CN201193818Y - Recovery device for vapor condensation water of boiler - Google Patents
Recovery device for vapor condensation water of boiler Download PDFInfo
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- CN201193818Y CN201193818Y CNU2008200937387U CN200820093738U CN201193818Y CN 201193818 Y CN201193818 Y CN 201193818Y CN U2008200937387 U CNU2008200937387 U CN U2008200937387U CN 200820093738 U CN200820093738 U CN 200820093738U CN 201193818 Y CN201193818 Y CN 201193818Y
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- boiler
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Abstract
The utility model relates to a boiler steam condensed-water recycling device, which comprises a condensed-water recycling pipe, a water storage tank, a water pump and a condensed-water outlet pipe, wherein, the condensed-water recycling pipe is communicated with the water storage tank; the water storage tank is communicated with the water inlet of the water pump; the water outlet of the water pump is communicated with the condensed-water outlet pipe, and the water pump is a centrifugal frequency-conversion water pump; the water storage tank is a sealed water storage tank; an electric-control valve is arranged between the sealed water storage tank and the centrifugal frequency-conversion water pump; a time-delay circuit device that controls the delay opening of the electric-control valve after the centrifugal frequency-conversion water pump is started is arranged between the sealed water storage tank and the centrifugal frequency-conversion water pump. The closed condensed-water recycling technology is adopted, so that the high-temperature high-pressure condensed water can be pumped into the boiler, and the sealing element of the water pump can be prevented from being damaged; remarkable economic benefit and environmental protection benefit can be produced; the recycling device is particularly applicable to the collection of the tail gas of the corrugated paper board production line boiler.
Description
Technical field
The utility model belongs to a kind of boiler fixture, is specifically related to a kind of device of recovery boiler steam condensed water.
Background technology
As everyone knows, steam boiler is the rich and influential family of China's power consumption water consumption.The high steam that steam boiler produces, after gas utilization unit used, the condensate water of discharging contained appreciable residual heat resources, and water quality is good, and condensed water is bordering on pure distilled water, can be directly as boiler feedwater.Therefore the condensate water recovery is an important energy saving measure, but most of enterprises all run into technical difficulty in the condensate water removal process, the condensed water of special corrugated paper board production line boiler, it reclaims difficulty especially, one of them reason is to have very high pressure from the condensed water itself that the corrugated paper board production line steam generator system discharges, and the condensed water of these high pressure must be pressed into boiler by high-pressure hydraulic pump, but impact and compressing that the potted component around the general water pump rotating shaft is difficult to bear water under high pressure, water pump can't normally start work substantially, and water pump is very easily damaged.Therefore, existing most steam generator systems, special corrugated paper board production line boiler all adopts open condensation water recovery system.So-called open recovery is meant with the condensed water of hot equipment generation and directly guides in the cement pit or iron flask that is communicated with atmosphere by the condensed water recovery tube, adds then below the water for cooling to 70 ℃, is transported to boiler with water pump again by the condensed water outlet pipe again; Wherein the condensed water recovery tube is connected with condensed water delivery outlet with hot equipment, and the condensed water outlet pipe then is connected to the water inlet of boiler.But above-mentioned open recovery method only can reclaim condensed water small part heat, and condensed water contacts with atmosphere in removal process, cause secondary pollution, impurity, oxygen in the water significantly increase, lost the fine quality that condensed water is similar to distilled water, must soften again, water conditioning process such as deoxygenation.
Summary of the invention
The purpose of this utility model is to be to overcome above-mentioned shortcoming and a kind of boiler steam condensate apparatus for recovering is provided, and it can be fed into the condensate pump of HTHP boiler, and can avoid damaging the potted component of water pump.
For realizing above purpose, boiler steam condensate apparatus for recovering of the present utility model comprises condensed water recovery tube, water tank, water pump, condensed water outlet pipe, the condensed water recovery tube is communicated to water tank, water tank is communicated to the water inlet of water pump, the delivery port of water pump is communicated to the condensed water outlet pipe, its main feature is that described water pump is centrifugal variable frequency pump; Described water tank is the sealing water tank; Between sealing water tank and centrifugal variable frequency pump, be provided with an electric control valve.
Be provided with a control electric control valve starts the back Time Delay Opening at centrifugal variable frequency pump delay circuit device.After this delay circuit device can make centrifugal variable frequency pump start a period of time in advance, the electric control valve Time Delay Opening that just lags behind.
Be provided with the control circuit that a control electric control valve is closed immediately when centrifugal variable frequency pump is shut down.When this control circuit can make centrifugal variable frequency pump shut down, electric control valve was closed immediately.
Described electric control valve is electropneumatic valve preferably.
The quantity of described sealing water tank has two, comprises the first sealing water tank and the second sealing water tank, and wherein the condensed water outlet pipe is connected with the water inlet of the first sealing water tank; Two pipeline connections that seal water tank by inverted u-shaped, the inlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the first sealing water tank, and the outlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the second sealing water tank; The outlet of inverted u-shaped pipeline is connected with steam jet ejector; The delivery port of the second sealing water tank directly is communicated with electric control valve.
The utlity model has following advantage and effect:
1, centrifugal variable frequency pump of the present utility model starts after a period of time in advance, electric control valve just can be opened, as long as centrifugal variable frequency pump do not start, centrifugal variable frequency pump just with the condensed water isolation of high pressure, make the potted component of centrifugal variable frequency pump can not be subjected to impact, the destruction of water under high pressure; And centrifugal variable frequency pump is when just starting, and centrifugal variable frequency pump is also temporarily isolated with the condensed water of high pressure.Because water pump is an exocentric structure, behind starting mode of pump, the centrifugal action of impeller makes the central area of rotating shaft form negative pressure gradually, and negative pressure constantly increases; Treat centrifugal variable frequency pump frequency converter through after a while wheel speed is driven reach certain numerical value after, delay circuit device just makes electric control valve open, make the condensed water of high pressure enter the water pump inner chamber, but water pump vane this moment rotation at a high speed, condensed water is thrown away by powerful centrifugal force once entering the water pump inner chamber, so water pump high-strength hydraulic pressure can not occur near the central area of rotating shaft, and the potted component of water pump just is positioned at the central area of water pump near rotating shaft, thereby the high-strength hydraulic pressure of extraneous condensed water can not damage the potted component of water pump.
For above-mentioned reasons, the structure that the utility model adopts centrifugal variable frequency pump to cooperate with electric control valve makes can be in the high-strength hydraulic pressure system normal startup work of water pump, high pressure condensation hydraulic pressure can be fed into boiler, and avoid high-strength hydraulic pressure infringement water pump packing element.And then, because the utility model can enter boiler with the direct pumping of high pressure condensed water, all the time in closed system, carry out so could realize the process that the high pressure condensed water reclaims, be in high hydraulic pressure state in the removal process always, bring many obvious economic effects like this:
(1), owing to adopts closed recovery system, significantly reduced the thermal loss of boiler exhaust gas, the heat that tail gas is contained reclaims substantially fully, condensed water recovered temperature height (reaching as high as about 170 ℃), energy savings significantly, fuel savings is more than 20%, and helps guaranteeing that boiler pressure is stable;
(2), owing to adopt closed recovery system, the removal process condensate water is in the state with air insulated always, do not contact with air, make that this part condensed water can be not contaminated, reduce new harmful components and enter recovery system, fundamentally avoided corrosive gas to dissolve in boiler feedwater again, make boiler feedwater can keep good quality, correspondingly reduced boiler feedwater water quality has been softened, disposal costs such as deoxygenation, greatly alleviated corrosion to hot equipment and pipe network, fouling obviously reduces, and has prolonged the service life of boiler plant and pipe network, and also avoids the particularly corrosion of water pump packing element of water pump.And avoid corrosion to the water pump packing element, help again conversely guaranteeing to realize that high pressure condensation water seal formula reclaims, above-mentioned both be synergistic;
(3), owing to adopt closed recirculation system, the cyclic utilization rate of water is high, water saving reaches more than 95%, saved water resource effectively, as the not leakage of taking into account system, can realize boiler carbonated drink balance in theory, just promptly the boiler vapour that produces how much weight can return the water of how much weight.
In a word, the utility model adopts closed condensate water recovery technology can produce remarkable economic efficiency and environmental benefit, is particularly suitable for the exhaust collection of corrugated paper board production line boiler.Certainly, the utility model also is fit to the boiler exhaust gas of other production lines such as dyeing and finishing, papermaking is collected, and collect more calm.
2, when centrifugal variable frequency pump was shut down, electric control valve was closed immediately, and centrifugal variable frequency pump and high pressure condensed water are isolated immediately, made the potted component of centrifugal variable frequency pump can not be subjected to impact, the destruction of water under high pressure.
3, the utility model noise is low, vibrations are little, improves working environment.
4, the utility model adopts two-stage sealing water tank, and two-stage sealing water tank gets up by the pipeline connection of inverted u-shaped, and the pipeline both ends open of inverted u-shaped lays respectively at bottom, two jars of chambeies; And in the course of the work, the water liquid major sedimentary of the stream-liquid two-phase flow in two jars of chambeies is in bottom, jar chamber, helping making the stream-liquid two-phase flow that enters the inverted u-shaped pipeline mainly is liquid stream, also helping stream-liquid two-phase flow liquefies rapidly at the second sealing water tank, therefore said structure of the present utility model can make the stream-liquid two-phase flow volume of condensed water shrink rapidly, pressure descends rapidly, condensed water in the steaming plant can be discharged rapidly, improve steaming plant productivity ratio, also more help the water pump operate as normal simultaneously.
Description of drawings
Fig. 1 is the syndeton schematic diagram of a kind of specific embodiment of the utility model.
The specific embodiment
Boiler steam condensate apparatus for recovering shown in Figure 1 comprises condensed water recovery tube 1, sealing water tank, centrifugal variable frequency pump 8, condensed water outlet pipe 4, and the water inlet end of condensed water recovery tube 1 links to each other with the gas utilization unit of corrugated paper board production line.The quantity of sealing water tank has two, comprises the first sealing water tank 2 and the second sealing water tank 3, and wherein the water side of condensed water outlet pipe 1 is connected with the water inlet of the first sealing water tank 2; Two seal the pipeline that is provided with inverted u-shaped between the water tank, and two sealing water tanks get up by the inverted u-shaped pipeline connection; The inverted u-shaped pipeline is formed by connecting by three sections pipes 21,6,31, wherein first section the pipe 21 be positioned at first the sealing water tank 2 inner chamber, the 3rd section pipe 31 is positioned at the inner chamber of the second sealing water tank 3, second section pipe 6 couples together 21 and the 3rd sections pipes 31 of first section pipe, three sections pipes 21,6,31 connect the back and form the inverted u-shaped pipeline, the inlet 211 of inverted u-shaped pipeline is positioned at the lower port of first section pipe 21, also is positioned at the intracavity bottom of the first sealing water tank; The outlet of inverted u-shaped pipeline is positioned at the lower end of the 3rd section pipe 31, also is positioned at the intracavity bottom of the second sealing water tank; The outlet of inverted u-shaped pipeline is provided with steam jet ejector 7; The delivery port of the second sealing water tank 3 directly is communicated with electropneumatic valve 5, and electropneumatic valve 5 directly is communicated with centrifugal variable frequency pump 8, and the delivery port of centrifugal variable frequency pump 8 is communicated to condensed water outlet pipe 4, and condensed water outlet pipe 4 is communicated with the water inlet of boiler 9.
This boiler steam condensate apparatus for recovering also is provided with the delay circuit device of control electric control valve Time Delay Opening after centrifugal variable frequency pump starts, and this delay circuit device can be the time relay, also can be micro computer, single-chip microcomputer etc.This boiler steam condensate apparatus for recovering also is provided with the control circuit that a control electric control valve is closed immediately when centrifugal variable frequency pump is shut down.
During the foregoing description work, after high-pressure hydraulic pump 8 starts and reaches certain rotating speed, electropneumatic valve 5 is opened, the tail gas that the gas utilization unit of corrugated paper board production line produces at first is sent to condensed water recovery tube 1, send in the first sealing water tank 2 by condensed water recovery tube 1, condensed water enters the inverted u-shaped pipeline by the inlet 211 of the lower end of first section pipe 21 then, through first section pipe 21, second section pipe 6, the 3rd section pipe 31, by steam jet ejector 7 ejections, enter the second sealing water tank 3, by the delivery port process electropneumatic valve 5 of the second sealing water tank 3, through pressurization, send into boiler 9 by condensed water outlet pipe 4 by high-pressure hydraulic pump 8.When centrifugal variable frequency pump is shut down, electropneumatic valve 5 is closed immediately, cuts off the path of centrifugal variable frequency pump and the second sealing water tank, 3 mesohigh condensed waters.
Claims (7)
1. boiler steam condensate apparatus for recovering, comprise condensed water recovery tube, water tank, water pump, condensed water outlet pipe, the condensed water recovery tube is communicated to water tank, water tank is communicated to the water inlet of water pump, the delivery port of water pump is communicated to the condensed water outlet pipe, it is characterized in that: described water pump is centrifugal variable frequency pump; Described water tank is the sealing water tank; Between sealing water tank and centrifugal variable frequency pump, be provided with an electric control valve.
2. boiler steam condensate apparatus for recovering according to claim 1 is characterized in that: be provided with the control electric control valve starts the back Time Delay Opening at centrifugal variable frequency pump delay circuit device.
3. boiler steam condensate apparatus for recovering according to claim 1 and 2 is characterized in that: be provided with the control circuit that a control electric control valve is closed when centrifugal variable frequency pump is shut down immediately.
4. boiler steam condensate apparatus for recovering according to claim 1 and 2 is characterized in that: described electric control valve is an electropneumatic valve.
5. boiler steam condensate apparatus for recovering according to claim 3 is characterized in that: described electric control valve is an electropneumatic valve.
6. boiler steam condensate apparatus for recovering according to claim 1 and 2, it is characterized in that: the quantity of described sealing water tank has two, comprise the first sealing water tank and the second sealing water tank, wherein the condensed water outlet pipe is connected with the water inlet of the first sealing water tank; Two pipeline connections that seal water tank by inverted u-shaped, the inlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the first sealing water tank, and the outlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the second sealing water tank; The outlet of inverted u-shaped pipeline is connected with steam jet ejector; The delivery port of the second sealing water tank directly is communicated with electric control valve.
7. boiler steam condensate apparatus for recovering according to claim 3, it is characterized in that: the quantity of described sealing water tank has two, comprise the first sealing water tank and the second sealing water tank, wherein the condensed water outlet pipe is connected with the water inlet of the first sealing water tank; Two pipeline connections that seal water tank by inverted u-shaped, the inlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the first sealing water tank, and the outlet of inverted u-shaped pipeline is positioned at the intracavity bottom of the second sealing water tank; The outlet of inverted u-shaped pipeline is connected with steam jet ejector; The delivery port of the second sealing water tank directly is communicated with electric control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200937387U CN201193818Y (en) | 2008-04-24 | 2008-04-24 | Recovery device for vapor condensation water of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200937387U CN201193818Y (en) | 2008-04-24 | 2008-04-24 | Recovery device for vapor condensation water of boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193818Y true CN201193818Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200937387U Expired - Fee Related CN201193818Y (en) | 2008-04-24 | 2008-04-24 | Recovery device for vapor condensation water of boiler |
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| Country | Link |
|---|---|
| CN (1) | CN201193818Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120222A (en) * | 2016-08-19 | 2016-11-16 | 湖州新仲湖针织制衣有限公司 | A kind of waste-heat recovery device steaming a system |
| CN109282270A (en) * | 2018-09-06 | 2019-01-29 | 河南省新斗彩印刷有限公司 | Corrugated paper board production line condensed water negative pressure recovery system |
| CN113623630A (en) * | 2021-06-28 | 2021-11-09 | 成都众奇化工有限公司 | Boiler steam closed circulation system |
-
2008
- 2008-04-24 CN CNU2008200937387U patent/CN201193818Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120222A (en) * | 2016-08-19 | 2016-11-16 | 湖州新仲湖针织制衣有限公司 | A kind of waste-heat recovery device steaming a system |
| CN106120222B (en) * | 2016-08-19 | 2018-04-20 | 湖州新仲湖针织制衣有限公司 | A kind of waste-heat recovery device of steaming silk system |
| CN109282270A (en) * | 2018-09-06 | 2019-01-29 | 河南省新斗彩印刷有限公司 | Corrugated paper board production line condensed water negative pressure recovery system |
| CN113623630A (en) * | 2021-06-28 | 2021-11-09 | 成都众奇化工有限公司 | Boiler steam closed circulation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20170424 |