CN108591992A - A kind of Non-scale steam generator - Google Patents

A kind of Non-scale steam generator Download PDF

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Publication number
CN108591992A
CN108591992A CN201810574512.7A CN201810574512A CN108591992A CN 108591992 A CN108591992 A CN 108591992A CN 201810574512 A CN201810574512 A CN 201810574512A CN 108591992 A CN108591992 A CN 108591992A
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China
Prior art keywords
steam generator
module
water
cloth liquid
water supply
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CN201810574512.7A
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CN108591992B (en
Inventor
徐象国
付立宸
潘洪浩
王帅邦
管祥添
陈珺珺
潘旖旎
王珍懿
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Zhejiang University ZJU
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Zhejiang University ZJU
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Priority to CN201810574512.7A priority Critical patent/CN108591992B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00Methods of steam generation characterised by form of heating method
    • F22B1/28Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/287Methods of steam generation characterised by form of heating method in boilers heated electrically with water in sprays or in films
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00Component parts or details of steam boilers
    • F22B37/02Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/42Applications, arrangements, or dispositions of alarm or automatic safety devices
    • F22B37/47Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to abnormal temperature, e.g. actuated by fusible plugs

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air Humidification (AREA)
  • Devices For Medical Bathing And Washing (AREA)

Abstract

Further include the cloth liquid module being mounted in the evaporation cavity the invention discloses a kind of Non-scale steam generator, including water supply module, evaporation cavity, heating module, exhaust module and drain module, the cloth liquid module includes:Cloth liquid bath is located at the lower section of the water supply module feed water inlet;There is difference in height, the edge of upper end to be docked with the cloth liquid bath at least partly edge for evaporating surface, both ends, and the edge of lower end is connected to the water inlet of the drain module;The edge that the cloth liquid bath is docked with the evaporating surface is horizontally disposed;The method that the Non-scale steam generator of the present invention uses gas-liquid separation, high-concentration waste liquid is discharged, the accumulation of incrustation scale in the device is avoided, uniform liquid film is formed on evaporating surface, evaporation efficiency is greatly improved, has many advantages, such as of low cost, compact-sized, highly practical, long lifespan.

Description

A kind of Non-scale steam generator
Technical field
The present invention relates to steam generator technical fields, and in particular to a kind of Non-scale steam generator.
Background technology
Steam generator generates steam by heating to supply water, and the industries such as is widely used in food and drink, medical treatment, keeps a public place clean, but at present Most of steam generators can form incrustation scale in evaporating surface or pipeline after a period of use in the market, substantially reduce steam The efficiency of heating surface or even blocking pipeline of generator.Incrustation scale problem seriously limits the service life of steam generator.
It is current common to solve the problems, such as that the method one of incrustation scale is using the timing cleaning such as chemical detergent such as acetic acid, or in water Middle addition softening agent.The method is usually applied to Industrial Boiler, and is not suitable for food and drink and the food-grade steam in medical industry Generator.Method can obviously prevent the accumulation of incrustation scale second is that using distilled water or pure water as supplying water, but the method increase Use cost also limits expansion of the steam generator to household application market.
In recent years it is proposed that certain Non-scale steam generator structures suitable for food processing, such as Publication No. CN The patent document of 105864738A discloses a kind of Non-scale steam generator comprising calandria and sets water storage in the inner The bottom of chamber, water storage cavity is inclined to set, and tilts down and be provided with faucet, between the bottom of water storage cavity and the side wall of water storage cavity By the excessive face connection of orthodrome.The water storage cavity of above-mentioned apparatus can not accumulate in cylinder, the round and smooth acerous position of inner surface, incrustation scale;Storage Water is very big to lower punch power when the big angles R in water cavity bottom and High angle discharge water, and incrustation scale is poured water receiving tank by discharge tube;Water inlet pipe with Steam generator has downwards an inclination angle, is conducive to water scale discharge discharge.
But that there are processing costs is higher for above-mentioned steam generator, and structure is not compact enough, and thermal loss is larger, and the thermal efficiency is low The problems such as.
Invention content
The present invention provides a kind of Non-scale steam generator, maintenance week high, compact-sized, at low cost with the thermal efficiency The advantage of phase length.
A kind of Non-scale steam generator, including water supply module, evaporation cavity, heating module, exhaust module and drain module, Further include the cloth liquid module being mounted in the evaporation cavity, the cloth liquid module includes:
Cloth liquid bath is located at the lower section of the water supply module feed water inlet;
There is difference in height, the edge of upper end to be docked with the cloth liquid bath at least partly edge for evaporating surface, both ends, lower end Edge is connected to the water inlet of the drain module;The edge that the cloth liquid bath is docked with the evaporating surface is horizontally disposed.
On the one hand the present invention can further decrease for water flow velocity by the way that cloth liquid bath is arranged, realize filling on depth direction Liquid separation, the flow of spilling is divided to form uniform liquid film on evaporating surface.And the bottom end of evaporating surface and the drain module Water inlet connection may be implemented quick fluid-discharge and avoid the formation of incrustation scale.
The cloth liquid bath can be the various shapes such as circle, bar shaped, bending, in order to improve efficiency, convenient for manufacture, preferably , the cloth liquid bath is bar-shaped trough, and the edge of two long sides docks the evaporating surface being inclined outwardly respectively.
In order to improve space availability ratio and luminous efficiency, it is preferred that the angle of inclination of the evaporating surface is 50 °~85 °.
Preferably, the roughness of the evaporating surface is Ra0.5~Ra15.The evaporating surface by roughening treatment with Increase the nucleus of boiling, improves evaporation efficiency.
Preferably, the evaporating surface arranges multiple breeze ways in the height direction.Water flows through after breeze way slows down again Cloth liquid, to increase time of contact of the water with evaporating surface.
In order to supplement with making uniform fluid flow, it is preferred that the water supply module includes being connect with water supply pipe and being mounted on institute State the water chamber in evaporation cavity, the water chamber is located at the top of the cloth liquid bath, the bottom of the water chamber offer along The water supply slit that the length direction of cloth liquid bath extends.Above structure can be such that the interior water of cloth liquid bath uniformly marginally increases, into one Step improves the uniformity of evaporating surface moisture film.
The shape of water chamber can be adjusted as needed, for the ease of manufacturing and installing, it is preferred that the water chamber For extended segment of the water supply pipe in the evaporation cavity.
There are many mounting means of the heating module, if can with heating evaporation surface, in order to improve luminous efficiency, Preferably, the calandria of the heating module is arranged between two evaporating surfaces, and the back side of the calandria and evaporating surface Between fill heat-conducting medium.
In order to improve luminous efficiency, make full use of with ensureing the energy, it is preferred that also pacify between two evaporating surfaces Equipped with temperature-sensing element.For monitoring steam generator internal temperature.When temperature is higher, illustrate that water supply is all steamed in evaporation cavity Hair then controls the corresponding gaining water-supplying flow of water pump or reduces the heating power of calandria;When temperature is excessively high uncontrollable, then Calandria power supply is cut off, to prevent accident.
In order to improve quality of steam, it is preferred that the exhaust module includes:
Saturated vapor pipeline is connected to the steam (vapor) outlet of the evaporation cavity;
Superheated steam pipeline, position pipeline, which is mounted in the evaporation cavity, to be located near calandria, described in the stretching of both ends Evaporation cavity, wherein one end are connected to the saturated vapor pipeline;
Supply air line is connected to the other end of the superheated steam pipeline.
In order to ensure that moisture film has enough residence times in evaporating surface, it is preferred that the edge of the evaporating surface lower end Drain slit is formed between the evaporation cavity wall.Drain slit can slow down flow velocity.
In order to improve the utilization rate of the energy, it is preferred that the water supply module includes being changed with the water receiver of the drain module The preheating section of heat.
Multiple cascades can be arranged side by side in cloth liquid module, be suitble to the higher steam generator of heating temperature, simultaneously It can also be used under the larger size condition of length and width, make full use of space, while increased heat exchange and connecing highly smaller Contacting surface is conducive to water in evaporating surface homogeneous film formation.
Beneficial effects of the present invention:
The method that the Non-scale steam generator of the present invention uses gas-liquid separation, high-concentration waste liquid is discharged, water is avoided Dirt accumulation in the device forms uniform liquid film on evaporating surface, greatly improves evaporation efficiency, have of low cost, structure The advantages that compact, highly practical, long lifespan.
Description of the drawings
Fig. 1 is the structural schematic diagram of the Non-scale steam generator of embodiment 1.
Fig. 2 is the schematic cross-sectional view of the Non-scale steam generator of embodiment 1.
Fig. 3 is the schematic cross-sectional view of the Non-scale steam generator of embodiment 2.
Fig. 4 is the schematic cross-sectional view of the Non-scale steam generator of embodiment 3.
Reference sign:1. water supply pipe, 2. feed liquor slits, 3. evaporation cavities, 4. cloth liquid baths, 5. evaporating surfaces, 6. add Hot body, 7. saturated vapor pipelines, 8. superheated steam pipelines, 9. drain slits, 10. water receivers, 11. temperature-sensing elements, 12. evaporators Shell, 13. supply air lines.
Specific implementation mode
Embodiment 1
As illustrated in fig. 1 and 2, the Non-scale steam generator of the present embodiment includes:Water supply pipe 1, feed liquor slit 2, evaporation Chamber 3, cloth liquid bath 4, evaporating surface 5, calandria 6, saturated vapor pipeline 7, superheated steam pipeline 8, drain slit 9, water receiver 10, Temperature-sensing element 11, evaporator shell 12 and supply air line 13.
In embodiment, feed liquor slit 2 is arranged on water supply pipe 1 by width to narrow gap, is reduced for water flow velocity, And to the appropriate liquid separation of depth direction, the width in gap is determined by water supply flow.
In the present embodiment, evaporating surface 5 is mountain peak shape slope, realizes the homogeneous film formation heating of water.
In the present embodiment, calandria 6 selects the heating rod of aluminium shell, is placed on inside evaporating surface 5 through bending, overheats Steam pipework 8 is located at 6 lower section of calandria, to make full use of space, thermally equivalent.
In the present embodiment, evaporating surface 5 is aluminum cast member with cloth liquid bath 4, and inside is calandria 6 and superheated steam pipeline 8 reserved installation spaces.Evaporating surface 5, to increase the nucleus of boiling, improves evaporation efficiency by roughening treatment.
In the present embodiment, temperature-sensing element 11 is also equipped with inside evaporating surface 5, to monitor steam generator internal temperature. When temperature is higher, illustrate that water supply is all evaporated in evaporation cavity, then controls the corresponding gaining water-supplying flow of water pump or reduce heating The heating power of body;When temperature is excessively high uncontrollable, then calandria power supply is cut off, to prevent accident.
Its working principle is that the water supply from water supply pipe 1 enters evaporator shell 12 through water inlet, by feed liquor slit 2 It buffers and flows into cloth liquid bath 4 after liquid separation.In cloth liquid bath 4, water supply is tentatively heated, and is flowed into and is steamed after being uniformly distributed in the depth direction Face 5 is delivered, and forms uniform liquid film on evaporating surface, carries out falling film evaporation.
It is not steamed yet after flowing down heating surface 5 to evaporation cavity 3, part water supply is entered after water evaporation in the form of saturated steam part Hair is then used as waste liquid to flow out evaporation cavity 3 by drain slit 9, by water receiver 10 and washes away incrustation scale.Water receiver 10 is using adiabatic Material needs periodic cleaning removal hydrops and incrustation scale.
Saturated vapor enters atimodometer through exhaust outlet under the action of pressure difference by saturated vapor pipeline 7 in evaporation cavity 3 It is further heated in superheated steam pipeline 8 inside face 5, ultimately forms superheated steam and enter steam supply pipeline 13.
Embodiment 2
As shown in figure 3, the Non-scale steam generator of the present embodiment includes:Water supply pipe 1, feed liquor slit 2, evaporation cavity 3, Cloth liquid bath 4, evaporating surface 5, calandria 6, saturated vapor pipeline 7, superheated steam pipeline 8, drain slit 9, water receiver 10, temperature-sensitive Element 11, evaporator shell 12 and supply air line 13.
In embodiment, feed liquor slit 2 is arranged on water supply pipe 1 by width to narrow gap, is reduced for water flow velocity, And to the appropriate liquid separation of depth direction, the width in gap is determined by water supply flow.
In the present embodiment, evaporating surface 5 arranges multiple breeze ways, water in the height direction on the basis of the shape inclined-plane of mountain peak Cloth liquid again after breeze way slows down is flowed through, to increase time of contact of the water with evaporating surface 5.
In the present embodiment, calandria 6 selects the heating rod of aluminium shell, is placed on inside evaporating surface 5 through bending, overheats Steam pipework 8 is located at 6 lower section of calandria, to make full use of space, thermally equivalent.
In the present embodiment, evaporating surface 5 is aluminum cast member with cloth liquid bath 4, and inside is calandria 6 and superheated steam pipeline 8 reserved installation spaces.Evaporating surface 5, to increase the nucleus of boiling, improves evaporation efficiency by roughening treatment.
In the present embodiment, temperature-sensing element 11 is also equipped with inside evaporating surface 5, to monitor steam generator internal temperature. When temperature is higher, illustrate that water supply is all evaporated in evaporation cavity, then controls the corresponding gaining water-supplying flow of water pump or reduce heating The heating power of body;When temperature is excessively high uncontrollable, then calandria power supply is cut off, to prevent accident.
Its working principle is that the water supply from water supply pipe 1 enters evaporator shell 12 through water inlet, by feed liquor slit 2 It buffers and flows into cloth liquid bath 4 after liquid separation.In cloth liquid bath 4, water supply is tentatively heated, and is flowed into and is steamed after being uniformly distributed in the depth direction Face 5 is delivered, and forms uniform liquid film on evaporating surface, carries out falling film evaporation.
It is not steamed yet after flowing down heating surface 5 to evaporation cavity 3, part water supply is entered after water evaporation in the form of saturated steam part Hair is then used as waste liquid to flow out evaporation cavity 3 by drain slit 9, by water receiver 10 and washes away incrustation scale.Water receiver 10 is using adiabatic Material needs periodic cleaning removal hydrops and incrustation scale.
Saturated vapor enters atimodometer through exhaust outlet under the action of pressure difference by saturated vapor pipeline 7 in evaporation cavity 3 It is further heated in superheated steam pipeline 8 inside face 5, ultimately forms superheated steam and enter steam supply pipeline 13.
Embodiment 3
As shown in figure 4, the Non-scale steam generator of the present embodiment includes:Water supply pipe 1, feed liquor slit 2, evaporation cavity 3, Cloth liquid bath 4, evaporating surface 5, calandria 6, saturated vapor pipeline 7, superheated steam pipeline 8, drain slit 9, water receiver 10, temperature-sensitive Element 11, evaporator shell 12, supply air line 13.
In embodiment, feed liquor slit 2 is arranged on water supply pipe 1 by width to narrow gap, is reduced for water flow velocity, And to the appropriate liquid separation of depth direction, the width in gap is determined by water supply flow.
In the present embodiment, evaporating surface 5 is the concatenated form in multiple mountain peak shapes slope, is suitble to the higher steam of heating temperature Generator, while can also be used under the larger size condition of length and width, making full use of space, simultaneously highly smaller Heat exchange contact surface is increased, is conducive to water in evaporating surface homogeneous film formation.
In the present embodiment, calandria 6 selects the heating rod of aluminium shell, is placed on inside evaporating surface 5 through bending, overheats Steam pipework 8 is located at 6 lower section of calandria, to make full use of space, thermally equivalent.
In the present embodiment, evaporating surface 5 is aluminum cast member with cloth liquid bath 4, and inside is calandria 6 and superheated steam pipeline 8 reserved installation spaces.Evaporating surface 5, to increase the nucleus of boiling, improves evaporation efficiency by roughening treatment.
In the present embodiment, temperature-sensing element 11 is also equipped with inside evaporating surface 5, to monitor steam generator internal temperature. When temperature is higher, illustrate that water supply is all evaporated in evaporation cavity, then controls the corresponding gaining water-supplying flow of water pump or reduce heating The heating power of body;When temperature is excessively high uncontrollable, then calandria power supply is cut off, to prevent accident.
Its working principle is that the water supply from water supply pipe 1 enters evaporator shell 12 through water inlet, by feed liquor slit 2 It buffers and flows into cloth liquid bath 4 after liquid separation.In cloth liquid bath 4, water supply is tentatively heated, and is flowed into and is steamed after being uniformly distributed in the depth direction Face 5 is delivered, and forms uniform liquid film on evaporating surface, carries out falling film evaporation.
It is not steamed yet after flowing down heating surface 5 to evaporation cavity 3, part water supply is entered after water evaporation in the form of saturated steam part Hair is then used as waste liquid to flow out evaporation cavity 3 by drain slit 9, by water receiver 10 and washes away incrustation scale.Water receiver 10 is using adiabatic Material needs periodic cleaning removal hydrops and incrustation scale.
Saturated vapor enters atimodometer through exhaust outlet under the action of pressure difference by saturated vapor pipeline 7 in evaporation cavity 3 It is further heated in superheated steam pipeline 8 inside face 5, ultimately forms superheated steam and enter steam supply pipeline 13.
In conclusion high-concentration waste liquid is discharged the Non-scale steam generator of the present embodiment, incrustation scale is avoided in device Interior accumulation forms uniform liquid film on evaporating surface, greatly improves evaporation efficiency;Also have it is of low cost, compact-sized, The advantages that safe, highly practical, long lifespan.

Claims (10)

1. a kind of Non-scale steam generator, including water supply module, evaporation cavity, heating module, exhaust module and drain module, It is characterized in that, further includes the cloth liquid module being mounted in the evaporation cavity, the cloth liquid module includes:
Cloth liquid bath is located at the lower section of the water supply module feed water inlet;
There is difference in height, the edge of upper end to be docked with the cloth liquid bath at least partly edge for evaporating surface, both ends, the edge of lower end It is connected to the water inlet of the drain module;The edge that the cloth liquid bath is docked with the evaporating surface is horizontally disposed.
2. Non-scale steam generator as described in claim 1, which is characterized in that the cloth liquid bath is bar-shaped trough, two long sides Edge dock the evaporating surface being inclined outwardly respectively.
3. Non-scale steam generator as claimed in claim 2, which is characterized in that the angle of inclination of the evaporating surface is 50 °~85 °.
4. Non-scale steam generator as described in claim 1, which is characterized in that the water supply module includes and water supply pipe It connects and the water chamber in the evaporation cavity, the water chamber is located at the top of the cloth liquid bath, the water chamber Bottom offers the water supply slit of the length direction extension along cloth liquid bath.
5. Non-scale steam generator as claimed in claim 4, which is characterized in that the water chamber is that the water supply pipe exists Extended segment in the evaporation cavity.
6. Non-scale steam generator as claimed in claim 2, which is characterized in that the calandria of the heating module is arranged in Between two evaporating surfaces, and heat-conducting medium is filled between the calandria and the back side of evaporating surface.
7. Non-scale steam generator as claimed in claim 6, which is characterized in that also pacify between two evaporating surfaces Equipped with temperature-sensing element.
8. Non-scale steam generator as described in claim 1, which is characterized in that the exhaust module includes:
Saturated vapor pipeline is connected to the steam (vapor) outlet of the evaporation cavity;
Superheated steam pipeline, position pipeline, which is mounted in the evaporation cavity, to be located near calandria, and the evaporation is stretched out at both ends Chamber, wherein one end are connected to the saturated vapor pipeline;
Supply air line is connected to the other end of the superheated steam pipeline.
9. Non-scale steam generator as described in claim 1, which is characterized in that the edge of the evaporating surface lower end and institute It states and forms drain slit between evaporating cavity wall.
10. Non-scale steam generator as described in claim 1, which is characterized in that the water supply module includes and the row The preheating section of the water receiver heat exchange of liquid module.
CN201810574512.7A 2018-06-06 2018-06-06 Non-scale steam generator Active CN108591992B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH657278A5 (en) * 1982-01-19 1986-08-29 Ivan Frolovich Evkin Rotary thin-layer evaporator
CN1046974A (en) * 1989-05-04 1990-11-14 全苏铝镁电极工业科学研究设计院 Heat-exchange device
WO1998016685A1 (en) * 1996-10-15 1998-04-23 Kvaerner Pulping Ab Falling-film evaporator with horizontal tubes for evaporating waste liquid from pulp production
US20120129242A1 (en) * 2010-11-23 2012-05-24 Charles David Gilliam Falling Film Evaporator
CN102861449A (en) * 2012-10-15 2013-01-09 江苏中圣高科技产业有限公司 Evaporator for strengthening heat transmission and avoiding scaling
CN106989375A (en) * 2017-05-19 2017-07-28 天津市龙津科技有限公司 Electromagnetic heating steam boiler system and its control method
CN207153134U (en) * 2017-08-28 2018-03-30 新能能源有限公司 A kind of falling film evaporation tower
CN208312343U (en) * 2018-06-06 2019-01-01 浙江大学 A kind of Non-scale steam generator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH657278A5 (en) * 1982-01-19 1986-08-29 Ivan Frolovich Evkin Rotary thin-layer evaporator
CN1046974A (en) * 1989-05-04 1990-11-14 全苏铝镁电极工业科学研究设计院 Heat-exchange device
WO1998016685A1 (en) * 1996-10-15 1998-04-23 Kvaerner Pulping Ab Falling-film evaporator with horizontal tubes for evaporating waste liquid from pulp production
US20120129242A1 (en) * 2010-11-23 2012-05-24 Charles David Gilliam Falling Film Evaporator
CN102861449A (en) * 2012-10-15 2013-01-09 江苏中圣高科技产业有限公司 Evaporator for strengthening heat transmission and avoiding scaling
CN106989375A (en) * 2017-05-19 2017-07-28 天津市龙津科技有限公司 Electromagnetic heating steam boiler system and its control method
CN207153134U (en) * 2017-08-28 2018-03-30 新能能源有限公司 A kind of falling film evaporation tower
CN208312343U (en) * 2018-06-06 2019-01-01 浙江大学 A kind of Non-scale steam generator

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