CN1148557C - Moistening heat exchanger for over-heat dry steam - Google Patents
Moistening heat exchanger for over-heat dry steam Download PDFInfo
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- CN1148557C CN1148557C CNB001110845A CN00111084A CN1148557C CN 1148557 C CN1148557 C CN 1148557C CN B001110845 A CNB001110845 A CN B001110845A CN 00111084 A CN00111084 A CN 00111084A CN 1148557 C CN1148557 C CN 1148557C
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Abstract
The present invention relates to a moistening heat exchanging device for overheated dry steam, which is composed of a tank body, heat exchanging pipe bundles, a high-temperature dry steam inlet pipe (opening), a valve, a water inlet pipe, a water outlet pipe and a water spraying system, wherein the tank body is provided with an air inlet pipe, a heat supplying water inlet pipe, a heat supplying water outlet pipe and a pollution discharging opening. The present invention is characterized in that the air inlet pipe (4) positioned at the upper half part of the tank body (1) is provided with a water spraying device (2), and an evaporating tray (3) is arranged below the opening of the air inlet pipe (4) but above the heat exchanging pipe bundles (5, 8); in the present invention, the overheated dry steam is directly used for exchanging heat with heat supplying recirculated water. The present invention has the advantages of simple structure, little space occupation, no three waste discharge, and convenient installation and management. The present invention is favorable for the realization of automatized control.
Description
The invention belongs to the high-temperature steam heat transmission equipment, particularly relate to the heat exchange of hyperthermia and superheating dry saturated steam and water.
Before the eighties, the heat transmission equipment major part of China is prolonged the structural design with the former Soviet Union and East Bloc, and it is bulky, and heat exchange efficiency is lower.In recent ten years, along with the emerge in multitude of heat-exchanger rigs such as board-like, spiral plate type, floating disc tubular type, bring very big benefit for the improvement and the development of the heat-exchanger rig of China.Widely popularize along with the power plant increases year by year with central heating, come heat supply to become possibility, it is reported that doing remote heat supply with 110～130 ℃ high-temperature water has thin, the thermal efficiency advantages of higher of diameter of conveying pipe with overheated dry flue gas.But present heat exchanger because of the common cause of its structure and material, can not reach direct direct heat transfer by high-temperature steam or overheated dry flue gas and water, and adopt expensive high duty alloy material inapplicable, also is difficult to reach; Strengthen the heat exchanger wall thickness, heat exchange property and efficient are greatly descended.Use special warming-up device, both wasted energy, bring a lot of troubles for again coupling installation and management, and be difficult to reach development automation control requirement.
The purpose of this invention is to provide a kind of moistening heat exchanger for over-heat dry steam, it can realize the heat exchange by overheated dry flue gas and heating system water, have simple in structure, heat exchange efficiency is high, pollution is little, install and convenient management.
The objective of the invention is to realize by the following technical solutions: overheated dry flue gas is added moisture content in a container, carry out the mode heat exchange of hot gas-hydrothermal exchange earlier, become the full steam that closes, its heat supply water pipe feeds in the container, but heat supply water and steam are independently being flowed in the space separately.Its principle is that overheated dry flue gas humidification and high efficient heat exchanging are carried out in same tank body, promptly in the heat exchange container jar, adopt overheated dry flue gas adding moisture content to reach humidification with it to feeding, concrete structure is that the tiny globule in jar first half flow into tank is contacted with dry flue gas, dry flue gas heats vaporize water rapidly and becomes the full steam that closes, the globule of not vaporized fully drops in the evaporating pan of heating, by further refinement and carburation by evaporation become the full steam that closes.Full close steam flow downward with heat-exchanging tube bundle in circulation water for heating carry out heat exchange, and outside heat-exchanging tube bundle, form condensed water, the bottom reservoir chamber that condensed water flows to jar through drip tray, condensed water can recycle in this device.
The present invention is made up of the spray system of tank body, heat-exchanging tube bundle, high temperature dry flue gas air inlet pipe (mouth), valve, water inlet pipe and water outlet pipe and water, promptly is provided with the humidification spray equipment on the top of tank body, is provided with heat-exchanging tube bundle, the heating system that flowing in tube bank water in jar.When starting the heating system circulating pump, system water is circulating in whole heating system through heat-exchanging tube bundle under the effect of pump.Start the tank system spray pump, open the high temperature intake valve and in jar, feed the hyperthermia and superheating dry flue gas, dry flue gas contacts the back by humidification with the droplet or the water on the evaporating pan of spray, to water is vaporized into the high temperature saturated vapor simultaneously, water vapour transmits heat through heat-exchanging tube bundle and to it, heated the system water in the heat-exchanging tube bundle, saturated vapor forms condensed water and downward drip, the bottom of falling jar at last after the heat exchange outside heat-exchanging tube bundle.Supply water by the forced circulation means of water to the humidification spray equipment of tank top again, form the circulation that goes round and begins again, promptly shower water is what can be recycled.
Advantage of the present invention is that the hyperthermia and superheating dry flue gas transfers full Heshui steam to behind shower water, collection humidification, vapour-water exchange, coagulate water and is recovered in one, and the thermal losses in tank body outside unmatchful, its heat can most of be absorbed by heat-exchanging tube bundle, can improve heat exchange efficiency greatly, thereby reach purpose of energy saving, can save the high duty alloy material, reduce manufacturing cost.Widely popularize along with China power plant increases year by year with central heating, directly use hyperthermia and superheating dry flue gas and circulation water for heating heat exchange, can obtain 110～130 ℃ more stable high-temperature water, to reach remote heating.And needn't purchase special warming-up device, and have simple in structurely, occupied ground is few, does not almost have three expense dischargings, pollutes for a short time, has made things convenient for and has installed and management, helps the realization that automation is controlled, and remarkable economic efficiency and social benefit are arranged, but promotion prospect is wide.
The invention will be further described below in conjunction with accompanying drawing and as embodiment:
Fig. 1 is the vertical section structure schematic diagram of the embodiment of the invention;
Fig. 2 is the rearview of Fig. 1;
Among the figure: the 1st, tank body, the 2nd, ring Y type spray head, the 3rd, melon pulp formula evaporating pan, the 4th, the high-temperature vapour import, the 5th, heat-exchanging tube bundle (A), the 6th, the condensed water catch tray, the 7th, the steam airflow fence, the 8th, heat-exchanging tube bundle B, the 9th, water-level control apparatus, the 10th, the heating system circulating water intake, the 11st, support, the 12nd, sewage draining exit, the 13rd, the heat-exchanging tube bundle connecting tube, the 14th, the heating system circulating water outlet, the 15th, water inlet, the 16th, tank body spray pump group, the 17th, delivery port, the 18th, intake-outlet communicating pipe.
In the embodiment shown in fig. 1, air inlet pipe 4 is positioned at the first half of tank body 1, water inlet 15 on tank body 1 inner chamber top is equipped with the spray head 2 of ring Y type water, its water jet is positioned on the air inlet 4, in jar 1, be provided with many group heat-exchanging tube bundles 5 and 8, tube bank 5 and 8 is parallel placement, its be arranged as line up vertical alternate; Mobile heating system water is arranged in tube bank in 5 and 8, each is restrained 5 and 8 and can be connection pipe serial connection is arranged outside jar, forms the string water loop, also can be separately independently heating system.
The parallel position that evaporating pan 3 is positioned at 4 mouthfuls of air inlet pipe descends and places on heat-exchanging tube bundle 5 and 8, at heat-exchanging tube bundle 5 be connected to condensed water catch tray 68 times, steam airflow fence 7 is housed between heat-exchanging tube bundle 5 and 8, and airflow fence 7 generally is placed in heat-exchanging tube bundle 8 oblique upper both sides.
Among Fig. 2, be communicated with by pipe 18, water pump 16 is installed therebetween at the water inlet 15 of the tank body 1 Lower Half delivery port 17 and the first half.The condensed water that produces in tank body 1 is assembled at last in the circulating water outlet 17 of tank body 1 bottom, is sprayed to the spray water inlet 15 at top again by water pump 16, makes humidification system form the circulation that goes round and begins again.
When starting the heating system circulating pump, system water is circulating in whole heating system through heat-exchanging tube bundle 5 and 8 under the effect of pump.Start tank system spray pump 16, open inlet valve and in jar 1, feed the overheated dry flue gas of high-temperature steam formula at steam inlet 4, dry flue gas contacts the back by humidification with the droplet or the water on the evaporating pan 3 of spray, to water is vaporized into high-temperature water vapor simultaneously, water vapour has heated the system water in heat-exchanging tube bundle 5 and 8, simultaneously at heat-exchanging tube bundle 5 and the outer formation of 8 pipes condensed water through heat-exchanging tube bundle 5 and 8 and transmit heat to it, accumulate in the condensed water catch tray 6, and fall the bottom of jar at last.By the humidification spray equipment 2 supply shower waters of spray pump 16, be vaporized again and form the circulation that goes round and begins again again to the tank top.
Heat transfer process: when high temperature or overheated dry flue gas when steam-gas inlet 4 enters in this equipment, carry out humidification by shower nozzle 2, it will be water is vaporized into to full closes steam, further fully be evaporated when the excessive globule drops in the melon pulp formula evaporating pan 3.Fullly then close steam with heat-exchanging tube bundle 4 carries out heat exchange, its condensed water flows to the bottom hydroeciums by drip tray 6, and drip tray 6 purposes are the heat exchange effect that does not influence heat-exchanging tube bundle 8.In steam flow heat-exchanging tube bundle 5, continue to flow to heat-exchanging tube bundle 8 through airflow fence 7 by both sides.
Heat-exchanging tube bundle 5 and 8 can adopt U type pipe, and tube-surface is selected screwed pipe, light pipe etc. for use according to operating position.
Evaporating pan 3 is for the netted flesh shape dish of the multilayer that water is worked out by refinement, when feeding overheated dry flue gas in the jar 1, the twine of forming evaporating pan 3 when the globule of larger particles drops on the twine, will further be refined as the littler globule by dry flue gas or saturated vapor heating.
In order to prevent that the system water leaving water temperature from surpassing design load, can be provided with automatic regulating apparatus in the present invention, with the state of control jar interior steam.The self-regulated state is an injection flow rate when design, requires when the leaving water temperature of system surpasses design load, and then the admission motor-driven valve slowly turns down automatically, the air inflow minimizing that makes jar; If delivery port is less than design temperature, spray pump reduces inflow automatically, is returned to design load up to leaving water temperature, otherwise otherwise.
Claims (6)
1, a kind of moistening heat exchanger for over-heat dry steam, comprise tank body, feed the interior heat-exchanging tube bundle of tank body and the circulating pump of water, on described tank body, be provided with the turnover pipe and the sewage draining exit of air inlet pipe, heat supply water, it is characterized in that air inlet pipe (4) is positioned at the first half of tank body (1), which is provided with the spray equipment (2) of water, evaporating pan (3) places air inlet pipe (4) mouthful down but on heat-exchanging tube bundle (5 and 8).
2, moistening heat exchanger for over-heat dry steam according to claim 1 is characterized in that evaporating pan (3) is the netted flesh shape dish of multilayer.
3, moistening heat exchanger for over-heat dry steam according to claim 1 is characterized in that being communicated with by pipe (18) at the condensed water delivery port (17) of tank body (1) bottom and the spray water inlet (15) of tank deck, and water pump (16) is installed therebetween.
4,, it is characterized in that under heat-exchanging tube bundle (5 and 8), being connected to condensed water catch tray (6) according to claim 1 or 2 or 3 described moistening heat exchanger for over-heat dry steam.
5, moistening heat exchanger for over-heat dry steam according to claim 1 is characterized in that between heat-exchanging tube bundle (5 and 8) steam airflow fence (7) being housed.
6, moistening heat exchanger for over-heat dry steam according to claim 5 is characterized in that airflow fence (7) is placed in the both sides of heat-exchanging tube bundle (8) oblique upper of below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110845A CN1148557C (en) | 2000-04-26 | 2000-04-26 | Moistening heat exchanger for over-heat dry steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110845A CN1148557C (en) | 2000-04-26 | 2000-04-26 | Moistening heat exchanger for over-heat dry steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1270300A CN1270300A (en) | 2000-10-18 |
| CN1148557C true CN1148557C (en) | 2004-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001110845A Expired - Fee Related CN1148557C (en) | 2000-04-26 | 2000-04-26 | Moistening heat exchanger for over-heat dry steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1148557C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104718350B (en) * | 2012-10-11 | 2016-06-22 | 三菱日立电力系统株式会社 | Condenser |
| CN107131771A (en) * | 2017-04-07 | 2017-09-05 | 苏州安利化工有限公司 | The guard method of esterification condensator tube sheet |
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2000
- 2000-04-26 CN CNB001110845A patent/CN1148557C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1270300A (en) | 2000-10-18 |
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