High efficiency low temperature waste heat multi-layer cross heat exchanger

Abstract

This utility model discloses a high-efficiency, low-temperature waste heat multilayer cross heat exchanger, including a shell. An upper header is fixedly connected to the shell, and a first connecting pipe is fixedly connected inside the upper header. A cross heat exchange tube is conductively fixed to the first connecting pipe, and a serpentine heat exchange tube is conductively connected to the input end of the cross heat exchange tube. A bracket is fixedly connected to the serpentine heat exchange tube and is fixedly connected to the shell. A lower header is provided at the bottom of the upper header and is fixedly connected to the shell. A second connecting pipe is fixedly connected inside the lower header, and the input end of the serpentine heat exchange tube is conductively fixed to the second connecting pipe. This utility model uses serpentine heat exchange tubes and cross heat exchange tubes working together, effectively increasing the heat exchange area and thus improving the heat exchange efficiency. This utility model adds a filter component at the flue gas inlet, which can effectively filter out dust particles in the flue gas, thereby avoiding a decrease in heat exchange efficiency due to dust particles adhering to the surface of the heat exchange tubes.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat utilization, in particular to a high-efficiency low-temperature waste heat multi-layer cross-type heat exchanger. Background Art

[0002] In the fields of chemical smelting, building materials and other waste treatment, waste heat recovery devices are used to recover and utilize waste heat after waste gas treatment. However, the existing waste heat recovery devices have the following defects: First, the heat exchange efficiency is low, resulting in a small amount of flue gas treated, which can no longer meet the demand; second, the flue gas contains dust particles. After a long period of use, a large amount of dust particles are easily attached to the surface of the heat exchanger, which leads to a decrease in heat exchange efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide a high-efficiency low-temperature waste heat multi-layer cross-type heat exchanger to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-efficiency, low-temperature waste heat multi-layer cross heat exchanger, comprising an outer shell, an upper header is fixedly connected to the outer shell, a first connecting pipe is fixedly connected to the upper header, a cross heat exchange tube is conductively fixed to the first connecting pipe, a serpentine heat exchange tube is conductively connected to the input end of the cross heat exchange tube, a bracket is fixedly connected to the serpentine heat exchange tube, and the bracket is fixedly connected to the outer shell, a lower header is provided at the bottom end of the upper header, and the lower header is fixedly connected to the outer shell, a second connecting pipe is fixedly connected to the lower header, and the input end of the serpentine heat exchange tube is conductively fixed to the second connecting pipe.

[0005] Preferably, a water outlet joint is fixed on the upper surface of the first connecting pipe, and a water inlet joint is fixed on the upper surface of the second connecting pipe.

[0006] Preferably, a sewage discharge joint is fixedly connected to the lower surface of the first connecting pipe and the second connecting pipe, and an instrument joint is fixedly connected to the lower surface of the first connecting pipe.

[0007] Preferably, a smoke outlet is provided on an outer wall of one side of the shell, and a smoke inlet is provided on the lower surface of the shell.

[0008] Preferably, a manhole is provided on the upper surface of the shell, a cover plate is installed on the manhole, hanging parts are provided on both sides of the cover plate, and the hanging parts are fixedly connected to the shell.

[0009] Preferably, a filter assembly is provided at a position corresponding to the smoke inlet in the shell, the filter assembly includes a smoke inlet pipe, a first through groove, a shell, a through hole, a smoke exhaust pipe, a sleeve, a second through groove, a bottom plate, an ash collecting groove, a guide plate, an ash discharge port and a sealing plug, and the shell is fixedly connected to the shell, the smoke inlet pipe is fixedly connected to the shell, a plurality of first through grooves are evenly distributed on the outer wall of the smoke inlet pipe, a plurality of through holes are evenly distributed on the upper surface of the shell, the smoke exhaust pipe is fixedly connected at the position corresponding to the through holes in the shell, a sleeve is connected to the outer sleeve of the smoke exhaust pipe, and the sleeve is fixedly connected to the shell, a second through groove is opened on the outer wall of one side of the sleeve at the position corresponding to the smoke exhaust pipe, and the second through groove is arranged along the tangent direction of the smoke exhaust pipe, the bottom plate is fixedly connected to the lower surface of the shell, and an ash collecting groove is opened on the bottom plate at the position corresponding to the sleeve.

[0010] Preferably, a material guide plate is fixedly connected to the lower surface of the bottom plate, and a plurality of ash discharge ports are evenly distributed on the outer wall of the shell at positions corresponding to the material guide plate, and sealing plugs are arranged in the ash discharge ports.

[0011] The high-efficiency, low-temperature waste heat multi-layer cross-type heat exchanger provided by the utility model has the following advantages: the utility model adopts serpentine heat exchange tubes and cross heat exchange tubes to work together, which effectively increases the heat exchange area, thereby improving the heat exchange efficiency; the utility model adds a filter component at the smoke inlet, which can effectively filter out dust particles in the smoke, thereby avoiding the heat exchange efficiency being reduced due to dust particles adhering to the surface of the heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall main cutaway structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall side cutaway structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the front cutaway structure of the filter assembly of the present utility model.

[0016] In the figure: 1. shell; 11. smoke outlet; 12. smoke inlet; 13. manhole; 14. cover plate; 15. lifting parts; 16. upper header; 17. first connecting pipe; 18. instrument joint; 19. water outlet joint; 110. lower header; 111. second connecting pipe; 112. water inlet joint; 113. sewage joint; 114. cross heat exchange tube; 115. bracket; 116. serpentine heat exchange tube; 2. filter assembly; 21. smoke inlet pipe; 22. first through groove; 23. shell; 24. through hole; 25. smoke exhaust pipe; 26. sleeve; 27. second through groove; 28. bottom plate; 29. ​​ash collecting trough; 210. guide plate; 211. ash outlet; 212. sealing plug. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3The utility model provides an embodiment: a high-efficiency low-temperature waste heat multi-layer cross heat exchanger, comprising a shell 1, an upper header 16 is fixedly connected to the shell 1, a first connecting pipe 17 is fixedly connected to the upper header 16, a cross heat exchange tube 114 is conductively fixed to the first connecting pipe 17, a serpentine heat exchange tube 116 is conductively connected to the input end of the cross heat exchange tube 114, a bracket 115 is fixedly connected to the serpentine heat exchange tube 116, and the bracket 115 is fixedly connected to the shell 1, and a lower bracket 115 is provided at the bottom end of the upper header 16. The header 110 is fixedly connected to the housing 1, the lower header 110 is fixedly connected to the second connecting pipe 111, and the input end of the serpentine heat exchange tube 116 is connected and fixed to the second connecting pipe 111. The upper header 16 is used to install the first connecting pipe 17, the lower header 110 is used to install the second connecting pipe 111, and the bracket 115 is used to install the serpentine heat exchange tube 116. The cross heat exchange tube 114 and the serpentine heat exchange tube 116 perform heat exchange together, so that the heat exchange area is larger and the heat exchange is improved. Efficiency; the upper surface of the first connecting pipe 17 is connected and fixed with a water outlet joint 19, the upper surface of the second connecting pipe 111 is connected and fixed with a water inlet joint 112, the water outlet joint 19 is used to connect the water outlet pipe, and the water inlet joint 112 is used to connect the water inlet pipe; the lower surfaces of the first connecting pipe 17 and the second connecting pipe 111 are connected and fixed with a sewage discharge joint 113, the lower surface of the first connecting pipe 17 is connected and fixed with an instrument joint 18, the sewage discharge joint 113 is used for sewage discharge, and the instrument joint 18 is used to install the instrument; the outer wall of one side of the housing 1 A smoke outlet 11 is arranged on the upper surface, and a smoke inlet 12 is arranged on the lower surface of the shell 1. The smoke outlet 11 is used to discharge the smoke after heat exchange, and the smoke inlet 12 is used to input the residual heat smoke; a manhole 13 is arranged on the upper surface of the shell 1, and a cover plate 14 is installed on the manhole 13. Both sides of the cover plate 14 are provided with hanging parts 15, and the hanging parts 15 are fixedly connected to the shell 1. The manhole 13 is used to facilitate observation and maintenance of the equipment, the cover plate 14 is used to close the manhole 13, and the hanging parts 15 are used to connect the hanging equipment to move the device;A filter assembly 2 is provided at a position corresponding to the smoke inlet 12 in the shell 1, and the filter assembly 2 includes a smoke inlet pipe 21, a first through groove 22, a shell 23, a through hole 24, a smoke exhaust pipe 25, a sleeve 26, a second through groove 27, a bottom plate 28, an ash collecting groove 29, a guide plate 210, an ash exhaust port 211 and a sealing plug 212, and the shell 23 is fixedly connected to the shell 1, and the smoke inlet pipe 21 is fixedly connected to the shell 23, and a plurality of first through grooves 22 are evenly distributed on the outer wall of the smoke inlet pipe 21, and a plurality of through holes 24 are evenly distributed on the upper surface of the shell 23, and a smoke exhaust pipe 25 is fixedly connected to the position corresponding to the through hole 24 in the shell 23, and a sleeve 26 is connected to the outer shell of the smoke exhaust pipe 25, and the sleeve 26 is fixedly connected to the shell 23, and a second through groove 27 is provided on one side of the outer wall of the sleeve 26 at the position corresponding to the smoke exhaust pipe 25, and The second through slot 27 is arranged along the tangent direction of the smoke exhaust pipe 25. The lower surface of the shell 23 is fixedly connected with a bottom plate 28. A dust collecting groove 29 is provided on the bottom plate 28 at a position corresponding to the sleeve 26. The smoke enters the shell 23 through the first through slot 22 on the smoke inlet pipe 21, and enters the sleeve 26 along the tangent direction of the smoke exhaust pipe 25 through the second through slot 27. Under the action of centrifugal force, dust particles are separated from the airflow. The dust collecting groove 29 is used to collect dust particles. The lower surface of the bottom plate 28 is fixedly connected with a guide plate 210. A plurality of ash discharge ports 211 are evenly distributed on the outer wall of the shell 1 at positions corresponding to the guide plate 210. A sealing plug 212 is provided in the ash discharge port 211. The guide plate 210 is used to guide dust particles into the ash discharge port 211. The ash discharge port 211 is used to discharge dust particles. The sealing plug 212 is used to seal the ash discharge port 211. ;

[0019] Working principle: When the utility model is used for waste heat utilization, water is passed into the second connecting pipe 111 through the water inlet joint 112, and then flows into the first connecting pipe 17 through the serpentine heat exchange pipe 116 and the cross heat exchange pipe 114, and is discharged from the water outlet joint 19. The waste heat flue gas is passed into the shell 1 through the smoke inlet 12, and enters the filter component 2 for filtration. The filtered flue gas exchanges heat with the serpentine heat exchange pipe 116 and the cross heat exchange pipe 114, and is then discharged from the smoke outlet 11; the working principle of the filter component 2 is as follows: the flue gas enters the shell 23 through the first through groove 22 on the smoke inlet pipe 21, and then enters the sleeve 26 along the tangent direction of the smoke exhaust pipe 25 through the second through groove 27, and is centrifuged under the centrifugal force. Under the action, dust particles are separated from the airflow and fall onto the guide plate 210 through the ash collecting groove 29 on the bottom plate 28. The clean flue gas is discharged from the through hole 24 through the smoke exhaust pipe 25. If the dust particles need to be cleaned, just open the sealing plug 212 and clean the dust particles out from the ash discharge port 211; wherein, the manhole 13 is used to facilitate observation and maintenance of the equipment, the cover plate 14 is used to close the manhole 13, the hoisting part 15 is used to connect the hoisting equipment to move the device, the upper header 16 is used to install the first connecting pipe 17, the instrument connector 18 is used to install the instrument, the lower header 110 is used to install the second connecting pipe 111, the sewage connector 113 is used for sewage discharge, and the bracket 115 is used to install the serpentine heat exchange tube 116.

Claims

1. A high-efficiency low-temperature waste heat multi-layer cross heat exchanger, comprising a housing (1), characterized in that: An upper header (16) is fixedly connected to the outer shell (1), a first connecting pipe (17) is fixedly connected inside the upper header (16), a cross heat exchange tube (114) is conductively fixed to the first connecting pipe (17), an input end of the cross heat exchange tube (114) is conductively connected to a serpentine heat exchange tube (116), a bracket (115) is fixedly connected to the serpentine heat exchange tube (116), and the bracket (115) is fixedly connected to the outer shell (1), a lower header (110) is provided at the bottom end of the upper header (16), and the lower header (110) is fixedly connected to the outer shell (1), a second connecting pipe (111) is fixedly connected inside the lower header (110), and the input end of the serpentine heat exchange tube (116) is conductively fixed to the second connecting pipe (111).

2. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 1 is characterized in that: A water outlet joint (19) is fixedly connected to the upper surface of the first connecting pipe (17), and a water inlet joint (112) is fixedly connected to the upper surface of the second connecting pipe (111).

3. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 2 is characterized in that: A sewage discharge joint (113) is connected and fixed to the lower surface of both the first connecting pipe (17) and the second connecting pipe (111), and an instrument joint (18) is connected and fixed to the lower surface of the first connecting pipe (17).

4. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 1 is characterized in that: A smoke outlet (11) is provided on one side outer wall of the shell (1), and a smoke inlet (12) is provided on the lower surface of the shell (1).

5. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 4 is characterized in that: The upper surface of the housing (1) is provided with a manhole (13), a cover plate (14) is installed on the manhole (13), hanging parts (15) are provided on both sides of the cover plate (14), and the hanging parts (15) are fixedly connected to the housing (1).

6. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 4 is characterized in that: A filter assembly (2) is arranged at a position corresponding to the smoke inlet (12) in the shell (1), the filter assembly (2) comprising a smoke inlet pipe (21), a first through groove (22), a shell (23), a through hole (24), a smoke exhaust pipe (25), a sleeve (26), a second through groove (27), a bottom plate (28), an ash collecting groove (29), a guide plate (210), an ash exhaust port (211) and a sealing plug (212), and the shell (23) is fixedly connected to the shell (1), the shell (23) is fixedly connected to the smoke inlet pipe (21), a plurality of first through grooves (22) are evenly distributed on the outer wall of the smoke inlet pipe (21), and the shell (23) is fixedly connected to the outer wall of the smoke inlet pipe (21). A plurality of through holes (24) are evenly distributed on the upper surface of the housing (23); a smoke exhaust pipe (25) is fixedly connected to positions corresponding to the through holes (24) in the housing (23); a sleeve (26) is connected to the outer surface of the smoke exhaust pipe (25); and the sleeve (26) is fixedly connected to the housing (23); a second through groove (27) is provided on an outer wall of one side of the sleeve (26) at a position corresponding to the smoke exhaust pipe (25); and the second through groove (27) is arranged along a tangent direction of the smoke exhaust pipe (25); a bottom plate (28) is fixedly connected to the lower surface of the housing (23); and an ash collecting groove (29) is provided on the bottom plate (28) at a position corresponding to the sleeve (26).

7. The high-efficiency low-temperature waste heat multi-layer cross heat exchanger according to claim 6 is characterized in that: A material guide plate (210) is fixedly connected to the lower surface of the bottom plate (28); a plurality of ash discharge ports (211) are evenly distributed on the outer wall of the housing (1) at positions corresponding to the material guide plate (210); and sealing plugs (212) are provided in the ash discharge ports (211).

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