CN111425842A - Flow balance tube structure for improving flow of tube panel in middle of heating surface - Google Patents
Flow balance tube structure for improving flow of tube panel in middle of heating surface Download PDFInfo
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- CN111425842A CN111425842A CN202010264709.8A CN202010264709A CN111425842A CN 111425842 A CN111425842 A CN 111425842A CN 202010264709 A CN202010264709 A CN 202010264709A CN 111425842 A CN111425842 A CN 111425842A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
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Abstract
A flow balance tube structure for improving the flow of a tube panel in the middle of a heating surface belongs to the field of steam power generation boilers. The invention comprises a first heating surface inlet pipeline, a second heating surface inlet pipeline, an inlet header, a first inlet header flow balance pipe, a second inlet header flow balance pipe, a first outlet header flow balance pipe, a second outlet header flow balance pipe, a heating surface pipe panel, an outlet header, a first heating surface outlet pipeline and a second heating surface outlet pipeline. The invention has simple structure, ingenious design, convenient disassembly and assembly and firm assembly, and is suitable for popularization and use.
Description
Technical Field
The invention relates to a flow balance tube structure for improving flow of a tube panel in the middle of a heating surface, and belongs to the field of steam power generation boilers.
Background
The large-capacity and high-parameter steam power generation boiler in China mostly adopts a connection mode of leading in from two ends and leading out from two ends. Under the influence of the static pressure distribution mode of the header, the flow of the working medium passing through the middle tube panel is smaller than the flow of the working medium passing through the tube panels on the two sides of the heating surface adopting the connection mode.
As boiler capacity and parameters increase, the flow deviation of the tube panels of the heating surface will need to be more tightly controlled. So as to avoid the adverse effect of the deviation and the comprehensive effect of the smoke temperature deviation, forming worse effect on the tube panel passing through the working medium with smaller flow, and generating the phenomenon that the whole steam temperature level of the heating surface is low but the local heating surface is over-temperature in the actual operation process of the boiler. After the phenomenon occurs, the service life of the heating surface pipeline which easily causes local overtemperature is reduced, the generation rate of oxide skin on the inner wall of the pipeline is increased, and if the overtemperature is more serious, the pipe explosion accident of the heating surface pipeline is easily caused, so that the use safety and reliability of the boiler are influenced; in addition, after the rate of scale formation on the inner wall of the pipe is increased, the probability and amount of scale falling off will be increased rapidly along with the process of stopping and starting the boiler, resulting in high maintenance and repair costs for the thermal power plant.
Therefore, it is desirable to provide a flow balance tube structure for increasing the flow of the tube panel in the middle of the heating surface to solve the above-mentioned technical problems.
Disclosure of Invention
The present invention was developed in order to solve the problem of excessive wall temperature and working medium temperature of the tube panel in the middle of the heated surface, and a brief summary of the invention is provided below to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
a flow balance tube structure for improving the flow of a tube panel in the middle of a heating surface comprises a first heating surface inlet pipeline, a second heating surface inlet pipeline, an inlet header, a first inlet header flow balance tube, a second inlet header flow balance tube, a first outlet header flow balance tube, a second outlet header flow balance tube, a heating surface tube panel, an outlet header, a first heating surface outlet pipeline and a second heating surface outlet pipeline, wherein the first heating surface inlet pipeline and the second heating surface inlet pipeline are respectively arranged at the left end and the right end of the inlet header, the first heating surface outlet pipeline and the second heating surface outlet pipeline are respectively arranged at the left end and the right end of the outlet header, the upper end of the heating surface tube panel is fixedly arranged with the inlet header, the lower end of the heating surface tube panel is fixedly arranged with the outlet header, one end of the first inlet header flow balance tube is fixedly arranged with the first heating surface inlet pipeline, the other end of the first inlet header flow balance pipe is fixedly connected and installed with the inlet header, one end of the second inlet header flow balance pipe is fixedly connected and installed with the inlet header, the other end of the second inlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline, one end of the first outlet header flow balance pipe is fixedly connected and installed with the inlet header, the other end of the first outlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline, one end of the second outlet header flow balance pipe is fixedly connected and installed with the inlet header, and the other end of the second outlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline.
Preferably: the first heating surface inlet pipeline, the second heating surface inlet pipeline, the inlet header, the first inlet header flow balance pipe, the second inlet header flow balance pipe, the first outlet header flow balance pipe, the second outlet header flow balance pipe, the heating surface tube panel, the outlet header, the first heating surface outlet pipeline and the second heating surface outlet pipeline are all hollow pipelines.
Preferably: the first heating surface inlet pipeline, the second heating surface inlet pipeline, the inlet header, the first inlet header flow balance pipe, the second inlet header flow balance pipe, the first outlet header flow balance pipe, the second outlet header flow balance pipe, the heating surface tube panel, the outlet header, the first heating surface outlet pipeline and the second heating surface outlet pipeline are fixedly connected and communicated with each other.
In order to solve the problem of increasing the flow of the working medium passing through the tube panel in the middle of the heating surface, the invention provides the technical scheme that:
a flow balance tube structure for improving the flow of a tube panel in the middle of a heating surface comprises a first heating surface inlet pipeline, a second heating surface inlet pipeline, an inlet header, a first inlet header flow balance tube, a second inlet header flow balance tube, a first outlet header flow balance tube, a second outlet header flow balance tube, a heating surface tube panel, an outlet header, a first heating surface outlet pipeline and a second heating surface outlet pipeline, wherein the first heating surface inlet pipeline and the second heating surface inlet pipeline are respectively arranged at the left end and the right end of the inlet header, the first heating surface outlet pipeline and the second heating surface outlet pipeline are respectively arranged at the left end and the right end of the outlet header, the upper end of the heating surface tube panel is fixedly arranged with the inlet header, the lower end of the heating surface tube panel is fixedly arranged with the outlet header, one end of the first inlet header flow balance tube is fixedly arranged with the first heating surface inlet pipeline, the other end of the first inlet header flow balance pipe is fixedly connected and installed with the inlet header, one end of the second inlet header flow balance pipe is fixedly connected and installed with the inlet header, the other end of the second inlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline, one end of the first outlet header flow balance pipe is fixedly connected and installed with the inlet header, the other end of the first outlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline, one end of the second outlet header flow balance pipe is fixedly connected and installed with the inlet header, and the other end of the second outlet header flow balance pipe is fixedly connected and installed with the second heating surface inlet pipeline.
Preferably: the first heating surface inlet pipeline, the second heating surface inlet pipeline, the inlet header, the first inlet header flow balance pipe, the second inlet header flow balance pipe, the first outlet header flow balance pipe, the second outlet header flow balance pipe, the heating surface tube panel, the outlet header, the first heating surface outlet pipeline and the second heating surface outlet pipeline are all hollow pipelines.
The invention has the following beneficial effects:
1. the invention solves the problem of overhigh pipe wall temperature and working medium temperature of the pipe panel in the middle of the heating surface, slows down the generation rate of oxide skin on the inner wall of the pipeline and prolongs the service life;
2. the invention avoids the pipe explosion accident caused by over-high local temperature of the pipeline, and improves the safety and reliability of the boiler;
3. the flow balance tube structure for improving the flow of the tube panel in the middle of the heating surface has the advantages of simple structure, ingenious design, convenience in disassembly and assembly, firmness in assembly and suitability for popularization and application.
Drawings
FIG. 1 is a front view of a flow balance tube configuration for increasing the flow of a tube panel in the middle of a heated surface;
FIG. 2 is a side view of a flow balance tube configuration for increasing the throughput of a mid-platen heating surface;
in the figure, 1-1-a first heating surface inlet pipeline, 1-2-a second heating surface inlet pipeline, 2-an inlet header, 3-1-a first inlet header flow balance pipe, 3-2-a second inlet header flow balance pipe, 3-3-a first outlet header flow balance pipe, 3-4-a second outlet header flow balance pipe, 4-a heating surface pipe screen, 6-an outlet header, 7-1-a first heating surface outlet pipeline and 7-2-a second heating surface outlet pipeline.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the invention will be described by way of example only, and in connection with the accompanying drawings. It is to be understood that such description is merely illustrative and not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The connection mentioned in the invention is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection and includes but is not limited to folding edge connection, rivet connection, bonding connection, welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to threaded connection, snap connection, pin connection, hinge connection and other conventional detachment modes, when the specific connection mode is not clearly limited, at least one connection mode can be found in the existing connection modes by default to realize the function, and the skilled person can select according to the needs. For example: the fixed connection selects welding connection, and the detachable connection selects hinge connection.
The first embodiment is as follows: the embodiment is described with reference to fig. 1-2, and the flow balance tube structure for improving the flow of the central tube panel of the heating surface of the embodiment comprises a first heating surface inlet tube 1-1, a second heating surface inlet tube 1-2, an inlet header 2, a first inlet header flow balance tube 3-1, a second inlet header flow balance tube 3-2, a first outlet header flow balance tube 3-3, a second outlet header flow balance tube 3-4, a heating surface tube panel 4, an outlet header 6, a first heating surface outlet tube 7-1 and a second heating surface outlet tube 7-2, wherein the first heating surface inlet tube 1-1 and the second heating surface inlet tube 1-2 are respectively arranged at the left end and the right end of the inlet header 2, and the first heating surface outlet tube 7-1 and the second heating surface outlet tube 7-2 are respectively arranged at the left end and the right end of the outlet header 6 The upper end of a heating surface tube panel 4 is fixedly arranged with an inlet header 2, the lower end of the heating surface tube panel 4 is fixedly arranged with an outlet header 6, one end of a first inlet header flow balance tube 3-1 is fixedly arranged with a first heating surface inlet pipeline 1-1, the other end of the first inlet header flow balance tube 3-1 is fixedly connected with the inlet header 2, one end of a second inlet header flow balance tube 3-2 is fixedly connected with the inlet header 2, the other end of the second inlet header flow balance tube 3-2 is fixedly connected with the second heating surface inlet pipeline 1-2, one end of the first outlet header flow balance tube 3-3 is fixedly connected with the inlet header 2, the other end of the first outlet header flow balance tube 3-3 is fixedly connected with the second heating surface inlet pipeline 1-2, one end of the second outlet header flow balance tube 3-4 is fixedly connected with the inlet header 2, the other end of the second outlet header flow balance pipe 3-4 is fixedly connected and installed with the second heating surface inlet pipeline 1-2, and the purpose of increasing the flow of working media passing through the middle tube panel of the heating surface is achieved through the arrangement of the first inlet header flow balance pipe 3-1, the second inlet header flow balance pipe 3-2, the first outlet header flow balance pipe 3-3 and the second outlet header flow balance pipe 3-4, so that the effects of reducing the tube wall temperature and the working media temperature of the middle tube panel of the heating surface are achieved.
The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 2, and based on the first embodiment, a flow balance tube structure for increasing the flow of a tube panel in the middle of a heated surface in the present embodiment is described, where a first heated surface inlet tube 1-1, a second heated surface inlet tube 1-2, an inlet header 2, a first inlet header flow balance tube 3-1, a second inlet header flow balance tube 3-2, a first outlet header flow balance tube 3-3, a second outlet header flow balance tube 3-4, a heated surface tube panel 4, an outlet header 6, a first heated surface outlet tube 7-1, and a second heated surface outlet tube 7-2 are hollow tubes.
The third concrete implementation mode: the embodiment is described with reference to fig. 1-2, and based on a first specific embodiment, a flow balance tube structure for increasing the flow of a tube panel in the middle of a heated surface in the embodiment is described, where a first heated surface inlet tube 1-1, a second heated surface inlet tube 1-2, an inlet header 2, a first inlet header flow balance tube 3-1, a second inlet header flow balance tube 3-2, a first outlet header flow balance tube 3-3, a second outlet header flow balance tube 3-4, a heated surface tube panel 4, an outlet header 6, a first heated surface outlet tube 7-1, and a second heated surface outlet tube 7-2 are fixedly connected to each other, and each connection node is reasonably connected through technological measures.
It should be noted that, in the above embodiments, as long as the technical solutions can be aligned and combined without contradiction, those skilled in the art can exhaust all possibilities according to the mathematical knowledge of the alignment and combination, and therefore, the present invention does not describe the technical solutions after alignment and combination one by one, but it should be understood that the technical solutions after alignment and combination have been disclosed by the present invention.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (3)
1. A flow balance tube structure for improving the flow of a tube panel in the middle of a heating surface comprises a first heating surface inlet pipeline (1-1), a second heating surface inlet pipeline (1-2), an inlet header (2), a first inlet header flow balance tube (3-1), a second inlet header flow balance tube (3-2), a first outlet header flow balance tube (3-3), a second outlet header flow balance tube (3-4), a heating surface tube panel (4), an outlet header (6), a first heating surface outlet pipeline (7-1) and a second heating surface outlet pipeline (7-2), wherein the first heating surface inlet pipeline (1-1) and the second heating surface inlet pipeline (1-2) are respectively arranged and installed at the left end and the right end of the inlet header (2), and the first heating surface outlet pipeline (7-1) and the second heating surface outlet pipeline (7-2) are respectively arranged and installed at the left end and the right end of the inlet header (2) The upper end of a heating surface tube panel (4) is fixedly installed with an inlet header (2) at the left end and the right end of an outlet header (6), the lower end of the heating surface tube panel (4) is fixedly installed with the outlet header (6), one end of a first inlet header flow balance tube (3-1) is fixedly installed with a first heating surface inlet pipeline (1-1), the other end of the first inlet header flow balance tube (3-1) is fixedly connected with the inlet header (2), one end of a second inlet header flow balance tube (3-2) is fixedly connected with the inlet header (2), the other end of the second inlet header flow balance tube (3-2) is fixedly connected with a second heating surface inlet pipeline (1-2), one end of the first outlet header flow balance tube (3-3) is fixedly connected with the inlet header (2), and the other end of the first outlet header flow balance tube (3-3) is fixedly connected with the second heating surface inlet pipeline (1-2) 2) And one end of a second outlet header flow balance pipe (3-4) is fixedly connected and installed with the inlet header (2), and the other end of the second outlet header flow balance pipe (3-4) is fixedly connected and installed with a second heating surface inlet pipeline (1-2).
2. A flow balance tube structure for increasing the flow of a tube panel in the middle of a heated surface as claimed in claim 1, wherein: the heating surface heat exchanger comprises a first heating surface inlet pipeline (1-1), a second heating surface inlet pipeline (1-2), an inlet header (2), a first inlet header flow balance pipe (3-1), a second inlet header flow balance pipe (3-2), a first outlet header flow balance pipe (3-3), a second outlet header flow balance pipe (3-4), a heating surface tube panel (4), an outlet header (6), a first heating surface outlet pipeline (7-1) and a second heating surface outlet pipeline (7-2), which are all hollow pipelines.
3. A flow balance tube structure for increasing the flow of a tube panel in the middle of a heated surface as claimed in claim 1, wherein: the heating surface heat exchanger comprises a first heating surface inlet pipeline (1-1), a second heating surface inlet pipeline (1-2), an inlet header (2), a first inlet header flow balance pipe (3-1), a second inlet header flow balance pipe (3-2), a first outlet header flow balance pipe (3-3), a second outlet header flow balance pipe (3-4), a heating surface tube panel (4), an outlet header (6), a first heating surface outlet pipeline (7-1) and a second heating surface outlet pipeline (7-2), wherein the fixed connection parts of the first heating surface inlet pipeline (1-1), the second heating surface inlet pipeline (1-2), the inlet header flow balance pipe, the first inlet header flow balance pipe (3-1), the second inlet header flow balance pipe (.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264709.8A CN111425842A (en) | 2020-04-07 | 2020-04-07 | Flow balance tube structure for improving flow of tube panel in middle of heating surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010264709.8A CN111425842A (en) | 2020-04-07 | 2020-04-07 | Flow balance tube structure for improving flow of tube panel in middle of heating surface |
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| CN111425842A true CN111425842A (en) | 2020-07-17 |
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| CN202010264709.8A Pending CN111425842A (en) | 2020-04-07 | 2020-04-07 | Flow balance tube structure for improving flow of tube panel in middle of heating surface |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH467972A (en) * | 1966-12-29 | 1969-01-31 | Sulzer Ag | Steam generator with panel-like heating surfaces arranged above the combustion chamber |
| CN203115999U (en) * | 2013-03-07 | 2013-08-07 | 武汉凯迪工程技术研究总院有限公司 | Vapor-liquid self-circulation type cooling revert device of biomass boiler |
| CN206094030U (en) * | 2016-09-14 | 2017-04-12 | 中国大唐集团科学技术研究院有限公司 | Boiler rear screen over heater |
| CN207539885U (en) * | 2017-10-30 | 2018-06-26 | 东方电气集团东方锅炉股份有限公司 | A kind of boiler back end ductwork convection heating surface hanging structure |
| CN108211790A (en) * | 2018-02-09 | 2018-06-29 | 河南环碧环保工程设备有限公司 | A kind of SCR denitration device and denitrating technique using ammonia-spraying grid |
| CN110617468A (en) * | 2019-09-04 | 2019-12-27 | 上海锅炉厂有限公司 | High-temperature heating surface optimized arrangement mode |
-
2020
- 2020-04-07 CN CN202010264709.8A patent/CN111425842A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH467972A (en) * | 1966-12-29 | 1969-01-31 | Sulzer Ag | Steam generator with panel-like heating surfaces arranged above the combustion chamber |
| CN203115999U (en) * | 2013-03-07 | 2013-08-07 | 武汉凯迪工程技术研究总院有限公司 | Vapor-liquid self-circulation type cooling revert device of biomass boiler |
| CN206094030U (en) * | 2016-09-14 | 2017-04-12 | 中国大唐集团科学技术研究院有限公司 | Boiler rear screen over heater |
| CN207539885U (en) * | 2017-10-30 | 2018-06-26 | 东方电气集团东方锅炉股份有限公司 | A kind of boiler back end ductwork convection heating surface hanging structure |
| CN108211790A (en) * | 2018-02-09 | 2018-06-29 | 河南环碧环保工程设备有限公司 | A kind of SCR denitration device and denitrating technique using ammonia-spraying grid |
| CN110617468A (en) * | 2019-09-04 | 2019-12-27 | 上海锅炉厂有限公司 | High-temperature heating surface optimized arrangement mode |
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Application publication date: 20200717 |
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