back and forth, the top of descaling agent note mouth (20) is by nonmetal cover (16) connecting rubber sealing cover (15), the contracting of cylinder (25), exoergic realizes sealing docking and the separating action of descaling agent note mouth (20) and heat-exchange tube of cooler (2) port.
5. the online precise chemical structure descaling device of one according to claim 4 industrial shell and tube water cooler, it is characterized in that: described left support plate (18) and right support plate (24) are provided with proximity transducer, be provided with spring (26) between the top of descaling agent note mouth (20) and base (19), realize the fine setting of descaling agent note mouth (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551398.3U CN204085309U (en) | 2014-09-24 | 2014-09-24 | The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420551398.3U CN204085309U (en) | 2014-09-24 | 2014-09-24 | The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler |
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| CN204085309U true CN204085309U (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420551398.3U Withdrawn - After Issue CN204085309U (en) | 2014-09-24 | 2014-09-24 | The online precise chemical structure descaling device of a kind of industrial shell and tube water cooler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251644A (en) * | 2014-09-24 | 2014-12-31 | 彭伟 | Online precision chemical descaling device and method of industrial tube nest type water cooler |
| CN106288937A (en) * | 2015-05-27 | 2017-01-04 | 陈来福 | A kind of plant condenser on-line auto-cleaning robot |
-
2014
- 2014-09-24 CN CN201420551398.3U patent/CN204085309U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251644A (en) * | 2014-09-24 | 2014-12-31 | 彭伟 | Online precision chemical descaling device and method of industrial tube nest type water cooler |
| CN106288937A (en) * | 2015-05-27 | 2017-01-04 | 陈来福 | A kind of plant condenser on-line auto-cleaning robot |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160907 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |