CN111439809A - Boiler feed water control system - Google Patents
Boiler feed water control system Download PDFInfo
- Publication number
- CN111439809A CN111439809A CN202010226348.8A CN202010226348A CN111439809A CN 111439809 A CN111439809 A CN 111439809A CN 202010226348 A CN202010226348 A CN 202010226348A CN 111439809 A CN111439809 A CN 111439809A
- Authority
- CN
- China
- Prior art keywords
- water
- sodium ion
- ion exchanger
- tank
- water tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 229910001415 sodium ion Inorganic materials 0.000 claims abstract description 50
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 12
- 239000008399 tap water Substances 0.000 claims abstract description 7
- 235000020679 tap water Nutrition 0.000 claims abstract description 7
- 230000008929 regeneration Effects 0.000 claims description 13
- 238000011069 regeneration method Methods 0.000 claims description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 229910001424 calcium ion Inorganic materials 0.000 claims description 7
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 241000209094 Oryza Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 239000013589 supplement Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/34—Applications of valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/05—Conductivity or salinity
- C02F2209/055—Hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a boiler water supply control system, which comprises a water tank, a sodium ion exchanger, a salt tank, a wastewater tank and a controller, wherein a tap water pipe is connected with the sodium ion exchanger through an electromagnetic valve I, a water outlet of the sodium ion exchanger is respectively connected with the water tank and the wastewater tank through an electromagnetic valve II and an electromagnetic valve III, and a hardness detection sensor is arranged at a water outlet of the sodium ion exchanger; the waste water tank is connected with the sodium ion exchanger through a one-way valve and an electromagnetic valve I; the salt tank is connected with the sodium ion exchanger and the tap water pipeline. The invention ensures that the hardness of the boiler feed water reaches the standard, realizes stable hardness of the feed water quality, prevents scaling, improves the thermal efficiency of the boiler, and avoids the problems of pipe burst or pipe plate leakage and the like of a pipeline on a heating surface.
Description
Technical Field
The invention relates to a boiler water supply control system.
Background
The existing boiler often has the conditions of substandard water feeding hardness and unstable water feeding hardness, so that the boiler is scaled, the thermal efficiency of the boiler is reduced, and the problems of pipe burst or pipe plate leakage of a heating surface pipeline and the like are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the boiler feed water control system which can always provide standard water, and can save water and reduce emission.
A boiler water supply control system comprises a water tank, a sodium ion exchanger, a salt tank, a wastewater tank and a controller, wherein a tap water pipe is connected with the sodium ion exchanger through a solenoid valve I, a water outlet of the sodium ion exchanger is respectively connected with the water tank and the wastewater tank through a solenoid valve II and a solenoid valve III, and a hardness detection sensor is arranged at a water outlet of the sodium ion exchanger; the waste water tank is connected with the sodium ion exchanger through a one-way valve and an electromagnetic valve I; the salt tank is connected with the sodium ion exchanger and the tap water pipeline; the hardness detection sensor, the electromagnetic valve I, the electromagnetic valve II, the electromagnetic valve III and the one-way valve are respectively connected with the controller, the hardness detection sensor detects the concentration of calcium and magnesium ions in water and transmits signals to the controller in real time, the controller realizes whether the water passing through the sodium ion exchanger enters the water tank or not according to the concentration of the calcium and magnesium ions in the water, or the salt tank supplements the sodium ions to the sodium ion exchanger according to the concentration change of the calcium and magnesium ions in a certain time period in the water outlet, and the resin regeneration of the sodium ion exchanger is realized.
Further, be provided with level sensor in the water tank, when the water in the water tank is less than safe water level, control system is automatic to make water, wherein, the computational formula of water tank safe water level H is as follows:
the water tank is the cuboid, its safe water level: h ═ K × DT/ab, length, width, height, and height are a and b, respectively, and the unit is: rice;
the water tank is a cylinder, safe water level: h ═ K × DT/pi r2, radius r, in units of: rice;
the rated evaporation capacity of the boiler is D, and the unit is as follows: kg/h
The sodium ion regeneration time is T, and the unit is: h is
k is a safety factor k > 1.05.
Further, when the water tank is lower than the safe water level H, both the electromagnetic valve I and the electromagnetic valve III are opened, the city tap water or the water in the waste water tank enters the sodium ion exchanger, and the water hardness of the sodium ion exchanger does not reach the standard in 1-5min and is directly discharged into the waste water tank; if the detected hardness of the hardness detection sensor is always greater than the standard requirement after 1-5min, or the hardness is not decreased or increased inversely, the salt tank supplements sodium ions to the sodium ion exchanger, and the resin regeneration of the sodium ion exchanger is realized; after the hardness detection sensor detects that the hardness of the water reaches the standard, the controller opens the electromagnetic valve II and closes the electromagnetic valve III, and qualified water enters the water tank.
The invention has the beneficial effects that: the hardness of the feed water of the boiler is guaranteed to reach the standard, the water quality of the feed water is stable, scaling is prevented, the heat efficiency of the boiler is improved, and the problems of pipe burst or pipe plate leakage of a pipeline on a heating surface and the like are avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
Detailed Description
For a better understanding of the present invention, embodiments of the present invention are explained in detail below with reference to fig. 1.
The invention comprises a water tank 1, a sodium ion exchanger 2, a salt tank 3, a waste water tank 4 and a controller. A water supply control system is arranged on a water supply pipeline, the system carries out online detection on water hardness on the water supply pipeline, water quality meeting the boiler water supply standard is realized through the water supply control system, and the water enters a boiler water tank (namely a water tank 1) for standby. In the normal operation process of the boiler, water is fed into the boiler through the water feeding pump 8.
When the water level of the water tank is lower than the safe water level, the liquid level sensor 5 sends a signal, and the controller sends a series of instructions after receiving the signal, so that the water supply requirement of the boiler is met. The safe water level of the water tank means that water in the water tank can meet the normal water supply requirement of a boiler in the regeneration process of the sodium ion exchanger 2.
The boiler water supply control system is characterized in that an online hardness detection system is arranged on a boiler water supply pipeline and comprises a hardness detection sensor 6 arranged in a water outlet pipeline of a sodium ion exchanger 2, the online hardness detection system transmits signals to the control system in real time through detecting the concentration of calcium and magnesium ions in water, and whether water passing through the sodium ion exchanger 2 enters a water tank 1 or not is achieved through the hardness, or the regeneration of the sodium ion exchanger 2 is achieved according to the change of the hardness of the water within a certain time.
The water tank is lower than the safe water level, and the control system automatically produces water. The formula for calculating the safe water level H of the water tank is as follows:
the rated evaporation capacity of the boiler is D unit: kg/h;
the regeneration time of sodium ions is T unit: h;
the water tank is cuboid length, width and height a, b and h respectively, and the unit is: rice;
safe water level: h ═ K × DT/ab, K is a safety factor K > 1.05,
the water tank is the cylinder, and the radius is r, and the height is h, and the unit is: the weight of the rice is reduced,
safe water level: h ═ K ═ DT/pi r2And k is a safety factor k which is larger than 1.05.
The water tank is less than safe water level, and level sensor 5 gives the controller with signal transmission, and the controller sends the signal to solenoid valve I Y1, solenoid valve III Y3, and solenoid valve I Y1 is opened, and solenoid valve III Y3 is opened, and city running water or waste water tank's water gets into control system, realizes the softening of raw water. Raw water enters a sodium ion exchanger 2, and the hardness of the outlet water is not up to the standard after 1-5min and is directly discharged into a wastewater tank 4. Although the hardness of the water does not reach the standard, the hardness of the water is lower than that of the raw water, and the water enters the waste water tank 4 for standby, so that the purpose of saving water is achieved.
After raw water enters the sodium ion exchanger 2, the water quality is softened, signals are sent to the controller in real time according to the concentration of calcium-magnesium plasma of outlet water in online hardness detection, the requirement of water supply hardness is met (YD is less than or equal to 0.03mmol), the controller sends the signals to the electromagnetic valve IIY 2 and the electromagnetic valve IIIY 3, the electromagnetic valve IIY 2 is opened, and qualified water enters the water tank 1 after the electromagnetic valve IIIY 3 is closed.
After raw water enters the sodium ion exchanger for 2 min to 5min, the hardness of online hardness detection is always greater than the standard requirement, or the hardness is not decreased or increased inversely, the controller controls the salt tank to supplement sodium ions to the sodium ion exchanger, and the resin regeneration of the sodium ion exchanger is realized.
The resin regeneration control sensor 7 monitors the resin regeneration condition, after regeneration is finished, a signal is sent to the controller, the salt tank stops supplementing sodium ions to the sodium ion exchanger, and the controller sends the signal again to realize water production.
When the water level of the waste water tank 4 is higher, the ball valve Q1 is manually opened, and the waste water is reused. The purpose of water saving and emission reduction is achieved, and a check valve D1 is connected with the ball valve Q1 in series.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Claims (3)
1. A boiler feed water control system characterized in that: the water outlet of the sodium ion exchanger is respectively connected with the water tank and the waste water tank through a solenoid valve II and a solenoid valve III, and a hardness detection sensor is arranged at the water outlet of the sodium ion exchanger; the waste water tank is connected with the sodium ion exchanger through a one-way valve and an electromagnetic valve I; the salt tank is connected with the sodium ion exchanger and the tap water pipeline; the hardness detection sensor, the electromagnetic valve I, the electromagnetic valve II, the electromagnetic valve III and the one-way valve are respectively connected with the controller, the hardness detection sensor detects the concentration of calcium and magnesium ions in water and transmits signals to the controller in real time, the controller realizes whether the water passing through the sodium ion exchanger enters the water tank or not according to the concentration of the calcium and magnesium ions in the water, or the salt tank supplements the sodium ions to the sodium ion exchanger according to the concentration change of the calcium and magnesium ions in a certain time period in the water outlet, and the resin regeneration of the sodium ion exchanger is realized.
2. The boiler feed water control system as claimed in claim 1, wherein a liquid level sensor is provided in the water tank, and the control system automatically produces water when the water in the water tank is lower than a safe water level, wherein the safe water level H of the water tank is calculated as follows:
the water tank is the cuboid, its safe water level: h ═ K × DT/ab, length, width, height, and height are a and b, respectively, and the unit is: rice;
the water tank is a cylinder, safe water level: h ═K*DT/πr2Radius r, in units of: rice;
the rated evaporation capacity of the boiler is D, and the unit is as follows: kg/h
The sodium ion regeneration time is T, and the unit is: h is
k is a safety factor k > 1.05.
3. The boiler feed water control system of claim 1, characterized in that when the water tank is lower than the safe water level H, the solenoid valve I and the solenoid valve III are both opened, city tap water or water in the waste water tank enters the sodium ion exchanger, and the sodium ion exchanger directly discharges the water into the waste water tank when the hardness of the outlet water of 1-5min does not reach the standard; if the detected hardness of the hardness detection sensor is always greater than the standard requirement after 1-5min, or the hardness is not decreased or increased inversely, the salt tank supplements sodium ions to the sodium ion exchanger, and the resin regeneration of the sodium ion exchanger is realized; after the hardness detection sensor detects that the hardness of the water reaches the standard, the controller opens the electromagnetic valve II and closes the electromagnetic valve III, and qualified water enters the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226348.8A CN111439809A (en) | 2020-03-27 | 2020-03-27 | Boiler feed water control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010226348.8A CN111439809A (en) | 2020-03-27 | 2020-03-27 | Boiler feed water control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111439809A true CN111439809A (en) | 2020-07-24 |
Family
ID=71649113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010226348.8A Pending CN111439809A (en) | 2020-03-27 | 2020-03-27 | Boiler feed water control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111439809A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461180A (en) * | 2021-06-29 | 2021-10-01 | 珠海格力电器股份有限公司 | Soft water regeneration structure, humidifier and soft regeneration method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289913A (en) * | 1999-09-24 | 2001-04-04 | 三浦工业株式会社 | Boiler |
| CN1405095A (en) * | 2001-06-26 | 2003-03-26 | 三浦工业株式会社 | Water-softening apparatus and regeneration control method |
| CN106986419A (en) * | 2017-05-22 | 2017-07-28 | 陈晓斌 | It is a kind of to monitor the composite boiler softened water equipment of bating effect in fact |
| CN206767833U (en) * | 2017-04-17 | 2017-12-19 | 泉州市知行电子科技有限公司 | A kind of family expenses water softening device with degerming functions |
| CN206927659U (en) * | 2017-06-27 | 2018-01-26 | 天津市万峰净化设备有限公司 | A kind of full automatic high efficiency softens water treatment facilities |
| CN207065545U (en) * | 2017-08-22 | 2018-03-02 | Tcl王牌电器(惠州)有限公司 | Boiler replenishing water device and boiler |
| CN208667315U (en) * | 2019-01-18 | 2019-03-29 | 山西客来安洗涤服务有限公司 | A kind of softening water treatment facilities |
-
2020
- 2020-03-27 CN CN202010226348.8A patent/CN111439809A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1289913A (en) * | 1999-09-24 | 2001-04-04 | 三浦工业株式会社 | Boiler |
| CN1405095A (en) * | 2001-06-26 | 2003-03-26 | 三浦工业株式会社 | Water-softening apparatus and regeneration control method |
| CN206767833U (en) * | 2017-04-17 | 2017-12-19 | 泉州市知行电子科技有限公司 | A kind of family expenses water softening device with degerming functions |
| CN106986419A (en) * | 2017-05-22 | 2017-07-28 | 陈晓斌 | It is a kind of to monitor the composite boiler softened water equipment of bating effect in fact |
| CN206927659U (en) * | 2017-06-27 | 2018-01-26 | 天津市万峰净化设备有限公司 | A kind of full automatic high efficiency softens water treatment facilities |
| CN207065545U (en) * | 2017-08-22 | 2018-03-02 | Tcl王牌电器(惠州)有限公司 | Boiler replenishing water device and boiler |
| CN208667315U (en) * | 2019-01-18 | 2019-03-29 | 山西客来安洗涤服务有限公司 | A kind of softening water treatment facilities |
Non-Patent Citations (2)
| Title |
|---|
| 大庆油田特种作业安全培训中心: "《工业锅炉水处理技术》", 31 August 2012 * |
| 张金和: "《管道安装基本理论知识》", 31 December 2000 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461180A (en) * | 2021-06-29 | 2021-10-01 | 珠海格力电器股份有限公司 | Soft water regeneration structure, humidifier and soft regeneration method |
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Application publication date: 20200724 |
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