CN201412830Y - Water supply system for boilers - Google Patents
Water supply system for boilers Download PDFInfo
- Publication number
- CN201412830Y CN201412830Y CN2009201272169U CN200920127216U CN201412830Y CN 201412830 Y CN201412830 Y CN 201412830Y CN 2009201272169 U CN2009201272169 U CN 2009201272169U CN 200920127216 U CN200920127216 U CN 200920127216U CN 201412830 Y CN201412830 Y CN 201412830Y
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- water
- boiler
- pump
- oxygen
- water supply
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Abstract
The utility model relates to a water supply system for boilers. The water supply system comprises a water tank (1), a water supply pump (4), a deaerator (2) and a feed water pump (5), which are connected in turn, wherein the water outlet of the feed water pump (5) is respectively connected with a water inlet of a boiler and a water inlet of the deaerator (2) through a water outlet pipeline (8) anda return pipeline (6). The water supply system is characterized in that a water jet pump (3) is further arranged on the return pipeline (6), and the water inlet of the water jet pump (3) is connectedwith the water tank (1) through a pumping pipeline (7). Through adopting the deaerator water supply system, the problem of energy source waste in the return decompression process of the lowest waterfeed flow of the boiler is solved, the return pressure energy of the boiler can be effectively utilized, simultaneously, the electric energy consumption in the process of water supply of the deaeratoris reduced, and the energy consumption of a boiler system is reduced.
Description
Technical field
The utility model relates to a kind of water supply system of boiler, particularly a kind of water supply system that is applicable to the converter waste heat boiler.
Background technology
At present, enter the water in the Industrial Boiler, must be through deoxygenation, make oxygen content in the feedwater be no more than the permissible value of boiler, the accelerated corrosion that oxygen content exceeds standard otherwise boiler will be subjected to feeding water causes the boiler shortening or the boiler breakdowns in service life.Existing boiler supply water deaerating generally adopts heating power type oxygen-eliminating device, and it is during according to the saturation temperature of water under reaching corresponding pressure, and the principle that oxygen can be separated out from water automatically realizes.
In the feed water system of boiler, for preventing that feed pump is overheated and cavitation takes place, feedwater flow under any circumstance all must be greater than bare flow, i.e. a minimum discharge.When boiler needs confluent very little, need in time draw a part of feedwater, to ensure to the minimum discharge of exit of pump,, the part boiler feedwater drawn be back to oxygen-eliminating device so the pump discharge pipeline is provided with the feedwater reflux line.
In converter waste heat boiler water supply system, be subjected to the influence of process for making, the thermic load of waste heat boiler is to be periodically variable, the required confluent of boiler also is periodically, for avoiding the frequent start-stop feed pump, protection equipment, the feedwater reflux line of converter waste heat boiler need keep normally open; Meanwhile, the outer confession and blowdown because waste heat boiler steams needs continually or incessantly to the additional new water of steam generator system, near the water tank new water is normally taken from is sent into oxygen-eliminating device by small pump.
Because recirculation water is the high-pressure feed water after the feed pump pressurization, before getting back to oxygen-eliminating device, pressure of return water must be reduced to adapt to the need of work of oxygen-eliminating device.The at present employing is provided with devices such as recycle valve, stop valve, choke valve more on return line, realize that by methods such as multi-level throttle, increase flow resistances feedwater refluxes, though these methods are practical, also caused a large amount of wastes of high-pressure feed water static energy simultaneously.
Summary of the invention
The purpose of this utility model just provides a kind of energy-conservation boiler replenishing water system, and it can effectively utilize the pressure energy of high speed recirculation water.
The purpose of this utility model is to realize by such technical scheme, comprise the water tank, small pump, oxygen-eliminating device and the feed pump that connect successively, wherein the delivery port of feed pump is connected with the water inlet of boiler and the water inlet of oxygen-eliminating device with reflux line by outlet conduit respectively, have additional water-jet pump on reflux line, the water inlet of described water-jet pump is connected with water tank by pumping conduit.
Enter discharge in the oxygen-eliminating device for the ease of observation, on the pipeline between small pump and the oxygen-eliminating device, also be provided with the refill flow meter that is connected with this pipeline; Enter into discharge in the oxygen-eliminating device for the ease of control, on the pipeline between small pump and the oxygen-eliminating device, also can be provided with the moisturizing control valve that is connected with this pipeline.
Enter into discharge in the boiler for the ease of observation, outlet conduit is provided with feed meter.
For pressure of return water is reduced to adapt to the need of work of oxygen-eliminating device, reflux line is provided with the backwater control valve.
Owing to adopted technique scheme, the utlity model has following advantage:
1. the employing water-jet pump has solved the problem of energy waste in the boiler feedwater minimum discharge backflow decompression process, and its backflow pressure energy has been carried out effective utilization;
2. adopt refill flow meter and moisturizing control valve, can measure new supplementing water flow accurately, and can regulate new supplementing water at any time and enter flow in the oxygen-eliminating device;
3. the employing feed meter can obtain being sent to the feedwater flow in the boiler accurately;
4. adopt the backwater control valve, make pressure of return water reduce, adapted to the need of work of oxygen-eliminating device;
In a word, adopt this oxygen-eliminating device water charging system, not only solved the problem of energy waste in the boiler feedwater minimum discharge backflow decompression process, its backflow pressure energy has been carried out effective utilization, replenish power consumption in the new water process but also reduced simultaneously, reduced the energy consumption of steam generator system at oxygen-eliminating device.
Description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is a structural representation of the present utility model;
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Embodiment 1: as shown in Figure 1, a kind of water charging system that is used for boiler, comprise the water tank 1, small pump 4, oxygen-eliminating device 2 and the feed pump 5 that connect successively, wherein the delivery port of feed pump 5 is connected with the water inlet of boiler and the water inlet of oxygen-eliminating device 2 with reflux line 6 by outlet conduit 8 respectively, have additional water-jet pump 3 on reflux line 6, the water inlet of described water-jet pump 3 is connected with water tank 1 by pumping conduit 7.On the pipeline between small pump 4 and the oxygen-eliminating device 2, also be provided with refill flow meter 21 and the moisturizing control valve 11 that is connected with this pipeline.On outlet conduit 8, also be provided with feed meter 23.On reflux line, also be provided with backwater control valve 12.
Operation principle of the present utility model is as follows: the new water of boiler at interface b place enters water tank 1 by the water treatment station supply, when boiler startup, new water is sent into oxygen-eliminating device 2 by small pump 4, after oxygen-eliminating device 2 deoxygenations, be sent to boiler interface a by feed pump 5, in this simultaneously, the part feedwater refluxes through control valve 12 through backwater and enters water-jet pump 3, water-jet pump 3 utilizes the pressure energy of high pressure reflow water, extract the new water in the water tank 1, be converted to kinetic energy at water-jet pump 3 mesohigh recirculation water pressure and form the high speed recirculation water, mixing chamber at water-jet pump 3 forms negative pressuren zone, by negative pressure the new water in the water tank 1 is extracted into, in water-jet pump latter end diffusion chambers 3, mixed feedwater is converted into potential energy with kinetic energy, has certain pressure, overcomes the resistance damage and the water supply discrepancy in elevation of moisturizing control valve 11 and pipeline, enter oxygen-eliminating device 2, formed the self-loopa of feedwater backwater and oxygen-eliminating device 2 moisturizings.After normal operation of boiler, control valve 12 often leaves, and when the feedwater capacity of returns and the new water yield of water-jet pump 3 extractions reached boiler carbonated drink aequum, small pump 4 can be stopped transport or be reduced the platform number that puts into operation.
Simultaneously, backwater control valve 12, moisturizing control valve 11 can be according to deaerator level meter 22, refill flow meter 21, feed meter 23 chain control backflow and oxygen-eliminating device refill flow, and according to flow and water level situation, start and stop small pump 4 is assisted moisturizing in good time.
In order to make the water in the oxygen-eliminating device 2 can supply many boilers simultaneously, many feed pumps 5 can be set, when being provided with many feed pumps 5,, many water-jet pumps 3 that are complementary with feed pump 5 can be set accordingly in order effectively to utilize the pressure energy of high speed recirculation water.
Claims (4)
1. water charging system that is used for boiler, comprise the water tank (1), small pump (4), oxygen-eliminating device (2) and the feed pump (5) that connect successively, wherein the delivery port of feed pump (5) is connected with the water inlet of boiler and the water inlet of oxygen-eliminating device (2) with reflux line (6) by outlet conduit (8) respectively, it is characterized in that: have additional water-jet pump (3) on reflux line (6), the water inlet of described water-jet pump (3) is connected with water tank (1) by pumping conduit (7).
2. the water charging system that is used for boiler as claimed in claim 1 is characterized in that: small pump (4) and pipeline between the oxygen-eliminating device (2) are provided with the refill flow meter (21) that is connected with this pipeline or/and moisturizing control valve (11).
3. the water charging system that is used for boiler as claimed in claim 1 or 2 is characterized in that: outlet conduit (8) is provided with feed meter (23).
4. the water charging system that is used for boiler as claimed in claim 3 is characterized in that: reflux line (6) is provided with backwater control valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201272169U CN201412830Y (en) | 2009-05-04 | 2009-05-04 | Water supply system for boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201272169U CN201412830Y (en) | 2009-05-04 | 2009-05-04 | Water supply system for boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412830Y true CN201412830Y (en) | 2010-02-24 |
Family
ID=41714713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201272169U Expired - Lifetime CN201412830Y (en) | 2009-05-04 | 2009-05-04 | Water supply system for boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412830Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090360A (en) * | 2011-11-02 | 2013-05-08 | 李建锋 | Energy recovery method of thermal power plant heat regenerative system |
| CN103406049A (en) * | 2013-08-22 | 2013-11-27 | 河南豫光锌业有限公司 | Powdered activated carbon charging method and powdered activated carbon charging device |
| CN105605554A (en) * | 2016-03-21 | 2016-05-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensation water replenishing method and device for 300MW and above thermal power generator sets |
| CN106195999A (en) * | 2016-08-30 | 2016-12-07 | 江苏太湖锅炉股份有限公司 | The low discharge water replanishing device of steam generator system |
| CN106594779A (en) * | 2016-11-29 | 2017-04-26 | 无锡市锡源锅炉有限公司 | Biofuel boiler smoke discharge afterheat utilization system |
| CN110397909A (en) * | 2019-08-20 | 2019-11-01 | 华能国际电力股份有限公司 | Water supply feedforward control system and method based on feed pump recycle valve state |
| CN114893393A (en) * | 2022-04-21 | 2022-08-12 | 北京太阳宫燃气热电有限公司 | Exhaust device of water feeding pump of gas boiler |
-
2009
- 2009-05-04 CN CN2009201272169U patent/CN201412830Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090360A (en) * | 2011-11-02 | 2013-05-08 | 李建锋 | Energy recovery method of thermal power plant heat regenerative system |
| CN103406049A (en) * | 2013-08-22 | 2013-11-27 | 河南豫光锌业有限公司 | Powdered activated carbon charging method and powdered activated carbon charging device |
| CN103406049B (en) * | 2013-08-22 | 2015-07-22 | 河南豫光锌业有限公司 | Powdered activated carbon charging method and powdered activated carbon charging device |
| CN105605554A (en) * | 2016-03-21 | 2016-05-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Condensation water replenishing method and device for 300MW and above thermal power generator sets |
| CN106195999A (en) * | 2016-08-30 | 2016-12-07 | 江苏太湖锅炉股份有限公司 | The low discharge water replanishing device of steam generator system |
| CN106594779A (en) * | 2016-11-29 | 2017-04-26 | 无锡市锡源锅炉有限公司 | Biofuel boiler smoke discharge afterheat utilization system |
| CN110397909A (en) * | 2019-08-20 | 2019-11-01 | 华能国际电力股份有限公司 | Water supply feedforward control system and method based on feed pump recycle valve state |
| CN114893393A (en) * | 2022-04-21 | 2022-08-12 | 北京太阳宫燃气热电有限公司 | Exhaust device of water feeding pump of gas boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100224 |