CN216049338U

CN216049338U - Gas-liquid type heat pipe heat exchanger structure for waste heat recovery

Info

Publication number: CN216049338U
Application number: CN202122616539.8U
Authority: CN
Inventors: 袁江; 李慧歆; 王洪科; 张巍耀; 赵铁; 孙远
Original assignee: Yunnan Feng Pu Technology Co ltd
Current assignee: Yunnan Feng Pu Technology Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-15
Anticipated expiration: 2031-10-28

Abstract

The utility model relates to heat pipe heat exchange equipment, in particular to a gas-liquid type heat pipe heat exchanger structure for waste heat recovery, which comprises a heat pipe, wherein a process sleeve is additionally arranged at the middle section of the heat pipe, a water cooling sleeve is fixed on the outer wall of a condensation section of the heat pipe, and two ends of the water cooling sleeve are provided with a medium inlet and a medium outlet; the heat exchanger comprises a tube bank, wherein the tube bank comprises a plurality of heat tubes, medium inlets and outlets of water cooling sleeves of the heat tubes are mutually connected through pipelines to form a cold medium flow passage, and pipelines at two ends of each group of the tube bank are respectively connected with a water inlet tank and a water outlet tank; the tube bank is provided with a plurality of groups, and the tube bank of a plurality of groups is assembled on the frame layer by layer. The heat exchanger can be used in gas-liquid heat exchange occasions; the size of the cold fluid runner shell is greatly reduced, the processing is simple, and the strength requirement and the sealing requirement are extremely easy to reach; the installation size of the heat exchanger can be adjusted according to the position size of an equipment installation site, and the design and installation are flexible.

Description

Gas-liquid type heat pipe heat exchanger structure for waste heat recovery

Technical Field

The utility model relates to heat pipe heat exchange equipment applied to the fields of boilers, industrial kilns, chemical heat equipment, waste heat recovery and utilization and the like, in particular to a gas-liquid type heat pipe heat exchanger structure for waste heat recovery.

Background

In industrial production, a large number of heating furnaces, kilns, industrial boilers and the like exist, exhaust smoke waste heat is not fully utilized, energy waste is serious, and the exhaust smoke waste heat recovery is limited to a certain extent due to corrosion and dust deposition on a heating surface at the tail part of a thermal power station boiler.

The heat pipe is a high-efficiency heat transfer element, can conveniently realize heat transfer between a heat source and a cold source, and can continuously transfer heat in the heat source to the cold source by assembling a plurality of heat pipes into a whole according to needs and placing the heat pipes between the cold source and the hot source. The assembly of such heat pipe elements is therefore referred to as a heat pipe heat exchanger. The heat pipe heat exchanger has excellent performance higher than that of a conventional heat exchanger, and plays an important role in solving the energy problem, particularly in waste heat utilization.

The basic structure of a typical heat pipe heat exchanger is that a tube bundle composed of a plurality of heat pipe elements is arranged in a shell, a partition plate separates a heating section and a cooling section of a heat pipe to form a flow passage of cold and heat media, and fins are additionally arranged on the heating section or the cooling section of the heat pipe elements as required to increase the heat transfer area. Such as: heat exchangers such as heat pipe air pre-heaters (gas-gas heat exchange) and heat pipe coal economizers (gas-liquid heat exchange), but cold and hot fluid flow channels of the heat exchanger structure are basically box-type, and have corresponding defects. The shell of the liquid flow channel is large in size, cannot be flexibly adjusted and installed according to the field space, and is high in strength requirement, difficult to process and difficult to seal; the intermediate partition plate not only meets the sealing requirement, but also has the bearing capacity, and is difficult to manufacture; the traditional cold and hot fluid flow channels of the heat exchanger are basically in a box type structure, the heat exchange efficiency is to be improved, once a leakage problem occurs at a certain position, the heat exchanger needs to be integrally stopped and maintained, the maintenance is difficult and complicated, and the heat exchange efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above technical problems, the present invention provides a gas-liquid type heat pipe heat exchanger structure for waste heat recovery.

The technical scheme provided by the utility model is as follows:

the utility model provides a gas-liquid formula heat pipe exchanger structure for waste heat recovery, includes the heat pipe, heat pipe and gas tank connection, be provided with the fin on the evaporation zone outer wall of heat pipe, the interlude of heat pipe is equipped with the technology sleeve pipe additional, be fixed with the water-cooling sleeve pipe on the condensation zone outer wall of heat pipe, the both ends of water-cooling sleeve pipe are provided with the medium and import and export.

The heat pipe cooling device comprises a pipe bank, wherein the pipe bank comprises a plurality of heat pipes, medium inlets and outlets of water cooling sleeves of the heat pipes are connected with each other through pipelines to form cold medium flow channels, and the pipelines at two ends of each group of pipe bank are respectively connected with a water inlet tank and a water outlet tank.

The tube rows are provided with a plurality of groups, and the tube rows are assembled on the frame layer by layer; two intermediate partition boards are arranged at the upper end and the lower end of the process sleeve of the tube bank, a sealed space is formed by the two intermediate partition boards and the peripheral frame, and a filler is filled in the sealed space.

Preferably, two sides of the process sleeve of the plurality of heat pipes on each group of the pipe rows are fixedly connected through two flat steels, and two ends of the two flat steels are respectively fixed on the frame.

Preferably, a bolt is fixed at the bottom end of the heat pipe, a bolt hole is formed in the bottom of the frame, and the heat pipe is fixed in the bolt hole in the bottom of the frame.

Preferably, the intermediate partition plate comprises a plurality of sections of orifice laths, circular grooves butted with the process sleeves are arranged on two sides of each orifice lath, the plurality of sections of orifice laths are assembled layer by layer along with the plurality of group pipe rows, every two adjacent orifice laths are welded and sealed in a butt joint mode, and the circular grooves of the orifice laths are welded and sealed with the process sleeves on the heat pipes.

The utility model has the following advantages and beneficial effects:

first, the heat pipe of the utility model, adopt the thimble structure, every heat pipe adopts a thimble, join it and form the cold fluid runner, the size of body of such cold fluid runner is greatly reduced, compared with traditional heat exchanger, the intensity requires lowly, process simply, easy to connect and seal, the fabrication cost is cheap, intensity requires, the sealing requirement is very easy to reach. Meanwhile, the fluid flow channel can quickly carry out flowing heat exchange on liquid, and further improves the heat exchange efficiency. And when a certain tube bank goes wrong, the design only needs to stop the corresponding pipeline, and normal heat exchange of other tube banks is not influenced, so that the heat exchanger can normally work, the maintenance is not needed to be stopped, the maintenance can be carried out after the next maintenance period, and the normal working life and the heat exchange effect of the equipment are prolonged.

The utility model adopts a sleeve structure, the cold medium flow channel and the cold and hot fluid are independently opened through the middle partition plate, and the tube bank is supported by two flat steels and fixed on the frame, so that the connection strength and the stability of the tube bank can be ensured, the middle partition plate only needs to meet the sealing performance, the bearing strength does not need to be considered, and the connection strength and the sealing performance are further ensured.

The heat pipe is combined into the pipe row, the pipe row is combined into the heat exchanger, the liquid flow channel is formed by mutually connecting the sleeves, the heat exchanger is small and light, the installation size of the heat exchanger can be flexibly adjusted according to the position, the size and the like of an equipment installation site on the premise of ensuring the heat exchange effect, the design and the installation are flexible, and the disassembly, the assembly and the maintenance are convenient. Unlike the traditional heat exchanger, the size is fixed, and once the heat exchanger is designed and installed, the heat exchanger cannot be flexibly assembled, disassembled and changed, and cannot be suitable for various personalized space requirements.

Drawings

FIG. 1 is a front view of a heat pipe provided by the present invention;

FIG. 2 is a schematic view of the assembly of a tube array provided by the present invention;

FIG. 3 is a partial cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a front view of a heat exchanger provided by the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a side view of FIG. 4;

FIG. 7 is a partial enlarged view a of FIG. 4;

FIG. 8 is a partial enlarged view b of FIG. 6;

FIG. 9 is a schematic view of a partial installation of the intermediate baffle and heat pipe process sleeve of the present invention;

icon: 1-air storage tank, 2-heat pipe, 21-water cooling sleeve, 211-medium inlet and outlet, 22-process sleeve, 23-fin, 24-bolt, 3-flat steel, 4-pipeline, 5-frame, 51-I-steel, 6-intermediate partition board, 61-perforated lath, 611-circular groove, 7-filler, and 8-inlet and outlet water tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1 to 9, the present invention provides a gas-liquid type heat pipe heat exchanger structure for waste heat recovery.

As shown in figure 1, the heat pipe comprises a heat pipe 2, the upper end of the heat pipe 2 is connected with a gas storage tank 1 in a welding mode, the upper end of the heat pipe 2 is communicated with the gas storage tank 1, and working media and gas are filled in the heat pipe 2. The heat pipe 2 is divided into a condensation section and an evaporation section, fins 23 are uniformly arranged on the outer wall of the evaporation section of the heat pipe 2, a process sleeve 22 is additionally arranged at the upper end of the evaporation section of the heat pipe 2, a water-cooling sleeve 21 is fixed on the outer wall of the condensation section of the heat pipe 2, and medium inlets and outlets 211 are arranged at two ends of the water-cooling sleeve 21. The condensation section of the heat pipe 2 adopts a sleeve structure and can be used for the occasions of gas-liquid heat exchange.

The heat pipe 2 and the gas storage tank 1 are vacuumized during manufacturing, working medium is filled, and then appropriate amount of gas is artificially filled. The working medium in the heat pipe 2 is preferably water, and can also be liquid such as alcohol and the like; the gas in the heat pipe 2 is preferably nitrogen, and an inert gas such as argon, xenon, helium, or the like may be selected.

As shown in figure 2, the pipe bank comprises a plurality of heat pipes 2, medium inlets and outlets 211 of water-cooling sleeves 21 of the plurality of heat pipes 2 are mutually connected through pipelines 4 to form a cold medium flow passage, and the pipelines 4 at two ends of each group of pipe banks are respectively connected with a water inlet tank 8 and a water outlet tank 8. As shown in figure 2, the upper end and the lower end of the water-cooling sleeve 21 on two adjacent heat pipes 2 are communicated by the pipeline 4, so that the size of the shell of the cold fluid flow channel formed by the method is greatly reduced, and compared with the traditional heat exchanger, the cold fluid flow channel has the advantages of low strength requirement, simple processing, easy connection and sealing, low manufacturing cost, and extremely easy achievement of the strength requirement and the sealing requirement. The liquid in the medium flow channel flows up and down, so that heat can be rapidly taken away by cooling, and the heat exchange efficiency is improved. And when a certain tube bank goes wrong, the design only needs to stop the corresponding tube bank, and normal heat exchange of other tube banks is not influenced, so that the heat exchanger can normally work, the maintenance is not needed to be stopped, the maintenance can be carried out after the next maintenance period, and the normal working life and the heat exchange effect of the equipment are prolonged.

As shown in fig. 4 to 9, the tube bank in the utility model is provided with a plurality of groups, so that the installation size of the heat exchanger can be adjusted according to the position, size and other requirements of an equipment installation site on the premise of ensuring the heat exchange effect, the heat exchanger is flexible in design and installation, small in size, small in occupied space, convenient to assemble, disassemble and maintain and the like, unlike the traditional heat exchanger, the size is fixed, the fluid channel is also fixed and sealed, and can not be assembled and disassembled randomly, and once the heat exchanger is designed and installed, the heat exchanger can not be flexibly assembled and disassembled and changed, and can not be applied to various personalized space requirements. A plurality of groups of tube rows are assembled on the frame 5 layer by layer to form a gas-liquid type heat pipe exchanger, a heat medium (flue gas and the like) flows through the fin 23 section to release heat, and a cold medium (water supply and the like) flows through the inside of the water-cooling sleeve 21 to absorb heat, so that heat transfer is realized. Two intermediate partition plates 6 are arranged at the upper end and the lower end of a process sleeve 22 of the tube bank, a sealed space is formed by the two intermediate partition plates 6 and a peripheral frame 5, I-shaped steel 51 is selected as the part of the outer frame 5, the intermediate partition plates 6 are welded and sealed to form a sealed space, and a filler 7 is filled in the sealed space for heat preservation and heat insulation.

Furthermore, the two sides of the process sleeve 22 of the plurality of heat pipes 2 on each group of pipe rows are fixedly connected through two flat steels 3, and the two ends of the two flat steels 3 are respectively fixed on the frame 5. The intermediate partition plate 6 only needs to meet the sealing performance, the bearing strength does not need to be considered, and the connection strength and the sealing performance are further ensured.

Furthermore, a bolt 24 is fixed at the bottom end of the heat pipe 2, a bolt hole is formed in the bottom of the frame 5, and the heat pipe 2 is fixed in the bolt hole in the bottom of the frame 5, so that the overall stability of the pipe bank is further enhanced.

As shown in fig. 8, further, the intermediate partition 6 includes several perforated laths 61, that is, the intermediate partition 6 is formed by splicing several perforated laths 61. The two sides of the orifice lath 61 are provided with circular grooves 611 butted with the process sleeve 22, and the orifice laths 61 of a plurality of sections are assembled layer by layer along with a plurality of groups of pipe rows, namely, each group is provided with one pipe row, so that the corresponding orifice laths 61 are installed. The two adjacent pore plate strips 61 are welded and sealed in a butt joint mode, and the circular grooves 611 of the pore plate strips 61 are welded and sealed with the process sleeve 22 on the heat pipe 2. Because the outer diameter of the fin 23 is far greater than that of the base pipe of the heat pipe 2, the intermediate baffle 6 is difficult to penetrate the pipe and requires a larger opening diameter, so that subsequent sealing is affected, and the problem can be perfectly solved by adopting the structure of the pore plate strip 61.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a gas-liquid formula heat pipe exchanger structure for waste heat recovery, includes heat pipe (2), heat pipe (2) and gas holder (1) are connected, be provided with fin (23), its characterized in that on the evaporation zone outer wall of heat pipe (2):

a process sleeve (22) is additionally arranged at the middle section of the heat pipe (2), a water-cooling sleeve (21) is fixed on the outer wall of the condensation section of the heat pipe (2), and medium inlets and outlets (211) are arranged at two ends of the water-cooling sleeve (21);

the heat exchanger comprises a tube bank, wherein the tube bank comprises a plurality of heat pipes (2), medium inlets and outlets (211) of water cooling sleeves (21) of the plurality of heat pipes (2) are mutually connected through pipelines (4) to form cold medium flow channels, and the pipelines (4) at two ends of each group of tube bank are respectively connected with a water inlet tank and a water outlet tank (8);

the tube rows are provided with a plurality of groups, and the tube rows are assembled on the frame (5) layer by layer; two middle clapboards (6) are arranged at the upper end and the lower end of the process sleeve (22) of the tube bank, a sealed space is formed by the two middle clapboards (6) and the peripheral frame (5), and a filler (7) is filled in the sealed space.

2. The vapor-liquid heat pipe heat exchanger structure for waste heat recovery of claim 1, wherein: the two sides of the process sleeve (22) of the heat pipes (2) on each group of the pipe rows are fixedly connected through two flat steels (3), and the two ends of the two flat steels (3) are respectively fixed on the frame (5).

3. The vapor-liquid heat pipe heat exchanger structure for waste heat recovery of claim 1, wherein: the bottom end of the heat pipe (2) is fixed with a bolt (24), the bottom of the frame (5) is provided with a bolt hole, and the bolt (24) of the heat pipe (2) is fixed in the bolt hole at the bottom of the frame (5).

4. The vapor-liquid heat pipe heat exchanger structure for waste heat recovery of claim 1, wherein: the middle partition plate (6) comprises a plurality of sections of perforated laths (61), circular grooves (611) which are in butt joint with the process sleeve (22) are formed in two sides of each perforated lath (61), the plurality of sections of perforated laths (61) are assembled layer by layer along with the plurality of groups of pipe rows, every two adjacent perforated laths (61) are in butt joint welding sealing, and the circular grooves (611) of the perforated laths (61) are in welding sealing with the process sleeve (22) on the heat pipe (2).