CN204757349U - Three return stroke gas boiler of horizontal internal combustion - Google Patents
Three return stroke gas boiler of horizontal internal combustion Download PDFInfo
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- CN204757349U CN204757349U CN201520467197.XU CN201520467197U CN204757349U CN 204757349 U CN204757349 U CN 204757349U CN 201520467197 U CN201520467197 U CN 201520467197U CN 204757349 U CN204757349 U CN 204757349U
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Abstract
The utility model provides a three return stroke gas boiler of horizontal internal combustion, it includes the shell and the room of strile -bacing, is provided with the room front tube sheet that strile -backs in the room of strile -bacing, the one end of fixed two return stroke tobacco pipes on the room front tube sheet that strile -backs, the other end and the preceding smoke box intercommunication of two return stroke tobacco pipes, the mid portion of two return stroke tobacco pipes is arranged in the shell, the left facade that characterized by strile -backs the room front tube sheet is located the shell, the right facade of the room front tube sheet that strile -backs be located strile -back indoor, be provided with high temperature resistant stainless steel grapple on the right facade of room front tube sheet that strile -backs, be provided with the pitch layer on the right facade of the room front tube sheet that strile -backs and high temperature resistant stainless steel grapple, be provided with high temperature plastic refractory layer on the pitch layer, be provided with the kuppe that has a perfect understanding the lower part on the room front tube sheet left side facade that strile -backs, the kuppe cover is in the two return stroke tobacco pipe tip outside, and the kuppe top is provided with the return water mouth, and the return water mouth is through independent passageway and return water tube socket intercommunication. This structure can effectively prevent to strile -back the room front tube sheet and crackle, two return stroke tobacco pipe boosters appear, leak.
Description
Technical field
The utility model relates to pan shell type gas fired-boiler, particularly relates to a kind of horizontal internal combustion three backhaul gas-fired water heating boiler return combustion chamber front tube sheet structure.
Background technology
Urban residents in North heating uses hot-water boiler mostly, living standard is while significantly improving, the requirement of people to environment also improves thereupon, haze increase the weight of and the decline of air quality impels country to support development clean energy resource, horizontal internal combustion three backhaul gas-fired water heating boiler because volume is little, compact conformation, easy to operate, the thermal efficiency is high, clean environment firendly be people's first-selection heating boilers.This boiler adopts natural gas to be fuel, and heating surface is washed away in combustion gas three backhauls in shell, and exhaust gas temperature is below 170 DEG C, and the thermal efficiency is more than 90%.Concrete principle is: as shown in Figure 1, natural gas forms high-temperature flue gas at corrugated internal furnace 3 after burner 1 is lighted, return combustion chamber 6 is entered after corrugated internal furnace and hot water heat exchange, after return combustion chamber turns to 180 degree, enter two return smoke pipe 9 through return combustion chamber front tube sheet 5, after two return smoke pipe and hot water heat exchange, enter front smoke box 2, after front smoke box turns to 180 degree, enter three backhaul smoke pipes 10, smoke box 7 after entering after three backhaul smoke pipes and hot water heat exchange, after connect chimney discharge.Cold water enters shell 4 from backwater base, and cold water evenly circulates in drum, becomes hot water see off with heating surface after participating in heat exchange.But common horizontal internal combustion three backhaul gas-fired water heating boiler return combustion chamber front tube sheet is easy to crack, the easy booster in two return smoke pipe front end, all this kind of situation can not be effectively improved by improvement of production process and weld horizontal, analyze reason be roughly following some: 1, because the water quality of hot-water boiler recirculated water is lower than steam boiler water quality, the mobility of return combustion chamber front tube sheet hot water side water is bad, cause high-temperature flue gas through return combustion chamber front tube sheet, during two return smoke pipe (temperature is about 1000 DEG C), the heat being delivered to this region makes the stove water direct gasification of carrying out heat exchange, fouling, due to enough coolings cannot be obtained, this region forms layer of scale or gasification layer, directly cause return combustion chamber front tube sheet, two return smoke pipe temperature is too high, impact toughness decreased, produce larger temperature stress simultaneously.2, adopt fillet weld seam between return combustion chamber front tube sheet and two return smoke pipe, high-temperature flue gas directly washes away weld seam, and because cooling condition is poor herein, long-time hot-spot, causes toughness of material to decline, easily brittle cracking occurs.3, high-temperature flue gas is when return combustion chamber enters two return smoke pipe, because sectional area changes, at two return flue end, wadding stream easily occurs, impacts larger to smoke pipe.
Summary of the invention
Problem to be solved in the utility model is that horizontal internal combustion three backhaul gas-fired water heating boiler return combustion chamber front tube sheet is easy to crack, the easy booster in two return smoke pipe front end.
The utility model is realized by following technical measures: a kind of horizontal internal combustion three backhaul gas-fired water heating boiler, it comprises shell, the return combustion chamber being arranged at the corrugated internal furnace in shell and being communicated with corrugated internal furnace end, return combustion chamber front tube sheet is provided with in return combustion chamber, return combustion chamber front tube sheet is fixed one end of two return smoke pipe, the other end of two return smoke pipe is communicated with front smoke box, the mid portion of two return smoke pipe is arranged in shell, it is characterized in that the left facade of return combustion chamber front tube sheet is positioned at shell, the right facade of return combustion chamber front tube sheet is positioned at return combustion chamber; The right facade of return combustion chamber front tube sheet is provided with high temperature resistant stainless steel grapple, the right facade and high temperature resistant stainless steel grapple of return combustion chamber front tube sheet is provided with bitumen layer, bitumen layer is provided with the plastic bed of material of high-temperature flame-proof; The left facade of return combustion chamber front tube sheet is provided with the through kuppe in bottom, and kuppe covers on outside two return flue end, and kuppe top is provided with water return outlet, and water return outlet to be communicated with backwater base by autonomous channel to form independently flow-guiding channel in shell.
The concrete feature of this programme also has, and described kuppe comprises top board and gripper shoe, and top board is bent into semicircular arc by rectangle steel plate to weld with return combustion chamber front tube sheet and gripper shoe respectively, and top board is provided with water return outlet.
Described autonomous channel is welded by four block plates, and autonomous channel welded top is on shell, and autonomous channel bottom welding is on kuppe.
Stainless steel sleeve pipe is inserted in two return smoke pipe, stainless steel sleeve pipe one end is concordant with the fire-resistant plastic bed of material, the stainless steel sleeve pipe other end inserts two return smoke pipe 80mm, and high-temperature flue gas steadily enters smoke pipe by return combustion chamber after the wadding that two return smoke pipe produces flows through stainless steel sleeve pipe current stabilization.
The beneficial effect of this programme is: backwater is entered by backwater base and flows through autonomous channel and enter kuppe by water return outlet, form backwater forced circulation and wash away return combustion chamber front tube sheet and two return smoke pipe front portion downwards, cooling backwater directly washes away region easy to crack, comparatively Natural Circulation is high for the flow velocity of water herein, the heat taken away is many, solve that this region heat exchange is bad, water circulation bad cause stove water direct gasification, fouling, thus solve problem of stress concentration, prevent tube sheet cracking.Pitch and the plastic bed of material of the high-temperature flame-proof return combustion chamber front tube sheet surface in return combustion chamber forms thermal insulation layer, the moldable serviceability temperature of high-temperature flame-proof is greater than 1300 DEG C, impact to return combustion chamber front tube sheet when pitch can prevent that high-temperature flame-proof is moldable to expand, high-temperature flame-proof is moldable stays dilatation joint in centre.This structure avoids high-temperature flue gas directly to contact with return combustion chamber front tube sheet, reduces the heat of delivered heat to return combustion chamber front tube sheet, and can prevent high-temperature flue gas from directly washing away the weld seam of return combustion chamber front tube sheet and two return smoke pipe, prevent weld cracking.
Accompanying drawing explanation
Fig. 1 is traditional horizontal internal combustion three pass hot water boiler structural representation; Fig. 2 is the utility model partial enlarged drawing; Fig. 3 is the left view of Fig. 2; Fig. 4 is supporting plate structure schematic diagram; Fig. 5 is top board front view; Fig. 6 is top board top view; Fig. 7 is the A direction view of Fig. 2; Fig. 8 is the right view of Fig. 7.
In figure: 1-burner; 2-front smoke box; 3-corrugated internal furnace; 4-shell; 5-return combustion chamber front tube sheet; 6-return combustion chamber; Smoke box after 7-; 8-return combustion chamber back tube sheet; 9-two return smoke pipe; 10-tri-backhaul smoke pipe; 11-backwater base; 12-autonomous channel; 13-bitumen layer; 14-top board; 15-gripper shoe; 16-stainless steel grapple; The plastic bed of material of 17-high-temperature flame-proof; 18-stainless steel sleeve pipe; 19 water return outlets; 20-dilatation joint.
Detailed description of the invention
As shown in Figure 2, a kind of horizontal internal combustion three backhaul gas-fired water heating boiler, it comprises shell 4, the return combustion chamber 6 being arranged at the corrugated internal furnace 3 in shell 4 and being communicated with corrugated internal furnace 3 end, return combustion chamber front tube sheet 5 is provided with in return combustion chamber 6, return combustion chamber front tube sheet 5 is fixed one end of two return smoke pipe 9, the other end of two return smoke pipe 9 is communicated with front smoke box 2, the mid portion of two return smoke pipe 9 is arranged in shell 4, the left facade of return combustion chamber front tube sheet 5 is positioned at shell 4, and the right facade of return combustion chamber front tube sheet 5 is positioned at return combustion chamber 6; The right facade of return combustion chamber front tube sheet 5 is provided with high temperature resistant stainless steel grapple 16, the right facade and high temperature resistant stainless steel grapple 16 of return combustion chamber front tube sheet 5 are provided with bitumen layer 13, bitumen layer 13 is provided with the plastic bed of material 17 of high-temperature flame-proof; The left facade of return combustion chamber front tube sheet 5 is provided with the through kuppe in bottom, kuppe covers on outside two return smoke pipe 9 end, kuppe top is provided with water return outlet 19, and water return outlet 19 to be communicated with backwater base 11 by autonomous channel 12 to form independently flow-guiding channel in shell.Described kuppe comprises top board 14 and gripper shoe 15, and top board 14 is bent into semicircular arc by rectangle steel plate to weld with return combustion chamber front tube sheet 5 and gripper shoe 15 respectively, and top board 14 is provided with water return outlet 19.
As shown in Figure 3, described autonomous channel 12 is welded by four block plates, and autonomous channel 12 welded top is on shell 4, and autonomous channel 12 bottom welding is on kuppe.
Stainless steel sleeve pipe 18 is inserted in two return smoke pipe 9, stainless steel sleeve pipe 18 one end is concordant with the high-temperature flame-proof plastic bed of material 17, stainless steel sleeve pipe 18 other end inserts two return smoke pipe 80mm, and high-temperature flue gas steadily enters two return smoke pipe 9 by return combustion chamber 6 after the wadding that two return smoke pipe 9 produces flows through stainless steel sleeve pipe 18 current stabilization.
As shown in Figure 1, boiler level longitudinally arranges a large-diameter circular tubular shell 4, and the circular Plate Welding in shell 4 two ends forms the shell 4 of sealing.Shell 4 front portion arranges cylindric front smoke box 2, and front smoke box 2 is concentric horizontally disposed with shell 4, and the circular Plate Welding in front smoke box 2 front portion forms the housing of sealing, and front smoke box 2 rear portion is connected with shell front portion, and the flue gas that front smoke box 2 inside forms sealing turns to space.Shell 4 rear portion arranges cylindric rear smoke box 7, and rear smoke box 7 is concentric horizontally disposed with shell 4, and rear smoke box 4 front portion is connected with shell 4 rear portion, and the circular Plate Welding in rear smoke box 4 rear portion forms the housing of sealing.Shell 4 inside arranges corrugated internal furnace 3, and corrugated internal furnace 3 is cylindric in general horizontal, corrugated internal furnace 3 axis and shell 4 axis being parallel, but be offset to shell 4 bottom, its cylindrical shell is compressed to wavy, the inner space forming combustion of natural gas, and boiler smoke flows from front to back in corrugated internal furnace 3; Corrugated internal furnace 3 front portion is connected with burner 1, and corrugated internal furnace 3 rear portion is connected with return combustion chamber front tube sheet 5.
Corrugated internal furnace 3 arranges return combustion chamber 6 below, return combustion chamber 6 is horizontal circle tubular, return combustion chamber 6 axis and shell 4 axis being parallel, but be offset to shell 4 bottom, its cylindrical shell is that steel plate bends and forms, the welding of two ends return combustion chamber front tube sheet 5, return combustion chamber back tube sheet 8 forms the housing of sealing, reserved corrugated internal furnace 3, two return smoke pipe 9 installing hole on return combustion chamber front tube sheet 5, and corrugated internal furnace 3 inside forms boiler smoke and turns to space; Return combustion chamber front tube sheet 5 is connected with corrugated internal furnace 3, two return smoke pipe 9.Shell 4 inside arranges many two return smoke pipes 9, and two return smoke pipe 9 is horizontal steel tube, two return smoke pipe 9 axis and shell 4 axis being parallel, and boiler smoke flows from back to front in two return smoke pipe 9; Two return smoke pipe 9 for basic point is radially arranged between shell 4 and corrugated internal furnace 3, and is positioned at the space near corrugated internal furnace 3 with shell 4 center.It is horizontal steel tube that level longitudinal major diameter shell inside arranges many three backhaul smoke pipe 10, three backhaul smoke pipes 10, three backhaul smoke pipe 10 axis and shell axis being parallel, and boiler smoke flows from front to back in three backhaul smoke pipes 10; Three backhaul smoke pipes 10 for basic point is radially arranged between shell 4 and corrugated internal furnace 3, and are positioned at the space near shell 4 with shell center.
Claims (4)
1. a horizontal internal combustion three backhaul gas-fired water heating boiler, it comprises shell, the return combustion chamber being arranged at the corrugated internal furnace in shell and being communicated with corrugated internal furnace end, return combustion chamber front tube sheet is provided with in return combustion chamber, return combustion chamber front tube sheet is fixed one end of two return smoke pipe, the other end of two return smoke pipe is communicated with front smoke box, and the mid portion of two return smoke pipe is arranged in shell, it is characterized in that the left facade of return combustion chamber front tube sheet is positioned at shell, the right facade of return combustion chamber front tube sheet is positioned at return combustion chamber; The right facade of return combustion chamber front tube sheet is provided with high temperature resistant stainless steel grapple, the right facade and high temperature resistant stainless steel grapple of return combustion chamber front tube sheet is provided with bitumen layer, bitumen layer is provided with the plastic bed of material of high-temperature flame-proof; The left facade of return combustion chamber front tube sheet is provided with the through kuppe in bottom, and kuppe covers on outside two return flue end, and kuppe top is provided with water return outlet, and water return outlet to be communicated with backwater base by autonomous channel to form independently flow-guiding channel in shell.
2. horizontal internal combustion three backhaul gas-fired water heating boiler according to claim 1, it is characterized in that described kuppe comprises top board and gripper shoe, top board is bent into semicircular arc by rectangle steel plate to weld with return combustion chamber front tube sheet and gripper shoe respectively, and top board is provided with water return outlet.
3. horizontal internal combustion three backhaul gas-fired water heating boiler according to claim 1, it is characterized in that described autonomous channel is welded by four block plates, autonomous channel welded top is on shell, and autonomous channel bottom welding is on kuppe.
4. horizontal internal combustion three backhaul gas-fired water heating boiler according to claim 1, it is characterized in that inserting stainless steel sleeve pipe in two return smoke pipe, stainless steel sleeve pipe one end is concordant with the fire-resistant plastic bed of material, and the stainless steel sleeve pipe other end inserts two return smoke pipe 80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467197.XU CN204757349U (en) | 2015-07-02 | 2015-07-02 | Three return stroke gas boiler of horizontal internal combustion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520467197.XU CN204757349U (en) | 2015-07-02 | 2015-07-02 | Three return stroke gas boiler of horizontal internal combustion |
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| CN204757349U true CN204757349U (en) | 2015-11-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091367A (en) * | 2016-07-26 | 2016-11-09 | 柳州市德缘科技开发有限责任公司 | Split type biomass-fuel gasifying combustion hot water supply system and the method being used for providing hot water thereof |
| CN107676967A (en) * | 2017-11-21 | 2018-02-09 | 河南省锅炉压力容器安全检测研究院 | Energy saving and environment friendly fuel oil fires natural gas boiler |
-
2015
- 2015-07-02 CN CN201520467197.XU patent/CN204757349U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091367A (en) * | 2016-07-26 | 2016-11-09 | 柳州市德缘科技开发有限责任公司 | Split type biomass-fuel gasifying combustion hot water supply system and the method being used for providing hot water thereof |
| CN107676967A (en) * | 2017-11-21 | 2018-02-09 | 河南省锅炉压力容器安全检测研究院 | Energy saving and environment friendly fuel oil fires natural gas boiler |
| CN107676967B (en) * | 2017-11-21 | 2023-09-29 | 河南省锅炉压力容器安全检测研究院 | Energy-saving environment-friendly oil-and-natural gas-fired boiler |
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