CN222911968U - A large-capacity boiler flat-plate feedwater heater device - Google Patents
A large-capacity boiler flat-plate feedwater heater device Download PDFInfo
- Publication number
- CN222911968U CN222911968U CN202421776139.0U CN202421776139U CN222911968U CN 222911968 U CN222911968 U CN 222911968U CN 202421776139 U CN202421776139 U CN 202421776139U CN 222911968 U CN222911968 U CN 222911968U
- Authority
- CN
- China
- Prior art keywords
- boiler
- plate
- connecting pipe
- flat
- heater device
- 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.)
- Active
Links
Landscapes
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
本申请公开了一种大容量锅炉平板式给水加热器装置，属于锅炉技术领域。大容量锅炉平板式给水加热器装置，包括：依次连接并纵向布置在锅筒旋风分离器与顶部波形板之间的蒸汽空间内的第一连接管、第一集箱、换热管、第二集箱和第二连接管；第一连接管还用于连接给水系统，第二连接管还用于连接省煤器系统。本申请实施例提供的一种大容量锅炉平板式给水加热器装置，通过设置在锅筒蒸汽空间的平板式给水加热器调整省煤器的给水温度，以便于锅炉低负荷或工况变化时，调节和保持锅炉出口烟气温度在最低温度以上。该加热器一方面保证良好的传热效果，另一方面可防止炉水的腐蚀，延长了加热器的使用寿命，提高了锅炉运行的经济效益。
The present application discloses a large-capacity boiler flat-plate feedwater heater device, which belongs to the field of boiler technology. The large-capacity boiler flat-plate feedwater heater device includes: a first connecting pipe, a first header, a heat exchange pipe, a second header, and a second connecting pipe, which are sequentially connected and longitudinally arranged in the steam space between the drum cyclone separator and the top corrugated plate; the first connecting pipe is also used to connect the feedwater system, and the second connecting pipe is also used to connect the economizer system. A large-capacity boiler flat-plate feedwater heater device provided in an embodiment of the present application adjusts the feedwater temperature of the economizer by means of a flat-plate feedwater heater arranged in the steam space of the drum, so as to adjust and maintain the boiler outlet flue gas temperature above the minimum temperature when the boiler is under low load or the operating conditions change. On the one hand, the heater ensures a good heat transfer effect, and on the other hand, it can prevent the corrosion of boiler water, extend the service life of the heater, and improve the economic benefits of boiler operation.
Description
Technical Field
The application belongs to the technical field of boilers, and particularly relates to a high-capacity boiler flat-plate type feedwater heater device.
Background
At present, along with the continuous improvement of the living standard of people, the corresponding household garbage heat value is also increased, and the high-capacity high-parameter garbage incineration waste heat boiler becomes a trend. In the operation of the waste incineration waste heat boiler, corrosion of a heating surface is one of the main problems, long-term stable operation of the boiler is often influenced, and direct economic loss is brought to a power plant. If the temperature of the discharged smoke is too low, the economizer can be corroded at low temperature, and on the other hand, the temperature needs to be controlled within a certain range to meet the requirements of the deacidification treatment of the smoke in consideration of the subsequent smoke treatment system of the boiler. Therefore, the control of the boiler exhaust gas temperature is a problem to be solved urgently, and particularly, the condition that the exhaust gas temperature is too low easily occurs when the garbage heat value is unstable or the garbage is operated under low load. The feed water heater device in the boiler barrel can effectively adjust the exhaust gas temperature so as to avoid corrosion of a heating surface and ensure stable operation of the boiler.
The coil type boiler feed water heater adopted in the past can only be arranged at two ends of a boiler barrel due to the structural limitation, has small heat exchange area and is generally used for a small-capacity boiler. The large-capacity high-parameter waste incineration waste heat boiler has the advantages that the structure span is large, the heating surface is large, the heating is uneven, the exhaust gas temperature is difficult to control, the coil type feed water heater has small heat exchange area, the effect on the large-capacity high-parameter waste incineration waste heat boiler is very little, and the effect of adjusting the feed water temperature of the economizer can not be achieved.
Disclosure of utility model
In order to solve the technical problems, the application provides a flat-plate type feedwater heater device of a large-capacity boiler, which is characterized in that the flat-plate type feedwater heater device is arranged in a steam space between a cyclone separator and a top corrugated plate separator in a drum and is longitudinally arranged along the length direction of the drum, the space between the cyclone separator and the top corrugated plate separator is fully utilized, the heat exchange area of the flat-plate type feedwater heater is in direct proportion to the straight length of the drum, the heat exchange area is effectively increased, and the water supply temperature of an economizer can be effectively adjusted, so that the aim of adjusting the exhaust gas temperature is fulfilled.
In order to achieve the purposes of the application, the technical scheme adopted by the application is as follows:
The embodiment of the application provides a high-capacity boiler flat-plate type feedwater heater device, which comprises a first connecting pipe, a first collecting tank, a heat exchange pipe, a second collecting tank and a second connecting pipe, wherein the first connecting pipe, the first collecting tank, the heat exchange pipe, the second collecting tank and the second connecting pipe are sequentially connected and longitudinally arranged in a steam space between a boiler barrel cyclone separator and a top corrugated plate;
the first connecting pipe is also used for connecting a water supply system, and the second connecting pipe is also used for connecting an economizer system.
Optionally, the length direction of the heat exchange tube is parallel to the length direction of the boiler barrel, so that the heated area is in direct proportion to the length of the boiler barrel.
Optionally, the high capacity boiler flat plate feedwater heater apparatus further includes:
the fixing assembly is used for fixing the first connecting pipe, the first collecting box, the heat exchange pipe, the second collecting box and the second connecting pipe in the steam space, and the heating surface is arranged in the steam space.
Optionally, the fixing assembly includes a tube clamp for fixing the heat exchange tube and a fixing steel plate connecting the tube clamp.
Optionally, the high capacity boiler flat plate feedwater heater apparatus further includes:
and the regulating valve is used for regulating the water supply flow of the first connecting pipe.
Compared with the prior art, the embodiment of the application has the beneficial effects that:
The heat exchange tube of the large-capacity boiler flat-plate type feedwater heater device provided by the embodiment of the application is in a straight tube form, and compared with a coiled feedwater heater, the large-capacity boiler flat-plate type feedwater heater device is simpler in structure, more convenient to manufacture and reduced in manufacturing cost. The steam space between the drum cyclone separator and the top corrugated plate is convenient to longitudinally arrange, the heat exchange area is in direct proportion to the length of the drum, the requirement of a large-capacity boiler on the adjustment of the water supply temperature of the economizer is met, the exhaust gas temperature can be effectively adjusted, the corrosion of a heating surface is avoided, the fuel is saved, the heat efficiency of the boiler is improved, and the safe and stable operation of the boiler is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic structural diagram of a flat-plate feedwater heater device for a large-capacity boiler according to an embodiment of the present application;
figure 2 shows a cross-sectional view A-A in figure 1.
Illustration of:
1. A first connection pipe; 2, a first collecting box, 3, heat exchange tubes, 4, pipe clamps, 5, a fixed steel plate, 6, a second collecting box and 7, a second connecting pipe.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In order to illustrate the technical scheme of the application, the following description is made by specific examples.
Referring to fig. 1 and 2, the flat-plate type feedwater heater device for a large capacity boiler provided by the embodiment of the application comprises a first connecting pipe 1, a first header 2, a heat exchange pipe 3, a second header 6 and a second connecting pipe 7 which are sequentially connected and longitudinally arranged in a steam space between a drum cyclone and a top corrugated plate, wherein the first connecting pipe 1 is also used for connecting a feedwater system, and the second connecting pipe 7 is also used for connecting an economizer system.
Therefore, the water supply enters the first collecting box 2 in the boiler barrel through the first connecting pipe 1, is heated by the heating surface of the heat exchange pipe 3, is collected to the second collecting box 6 at the other end, and then returns to the water supply mixing collecting box from the second connecting pipe 7 at the other end to enter the economizer system. Therefore, the water supply temperature of the economizer can be effectively adjusted, and the aim of adjusting the exhaust gas temperature is fulfilled.
According to the high-capacity boiler flat-plate type feed water heater device, the heat exchange tube 3 is in a straight tube form, and compared with a coiled feed water heater, the structure is simpler, the manufacture is more convenient, and the manufacturing cost is reduced. The steam space between the drum cyclone separator and the top corrugated plate is convenient to longitudinally arrange, the heat exchange area is in direct proportion to the length of the drum, the requirement of a large-capacity boiler on the adjustment of the water supply temperature of the economizer is met, the exhaust gas temperature can be effectively adjusted, the corrosion of a heating surface is avoided, the fuel is saved, the heat efficiency of the boiler is improved, and the safe and stable operation of the boiler is ensured.
In some embodiments of the application, the length direction of the heat exchange tube 3 is arranged parallel to the length direction of the drum, so that the heated area is proportional to the drum length. In other words, when the size of the boiler barrel is increased (or reduced), the size of the heat exchange tube 3 can be correspondingly increased (or reduced), so that the heated area is changed along with the size of the boiler barrel, the requirement of the boiler on the regulation of the water supply temperature of the economizer can be met all the time, and the exhaust gas temperature can be regulated effectively.
In some embodiments of the present application, the high capacity boiler flat plate feedwater heater apparatus further includes a fixing assembly for fixing the first connection pipe 1, the first header 2, the heat exchange pipe 3, the second header 6, and the second connection pipe 7 in the steam space, and the heating surface is disposed in the steam space. As an example, the fixing assembly includes a tube clamp 4 for fixing the heat exchange tube 3 and a fixing steel plate 5 connecting the tube clamp 4.
For example, the heat exchange tube 3 is fixed in the steam space of the cyclone separator and the top corrugated plate separator of the boiler through the tube clamp 4 and the fixed steel plate 5, and the heating surface is arranged in the steam space, so that on one hand, the heat of steam can be absorbed, and on the other hand, the corrosion of furnace water can be avoided. The heater is longitudinally arranged, the heated area is in direct proportion to the length of the boiler barrel, the requirement of the large-capacity boiler for adjusting the water supply temperature of the economizer is met, and the requirements of avoiding corrosion of the heated surface and meeting the exhaust gas temperature are met when the working condition of the boiler changes and the boiler runs under low load.
In some embodiments of the present application, the high capacity boiler flat plate feedwater heater apparatus further includes a regulating valve for regulating the feedwater flow of the first connection pipe 1. Therefore, the water supply temperature of the economizer can be flexibly adjusted by adjusting the water supply flow, so that the aim of adjusting the smoke exhaust temperature is fulfilled.
In summary, according to the flat-plate type feedwater heater device for the large-capacity boiler provided by the embodiment of the application, the feedwater with lower temperature enters the feedwater heater of the boiler barrel, and after the feedwater absorbs steam heat, the feedwater is sent into the economizer to adjust the feedwater temperature of the economizer, so that the heat of the economizer system is changed, and the temperature of flue gas at the outlet of the boiler can be adjusted and kept above the lowest temperature. The heater ensures good heat transfer effect on one hand, can prevent corrosion of furnace water on the other hand, prolongs the service life of the heater, and improves the economic benefit of boiler operation.
The foregoing embodiments are merely illustrative of the technical solutions of the present application, and not restrictive, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that modifications may still be made to the technical solutions described in the foregoing embodiments or equivalent substitutions of some technical features thereof, and that such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421776139.0U CN222911968U (en) | 2024-07-25 | 2024-07-25 | A large-capacity boiler flat-plate feedwater heater device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421776139.0U CN222911968U (en) | 2024-07-25 | 2024-07-25 | A large-capacity boiler flat-plate feedwater heater device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222911968U true CN222911968U (en) | 2025-05-27 |
Family
ID=95769357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421776139.0U Active CN222911968U (en) | 2024-07-25 | 2024-07-25 | A large-capacity boiler flat-plate feedwater heater device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222911968U (en) |
-
2024
- 2024-07-25 CN CN202421776139.0U patent/CN222911968U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201582842U (en) | Combined air preheater | |
| CN102563610A (en) | Energy saving system for boiler | |
| WO2024244960A1 (en) | Flue gas waste heat coupled condensation water-return heating system | |
| CN111928221A (en) | Condensing type gas steam generation module | |
| CN115307473A (en) | Heat storage system and method utilizing smoke heat of coal-fired boiler | |
| CN222911968U (en) | A large-capacity boiler flat-plate feedwater heater device | |
| WO2023024627A1 (en) | Gas-fired steam-injection boiler for oilfield | |
| CN212361989U (en) | Flue gas waste heat utilization system | |
| CN218672255U (en) | Bushing type air heater of anti dew point corrosion | |
| CN118856603A (en) | A large-capacity boiler flat-plate feedwater heater device | |
| CN216769435U (en) | Reheating steam heating system of high-parameter waste incineration exhaust-heat boiler | |
| CN207936055U (en) | Biomass recirculating fluidized bed boiler anticorrosion self compensation cryogenic heat exchanger system | |
| CN115218176B (en) | Heating system and method for heating primary air and low-temperature flue gas by using economizer water supply | |
| CN201866936U (en) | High efficiency recovery device for surplus heat of organic heat carrier boiler | |
| CN215062173U (en) | Flue gas heat multiple-effect utilization system | |
| CN212481362U (en) | Energy-saving corrosion-resistant efficient heat exchange device | |
| CN115876016A (en) | An intelligent phase change heat waste heat energy saving system | |
| CN116928690A (en) | Phase-change heat-transfer type cyclone preheater | |
| CN111810983B (en) | A system for eliminating hidden dangers of air preheater operation safety and control method thereof | |
| CN202229154U (en) | System for using organic heat carrier boiler smoke waste heat to generate low voltage steam | |
| CN204478120U (en) | Heat transfer interface temperature-controllable is adjustable flue gas waste heat recovery apparatus | |
| CN102322624A (en) | System utilizing organic heat carrier furnace flue gas waste heat to produce low-pressure steam | |
| CN222849291U (en) | Modular combined type garbage incineration boiler air preheater | |
| CN223375766U (en) | A SZS type steam boiler water preheating system | |
| CN219494257U (en) | Composite steam boiler system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |