CN112178606A - Steam generator - Google Patents
Steam generator Download PDFInfo
- Publication number
- CN112178606A CN112178606A CN202011085935.6A CN202011085935A CN112178606A CN 112178606 A CN112178606 A CN 112178606A CN 202011085935 A CN202011085935 A CN 202011085935A CN 112178606 A CN112178606 A CN 112178606A
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- China
- Prior art keywords
- combustion chamber
- water
- heat exchange
- communicated
- water inlet
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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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
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/46—Applications, arrangements, or dispositions of alarm or automatic safety devices responsive to low or high water level, e.g. for checking, suppressing, extinguishing combustion in boilers
Abstract
The invention relates to a steam generator, which comprises a control box, wherein the control box is used for controlling the gas quantity and the air quantity conveyed in a combustion chamber, and a gas outlet is also arranged on the control box; the combustion chamber is arranged in the water container, the combustion chamber is internally provided with a heat exchange pipe and a fabric combustor, the combustion chamber is cylindrical, one end of the fabric combustor is communicated with the gas outlet, the other end of the fabric combustor penetrates through the water container and the top of the combustion chamber to extend into the combustion chamber, and the number of the heat exchange pipes is multiple; the flue gas conversion cavity is communicated with the combustion chamber; the water inlet preheating cavity is internally provided with a water inlet pipe, the water inlet preheating cavity is provided with a third smoke outlet, and the water inlet pipe is communicated with the water liner; the flue gas conversion cavity is communicated with the water inlet preheating cavity so as to heat water in the water inlet preheating cavity and discharge flue gas from the third smoke outlet. The invention has compact structure, occupies no space and fully utilizes the heat of the flue gas.
Description
Technical Field
The invention belongs to the technical field of burners and steam generators, and particularly relates to a steam generator.
Background
The related art steam generator generally generates steam by exchanging heat generated by gas combustion with water. The conveying assembly of gas carries the gas to burn in the combustion chamber in order to produce heat, but the gas pipe that is used for supplying the gas is when communicating with the combustion chamber, and flue gas condensate water drips and is damaged the device in the combustion chamber easily in the combustion chamber, therefore also need arrange special condensation duct. This results in a steam generator requiring more components and occupying a larger space. In the prior art, high-temperature flue gas after combustion is directly discharged after heat exchange with water, heat in the flue gas cannot be effectively utilized, and the energy-saving environment-friendly concept is not met.
Disclosure of Invention
The invention aims to provide a steam generator which is compact in structure, does not occupy space, and is energy-saving and environment-friendly.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a steam generator comprising:
the control box is used for controlling the gas quantity and the air quantity conveyed in the combustion chamber, and a gas outlet is also formed in the control box;
the combustion chamber is arranged in the water container, the combustion chamber is internally provided with a heat exchange pipe and a fabric combustor, the combustion chamber is cylindrical, one end of the fabric combustor is communicated with the gas outlet, the other end of the fabric combustor penetrates through the water container and the top of the combustion chamber and extends downwards into the combustion chamber, and a plurality of heat exchange pipes are arranged;
the flue gas conversion cavity is communicated with the combustion chamber;
the water inlet preheating cavity is internally provided with a water inlet pipe, the water inlet preheating cavity is provided with a third smoke outlet, and the water inlet pipe is communicated with the water liner; the flue gas conversion cavity is communicated with the water inlet preheating cavity so as to heat water in the water inlet preheating cavity and discharge flue gas from the third smoke outlet.
In the invention, the fabric burner is inserted into the combustion chamber from top to bottom, so that the fabric burner can be prevented from being damaged by the condensation of the generated flue gas condensate water; the flue gas is required to flow back to the upper part of the combustion cavity to be discharged after heat exchange, most heat in the flame is absorbed, so that the emission of nitrogen oxides in the flue gas is effectively reduced, and condenser pipes and the like are avoided, so that the whole structure is more compact and simpler; the smoke outlet exchanges heat with the water inlet pipe in the water inlet preheating cavity while discharging smoke, water is preheated before the water inlet liner, the heat of the smoke can be fully utilized, and generated steam is finally discharged from the steam outlet.
Preferably, the combustion chamber and the water liner are cylindrical, the heat exchange tubes are arranged along the longitudinal direction of the combustion chamber and are annularly arranged in a multi-layer manner in the radial direction of the combustion chamber, and the heat exchange tubes on the outer layer are arranged in a gap between two adjacent heat exchange tubes on the inner layer, so that the heat exchange tubes on the inner layer and the outer layer are staggered; the fabric burner is cylindrical and is arranged in the middle of the heat exchange tube. The combustion chamber and the water container are cylindrical, so that heat can be uniformly dissipated from the middle to the periphery. This not only increases the heat exchange area of the heat exchange tube, but also makes the structure simple.
Preferably, the combustion chamber comprises annular side walls, a top wall and a bottom wall, the outer sides of the side walls, the top wall, the bottom wall and the heat exchange tubes are enclosed to form a combustion chamber, through holes communicated with the heat exchange tubes are respectively formed in the top wall and the bottom wall, two ends of each heat exchange tube are respectively communicated with the water container, and the top wall and the bottom wall are respectively welded with the annular side walls. This makes the weld all be located the outside in burning chamber, and the burning chamber is arranging in the water container completely, avoids high temperature flame directly to bake the weld, can increase effective heat transfer area again.
Preferably, a gap is reserved between the top of the annular side wall and the top wall, and the smoke conversion cavity is communicated with the top of the combustion chamber through the gap. The smoke needs to be discharged from the water liner in a reverse flow and upward manner, so that the flame temperature can be reduced. The heat exchange can be fully carried out when the flue gas is discharged.
Preferably, the top of the annular side wall is provided with a through hole for the fabric burner to pass through; the fabric burner is characterized by further comprising a sealing plate, wherein the sealing plate is fixed with the fabric burner and covers the through hole. The sealing plate is beneficial to strengthening the fixation of the fabric combustor and the combustion chamber and ensuring the sealing connection between the fabric combustor and the combustion chamber.
Preferably, the water container comprises a cylindrical cavity enclosed by the second shell and the cover plate, the steam generator further comprises a steam outlet for discharging steam, and the steam outlet is communicated with the upper part of the water container; the flue gas conversion cavity comprises a first shell with an open upper part, the first shell penetrates through the second shell and is communicated with the combustion chamber, and the top wall covers the combustion chamber and the upper part of the first shell. The top wall covers the second and first housings to reduce weld joints.
Preferably, a plurality of first smoke outlets are arranged below the first shell, a plurality of second smoke outlets corresponding to the first smoke outlets are arranged on the water inlet preheating cavity, and the water inlet preheating cavity is communicated with the water inlet preheating cavity through the first smoke outlets and the second smoke outlets. The water inlet preheating cavity discharges the flue gas to the outside through the first, second and third smoke outlets, and simultaneously, the heat exchange between the flue gas and the water inlet pipe in the water inlet preheating cavity is utilized; because first, the second exhaust port is a plurality of, can show the heat transfer area who increases flue gas and inlet tube.
Preferably, the control box comprises a box body, and the gas outlet is arranged on the box body; a control assembly, a pressure detection assembly, a fan, an electromagnetic valve and an air supply pipe are arranged in the box body, the air supply pipe is communicated with the gas outlet, the fan is used for mixing and conveying air and gas to the air supply pipe, and the electromagnetic valve is used for controlling the on-off of the gas; the control assembly is respectively and electrically connected with the pressure detection assembly, the fan and the electromagnetic valve. Each component is accommodated through the box body, so that the control box is convenient to move, carry and replace; the box body adjusts the fan through the control assembly according to the pressure value detected by the pressure detection assembly to enable the gas to be mixed with the gas according to a certain proportion; and the opening and closing of the control electromagnetic valve can realize intelligent control.
Preferably, still include liquid level detection subassembly, liquid level detection subassembly is used for monitoring the water level in the water courage, liquid level detection subassembly with control assembly electric connection. The water level in the water container can be intelligently detected through a control assembly in the control box.
Preferably, the flue gas preheating device further comprises a second water container, the second water container is communicated with the water container, the flue gas conversion cavity is arranged in the second water container, and the water inlet preheating cavity is communicated with the second water container. After the flue gas generated in the combustion chamber is subjected to first heat exchange in the water container, the flue gas is subjected to second heat exchange with the second water container in the flue gas conversion chamber, so that heat resources are fully utilized.
Drawings
Fig. 1 is a schematic structural view of a steam generator of embodiment 1;
fig. 2 is a schematic view of a disassembled structure of the steam generator of embodiment 1;
FIG. 3 is a schematic view of a combustion chamber structure of the steam generator of embodiment 1;
FIG. 4 is a schematic view of a disassembled structure of a combustion chamber of the steam generator of embodiment 1;
fig. 5 is a sectional view schematically showing the structure of the steam generator of embodiment 1;
fig. 6 is an exploded view of the steam generator of embodiment 1.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 to 6, a steam generator includes:
a steam generator comprising:
the control box 600 is used for controlling the gas quantity and the air quantity conveyed in the combustion chamber 201, and a gas outlet is further formed in the control box 600;
the gas burner comprises a water container 100, wherein a combustion chamber 201 is arranged in the water container 100, a heat exchange pipe 220 and a fabric burner 210 are arranged in the combustion chamber 201, the combustion chamber 201 is cylindrical, one end of the fabric burner 210 is communicated with a gas outlet, the other end of the fabric burner 210 penetrates through the top of the water container 100 and the top of the combustion chamber 201 and extends downwards into the combustion chamber 201, and a plurality of heat exchange pipes 220 are arranged;
a flue gas conversion cavity 400, wherein the flue gas conversion cavity 400 is communicated with the combustion chamber 201;
a water inlet preheating cavity 500, wherein a water inlet pipe is arranged in the water inlet preheating cavity 500, a third smoke outlet 503 is arranged on the water inlet preheating cavity 500, and the water inlet pipe is communicated with the water container 100; the flue gas conversion chamber 400 is communicated with the inlet preheating chamber 500 to heat the water in the inlet preheating chamber 500 and discharge the flue gas from the third smoke discharge opening 503.
The combustion chamber 201 and the water liner 100 are respectively cylindrical, the heat exchange tubes 220 are arranged along the longitudinal direction of the combustion chamber 201 and are arranged in a multi-layer annular arrangement in the radial direction of the combustion chamber 201, and the heat exchange tubes on the outer layer are arranged in a gap between two adjacent heat exchange tubes on the inner layer, so that the heat exchange tubes on the inner layer and the outer layer are arranged in a staggered manner; the fabric burner 210 is cylindrical and is disposed in the middle of the heat exchange tube 220. The cylindrical shape of the combustion chamber 201 and the water bladder 100 helps to uniformly dissipate heat from the middle to the periphery. This not only increases the heat exchange area of the heat exchange tube 220 but also makes the structure simple.
The combustion chamber 201 comprises annular side walls, a top wall 420 and a bottom wall 430, a combustion cavity is defined by the outer sides of the side walls, the top wall 420, the bottom wall 430 and the heat exchange tube 220, through holes 421 communicated with the heat exchange tube 220 are respectively formed in the top wall 420 and the bottom wall 430, two ends of the heat exchange tube 220 are respectively communicated with the water container 100, and the top wall 420 and the bottom wall 430 are respectively welded with the annular side walls. This makes the weld all be located the outside in combustion chamber, and the combustion chamber is arranging in water container 100 completely, avoids high temperature flame directly to bake the weld, can increase effective heat transfer area again.
A gap 422 is reserved between the top of the annular side wall and the top wall 420, and the flue gas conversion cavity 400 is communicated with the top of the combustion chamber 201 through the gap 422. The need for flue gases to be discharged from the water bladder 100 in a counter-current, upward direction reduces the flame temperature. The heat exchange can be fully carried out when the flue gas is discharged.
The top of the annular side wall is provided with a through hole 104 for the fabric burner 210 to pass through; the fabric burner further comprises a sealing plate 202, wherein the sealing plate 202 is fixed with the fabric burner 210, and the sealing plate 202 covers the through hole 104. The sealing plate facilitates the fixation of the fabric burner 210 to the combustion chamber 201 and ensures a sealed connection therebetween.
The water container 100 comprises a cylindrical cavity surrounded by a second shell 101 and a cover plate 103, the steam generator further comprises a steam outlet for discharging steam, and the steam outlet is communicated with the upper part of the water container 100; the flue gas conversion cavity 400 comprises a first shell with an open upper part, the first shell penetrates through the second shell to be communicated with the combustion chamber 201, and the top wall covers the combustion chamber 201 and the upper part of the first shell. The top wall covers the second and first housings to reduce weld joints.
The below of first casing is equipped with a plurality of first exhaust ports 401, advance water be equipped with on preheat the chamber 500 a plurality of with the second exhaust port 502 that first exhaust port 401 corresponds respectively, advance water preheat the chamber 500 and pass through first exhaust port 401 and second exhaust port 502 with advance water and preheat chamber 500 intercommunication. The water inlet preheating cavity 500 discharges the flue gas to the outside through the first, second and third smoke outlets 503, and simultaneously, the heat exchange between the flue gas and the water inlet pipe in the water inlet preheating cavity 500 is utilized; because the first smoke outlet 502 and the second smoke outlet 502 are multiple, the heat exchange area between the smoke and the water inlet pipe can be obviously increased.
The control box 600 comprises a box body, and the gas outlet is arranged on the box body; a control assembly, a pressure detection assembly, a fan, an electromagnetic valve and an air supply pipe are arranged in the box body, the air supply pipe is communicated with the gas outlet, the fan is used for mixing and conveying air and gas to the air supply pipe, and the electromagnetic valve is used for controlling the on-off of the gas; the control assembly is respectively and electrically connected with the pressure detection assembly, the fan and the electromagnetic valve. Each component is accommodated by the box body, so that the control box 600 is convenient to move, carry and replace; the box body adjusts the fan through the control assembly according to the pressure value detected by the pressure detection assembly to enable the gas to be mixed with the gas according to a certain proportion; and the opening and closing of the control electromagnetic valve can realize intelligent control.
Still include liquid level detection subassembly, liquid level detection subassembly is used for the monitoring water level in the water courage, liquid level detection subassembly with control assembly electric connection. The water level in the water bladder 100 can be intelligently detected through a control component in the control box 600.
In the invention, the fabric burner is inserted into the combustion chamber from top to bottom, so that the fabric burner can be prevented from being damaged by the condensation of the generated flue gas condensate water; the flue gas is required to flow back to the upper part of the combustion cavity to be discharged after heat exchange, most heat in the flame is absorbed, so that the emission of nitrogen oxides in the flue gas is effectively reduced, and condenser pipes and the like are avoided, so that the whole structure is more compact and simpler; the smoke outlet exchanges heat with the water inlet pipe in the water inlet preheating cavity while discharging smoke, water is preheated before the water inlet liner, the heat of the smoke can be fully utilized, and generated steam is finally discharged from the steam outlet.
The flue gas preheating device is characterized by further comprising a second water container, the second water container is communicated with the water container, the flue gas conversion cavity is arranged in the second water container, and the water inlet preheating cavity is communicated with the second water container. After the flue gas generated in the combustion chamber is subjected to first heat exchange in the water container, the flue gas is subjected to second heat exchange with the second water container in the flue gas conversion chamber, so that heat resources are fully utilized.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A steam generator, comprising:
the control box is used for controlling the gas quantity and the air quantity conveyed in the combustion chamber, and a gas outlet is also formed in the control box;
the combustion chamber is arranged in the water container, the combustion chamber is internally provided with a heat exchange pipe and a fabric combustor, the combustion chamber is cylindrical, one end of the fabric combustor is communicated with the gas outlet, the other end of the fabric combustor penetrates through the water container and the top of the combustion chamber and extends downwards into the combustion chamber, and a plurality of heat exchange pipes are arranged;
the flue gas conversion cavity is communicated with the combustion chamber;
the water inlet preheating cavity is internally provided with a water inlet pipe, the water inlet preheating cavity is provided with a third smoke outlet, and the water inlet pipe is communicated with the water liner; the flue gas conversion cavity is communicated with the water inlet preheating cavity so as to heat water in the water inlet preheating cavity and discharge flue gas from the third smoke outlet.
2. The steam generator of claim 1, wherein the combustion chamber and the water bladder are cylindrical, the heat exchange tubes are arranged along a longitudinal direction of the combustion chamber and are annularly arranged in a plurality of layers in a radial direction of the combustion chamber, and the heat exchange tubes of the outer layer are arranged in a gap between two adjacent heat exchange tubes of the inner layer so that the heat exchange tubes of the inner layer and the outer layer are staggered; the fabric burner is cylindrical and is arranged in the middle of the heat exchange tube.
3. The steam generator of claim 2, wherein the combustion chamber comprises annular side walls, top walls and bottom walls, the outer sides of the side walls, the top walls, the bottom walls and the heat exchange tubes define a combustion chamber, through holes communicated with the heat exchange tubes are respectively formed in the top walls and the bottom walls, two ends of the heat exchange tubes are respectively communicated with the water container, and the top walls and the bottom walls are respectively welded with the annular side walls.
4. The steam generator of claim 3, wherein a gap is left between a top of the annular sidewall and the top wall, and the flue gas shift cavity communicates with a top of the combustion chamber through the gap.
5. The steam generator of claim 4, wherein a top of the annular sidewall is provided with a through hole for the fabric burner to pass through; the fabric burner is characterized by further comprising a sealing plate, wherein the sealing plate is fixed with the fabric burner and covers the through hole.
6. The steam generator of claim 3, wherein the water bladder includes a cavity defined by the second housing and the cover plate, and further comprising a steam outlet for discharging steam, the steam outlet communicating with an upper portion of the water bladder; the flue gas conversion cavity comprises a first shell with an open upper part, the first shell penetrates through the second shell and is communicated with the combustion chamber, and the top wall covers the combustion chamber and the upper part of the first shell.
7. The steam generator of claim 6, wherein a plurality of first smoke exhaust ports are disposed below the first housing, a plurality of second smoke exhaust ports corresponding to the first smoke exhaust ports are disposed on the water inlet preheating chamber, and the water inlet preheating chamber is communicated with the water inlet preheating chamber through the first smoke exhaust ports and the second smoke exhaust ports.
8. The steam generator of claim 6, further comprising a second water bladder, the second water bladder being in communication with the water bladder, the flue gas conversion chamber being disposed within the second water bladder, the inlet water preheating chamber being in communication with the second water bladder.
9. The steam generator of any of claims 1-8, wherein the control box comprises a housing, the gas outlet being disposed on the housing; a control assembly, a pressure detection assembly, a fan, an electromagnetic valve and an air supply pipe are arranged in the box body, the air supply pipe is communicated with the gas outlet, the fan is used for mixing and conveying air and gas to the air supply pipe, and the electromagnetic valve is used for controlling the on-off of the gas; the control assembly is respectively and electrically connected with the pressure detection assembly, the fan and the electromagnetic valve.
10. The steam generator of claim 9, further comprising a liquid level detection assembly for monitoring a water level within the water bladder, the liquid level detection assembly being electrically connected to the control assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085935.6A CN112178606A (en) | 2020-10-12 | 2020-10-12 | Steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085935.6A CN112178606A (en) | 2020-10-12 | 2020-10-12 | Steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112178606A true CN112178606A (en) | 2021-01-05 |
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ID=73951127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085935.6A Pending CN112178606A (en) | 2020-10-12 | 2020-10-12 | Steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112178606A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208205406U (en) * | 2018-08-01 | 2018-12-07 | 北京绿洲德瀚环境保护中心有限责任公司 | A kind of burning energy-saving boiler |
| CN208704160U (en) * | 2018-08-08 | 2019-04-05 | 北京中禾葆蓝环保科技有限公司 | A kind of premixing boiler with the pre- heat function of water |
| CN208735909U (en) * | 2018-08-09 | 2019-04-12 | 北京中禾葆蓝环保科技有限公司 | A kind of premixing boiler using fume afterheat |
| CN210050990U (en) * | 2019-04-18 | 2020-02-11 | 山西中加盛博环能科技有限公司 | Gas boiler |
| CN211011929U (en) * | 2019-11-25 | 2020-07-14 | 江苏韩斯特锅炉有限公司 | Ultralow nitrogen stainless steel full condensation boiler |
-
2020
- 2020-10-12 CN CN202011085935.6A patent/CN112178606A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208205406U (en) * | 2018-08-01 | 2018-12-07 | 北京绿洲德瀚环境保护中心有限责任公司 | A kind of burning energy-saving boiler |
| CN208704160U (en) * | 2018-08-08 | 2019-04-05 | 北京中禾葆蓝环保科技有限公司 | A kind of premixing boiler with the pre- heat function of water |
| CN208735909U (en) * | 2018-08-09 | 2019-04-12 | 北京中禾葆蓝环保科技有限公司 | A kind of premixing boiler using fume afterheat |
| CN210050990U (en) * | 2019-04-18 | 2020-02-11 | 山西中加盛博环能科技有限公司 | Gas boiler |
| CN211011929U (en) * | 2019-11-25 | 2020-07-14 | 江苏韩斯特锅炉有限公司 | Ultralow nitrogen stainless steel full condensation boiler |
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Application publication date: 20210105 |