CN217843818U - Steam boiler with novel heat exchange pipeline structure - Google Patents
Steam boiler with novel heat exchange pipeline structure Download PDFInfo
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- CN217843818U CN217843818U CN202221790350.9U CN202221790350U CN217843818U CN 217843818 U CN217843818 U CN 217843818U CN 202221790350 U CN202221790350 U CN 202221790350U CN 217843818 U CN217843818 U CN 217843818U
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Abstract
The utility model discloses a steam boiler with a novel heat exchange pipeline structure, which is provided with a combustion heat exchange device and comprises a combustor, a main heat exchanger and a steam heat exchange pipeline; the steam heat exchange pipeline comprises a high-temperature heat exchange section, an external steam connecting section and a superheated steam section which are sequentially communicated; the high-temperature heat exchange section is arranged on the high-temperature heat exchange module, and the superheated steam section is arranged on the superheated heat exchange module; the liquid or steam in the steam heat exchange pipeline flows in sequence along the high-temperature heat exchange section, the external steam connecting section and the superheated steam section. The utility model discloses, the final position of transforming of steam is terminal superheated steam section in the steam heat transfer pipeline, and the temperature that the overheated heat exchange module that corresponds is in 500 to 700 ℃ of scope intervals, and the metal heat exchange tube is in this ambient temperature interval, compares in high temperature environment and the vapor contact of high temperature heat exchange module, has stronger corrosion-resistant ability of breaking to effectively reduce the phenomenon that burning heat transfer device damaged, improve life.
Description
Technical Field
The utility model relates to a steam boiler technical field, in particular to steam boiler with novel heat transfer pipeline structure.
Background
Steam boiler refers to a boiler plant that produces steam. The combustion heat exchange device of the steam boiler is generally arranged in an inverted vertical structure, and an air inlet, a combustor, a heat exchanger and an air outlet are sequentially arranged from top to bottom. The heat exchange pipeline that corresponds the setting with vertical burning heat transfer device, the water inlet setting is in the below, and steam outlet sets up at last minute, by supreme circuitous coiling setting down to through liquid filling effect, make the liquid water of non-gasification can effectively fill in heat exchange pipeline. And in the process that liquid water moves forwards in the heat exchange pipeline, the liquid water is converted into a semi-liquid semi-water vapor mixed state from a liquid state, and further converted into water vapor to be sent out from a steam outlet. However, in the combustion heat exchange device with the inverted vertical structure, the heat exchange pipeline is positioned in a high-temperature area close to the top of the heat exchanger and close to the combustor, the temperature of the area reaches 1000 to 1300 ℃, a steam backflow phenomenon can be generated in the operation process, when the steam flows back to the high-temperature area, the heat exchange pipeline is contacted with the steam in a high-temperature environment of 1000 to 1300 ℃, the corrosion or the rupture phenomenon is easily generated, the steam boiler is damaged, and the service life is short.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a steam boiler with novel heat transfer pipeline structure.
The utility model discloses a technical scheme that its technical problem was solved to an embodiment adopted is: a steam boiler with a novel heat exchange pipeline structure is provided with a combustion heat exchange device, wherein the combustion heat exchange device comprises a combustor, a main heat exchanger and a steam heat exchange pipeline;
the main heat exchanger comprises a high-temperature heat exchange module and a superheating heat exchange module; the high-temperature heat exchange module is arranged close to the combustor, and the overheating heat exchange module is arranged on one side of the high-temperature heat exchange module, which is far away from the combustor;
the steam heat exchange pipeline comprises a high-temperature heat exchange section, an external steam connecting section and a superheated steam section which are sequentially communicated; the high-temperature heat exchange section is arranged on the high-temperature heat exchange module, and the superheated steam section is arranged on the superheated heat exchange module; and liquid or steam in the steam heat exchange pipeline flows in sequence along the high-temperature heat exchange section, the external steam connecting section and the superheated steam section.
Optionally, the external steam connecting section is provided with a pressure changing member; the pressure intensity changing piece can divide the external steam connecting section into a front steam channel and a rear steam channel with different pressure intensities.
Optionally, the pressure varying member is a detachable adjustable flow regulator.
Optionally, the pressure changing member is a pressure adjusting sheet fixed in the external steam connecting section.
Optionally, the outer edge of the pressure regulating sheet is fixed in the external steam connecting section; and the middle part of the pressure regulating sheet is provided with a beam converging hole, and the aperture of the beam converging hole is smaller than that of the external steam connecting section.
Optionally, the superheating heat exchange module comprises a fluid superheating area and a steam superheating area; the steam heat exchange pipeline also comprises a fluid heat exchange section; the fluid heat exchange section is arranged in the fluid overheating area, and the superheated steam section is arranged in the steam overheating area; and liquid or steam in the steam heat exchange pipeline sequentially flows along the fluid heat exchange section, the high-temperature heat exchange section, the external steam connecting section and the superheated steam section.
Optionally, the fluid superheating area is arranged close to the high-temperature heat exchange module, and the steam superheating area is arranged on one side of the fluid superheating area, which is far away from the high-temperature heat exchange module.
Optionally, the steam heat exchange pipeline is one or a combination of a plurality of flat pipes, round pipes, rectangular pipes or finned pipes.
The utility model has the advantages that: the main heat exchanger comprises a high-temperature heat exchange module and an overheating heat exchange module, wherein the high-temperature heat exchange module is arranged close to the combustor, and the temperature of the high-temperature heat exchange module region reaches the range of 1000-1300 ℃; then the high-temperature gas is sent to an overheating heat exchange module which is arranged close to the high-temperature heat exchange module, and the temperature of the area reaches the range of 500-700 ℃; the steam heat exchange pipeline comprises a high-temperature heat exchange section, an external steam connecting section and a superheated steam section which are sequentially communicated, and liquid or steam flows forwards in sequence. The high-temperature heat exchange section is arranged in the high-temperature heat exchange module and is a working area for carrying out main heat exchange, and most of liquid can be converted into steam or semi-liquid semi-water vapor mixed form in the high-temperature heat exchange section; then flows to the superheated steam section through the external steam connecting section, absorbs heat again in the superheated steam section, and is completely converted into steam, thereby sending out of the steam boiler. The utility model discloses, the final position of transforming of steam is terminal superheated steam section in the steam heat transfer pipeline, and the regional temperature of the overheated heat exchange module that corresponds is 500 to 700 ℃ within range intervals, and the metal heat exchange tube is in this ambient temperature interval, compares in high temperature environment and the vapor contact of high temperature heat exchange module, has stronger corrosion-resistant ability of breaking to effectively reduce the phenomenon that burning heat transfer device damaged, improve life.
In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a combustion heat exchange device with a novel heat exchange pipeline structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the combustion heat exchange device shown in FIG. 1 with the packaging casing removed;
FIG. 3 is a front view of the combustion heat exchange unit of FIG. 1;
FIG. 4 is a cross-sectional view of the combustion heat exchange device of FIG. 3 taken along line V1-V1;
fig. 5 is a schematic view of the path direction of the steam heat exchange pipeline according to one embodiment of the present invention;
fig. 6 is a schematic structural view of the pressure adjustment sheet according to one embodiment of the present invention.
Description of the main element symbols:
100. a burner; 200. a main heat exchanger; 210. a high temperature heat exchange module; 220. an superheat heat exchange module; 221. a fluid superheat zone; 222. a steam overheating zone; 300. a steam heat exchange line; 310. a fluid heat exchange section; 320. a high temperature heat exchange section; 330. an external steam connecting section; 340. a superheated steam section; 400. a pressure varying member; 410. a pressure regulating sheet; 420. and (7) a beam-collecting hole.
Detailed Description
This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.
In the description of the present invention, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as excluding the number, and the terms greater than, less than, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly defined, the terms "set," "mounted," "connected," and the like are to be understood in a broad sense, and may be directly connected or indirectly connected through an intermediate medium, for example; can be fixedly connected, can be detachably connected and can be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical field can reasonably determine the specific meaning of the words in the utility model by combining the specific content of the technical scheme.
Examples
Referring to fig. 1 to 6, in the steam boiler having a novel heat exchange pipeline structure provided in the present invention, the steam boiler is provided with a combustion heat exchange device, and the combustion heat exchange device includes a burner 100, a main heat exchanger 200, and a steam heat exchange pipeline 300;
the main heat exchanger 200 includes a high temperature heat exchange module 210 and a superheating heat exchange module 220; the high-temperature heat exchange module 210 is arranged close to the burner 100, and the superheating heat exchange module 220 is arranged on the side, far away from the burner 100, of the high-temperature heat exchange module 210;
the steam heat exchange pipeline 300 comprises a high-temperature heat exchange section 320, an external steam connecting section 330 and a superheated steam section 340 which are sequentially communicated; the high-temperature heat exchange section 320 is arranged on the high-temperature heat exchange module 210, and the superheated steam section 340 is arranged on the superheated heat exchange module 220; the liquid or steam in the steam heat exchange pipe 300 flows along the high temperature heat exchange section 320, the external steam connection section 330 and the superheated steam section 340 in sequence.
In the utility model, the main heat exchanger comprises a high temperature heat exchange module 210 and an overheat heat exchange module 220, wherein the high temperature heat exchange module 210 is arranged close to the burner 100, and the temperature of the high temperature heat exchange module 210 region reaches the range of 1000 to 1300 ℃; then the high-temperature gas is sent to the overheating heat exchange module 220, the overheating heat exchange module 220 is arranged close to the high-temperature heat exchange module 210, and the temperature of the area reaches the range of 500-700 ℃; the steam heat exchange pipeline 300 comprises a high-temperature heat exchange section 320, an external steam connection section 330 and a superheated steam section 340 which are sequentially communicated, and liquid or steam flows forward sequentially. The high-temperature heat exchange section 320 is arranged in the high-temperature heat exchange module 210 and is a working area for carrying out main heat exchange, and most of liquid can be converted into steam or semi-liquid semi-water vapor mixed form in the high-temperature heat exchange section 320; then, the steam flows to the superheated steam section 340 through the external steam connection section 330, and is completely converted into steam through heat absorption again in the superheated steam section 340, so as to be sent out of the steam boiler. The utility model discloses, the final position of transforming of steam is terminal superheated steam section 340 in steam heat exchange pipeline 300, and the temperature that the overheated heat exchange module 220 that corresponds is within a definite time 500 to 700 ℃ within a definite time, and the metal heat exchange tube is within a definite time at this ambient temperature, compares in high temperature environment and the vapor contact of high temperature heat exchange module 210, has stronger corrosion-resistant ability of breaking to effectively reduce the phenomenon that burning heat transfer device damaged, improve life.
In this embodiment, the external steam connection section 330 is provided with a pressure varying member 400; the pressure varying member 400 may separate the external steam connection section 330 into two front and rear steam passages having different pressures. The pressure of the liquid water or semi-liquid semi-water vapor mixture in the steam heat exchange pipeline 300 is higher than that of the gaseous steam, so that when the external steam connecting section 330 is divided into steam channels with different pressures at the front end and the rear end by the pressure varying member 400, the gaseous steam can diffuse towards the steam channel with relatively low pressure. The steam channel with high pressure is positioned at one side close to the high-temperature heat exchange section 320, and the steam channel with low pressure is positioned at one side close to the superheated steam section 340, so that the gaseous steam is diffused towards the superheated steam section 340, the steam of the superheated steam section 340 is effectively prevented from flowing back to the high-temperature heat exchange section, and the high-temperature heat exchange section is prevented from being corroded due to the flowing back steam.
In some embodiments, the pressure varying member 400 is a removably mounted adjustable flow regulator. The adjustable flow regulator is a direct application to prior art products, where the detailed second rate is not further applied. The flow rate of the semi-liquid semi-vapor passing through the flow regulator and near the superheated steam section 340 can be changed by the manufacturer through the flow regulator to change the pressure on that side to match different fuels and use environments for adjustment.
Referring to fig. 6, in some embodiments, the pressure varying member 400 is a pressure adjusting plate 410 fixed in the external steam connecting section 330 to avoid the user's misoperation.
Specifically, the outer edge of the pressure regulating sheet 410 is fixed in the external steam connection section 330; the middle part of the pressure adjusting sheet 410 is provided with a converging hole 420, and the aperture of the converging hole 420 is smaller than that of the external steam connecting section 330. According to the venturi effect, the fluid restricted to flow in the external steam connection 330 has an increased flow velocity when the converging hole 420 passes through the reduced flow cross section, which is inversely proportional to the flow cross section. Since the flow rate is increased with the decrease of the fluid pressure according to bernoulli's law, the pressure of the pressure adjusting plate 410 is decreased at the side close to the superheated steam section 340, and the gaseous steam is diffused and flows toward the side close to the superheated steam section 340 where the pressure of the external steam connecting section 330 is relatively low, thereby effectively preventing the steam from flowing back to the high temperature heat exchange section.
In some embodiments, the superheating heat exchange module 220 comprises a fluid superheating area 221 and a steam superheating area 222; steam heat-exchange circuit 300 further includes a fluid heat-exchange section 310; the fluid heat exchange section 310 is arranged in the fluid superheating area 221, and the superheated steam section 340 is arranged in the steam superheating area 222; the liquid or vapor in the vapor heat-exchange conduit 300 flows in sequence along the fluid heat-exchange section 310, the high-temperature heat-exchange section 320, the external vapor connection section 330 and the superheated vapor section 340. Liquid water flows through the fluid heat exchange section 310 arranged in the fluid superheating area 221 in the steam heat exchange pipeline 300, and forms a high-temperature liquid or high-temperature semi-liquid semi-water vapor mixed state after effectively absorbing and utilizing the heat of the superheating heat exchange module 220; and then enters the high temperature heat exchange section 320 to improve the energy absorption utilization rate. Specifically, the fluid superheating area 221 and the steam superheating area 222 are two independent working areas, and the fluid heat-exchange section 310 and the steam heat-exchange section are also two independent working areas.
Further, the fluid superheating area 221 is disposed near the high-temperature heat exchange module 210, and the steam superheating area 222 is disposed on a side of the fluid superheating area 221 away from the high-temperature heat exchange module 210. The steam superheating area 222 is arranged on one side of the fluid superheating area 221 far away from the high-temperature heat exchange module 210, and because the steam superheating area 222 is far away from the combustor 100 relative to the fluid superheating area 221, the temperature of the superheated steam section 340 where steam is mainly formed and filled is relatively lower, and therefore the metal heat exchange pipe of the superheated steam section 340 is relatively less prone to corrosion or cracking, the phenomenon that the combustion heat exchange device is damaged is effectively reduced, and the service life is prolonged.
In this embodiment, the steam heat exchange pipeline 300 is a combination of one or more of a flat pipe, a circular pipe, a rectangular pipe, or a finned pipe, according to the arrangement structure of the combustion heat exchange device and the product positioning.
In this embodiment, the fluid heat exchange section 310, the high temperature heat exchange section 320 and the superheated steam section 340 of the steam heat exchange pipeline 300 are in the main heat exchanger 200, and can use a single-channel coil structure or a structure of a plurality of heat exchange pipes matching with a rotary port to perform reciprocating and circuitous pipe distribution according to the arrangement requirement of the combustion heat exchange device and by combining the means of the prior art, and other steam boiler combustion heat exchange devices have the existing pipe distribution structure.
Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications and substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. A steam boiler with a novel heat exchange pipeline structure is provided with a combustion heat exchange device, and is characterized in that the combustion heat exchange device comprises a combustor (100), a main heat exchanger (200) and a steam heat exchange pipeline (300);
the main heat exchanger (200) comprises a high temperature heat exchange module (210) and a superheating heat exchange module (220); the high-temperature heat exchange module (210) is arranged close to the combustor (100), and the overheating heat exchange module (220) is arranged on the side, away from the combustor (100), of the high-temperature heat exchange module (210);
the steam heat exchange pipeline (300) comprises a high-temperature heat exchange section (320), an external steam connecting section (330) and a superheated steam section (340) which are sequentially communicated; the high-temperature heat exchange section (320) is arranged on the high-temperature heat exchange module (210), and the superheated steam section (340) is arranged on the superheated heat exchange module (220); the liquid or the steam in the steam heat exchange pipeline (300) flows along the high-temperature heat exchange section (320), the external steam connecting section (330) and the superheated steam section (340) in sequence.
2. A steam boiler with a novel heat exchange tube structure according to claim 1, characterized in that: the external steam connecting section (330) is provided with a pressure changing piece (400); the pressure changing piece (400) can enable the external steam connecting section (330) to be divided into a front steam channel and a rear steam channel, wherein the front steam channel and the rear steam channel are different in pressure.
3. A steam boiler with a novel heat exchange tube structure according to claim 2, characterized in that: the pressure intensity changing piece (400) is an adjustable flow regulator which is detachably arranged.
4. A steam boiler with a novel heat exchange tube structure according to claim 2, characterized in that: the pressure changing member (400) is a pressure adjusting sheet (410) fixed in the external steam connecting section (330).
5. A steam boiler with a novel heat exchange tube structure according to claim 4, characterized in that: the outer edge of the pressure adjusting sheet (410) is fixed in the external steam connecting section (330); the middle part of the pressure intensity adjusting sheet (410) is provided with a beam-closing hole (420), and the aperture of the beam-closing hole (420) is smaller than that of the external steam connecting section (330).
6. A steam boiler with a novel heat exchange tube structure according to claim 1, characterized in that: the superheating heat exchange module (220) comprises a fluid superheating area (221) and a steam superheating area (222); the steam heat-exchange circuit (300) further comprises a fluid heat-exchange section (310); the fluid heat exchange section (310) is arranged in the fluid superheating area (221), and the superheated steam section (340) is arranged in the steam superheating area (222); the liquid or steam in the steam heat exchange pipeline (300) flows in sequence along the fluid heat exchange section (310), the high-temperature heat exchange section (320), the external steam connecting section (330) and the superheated steam section (340).
7. A steam boiler with a novel heat exchange tube structure according to claim 6, characterized in that: the fluid overheating area (221) is arranged close to the high-temperature heat exchange module (210), and the steam overheating area (222) is arranged on the side, far away from the high-temperature heat exchange module (210), of the fluid overheating area (221).
8. A steam boiler with a novel heat exchange tube structure according to claim 1, characterized in that: the steam heat exchange pipeline (300) is one or a combination of a plurality of flat pipes, round pipes, rectangular pipes or finned pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790350.9U CN217843818U (en) | 2022-07-11 | 2022-07-11 | Steam boiler with novel heat exchange pipeline structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221790350.9U CN217843818U (en) | 2022-07-11 | 2022-07-11 | Steam boiler with novel heat exchange pipeline structure |
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| Publication Number | Publication Date |
|---|---|
| CN217843818U true CN217843818U (en) | 2022-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221790350.9U Active CN217843818U (en) | 2022-07-11 | 2022-07-11 | Steam boiler with novel heat exchange pipeline structure |
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|---|---|
| CN (1) | CN217843818U (en) |
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2022
- 2022-07-11 CN CN202221790350.9U patent/CN217843818U/en active Active
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