CN105240824A - Single-tube-replaceable low-temperature economizer with high sealing performance - Google Patents
Single-tube-replaceable low-temperature economizer with high sealing performance Download PDFInfo
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- CN105240824A CN105240824A CN201510754490.9A CN201510754490A CN105240824A CN 105240824 A CN105240824 A CN 105240824A CN 201510754490 A CN201510754490 A CN 201510754490A CN 105240824 A CN105240824 A CN 105240824A
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- 238000007789 sealing Methods 0.000 title abstract description 4
- 230000001413 cellular effect Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 55
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a single-tube-replaceable low-temperature economizer with a high sealing performance. The single-tube-replaceable low-temperature economizer comprises a shell and U-shaped heat exchange tubes, wherein a plurality of mounting holes matched with the U-shaped heat exchange tubes are formed in the shell, the straight tube part of each U-shaped heat exchange tube is inserted into the mounting hole, and the end part of the straight tube part of each U-shaped heat exchange tube extends out from the mounting hole in the other side of the shell; the U-shaped heat exchange tubes are orderly arranged, and an upper heat exchange tube row and a lower heat exchange tube row are formed on the straight tube part of each U-shaped heat exchange tube; an upper collecting box is arranged at the upper end of the side part of the shell, and a lower collecting box is arranged at the lower end of the side part of the shell; the upper collecting box is connected with the upper heat exchange tube rows, and the lower collecting box is connected with the lower heat exchange tube rows. A casing pipe comprises a horizontal tube and two internal threaded tubes, and the horizontal tube is sleeved with the two internal threaded tubes. Two positioning rings are arranged on the horizontal tube, and a limiting ring matched with the positioning ring is arranged at one end of each internal threaded tube. A connecting tube connected with the casing tube and the U-shaped heat exchange tubes are provided with external threads matched with the internal threaded tubes. The single heat exchange tube can be replaced through the casing pipe, and the casing pipe has the high sealing performance.
Description
Technical field
The present invention relates to economizer, particularly a kind of low-level (stack-gas) economizer that can reduce all kinds of discharge smoke temperature of power station boiler, belong to boiler afterheat and reclaim energy-saving field.
Background technology
Along with the raising of people's living standard, also increasing to the demand of electric power, therefore a lot of power plants generating electricity equipment is also in continuous improvement.Because the increase-volume of generating set is reconstructed, the exhaust gas temperature of a lot of power plant all can raise, and departs from original design value, and raised temperature reaches 20 ~ 500 degree, and the cycle efficieny that so not only have impact on boiler efficiency and power plant also add coal-fired use amount.In order to solve the problem that flue-gas temperature raises, a lot of power plant arranges economizer in flue, utilize economizer by flue gas cool-down, but traditional economizer in use there will be seriously corroded, the problem that service life is short, and traditional economizer also exists heat exchange efficiency is low, the easy fouling of heat-exchanging tube bundle, equipment manufacturing cost and maintenance cost are high shortcoming.
The low-level (stack-gas) economizer of traditional structure in addition, damages once appearance and just needs overall pulling down, repair or replace.Be extremely trouble, and the cost of each maintain and replace is very high.
Summary of the invention
Problem to be solved by this invention is, for above-mentioned shortcoming of the prior art, proposes improvement project or alternative, the replaceable low-level (stack-gas) economizer of especially a kind of high leakproofness single tube.
For solving the problem, the scheme that the present invention adopts is as follows: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing, it is characterized in that, also comprise U-shaped heat exchanger tube; Described housing is provided with multiple installing hole mated with U-shaped heat exchanger tube, and the straight sections of described U-shaped heat exchanger tube is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube is stretched out from the installing hole of housing opposite side; Described U-shaped heat exchanger tube proper alignment, and the straight sections of U-shaped heat exchanger tube forms heat exchanger tube row and lower heat exchanger tube row; The sidepiece upper end of described housing is provided with upper collecting chamber; The sidepiece lower end of described housing is provided with lower header; Described upper collecting chamber is connected with the delivery port of low-level (stack-gas) economizer; Described lower header is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber and lower header are equipped with multiple tube connector; The tube connector of described upper collecting chamber to be arranged with upper heat exchanger tube by sleeve pipe and is connected; The tube connector of described lower header to be arranged with lower heat exchanger tube by sleeve pipe and is connected; Described sleeve pipe comprises transverse tube and two riffled tubes; Described two riffled tubes are set on transverse tube; Described transverse tube is provided with two locating rings; Described riffled tube one end is provided with the spacing ring mated with locating ring; The described tube connector that is connected with sleeve pipe and U-shaped heat exchanger tube are provided with the external screw thread mated with riffled tube.
Low-level (stack-gas) economizer of the present invention, heat pipe is designed to the U-shaped heat pipe of multiple single-piece, be then connected with upper collecting chamber and lower header by sleeve pipe, sleeve pipe is attached thereto by screw thread.Because U-shaped heat pipe is that the independence that can remove separately exists, even if therefore occur that heat pipe damages, also can the U-shaped heat pipe damaged be changed, and do not need integral replacing or maintenance, when changing the U-shaped heat pipe of single damage, after only needing the single tube damaged to remove, reinstall an intact single U-shaped heat pipe.The sleeve pipe be threaded allows replacing more convenient and quicker.The maintenance of low-level (stack-gas) economizer is made to become simple and convenient.And reduce production cost further.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, the tube connector on described upper collecting chamber or lower header equal in number in the quantity of U-shaped heat exchanger tube
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, described U-shaped heat exchanger tube is the pipe that 20G steel processes.
The pipe heat absorption efficiency that 20G steel are made is higher, and 20G steel wearability is stronger.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, described U-shaped heat exchanger tube is for form the thickness of straight sections of lower heat exchanger tube row be U-shaped heat exchanger tube for forming 1.5 times of the thickness of the straight sections of upper heat exchanger tube row.
The thickness being used for U-shaped heat exchanger tube forming the straight sections of lower heat exchanger tube row 1.5 times of being designed to that U-shaped heat exchanger tube is used for the thickness of the straight sections forming upper heat exchanger tube row, because flue gas moves from lower to upper part, granule impact suffered by lower heat exchanger tube row is larger, wear and tear more serious, therefore the thickness that lower heat exchanger tube is arranged is designed to 1.5 times of upper heat exchanger tube row, be used for increasing service life of low-level (stack-gas) economizer.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, described transverse tube two ends are smooth facing directly, and described tube connector and U-shaped heat exchanger tube are provided with match smooth and face directly.
Being designed to smooth facing directly, making it when connecting by screw threads for fastening, can fit tightly, increase sealing.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, the straight sections of described U-shaped heat exchanger tube is provided with fin; Described fin adopts ratio-frequency welding fin to be made.
The straight sections of U-shaped heat exchanger tube is designed to finned tube, significantly can expands heat exchange area, thus the heat transfer area of low-level (stack-gas) economizer is increased, volume greatly reduces, compact conformation, decreases the quantity of pressurized elbow, weld seam quantity, thus the probability reducing leakage.Owing to forming boundary-layer when flue gas flows through finned tube, produce vortex, the chance that fly ash granule strikes tube wall seldom therefore not easily fouling.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, described low-level (stack-gas) economizer front end is provided with an air deflector; Described air deflector comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channel composition air deflector.
On the basis of above-mentioned design, an air deflector is set up in the front end of low-level (stack-gas) economizer, the flow direction of the flue gas entering low-level (stack-gas) economizer can be changed, mixed and disorderly flue gas is originally made to become steady, also make particle in flue gas through air deflector simultaneously, underspeed, the impulsive force made it when colliding thereafter the heat pipe of low-level (stack-gas) economizer diminishes.
Further, the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to above-mentioned design, the sectional area of described single cellular flow-guiding channel is 550-1500cm
2.
Cellular flow-guiding channel structure is more stable, the air deflector be made up of cellular flow-guiding channel is arranged on the front end of low-level (stack-gas) economizer, the heat pipe that can prevent flue gas from directly washing away low-level (stack-gas) economizer causes equipment attrition to aggravate, play water conservancy diversion flue gas flow direction, be uniformly distributed flue gas flow rate, prevent low-level (stack-gas) economizer concentrated wear.Greatly can improve the heat exchanger time limit in service life.
Technique effect of the present invention is as follows: low-level (stack-gas) economizer of the present invention, and heat pipe is designed to the U-shaped heat pipe of multiple single-piece, be then connected with upper collecting chamber and lower header by sleeve pipe, sleeve pipe is attached thereto by screw thread.Because U-shaped heat pipe is that the independence that can remove separately exists, even if therefore occur that heat pipe damages, also can the U-shaped heat pipe damaged be changed, and do not need integral replacing or maintenance, when changing the U-shaped heat pipe of single damage, after only needing the single tube damaged to remove, reinstall an intact single U-shaped heat pipe.The sleeve pipe be threaded allows replacing more convenient and quicker.The maintenance of low-level (stack-gas) economizer is made to become simple and convenient.And reduce production cost further.
Accompanying drawing explanation
Fig. 1 is the replaceable low-level (stack-gas) economizer perspective view of high leakproofness single tube.
Fig. 2 is sleeve structure schematic diagram.
Fig. 3 is upper collecting chamber and lower header structural representation.
Fig. 4 is casing profile structural representation.
Fig. 5 is U-shaped heat exchange tube structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
Embodiment 1: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82.
Embodiment 2: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, the tube connector 7 on described upper collecting chamber 5 or lower header 6 equal in number in the quantity of U-shaped heat exchanger tube 2.
Embodiment 3: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, the pipe that described U-shaped heat exchanger tube 2 processes for 20G steel.
Embodiment 4: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, and described U-shaped heat exchanger tube 2 is for form the thickness of the straight sections of lower heat exchanger tube row 4 are U-shaped heat exchanger tubes 2 for forming 1.5 times of the thickness of the straight sections of upper heat exchanger tube row 3.
Embodiment 5: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, and described transverse tube 8 two ends are set to smoothly faces 86 directly, and described tube connector 7 and U-shaped heat exchanger tube 2 are provided with match smooth and face 86 directly.
Embodiment 6: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, and the straight sections of described U-shaped heat exchanger tube 2 is provided with fin; Described fin adopts ratio-frequency welding fin to be made.
Embodiment 7: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, and described low-level (stack-gas) economizer front end is provided with an air deflector; Described air deflector comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channel composition air deflector.
Embodiment 8: the replaceable low-level (stack-gas) economizer of a kind of high leakproofness single tube, comprises housing 1, U-shaped heat exchanger tube 2; Described housing 1 is provided with multiple installing hole mated with U-shaped heat exchanger tube 2, and the straight sections of described U-shaped heat exchanger tube 2 is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube 2 is stretched out from the installing hole of housing 1 opposite side; Described U-shaped heat exchanger tube 2 proper alignment, and the straight sections of U-shaped heat exchanger tube 2 forms heat exchanger tube row 3 and lower heat exchanger tube row 4; The sidepiece upper end of described housing 1 is provided with upper collecting chamber 5; The sidepiece lower end of described housing 1 is provided with lower header 6; Described upper collecting chamber 5 is connected with the delivery port of low-level (stack-gas) economizer; Described lower header 6 is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber 5 and lower header 6 are equipped with multiple tube connector 7; The tube connector 7 of described upper collecting chamber 5 is arranged 3 by sleeve pipe 8 with upper heat exchanger tube and is connected; The tube connector 7 of described lower header 6 is arranged 4 by sleeve pipe 8 with lower heat exchanger tube and is connected; Described sleeve pipe 8 comprises transverse tube 81 and two riffled tubes 82; Described two riffled tubes 82 are set on transverse tube 81; Described transverse tube 81 is provided with two locating rings 83; Described riffled tube 82 one end is provided with the spacing ring 84 mated with locating ring 83; The described tube connector 7 that is connected with sleeve pipe 8 and U-shaped heat exchanger tube 2 are provided with the external screw thread 85 mated with riffled tube 82, and described low-level (stack-gas) economizer front end is provided with an air deflector; Described air deflector comprises multiple cellular flow-guiding channel, and multiple cellular flow-guiding channel composition air deflector, the sectional area of described single cellular flow-guiding channel is 550-1500cm
2.
Claims (8)
1. the replaceable low-level (stack-gas) economizer of high leakproofness single tube, comprises housing (1), it is characterized in that, also comprises U-shaped heat exchanger tube (2); Described housing (1) is provided with multiple installing hole mated with U-shaped heat exchanger tube (2), and the straight sections of described U-shaped heat exchanger tube (2) is inserted in installing hole, and the end of the straight sections of U-shaped heat exchanger tube (2) is stretched out from the installing hole of housing (1) opposite side; Described U-shaped heat exchanger tube (2) proper alignment, and the straight sections of U-shaped heat exchanger tube (2) forms heat exchanger tube row (3) and lower heat exchanger tube row (4); The sidepiece upper end of described housing (1) is provided with upper collecting chamber (5); The sidepiece lower end of described housing (1) is provided with lower header (6); Described upper collecting chamber (5) is connected with the delivery port of low-level (stack-gas) economizer; Described lower header (6) is connected with the water inlet of low-level (stack-gas) economizer; Described upper collecting chamber (5) and lower header (6) are equipped with multiple tube connector (7); The tube connector (7) of described upper collecting chamber (5) is arranged (3) by sleeve pipe (8) with upper heat exchanger tube and is connected; The tube connector (7) of described lower header (6) is arranged (4) by sleeve pipe (8) with lower heat exchanger tube and is connected; Described sleeve pipe (8) comprises transverse tube (81) and two riffled tubes (82); Described two riffled tubes (82) are set on transverse tube (81); Described transverse tube (81) is provided with two locating rings (83); Described riffled tube (82) one end is provided with the spacing ring (84) mated with locating ring (83); The described tube connector (7) that is connected with sleeve pipe (8) and U-shaped heat exchanger tube (2) are provided with the external screw thread (85) mated with riffled tube (82).
2. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, is characterized in that, the tube connector (7) on described upper collecting chamber (5) or lower header (6) equal in number in the quantity of U-shaped heat exchanger tube (2).
3. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, is characterized in that, the pipe that described U-shaped heat exchanger tube (2) processes for 20G steel.
4. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, it is characterized in that, described U-shaped heat exchanger tube (2) is that U-shaped heat exchanger tube (2) is for forming 1.5 times that the thickness of the straight sections of (3) arranged by upper heat exchanger tube for forming the thickness of the straight sections of lower heat exchanger tube row (4).
5. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, it is characterized in that, described transverse tube (8) two ends are set to smooth facing directly (86), and described tube connector (7) and U-shaped heat exchanger tube (2) are provided with match smooth and face directly (86).
6. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, it is characterized in that, the straight sections of described U-shaped heat exchanger tube (2) is provided with fin; Described fin adopts ratio-frequency welding fin to be made.
7. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 1, it is characterized in that, described low-level (stack-gas) economizer front end is provided with an air deflector; Described air deflector comprises multiple cellular flow-guiding channel, multiple cellular flow-guiding channel composition air deflector.
8. the replaceable low-level (stack-gas) economizer of high leakproofness single tube according to claim 7, it is characterized in that, the sectional area of described single cellular flow-guiding channel is 550-1500cm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510754490.9A CN105240824B (en) | 2015-11-09 | 2015-11-09 | A kind of replaceable low-level (stack-gas) economizer of high leakproofness single tube |
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| CN201510754490.9A CN105240824B (en) | 2015-11-09 | 2015-11-09 | A kind of replaceable low-level (stack-gas) economizer of high leakproofness single tube |
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| CN105240824A true CN105240824A (en) | 2016-01-13 |
| CN105240824B CN105240824B (en) | 2017-07-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109708095A (en) * | 2019-02-27 | 2019-05-03 | 西安热工研究院有限公司 | A kind of easy disassembly formula low-level (stack-gas) economizer system |
| CN109708095B (en) * | 2019-02-27 | 2024-01-30 | 西安热工研究院有限公司 | Make things convenient for dismouting formula low temperature economizer system |
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| CN105240824B (en) | 2017-07-28 |
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Denomination of invention: A high sealing single tube replaceable low temperature economizer Effective date of registration: 20211124 Granted publication date: 20170728 Pledgee: Bank of Suzhou Co.,Ltd. Yancheng branch Pledgor: JIANGSU ZDEE ENVIRONMENTAL ENGINEERING Co.,Ltd. Registration number: Y2021320010500 |
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