CN204717651U - There are two drum longitudinal room combustion type boilers of three backhauls - Google Patents
There are two drum longitudinal room combustion type boilers of three backhauls Download PDFInfo
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- CN204717651U CN204717651U CN201420787874.1U CN201420787874U CN204717651U CN 204717651 U CN204717651 U CN 204717651U CN 201420787874 U CN201420787874 U CN 201420787874U CN 204717651 U CN204717651 U CN 204717651U
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- drum
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- combustion type
- membrane wall
- boiler
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Abstract
The utility model provides a kind of two drum longitudinal room combustion type boilers with three backhauls, comprising: the first drum; Second drum; By the tube bank be arranged between the first drum and the second drum; The first membrane wall to limit burner hearth is connected with the first drum and the second drum; Be connected with the first drum and the second drum so that the second membrane wall that burner hearth is separated with tube bank, between the second membrane wall and rear side membrane wall, be formed with first passage; And be connected by restraining the tertiary membrane formula wall separated with external environment, to be formed with second channel between tertiary membrane formula wall and front side membrane wall with the first drum and the second drum; It is characterized in that, two drum longitudinal room combustion type boiler also comprises the Internal Flue be arranged on outside tertiary membrane formula wall, and the flue gas discharge opening of Internal Flue is formed in the rear side of boiler.Simple according to two drum longitudinal room combustion type boiler structures with three backhauls of the present utility model, welding job amount is little, quality easily ensures and be easy to maintenance.
Description
Technical field
The utility model relates to industry and heating boiler, particularly relates to two drum longitudinal room combustion (SZS) type boilers with three backhauls.
Background technology
Two drum longitudinal room combustion type boiler is a kind of using gas or oil as the boiler of fuel, and it can produce steam for all types of industries enterprise, also can produce hot water for central heating.Generally, two drum longitudinal room combustion type boiler is two backhauls, and the flue gas that fuel combustion produces is discharged from the side direction of boiler front portion in boiler after burner hearth and tube bank two strokes.But, for the situation of boiler room limited area, particularly when the existing boiler in boiler room be coal-burning boiler need to carry out coal change gas and change boiler time, for reducing the size in boiler floor space, particularly boiler width direction, usual requirement changes boiler into three backhauls, flue gas is made in boiler, to walk three strokes and discharge on rear side of boiler, to reduce the width dimensions of boiler room.Fig. 1 is existing two drum longitudinal room combustion type boilers schematic cross-sectional views in the width direction with three backhauls, and Fig. 2 is the cross sectional top view of two drum longitudinal room combustion type boiler shown in Fig. 1.This two drum longitudinal room combustion type boilers 1 with three backhauls comprise the first drum 3, second drum 5, by being arranged between the first drum 3 with the second drum 5 and the tube bank 7 formed with multiple pipes that the first drum 3 is communicated with the second drum 5, be connected with the first drum 3 and the second drum 5 and limit the first membrane wall 11 of burner hearth 9, be connected with the first drum 3 and the second drum 5 and the second membrane wall 13 that burner hearth 9 is separated with tube bank 7, be connected with the first drum 3 and the second drum 5 and the tertiary membrane formula wall 15 that tube bank 7 and external environment are separated, be arranged in the middle of tube bank 7 tube bank 7 to be divided into the 4th membrane wall 17 of two parts, front side membrane wall 19 and the rear side membrane wall 21 in enclosed interior space is limited together with tertiary membrane formula wall 15 with the first membrane wall 11, and the burner 23 be arranged on the membrane wall 19 of front side.Second membrane wall 13 be connected hermetically with front side membrane wall 19 but and be formed with first passage 25 between rear side membrane wall 21,4th membrane wall 17 be connected hermetically with rear side membrane wall 21 but and be formed with second channel 27 between front side membrane wall 19, and rear side membrane wall 21 between tertiary membrane formula wall 15 and the 4th membrane wall 17 is formed with flue gas discharge opening 29.When boiler operatiopn, in burner hearth 9, combustion flame is formed after fuel mixes with air in burner 23, the high-temperature flue gas that combustion flame produces carries out heat exchange with the tube bank 7 being positioned at this space by burner hearth 9 in the space that first passage 25 enters between the second membrane wall 13 and the 4th membrane wall 17, then in the space that second channel 27 enters between tertiary membrane formula wall 15 and the 4th membrane wall 17, carry out heat exchange with the tube bank 7 being positioned at this space, discharge on rear side of boiler finally by the flue gas discharge opening 29 on rear side membrane wall 21.
Membrane wall is as a kind of parts of boiler, and welding job amount is large, manufacture process requirement is high.For the membrane wall for rotine positioning, can be welded by automation equipment and enhance productivity and workmanship.But for the 4th membrane wall 17 needing to be arranged in the middle of tube bank 7, then can only manual welding, welding job amount is large, Forming Quality is not easy to ensure, and the whole manufacture process of boiler needs additionally to increase a water pressure test and check the 4th membrane wall 17.In addition, owing to adding the 4th membrane wall in the middle of tube bank 7, whether the more difficult observation when the water pressure test of the pipe in tube bank 7 is leaked, adds workload and the difficulty of inspection.On the other hand, separated by the 4th membrane wall 17 owing to restraining 7, tube bank 7 inside is made more to be difficult to enter, the more difficult maintenance of inside tube, and the 4th membrane wall itself be also difficult to maintenance, once the pipe of the 4th membrane wall leaks, even if adopt the mode process of plugging, the band steel cooling operating mode of pipe both sides of being blocked is poor and easily overheated, makes the deterioration of safety of boiler operatiopn.
Thus, need to improve existing two drum longitudinal room combustion type boilers with three backhauls.
Utility model content
The purpose of this utility model will overcome above-mentioned at least one defect of the prior art exactly, a kind of two drum longitudinal room combustion type boilers with three backhauls of improvement are proposed, this two drum longitudinal room combustion type boilers with three backhauls can not only adapt to the compacter requirement of boiler room limited area, needs boiler structure, and structure is simple, welding job amount is little, quality easily ensures and be easy to maintenance.
For this reason, according to one side of the present utility model, a kind of two drum longitudinal room combustion type boilers with three backhauls are provided, comprise:
First drum;
Second drum;
By being arranged between described first drum with described second drum and the tube bank formed with multiple pipes that described first drum is communicated with described second drum;
Be connected with described first drum and described second drum and be connected the first membrane wall to limit burner hearth with front side membrane wall and rear side membrane wall;
Be connected with described first drum and described second drum and be connected so that the second membrane wall that described burner hearth and described tube bank are separated with described front side membrane wall and described rear side membrane wall, between described second membrane wall and described rear side membrane wall, being formed with first passage; And
Be connected with described first drum and described second drum and be connected so that the tertiary membrane formula wall that described tube bank and external environment are separated with described front side membrane wall and described rear side membrane wall, between described tertiary membrane formula wall and described front side membrane wall, being formed with second channel;
It is characterized in that, described pair of drum longitudinal room combustion type boiler also comprises the Internal Flue be arranged on outside described tertiary membrane formula wall, and the flue gas discharge opening of described Internal Flue is formed in the rear side of boiler.
Preferably, except described tertiary membrane formula wall, other wall of described Internal Flue is directly welded by steel plate and is formed.
Preferably, the described pair of drum longitudinal room combustion type boiler is also included in the position corresponding with described burner hearth and is arranged on burner on the membrane wall of described front side.
Preferably, the outer wall of described Internal Flue is provided with the first access door and is provided with the second access door on described tertiary membrane formula wall.
Preferably, residing for described tube bank, region is provided with at least one access path.
Preferably, the energy-saving appliance connecting flue and be communicated with described flue gas discharge opening is also provided with.
Simple according to two drum longitudinal room combustion type boiler structures with three backhauls of the present utility model, welding job amount is little, quality easily ensures and be easy to maintenance.
Accompanying drawing explanation
Fig. 1 is existing two drum longitudinal room combustion type boilers schematic cross-sectional views in the width direction with three backhauls;
Fig. 2 is the cross sectional top view of two drum longitudinal room combustion type boiler shown in Fig. 1;
Fig. 3 is according to two drum longitudinal room combustion type boilers schematic cross-sectional views in the width direction with three backhauls of the present utility model;
Fig. 4 is the cross sectional top view of two drum longitudinal room combustion type boiler shown in Fig. 3; And
Fig. 5 is the cross sectional top view similar with Fig. 4, and wherein, two drum longitudinal room combustion type boiler is also provided with energy-saving appliance.
Detailed description of the invention
Each preferred embodiment of the present utility model is described in detail below in conjunction with example.It will be understood by those skilled in the art that this embodiment is exemplary, it does not also mean that and forms any restriction to the utility model.
Fig. 3 is according to two drum longitudinal room combustion type boilers schematic cross-sectional views in the width direction with three backhauls of the present utility model, and Fig. 4 is the cross sectional top view of two drum longitudinal room combustion type boiler shown in Fig. 3.As shown in Figures 3 and 4, the first drum 33 is comprised according to two drum longitudinal room combustion type boilers 31 with three backhauls of the present utility model, second drum 35, by being arranged between the first drum 33 with the second drum 35 and the tube bank 37 formed with multiple pipes that the first drum 33 is communicated with the second drum 35, be connected with the first drum 33 and the second drum 35 and limit the first membrane wall 41 of burner hearth 39, be connected with the first drum 33 and the second drum 35 and the second membrane wall 43 that burner hearth 39 is separated with tube bank 37, be connected with the first drum 33 and the second drum 35 and the tertiary membrane formula wall 45 that tube bank 37 and external environment are separated, be arranged on the Internal Flue 47 outside tertiary membrane formula wall 45, front side membrane wall 49 and the rear side membrane wall 51 in enclosed interior space is limited together with tertiary membrane formula wall 45 with the first membrane wall 41, and the burner 53 be arranged on the membrane wall 49 of front side.Second membrane wall 43 be connected hermetically with front side membrane wall 49 but and be formed with first passage 55 between rear side membrane wall 51, tertiary membrane formula wall 45 be connected hermetically with rear side membrane wall 51 but be formed with the second channel 57 be communicated with Internal Flue 47 between front side membrane wall 49, and the flue gas discharge opening 59 of Internal Flue 47 is formed in the rear side of boiler.When boiler operatiopn, in burner hearth 39, combustion flame is formed after fuel mixes with air in burner 53, the high-temperature flue gas that combustion flame produces carries out heat exchange with the tube bank 37 being positioned at this space by burner hearth 39 in the space that first passage 55 enters between the second membrane wall 43 and tertiary membrane formula wall 45, then enter Internal Flue 47 through second channel 57, the flue gas discharge opening 59 finally by rear side is discharged on rear side of boiler.Like this, according to the utility model, burner hearth 39, restrain three backhauls that 37 regions and Internal Flue 47 define flue gas.
For the ease of overhauling boiler internal, the first access door 61 being preferably set on the outer wall of Internal Flue 47 and the second access door 63 is set on tertiary membrane formula wall 45.In addition, a place or a few place can also be had not to arrange pipe in region residing for tube bank 37, to form access path 63.The number of access path 63 is determined according to boiler length.Access door and access path convenient operation personnel enter boiler internal and overhaul tube bank 37.
Fig. 5 is the cross sectional top view similar with Fig. 4, and wherein, two drum longitudinal room combustion type boiler is also provided with energy-saving appliance.Two drum longitudinal room combustion type boiler shown in Fig. 5 has substantially identical structure with drum longitudinal room combustion type boiler two Fig. 4 Suo Shi, except drum longitudinal room combustion type boiler two shown in Fig. 5 also has the connection flue 67 that the flue gas discharge opening 59 on rear side of boiler extends and the energy-saving appliance 69 being arranged on the other end connecting flue 67.Energy-saving appliance 69 can reclaim heat energy further and reduce discharge the temperature of flue gas.
According to two drum longitudinal room combustion type boilers with three backhauls of the present utility model, flue gas has carried out relative heat exchange fully in burner hearth 39 with two backhauls that tube bank 37 region is formed, when flue gas flows through the 3rd backhaul at Internal Flue 47 place, temperature is relatively low, and thus Internal Flue 47 other wall except tertiary membrane formula wall 45 directly can be welded by steel plate and be formed.When Internal Flue 47 is directly welded by steel plate and formed, do not need to carry out the water pressure test.
Owing to not needing to arrange membrane wall in tube bank 37 region according to two drum longitudinal room combustion type boilers with three backhauls of the present utility model, welding job amount significantly reduces, and workmanship more easily ensures; And when there is the situation that pipe leaks, maintenance mode is identical with two pass boiler, without the potential safety hazard such as band steel is overheated.The both sides of tertiary membrane formula wall 45 all participate in heat exchange, add boiler heat exchange area, are conducive to reducing exhaust gas temperature further, improving boiler thermal output.In addition, compared with existing two drum longitudinal room combustion type boilers with three backhauls, according to tube bank 37 region with two drum longitudinal room combustion type boilers of three backhauls of the present utility model only as a backhaul, the row of flue gas parallel baffled pipe does not increase, the flue gas resistance of tube bank 37 does not increase, and clear in Internal Flue 47, flue gas resistance is little, therefore, the flue gas resistance of this boiler entirety obviously reduces, during boiler operatiopn, needed for air blast, power consumption diminishes, and contributes to further energy-conservation.
Below in conjunction with specific embodiments the utility model has been described in detail.Obviously, above description and embodiment illustrated in the accompanying drawings all should be understood to be exemplary, and do not form restriction of the present utility model.To those skilled in the art, can carry out various modification or amendment when not departing from spirit of the present utility model to it, these modification or amendment all do not depart from scope of the present utility model.
Claims (6)
1. there are two drum longitudinal room combustion type boilers for three backhauls, comprising:
First drum (33);
Second drum (35);
By being arranged between described first drum (33) with described second drum (35) and the tube bank (37) formed with multiple pipes that described first drum (33) is communicated with described second drum (35);
Be connected with described first drum (33) and described second drum (35) and be connected the first membrane wall (41) to limit burner hearth (39) with front side membrane wall (49) and rear side membrane wall (51);
Be connected with described first drum (33) and described second drum (35) and be connected with described front side membrane wall (49) and described rear side membrane wall (51) so that the second membrane wall (43) that described burner hearth (39) and described tube bank (37) are separated, between described second membrane wall (43) and described rear side membrane wall (51), be formed with first passage (55); And
Be connected with described first drum (33) and described second drum (35) and be connected with described front side membrane wall (49) and described rear side membrane wall (51) so that the tertiary membrane formula wall (45) that described tube bank (37) and external environment are separated, between described tertiary membrane formula wall (45) and described front side membrane wall (49), be formed with second channel (57);
It is characterized in that, described pair of drum longitudinal room combustion type boiler also comprises the Internal Flue (47) being arranged on described tertiary membrane formula wall (45) outside, and the flue gas discharge opening (59) of described Internal Flue (47) is formed in the rear side of boiler.
2. according to claim 1 pair of drum longitudinal room combustion type boiler, it is characterized in that, except described tertiary membrane formula wall (45), other wall of described Internal Flue (47) is directly welded by steel plate and is formed.
3. according to claim 1 pair of drum longitudinal room combustion type boiler, it is characterized in that, the described pair of drum longitudinal room combustion type boiler is also included in the position corresponding with described burner hearth (39) and is arranged on burner (53) on described front side membrane wall (49).
4. according to claim 1 pair of drum longitudinal room combustion type boiler, it is characterized in that, the outer wall of described Internal Flue (47) is provided with the first access door (61) and is provided with the second access door (63) on described tertiary membrane formula wall (45).
5. according to claim 1 pair of drum longitudinal room combustion type boiler, is characterized in that, the residing region of described tube bank (37) is provided with at least one access path (63).
6. according to claim 1 pair of drum longitudinal room combustion type boiler, is characterized in that, is also provided with the energy-saving appliance (69) connecting flue (67) and be communicated with described flue gas discharge opening (59).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787874.1U CN204717651U (en) | 2014-12-12 | 2014-12-12 | There are two drum longitudinal room combustion type boilers of three backhauls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787874.1U CN204717651U (en) | 2014-12-12 | 2014-12-12 | There are two drum longitudinal room combustion type boilers of three backhauls |
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| Publication Number | Publication Date |
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| CN204717651U true CN204717651U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420787874.1U Expired - Fee Related CN204717651U (en) | 2014-12-12 | 2014-12-12 | There are two drum longitudinal room combustion type boilers of three backhauls |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762836A (en) * | 2019-11-04 | 2020-02-07 | 芜湖市通达锅炉有限公司 | Double-cylinder internal combustion boiler |
| CN112032695A (en) * | 2020-09-23 | 2020-12-04 | 江苏双良锅炉有限公司 | Small-capacity sub-high-pressure water pipe boiler |
-
2014
- 2014-12-12 CN CN201420787874.1U patent/CN204717651U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762836A (en) * | 2019-11-04 | 2020-02-07 | 芜湖市通达锅炉有限公司 | Double-cylinder internal combustion boiler |
| CN112032695A (en) * | 2020-09-23 | 2020-12-04 | 江苏双良锅炉有限公司 | Small-capacity sub-high-pressure water pipe boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20211212 |