CN110332580A - Secondary station steam-water heat exchanging condensed-water recovering device and recovery method - Google Patents

Secondary station steam-water heat exchanging condensed-water recovering device and recovery method Download PDF

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Publication number
CN110332580A
CN110332580A CN201910618710.3A CN201910618710A CN110332580A CN 110332580 A CN110332580 A CN 110332580A CN 201910618710 A CN201910618710 A CN 201910618710A CN 110332580 A CN110332580 A CN 110332580A
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CN
China
Prior art keywords
water
condensed
liquid level
secondary network
level sensor
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Pending
Application number
CN201910618710.3A
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Chinese (zh)
Inventor
刘艳
王涛
于海旺
刘孟州
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Shandong Environmental Energy Design Institute Co Ltd
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Shandong Environmental Energy Design Institute Co Ltd
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Priority to CN201910618710.3A priority Critical patent/CN110332580A/en
Publication of CN110332580A publication Critical patent/CN110332580A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/10Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • F24D3/1066Distributors for heating liquids

Abstract

Secondary station steam-water heat exchanging condensed-water recovering device and recovery method, including heat exchanger, dirt separator, secondary network circulating pump, water supply tank and small pump, heat exchanger is equipped with condensed water comb, condensed water comb is connect by condensate-water polishing pipeline with water supply tank, setting high liquid level sensor and low liquid level sensor in water supply tank;Dirt separator is additionally arranged at the bottom of bypass pipe, and bypass pipe is equipped with motor-driven valve A, is connected between dirt separator and secondary network circulating pump by secondary network circulating line, and secondary network circulating line is equipped with pressure gauge;High liquid level sensor, low liquid level sensor, motor-driven valve A, pressure gauge and small pump connect linkage with controller.Using station existing equipment, condensate-water polishing is used as water-supply and pressure-stabling by adding motor-driven valve, controller and condensate-water polishing pipeline, the heat in condensed water is efficiently used, reduces heat exchange equipment capacity, reduce investment.Condensed water is of fine quality in tap water, it is water-saving and be used as moisturizing can be without water treatment, economical and efficient, energy conservation and environmental protection.

Description

Secondary station steam-water heat exchanging condensed-water recovering device and recovery method
Technical field
The present invention relates to Sewage treatment utilize technical field, in particular to secondary station steam-water heat exchanging condensed-water recovering device and Recovery method.
Background technique
Reclamation of condensate water is an energy-efficient important measures.Steam is multi-purpose to make heat source, and is actually used only It is only latent heat of the steam, heat almost all possessed by sensible heat-condensed water of steam is dropped.This is because to improve steaming Vapour uses the production efficiency of equipment, i.e. heating efficiency, and just the low condensed water of heat transfer efficiency must be discharged from steam as early as possible. However, the condensed water after steam acting still has many heats, very big energy-saving benefit can be received by making good use of this partial heat.
In the second level vapour of concentrated supply of heating in the city-water heat exchange station, steam is released in heat exchange equipment by indirect heat exchange The generation of the latent heat of vaporization, condensed water is essential.Due to condensed water temperature with higher, generally between 60 DEG C~80 DEG C, And water quality is good, and degree of supercooling is smaller, close to saturation, according to relevant regulations, and all condensed waters generated with steam indirect heating, In addition to heated medium is solution that is toxic or having aggressive, it should all be recycled, unrenewable condensed water will also be examined Consider and recycles its heat.
But in practical applications, as there are all for water heat exchange station condensate-water polishing for the increase second level vapour-for thermal region scale It is mostly difficult.Reason has two, first, needing to incite somebody to action for laying pipe network in thermal region if carrying out centralized recovery utilization to condensed water Condensate-water polishing needs to carry out operation maintenance management to recovery system to the centrostigmas such as power plant or boiler room;Second, due to two All kinds of heat exchange equipments, valve and fittings quality superiority and inferiority are widely different in grade station, the water quality ginseng of each branched heat-supplying condensing hot air furnace Difference is uneven, causes calcium ions and magnesium ions are exceeded, there are problems that recycle-water can not reuse.The above reason, is caused in actual motion Second level vapour-water heat exchange station condensed water does not recycle mostly, therefore how in secondary heat exchange station in reasonable utilization condensed water Potential heat becomes the important topic in energy conservation.
Currently, most common condensate-water polishing mostly uses closed condensate recovery device, device is generally by collecting container, vapour Water separation device, decontamination apparatus, anti cavitation device, high temperature resistant water pump, safety valve, liquid level sensing device, the composition such as self-control box.It is whole The removal process of a high-temperature condensation water is carried out in closed system, the not discharge of secondary steam, and high-temperature condensation water is not yet It will receive secondary pollution, therefore pipe-line system will not generate oxygen corrosion phenomenon, and device devises cavitation removing measure, can be really Water conservation pump directly pumps condensed water in high temperature without cavitation phenomenons.But the device is applied in heat supply steam-water heat exchanging initial station more, In addition to aforementioned advantages, big region condensed water is not present applied to heat supply initial station and concentrates pipe network investment, operational and administrative expenses, energy It is enough to guarantee condensed water water quality well.
It can be had some limitations if applying the device in second level steam-water heat exchange station, device is applied to secondary station Mode there are two types of.One, centralized recovery pipe network is accessed after the condensed water that vapour equipment is discharged is handled, pressurizeed by the device Send the hot source points such as power plant or boiler room back to;Two, by the device using secondary pipe network in access station after Ion exchange resin as level pressure Moisturizing is used.The former can equally have the problems such as aforementioned pipe network investment, operational and administrative expenses, and can not solve secondary station equipment quality Water pollution issue caused by bad;Condensed water is accessed two nets by the device and is used as water-supply and pressure-stabling by the latter, can there is equipment Cost is expensive, and land occupation is big, and has kind of the sense of " wasting one's talent on a petty job ", and cost performance is low.
Summary of the invention
To overcome problems of the prior art, the present invention provides secondary station steam-water heat exchanging condensed-water recovering device and Recovery method.
The technical scheme adopted by the invention to solve the technical problem is that: this kind of secondary station steam-water heat exchanging condensate-water polishing dress It sets, including heat exchanger, dirt separator, secondary network circulating pump, water supply tank and small pump, the heat exchanger is equipped with condensed water comb, Condensed water comb is connect by condensate-water polishing pipeline with water supply tank, setting high liquid level sensor and low liquid level sensing in water supply tank Device;Dirt separator is additionally arranged at the bottom of bypass pipe, and bypass pipe is equipped with motor-driven valve A, passes through two between dirt separator and secondary network circulating pump Secondary net circulating line connection, secondary network circulating line are equipped with pressure gauge;It further include controller, high liquid level sensor, low liquid level Sensor, motor-driven valve A, pressure gauge and small pump connect linkage with controller.
Further, the condensate-water polishing pipeline is equipped with thermometer.
Further, the condensate-water polishing pipeline is equipped with motor-driven valve B.
Further, thermometer and motor-driven valve B are connect with controller.
Using the method for recyclable device recycling condensed water, during heat supply running, the condensed water generated in heat exchange is discharged into benefit Water tank, the preferential secondary network circulating line accessed before secondary network water circulating pump by small pump, carries out water-supply and pressure-stabling, and realize heat Amount recycling;
Heat transfer process starts, and the condensed water generated in heat exchanger drains into water supply tank, when high liquid level sensor is examined in water supply tank When measuring that water level reaches high-water line in water supply tank, high liquid level sensor will test signal and be transmitted to controller, controller control Motor-driven valve A on dirt separator bottom bypass pipe is opened, and secondary network return water drains pressure release by dirt separator;
When the pressure gauge on secondary network circulating line detects pressure of return water lower than steady of system press value, pressure gauge is by pressure Signal is transmitted to controller, and controller controls moisturizing pump startup, preferentially using condensed water in water tank to before secondary network water circulating pump Secondary network circulating line water-supply and pressure-stabling;
When low liquid level sensor detects that water level reaches low water line in water supply tank in water supply tank, low liquid level sensor will Detection signal is transmitted to controller, and controller controls the motor-driven valve A on dirt separator bottom bypass pipe and closes, pressure maintaining.
Further, when the thermometer on condensate-water polishing pipeline detects condensing water temperature lower than 60 DEG C or not higher than benefit When entering the temperature of the tap water in water supply tank, thermometer will test signal and be transmitted to controller, and controller controls condensate-water polishing Motor-driven valve B on pipeline is closed, and is overhauled to system.
To sum up, the advantageous effects of the above technical solutions of the present invention are as follows:
The present invention is a kind of simple condensed-water recovering device, using station existing equipment, by adding motor-driven valve, control Condensate-water polishing is used as water-supply and pressure-stabling by the mode of device and condensate-water polishing pipeline, can both efficiently use the heat in condensed water Amount reduces heat exchange equipment capacity, reduces land occupation, investment, while condensed water is of fine quality in tap water, it is water-saving and be used as moisturizing can not be into Row water treatment, economical and efficient, and energy conservation and environmental protection, actually kill two birds with one stone.Save the tap water volume of water-supply and pressure-stabling;It is mended by heating The energy consumption of water, which is changed into, absorbs high-quality condensed water additional heat energy, can reduce heat exchange equipment capacity, reduces investment and land occupation;With tradition Motor-driven valve and control equipment are only added in the comparison of steam-water heat exchange station system, and equipment volume is small, takes up little area, with low investment, noiseless, nothing Pollution.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the control planning schematic diagram of controller and other controlled parts.
In figure:
1 heat exchanger, 2 dirt separators, 3 secondary network circulating pumps, 4 water supply tanks, 5 small pumps, 6 condensed water combs, 7 condensate-water polishings Pipeline, 8 high liquid level sensors, 9 low liquid level sensors, 10 bypass pipes, 11 motor-driven valve A, 12 secondary network circulating lines, 13 pressure Table, 14 thermometers, 15 motor-driven valve B.
Specific embodiment
Feature and principle of the invention are described in detail below in conjunction with attached drawing, illustrated embodiment is only used for explaining this hair It is bright, not limited the scope of protection of the present invention with this.
As shown in Figure 1, this kind of secondary station steam-water heat exchanging condensed-water recovering device, including existing heat exchanger 1, dirt separator 2, Secondary network circulating pump 3, water supply tank 4 and small pump 5, secondary network return water enter dirt separator 2 and pass through secondary network circulating line 12 and two Secondary net circulating pump 3 connects, and secondary network circulating pump 3 is connect with heat exchanger 1 by pipeline, and heat exchanger 1 carries out secondary network by pipeline It supplies water, steam enters heat exchanger 1 by pipeline.Tap water carries out moisturizing to water supply tank 4 by pipeline, and water supply tank 4 passes through moisturizing Pump 5 and pipeline are connect with secondary network circulating line 12, to system water supplement.
Condensed water comb 6 is arranged in the present invention on heat exchanger 1, and condensed water comb 6 passes through condensate-water polishing pipeline 7 and moisturizing Case 4 connects, and heat exchanger 1 changes thermogenetic condensed water generally between 60 DEG C to 80 DEG C, and water quality is good, and degree of supercooling is relatively low, connects Nearly saturation, therefore the condensed water of the better quality preferably carries out system into water supply tank 4 is interior by condensate-water polishing pipeline 7 Moisturizing.Relative to temperature for lower and poor water quality tap water, condensed water is filled into the system realizes better quality and coagulate The recycling born water, the utilization of energy reduce the amount of filling into of tap water additional outside system.
High water level position and low water level position are corresponded in water supply tank 4, and high liquid level sensor 8 and low liquid level sensing is respectively set Device 9, to the water level conditions in real-time monitoring water supply tank 4, convenient for the control to system water supplement situation.
Dirt separator 2 is additionally arranged at the bottom of bypass pipe 10, and bypass pipe 10 is equipped with motor-driven valve A11, according to 8 He of high liquid level sensor The switch of motor-driven valve A11, realizes System drainage on the testing result control 2 bottom bypass pipe 10 of dirt separator of low liquid level sensor 9 Water pressure maintaining is stayed in pressure release.
It is connected between dirt separator 2 and secondary network circulating pump 3 by secondary network circulating line 12, on secondary network circulating line 12 Equipped with pressure gauge 13, when the pressure gauge 13 on secondary network circulating line 12 detects pressure of return water lower than steady of system press value, pressure Pressure signal is transmitted to controller by power table 13, and controller controls small pump 5 and starts, preferentially using condensed water in water tank to secondary 12 water-supply and pressure-stabling of secondary network circulating line before net water circulating pump.
As shown in Fig. 2, further including controller, high liquid level sensor 8, low liquid level sensor 9, motor-driven valve A11, pressure gauge 13, thermometer 14 and small pump 5 connect linkage with controller.High liquid level sensor 8, low liquid level sensor 9 and pressure gauge 13, which will test signal, is transmitted to controller, and controller is directed to the signal received to small pump 5, motor-driven valve A11, motor-driven valve B15 It is controlled.
Condensate-water polishing pipeline 7 is equipped with thermometer 14, and condensate-water polishing pipeline 7 is equipped with motor-driven valve B15, thermometer 14 It is connect with controller with motor-driven valve B15.When the thermometer 14 on condensate-water polishing pipeline 7 detects condensing water temperature lower than 60 DEG C or not higher than the tap water filled into water supply tank 4 temperature when, thermometer 14 will test signal and be transmitted to controller, controller The motor-driven valve B15 controlled on condensate-water polishing pipeline 7 is closed, and controller can be set alarm lamp, notify related technical personnel couple System is overhauled, where finding the problem in time.
Using the method for recyclable device recycling condensed water, during heat supply running, the condensed water generated in heat exchange is discharged into benefit Water tank 4, the preferential secondary network circulating line 12 accessed before secondary network water circulating pump by small pump 5, carries out water-supply and pressure-stabling, and real Existing heat recovery.
Heat transfer process starts, and the condensed water generated in heat exchanger 1 drains into water supply tank 4, when high liquid level sensor in water supply tank 4 8 when detecting that water level reaches high-water line in water supply tank 4, and high liquid level sensor 8 will test signal and be transmitted to controller, controller The motor-driven valve A11 controlled on 2 bottom bypass pipe 10 of dirt separator is opened, and secondary network return water drains pressure release by dirt separator 2.
When the pressure gauge 13 on secondary network circulating line 12 detects pressure of return water lower than steady of system press value, pressure gauge 13 Pressure signal is transmitted to controller, controller controls small pump 5 and starts, and preferentially recycles using condensed water in water tank to secondary network 12 water-supply and pressure-stabling of secondary network circulating line before water pump.
When low liquid level sensor 9 detects that water level reaches low water line in water supply tank 4 in water supply tank 4, low liquid level sensing Device 9 will test signal and be transmitted to controller, and controller controls the motor-driven valve A11 on 2 bottom bypass pipe 10 of dirt separator and closes, protects Pressure.
To sum up, the advantageous effects of the above technical solutions of the present invention are as follows:
The present invention is a kind of simple condensed-water recovering device, using station existing equipment, by adding motor-driven valve, control Condensate-water polishing is used as water-supply and pressure-stabling by the mode of device and condensate-water polishing pipeline 7, can both efficiently use the heat in condensed water Amount reduces heat exchange equipment capacity, reduces land occupation, investment, while condensed water is of fine quality in tap water, it is water-saving and be used as moisturizing can not be into Row water treatment, economical and efficient, and energy conservation and environmental protection, actually kill two birds with one stone.Save the tap water volume of water-supply and pressure-stabling;It is mended by heating The energy consumption of water, which is changed into, absorbs high-quality condensed water additional heat energy, can reduce heat exchange equipment capacity, reduces investment and land occupation;With tradition Motor-driven valve and control equipment are only added in the comparison of steam-water heat exchange station system, and equipment volume is small, takes up little area, with low investment, noiseless, nothing Pollution.
Above-described embodiment is only the description that carries out to the preferred embodiment of the present invention, not to the scope of the present invention into Row limits, without departing from the spirit of the design of the present invention, relevant technical staff in the field to various modifications of the invention and It improves, should all expand in protection scope determined by claims of the present invention.

Claims (6)

1. secondary station steam-water heat exchanging condensed-water recovering device, including heat exchanger, dirt separator, secondary network circulating pump, water supply tank and benefit Water pump, which is characterized in that the heat exchanger is equipped with condensed water comb, and condensed water comb passes through condensate-water polishing pipeline and moisturizing Case connection, the interior setting high liquid level sensor of water supply tank and low liquid level sensor;Dirt separator is additionally arranged at the bottom of bypass pipe, on bypass pipe It equipped with motor-driven valve A, is connected between dirt separator and secondary network circulating pump by secondary network circulating line, is set on secondary network circulating line There is pressure gauge;Further include controller, high liquid level sensor, low liquid level sensor, motor-driven valve A, pressure gauge and small pump with control Device processed connects linkage.
2. secondary station steam-water heat exchanging condensed-water recovering device according to claim 1, which is characterized in that the condensed water returns Closed tube road is equipped with thermometer.
3. secondary station steam-water heat exchanging condensed-water recovering device according to claim 2, which is characterized in that the condensed water returns Closed tube road is equipped with motor-driven valve B.
4. secondary station steam-water heat exchanging condensed-water recovering device according to claim 3, which is characterized in that thermometer and electronic Valve B is connect with controller.
5. utilizing the method for any one recyclable device recycling condensed water described in claim 1-4, which is characterized in that
During heat supply running, the condensed water generated in heat exchange is discharged into water supply tank, preferential to access secondary network circulation by small pump Secondary network circulating line before water pump carries out water-supply and pressure-stabling, and realizes heat recovery;
Heat transfer process starts, and the condensed water generated in heat exchanger drains into water supply tank, when high liquid level sensor detects in water supply tank When water level reaches high-water line in water supply tank, high liquid level sensor will test signal and be transmitted to controller, controller control decontamination Motor-driven valve A on device bottom bypass pipe is opened, and secondary network return water drains pressure release by dirt separator;
When the pressure gauge on secondary network circulating line detects pressure of return water lower than steady of system press value, pressure gauge is by pressure signal It is transmitted to controller, controller controls moisturizing pump startup, preferentially using condensed water in water tank to two before secondary network water circulating pump Secondary net circulating line water-supply and pressure-stabling;
When low liquid level sensor detects that water level reaches low water line in water supply tank in water supply tank, low liquid level sensor be will test Signal is transmitted to controller, and controller controls the motor-driven valve A on dirt separator bottom bypass pipe and closes, pressure maintaining.
6. the method for recycling condensed water according to claim 5, which is characterized in that the temperature on condensate-water polishing pipeline When table detects temperature of the condensing water temperature lower than 60 DEG C or not higher than the tap water filled into water supply tank, thermometer will test letter It number is transmitted to controller, controller controls the motor-driven valve B on condensate-water polishing pipeline and closes, overhauls to system.
CN201910618710.3A 2019-07-09 2019-07-09 Secondary station steam-water heat exchanging condensed-water recovering device and recovery method Pending CN110332580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910618710.3A CN110332580A (en) 2019-07-09 2019-07-09 Secondary station steam-water heat exchanging condensed-water recovering device and recovery method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910618710.3A CN110332580A (en) 2019-07-09 2019-07-09 Secondary station steam-water heat exchanging condensed-water recovering device and recovery method

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CN110332580A true CN110332580A (en) 2019-10-15

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2331885Y (en) * 1998-04-10 1999-08-04 冶金工业部鞍山焦化耐火材料设计研究院 Hot-water heat exchanger with condensed water recovery device
CN2878991Y (en) * 2006-03-13 2007-03-14 张治家 Condensate water recycling device in steam heat exchange station
CN2916437Y (en) * 2006-06-06 2007-06-27 李伟 Energy-saving non-scale panel type steam and water heat exchanger set
KR20110086961A (en) * 2010-01-25 2011-08-02 주식회사 경동나비엔 Combination structure of expansion tank and filter apparatus and the filter apparatus
CN104848283A (en) * 2014-10-23 2015-08-19 青岛万力科技有限公司 Heat exchange and recovery balancing device saving energy through waste heat of steam condensate
CN104848303A (en) * 2014-11-03 2015-08-19 高天红 Intelligent heating heat supply station for heat exchange by steam heat source and condensed water recovery
CN104848286A (en) * 2014-10-22 2015-08-19 青岛万力科技有限公司 Energy saving system of steam-water heat exchange station

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2331885Y (en) * 1998-04-10 1999-08-04 冶金工业部鞍山焦化耐火材料设计研究院 Hot-water heat exchanger with condensed water recovery device
CN2878991Y (en) * 2006-03-13 2007-03-14 张治家 Condensate water recycling device in steam heat exchange station
CN2916437Y (en) * 2006-06-06 2007-06-27 李伟 Energy-saving non-scale panel type steam and water heat exchanger set
KR20110086961A (en) * 2010-01-25 2011-08-02 주식회사 경동나비엔 Combination structure of expansion tank and filter apparatus and the filter apparatus
CN104848286A (en) * 2014-10-22 2015-08-19 青岛万力科技有限公司 Energy saving system of steam-water heat exchange station
CN104848283A (en) * 2014-10-23 2015-08-19 青岛万力科技有限公司 Heat exchange and recovery balancing device saving energy through waste heat of steam condensate
CN104848303A (en) * 2014-11-03 2015-08-19 高天红 Intelligent heating heat supply station for heat exchange by steam heat source and condensed water recovery

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