CN219474357U - Shell-and-tube heat exchanger with upper and lower pipes connected in series - Google Patents
Shell-and-tube heat exchanger with upper and lower pipes connected in series Download PDFInfo
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- CN219474357U CN219474357U CN202320237979.9U CN202320237979U CN219474357U CN 219474357 U CN219474357 U CN 219474357U CN 202320237979 U CN202320237979 U CN 202320237979U CN 219474357 U CN219474357 U CN 219474357U
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- 238000007599 discharging Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000005494 condensation Effects 0.000 claims abstract description 16
- 238000009833 condensation Methods 0.000 claims abstract description 16
- 239000002826 coolant Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 31
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 241000237983 Trochidae Species 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of heat exchangers, and discloses an upper-lower series shell-and-tube heat exchanger, which comprises a top heat exchanger and a bottom heat exchanger, wherein the top heat exchanger and the bottom heat exchanger are communicated in series through a communicating pipe; the hot inlet pipe and the hot outlet pipe are communicated through a hot runner; the cold outlet pipe is communicated with the cold inlet pipe through a cold runner; the bottoms of the top heat exchanger and the bottom heat exchanger are respectively provided with a plurality of condensation discharging pipes; the top heat exchanger and the bottom heat exchanger are communicated in series through the communicating pipe, so that the flowing time of a heat medium and a cold medium in a hot runner and a cold runner respectively is increased, the heat exchange time of heat exchange is further improved, liquid formed by the heat medium in the top heat exchanger and the bottom heat exchanger in the passing process can be discharged through the plurality of condensation discharging pipes, the problem that the heat exchange efficiency is low in a shell-and-tube heat exchanger is solved due to the fact that the frosting and even icing are caused by the fact that the liquid stays in the heat exchanger for a long time is avoided.
Description
Technical Field
The utility model relates to the technical field of heat exchangers, in particular to an upper-lower series shell-and-tube heat exchanger.
Background
The heat exchanger is a device for transferring part of energy of a heat medium to a cold medium, and is widely applied to industrial production in various fields such as chemical industry, petroleum, food, electric power, heating ventilation and the like.
The shell-and-tube heat exchanger comprises a shell and a heat exchange tube, wherein the heat exchange tube is arranged in the shell, the heat exchange tube is filled with a heat medium, and the shell is filled with a cold medium, or the heat exchange tube is filled with a cold medium, and the heat between the heat medium and the cold medium is conducted through the wall of the heat exchange tube, so that the heat exchange between the heat medium and the cold medium is realized.
The heat exchange tube and the tube shell of the existing tube-shell heat exchanger are short in length, so that the heat exchange time of heat exchange between a heat medium and a cold medium is shortened, and the heat exchange efficiency is reduced; the longer tube shell or heat exchange tube increases the occupied planar space of the equipment, and the long tube shell or heat exchange tube is easy to carry and damage.
Disclosure of Invention
The utility model aims to provide an upper-lower series shell-and-tube heat exchanger, which aims to solve the problem of low heat exchange efficiency of the shell-and-tube heat exchanger in the heat exchange process in the prior art.
The utility model is realized in such a way that the upper and lower shell-and-tube heat exchangers are connected in series, and the shell-and-tube heat exchangers comprise a top heat exchanger and a bottom heat exchanger, wherein the top heat exchanger is positioned above the bottom heat exchanger, and the top heat exchanger and the bottom heat exchanger are connected in series through a communicating pipe; a cold inlet pipe for the cold medium to enter and a hot outlet pipe for the heat medium to be discharged are arranged on the top heat exchanger; the bottom heat exchanger is provided with a cold outlet pipe for discharging cold medium and a hot inlet pipe for entering heat medium, and the hot inlet pipe and the hot outlet pipe are communicated through a hot runner; the cold outlet pipe is communicated with the cold inlet pipe through a cold runner;
the bottoms of the top heat exchanger and the bottom heat exchanger are respectively provided with a plurality of condensation discharging pipes for discharging condensed liquid, the condensation discharging pipes are respectively arranged at intervals along the length direction of the top heat exchanger and the bottom heat exchanger, and the condensation discharging pipes are communicated with the hot runner; and an oil return pipe is arranged on the bottom heat exchanger and is communicated with the cold runner.
Further, the communicating pipe comprises a hot connecting pipe and a cold connecting pipe, the cold connecting pipe and the hot connecting pipe are oppositely arranged, and the hot connecting pipe and the cold connecting pipe are respectively communicated with the top heat exchanger and the bottom heat exchanger.
Further, the top heat exchanger comprises a top drainage tube box, a top flow guide tube box and a top tube shell, wherein the top drainage tube box and the top flow guide tube box are respectively abutted to two ends of the top tube shell;
the bottom heat exchanger comprises a bottom drainage tube box, a bottom flow guide tube box and a bottom tube shell, and the bottom drainage tube box and the bottom flow guide tube box are respectively abutted to two ends of the bottom tube shell; the bottom tube shell is communicated with the top tube shell through a thermal connecting tube; the top honeycomb duct box is communicated with the bottom honeycomb duct box through a cold connecting pipe.
Further, the cold inlet pipe is positioned on the top drainage pipe box; the cold outlet pipe is positioned on the bottom drainage pipe box; the cold inlet pipe and the cold outlet pipe are communicated through a cold connecting pipe; the oil return pipe is positioned on the bottom drainage pipe box;
the hot outlet pipe is positioned on the top pipe shell; the hot inlet pipe is positioned on the bottom pipe shell; the hot outlet pipe is communicated with the hot inlet pipe through a hot connecting pipe.
Further, the cold outlet pipe and the oil return pipe are arranged in an up-down opposite mode on the bottom drainage pipe box.
Further, a plurality of heat exchange tubes for cooling medium circulation are respectively arranged in the top tube shell and the bottom tube shell, the plurality of heat exchange tubes are connected through a plurality of tube plates, and the tube plates are respectively plugged on the inner side walls of the two ends of the top tube shell and the bottom tube shell;
when the top drainage tube box is communicated with the top drainage tube box through a plurality of heat exchange tubes, the top drainage tube box is communicated with the bottom drainage tube box through a cold connecting tube, and the bottom drainage tube box is communicated with the bottom drainage tube box through a plurality of heat exchange tubes to form the cold runner;
an upper flow passage is formed in a spacing area between the inner side wall of the top tube shell and the outer side wall of the heat exchange tube; a lower flow channel is formed in a spacing area between the inner side wall of the bottom tube shell and the outer side wall of the heat exchange tube, a plurality of heat supply medium circulating baffle plates are respectively arranged in the lower flow channel and the upper flow channel, and the baffle plates are respectively arranged on the inner side walls of the lower flow channel and the upper flow channel in a vertically staggered and spaced manner;
and when the upper runner and the lower runner are communicated through a thermal connecting pipe, the thermal runner is formed.
Further, the top drainage tube box and the bottom drainage tube box are respectively provided with drainage plates for guiding the flow direction of oil liquid, the drainage plates are respectively positioned below the interiors of the top drainage tube box and the bottom drainage tube box, and the drainage plates are obliquely arranged.
Further, a plurality of the dephlegmator tubes are respectively arranged at intervals along the bottom length direction of the top tube shell and the bottom tube shell.
Furthermore, an adjusting valve which is communicated with or closes the oil liquid in the oil return pipe to enter the compressor is arranged on the oil return pipe.
Further, the top heat exchanger and the bottom heat exchanger are connected through a plurality of connecting frames, a plurality of connecting frames are arranged at intervals along the length direction between the top heat exchanger and the bottom heat exchanger, and a supporting frame is arranged on the bottom heat exchanger.
Compared with the prior art ， According to the upper and lower serial shell-and-tube heat exchangers provided by the utility model, the top heat exchanger and the bottom heat exchanger are communicated in series through the communicating pipe, so that the flowing time of a heat medium and a cold medium in a hot runner and a cold runner respectively is increased, the heat exchange time of heat exchange is further increased, liquid formed by passing the heat medium in the top heat exchanger and the bottom heat exchanger can be discharged through the plurality of condensation discharging pipes, the problem that the heat exchanger is damaged due to long residence time of the liquid in the heat exchanger, namely frosting and even icing, is solved, and the problem that the heat exchange efficiency of the shell-and-tube heat exchanger is low in the heat exchange process is solved.
Drawings
Fig. 1 is a schematic perspective view of an upper and lower shell-and-tube heat exchanger provided by the utility model;
fig. 2 is a schematic front view of an upper and lower shell-and-tube heat exchanger according to the present utility model;
fig. 3 is a schematic cross-sectional structure of an upper and lower shell-and-tube heat exchanger according to the present utility model.
In the figure: the heat exchanger comprises a top heat exchanger 100, a bottom heat exchanger 200, a communicating pipe 300, a cold inlet pipe 400, a hot outlet pipe 500, a cold outlet pipe 600, a hot inlet pipe 700, a condensation discharging pipe 800, an oil return pipe 900, a top drainage pipe box 101, a top drainage pipe box 102, a top pipe shell 103, a drainage plate 104, a heat exchange pipe 105, a pipe plate 106, an upper runner 107, a baffle plate 108, a bottom drainage pipe box 201, a bottom drainage pipe box 202, a bottom pipe shell 203, a lower runner 204, a connecting frame 205, a supporting frame 206, a hot connecting pipe 301 and a cold connecting pipe 302.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
The implementation of the present utility model will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present utility model, and specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1-3, a preferred embodiment of the present utility model is provided.
The upper and lower series shell-and-tube heat exchangers comprise a top heat exchanger 100 and a bottom heat exchanger 200, wherein the top heat exchanger 100 is positioned above the bottom heat exchanger 200 and is communicated in series through a communicating pipe 300; the top heat exchanger 100 is provided with a cold inlet pipe 400 for the cold medium to enter and a hot outlet pipe 500 for the heat medium to be discharged; the bottom heat exchanger 200 is provided with a cold outlet pipe 600 for discharging cold medium and a hot inlet pipe 700 for entering heat medium, and the hot inlet pipe 700 is communicated with the hot outlet pipe 500 through a hot runner; the cold outlet pipe 600 is communicated with the cold inlet pipe 400 through a cold runner;
the bottoms of the top heat exchanger 100 and the bottom heat exchanger 200 are respectively provided with a plurality of condensation discharging pipes 800 for discharging condensed liquid, the condensation discharging pipes 800 are respectively arranged at intervals along the length direction of the top heat exchanger 100 and the bottom heat exchanger 200, and the condensation discharging pipes 800 are communicated with a hot runner; the bottom heat exchanger 200 is provided with an oil return pipe 900, and the oil return pipe 900 is communicated with a cold runner.
The upper and lower serial shell-and-tube heat exchangers provided by the above, the top heat exchanger 100 and the bottom heat exchanger 200 are communicated in series through the communicating pipe 300, so that the flowing time of the heat medium and the cold medium in the hot runner and the cold runner is increased, the heat exchange time of the heat exchange is further improved, the liquid formed by the heat medium in the top heat exchanger 100 and the bottom heat exchanger 200 in passing time can be discharged through the plurality of condensation discharging pipes 800, the problem that the heat exchange efficiency is low in the heat exchange process of the shell-and-tube heat exchanger is solved because the liquid stays in the heat exchanger for a long time to cause frosting and even icing to cause the heat exchanger damage.
When the thermal medium is oil gas and the cold medium is refrigerant, when the oil gas passes through the thermal flow channel, the outer side wall of the thermal flow channel can be heated, so that the refrigerant passing through the thermal flow channel is heated, lubricating oil contained in the refrigerant can be heated to form liquid oil, when the oil is accumulated and is not discharged, the normal use of the shell-and-tube heat exchanger can be influenced, and the shell-and-tube heat exchanger utilizes the oil return pipe 900 to discharge the oil generated in the thermal flow channel, so that the oil is prevented from accumulating in the shell-and-tube heat exchanger.
In the present embodiment, the communication pipe 300 includes a hot connection pipe 301 and a cold connection pipe 302, the cold connection pipe 302 and the hot connection pipe 301 being disposed opposite to each other, the hot connection pipe 301 and the cold connection pipe 302 communicating the top heat exchanger 100 and the bottom heat exchanger 200, respectively.
The communicating pipe 300 communicates the hot runner in the top heat exchanger 100 with the hot runner in the bottom heat exchanger 200 through the hot connecting pipe 301, so as to avoid the connection of the hot runner in the top heat exchanger 100 with the cold runner in the bottom heat exchanger 200;
the communicating pipe 300 communicates the cold runner in the top heat exchanger 100 with the cold runner in the bottom heat exchanger 200 through the cold connecting pipe 302, avoiding the cold runner in the top heat exchanger 100 from being connected with the hot runner in the bottom heat exchanger 200.
In this embodiment, the top heat exchanger 100 includes a top draft tube box 101, a top draft tube box 102, and a top tube shell 103, where the top draft tube box 101 and the top draft tube box 102 are respectively abutted to two ends of the top tube shell 103;
the bottom heat exchanger 200 comprises a bottom draft tube box 201, a bottom draft tube box 202 and a bottom tube shell 203, wherein the bottom draft tube box 201 and the bottom draft tube box 202 are respectively abutted to two ends of the bottom tube shell 203; the bottom tube shell 203 is communicated with the top tube shell 103 through a thermal connecting tube 301; the top flow-guiding pipe box 102 and the bottom flow-guiding pipe box 202 are communicated through a cold connecting pipe 302.
The hot runner between the bottom tube shell 203 and the top tube shell 103 is communicated through the hot connecting tube 301, and the cold runner between the top tube shell 102 and the bottom tube shell 202 is communicated through the cold connecting tube 302, so that the hot runner and the cold runner between the top heat exchanger 100 and the bottom heat exchanger 200 are communicated with each other, the flowing time of a hot medium and a cold medium in the hot runner and the cold runner respectively is increased, and the heat exchange time of heat exchange is further improved.
The cold inlet pipe 400 is positioned on the top draft tube box 101; the cold exit tube 600 is positioned on the bottom draft tube box 201; the cold inlet pipe 400 is communicated with the cold outlet pipe 600 through a cold connecting pipe 302; the oil return pipe 900 is positioned on the bottom drainage pipe box 201;
the hot tube 500 is located on the top cartridge 103; the hot inlet tube 700 is located on the bottom cartridge 203; the hot outlet pipe 500 is communicated with the hot inlet pipe 700 through a hot connecting pipe 301. In this way, the heat medium and the cold medium flow in opposite directions, and heat exchange efficiency can be increased.
The cold outlet pipe 600 and the oil return pipe 900 are arranged in a vertically opposite manner on the bottom drain box 201. In this way, the gas of the cold medium can be directly discharged from the cold outlet pipe 600, and the oil liquid heated and liquefied by the lubricating oil in the cold medium can be automatically discharged into the oil return pipe 900 by utilizing gravity, so that the separation and discharge of the cold medium and the oil liquid are improved.
In this embodiment, a plurality of heat exchange tubes 105 for cooling medium circulation are respectively arranged in the top tube shell 103 and the bottom tube shell 203, the plurality of heat exchange tubes 105 are connected through a plurality of tube plates 106, and the plurality of tube plates 106 are respectively plugged on the inner side walls of the two ends of the top tube shell 103 and the bottom tube shell 203;
when the top draft tube box 101 is communicated with the top draft tube box 102 through the plurality of heat exchange tubes 105, the top draft tube box 102 is communicated with the bottom draft tube box 202 through the cold connecting tube 302, and the bottom draft tube box 202 is communicated with the bottom draft tube box 201 through the plurality of heat exchange tubes 105 to form a cold runner;
an upper flow passage 107 is formed in a space region between the inner side wall of the top shell 103 and the outer side wall of the heat exchange tube 105; a lower flow channel 204 is formed in a spacing region between the inner side wall of the bottom tube shell 203 and the outer side wall of the heat exchange tube 105, a plurality of baffles 108 for the circulation of the heating medium are respectively arranged in the lower flow channel 204 and the upper flow channel 107, and the baffles 108 are respectively arranged on the inner side walls of the lower flow channel 204 and the upper flow channel 107 in a vertically staggered and spaced manner;
when the upper flow passage 107 and the lower flow passage 204 communicate with each other through the thermal connection pipe 301, a hot flow passage is formed.
The cold medium sequentially enters the plurality of heat exchange tubes 105, the top flow guide tube box 102, the cold connecting tube 302, the bottom flow guide tube box 202, the plurality of heat exchange tubes 105 and the bottom flow guide tube box 201 in the top tube shell 103 through the top flow guide tube box 101, and finally is discharged from the cold tube 600, so that the distance of a cold runner is increased, and the heat exchange efficiency of the cold medium is increased;
the heat medium is blocked by the baffles 108 in the upper flow passage 107, so that the heat exchange time of the heat medium to the heat exchange tube 105 is increased, and the heat medium enters the lower flow passage 204 through the heat connecting tube 301 and is blocked by the baffles 108 in the lower flow passage 204, so that the heat exchange time of the heat medium to the heat exchange tube 105 is increased, and the heat exchange efficiency of the heat medium to the cold medium is increased as a whole.
The top drainage tube box 101 and the bottom drainage tube box 202 are respectively provided with a drainage plate 104 for guiding the flow direction of oil, the drainage plates 104 are respectively positioned below the inner parts of the top drainage tube box 101 and the bottom drainage tube box 202, and the drainage plates 104 are obliquely arranged. In this way, the oil liquid liquefied in the refrigerant can be introduced into the plurality of heat exchange tubes 105 from the top draft tube box 101 or the bottom draft tube box 202 through the draft tube plates 104 to flow, so that the oil liquid can be discharged into the oil return tube 900.
In this embodiment, a plurality of dephlegmator tubes 800 are spaced apart along the bottom length of the top cartridge 103 and the bottom cartridge 203, respectively. A condensation draining pipe 800 is arranged between the baffles 108 adjacent to the horizontal, and the condensation draining pipe 800 is used for draining frosted liquid, so that the frosted liquid is prevented from being blocked in the top tube shell 103 and the bottom tube shell 203, and the tube shell type heat exchanger is damaged.
The oil return pipe 900 is provided with an adjusting valve which is communicated with or closes the oil in the oil return pipe 900 from entering the compressor. Thus, whether the oil in the oil return pipe 900 enters the compressor can be effectively controlled, and damage caused by lack of oiliness in the compressor is avoided.
In this embodiment, the top heat exchanger 100 and the bottom heat exchanger 200 are connected by a plurality of connection frames 205, the plurality of connection frames 205 are arranged at intervals along the length direction between the top heat exchanger 100 and the bottom heat exchanger 200, and the bottom heat exchanger 200 is provided with a support frame 206.
The top heat exchanger 100 and the bottom heat exchanger 200 are connected through the connecting frame 205, so that the series connection installation of the top heat exchanger 100 and the bottom heat exchanger 200 can be increased, and the supporting force of the top heat exchanger 100 and the bottom heat exchanger 200 is stabilized by the supporting frame 206.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The heat exchanger comprises a top heat exchanger and a bottom heat exchanger, wherein the top heat exchanger is positioned above the bottom heat exchanger, and the top heat exchanger and the bottom heat exchanger are communicated in series through a communicating pipe; a cold inlet pipe for the cold medium to enter and a hot outlet pipe for the heat medium to be discharged are arranged on the top heat exchanger; the bottom heat exchanger is provided with a cold outlet pipe for discharging cold medium and a hot inlet pipe for entering heat medium, and the hot inlet pipe and the hot outlet pipe are communicated through a hot runner; the cold outlet pipe is communicated with the cold inlet pipe through a cold runner;
the bottoms of the top heat exchanger and the bottom heat exchanger are respectively provided with a plurality of condensation discharging pipes for discharging condensed liquid, the condensation discharging pipes are respectively arranged at intervals along the length direction of the top heat exchanger and the bottom heat exchanger, and the condensation discharging pipes are communicated with the hot runner; and an oil return pipe is arranged on the bottom heat exchanger and is communicated with the cold runner.
2. The upper and lower shell-and-tube heat exchangers according to claim 1, wherein the communication pipe includes a hot connection pipe and a cold connection pipe, which are disposed opposite to each other, the hot and cold connection pipes respectively communicating the top heat exchanger and the bottom heat exchanger with each other.
3. The upper and lower tandem shell-and-tube heat exchanger according to claim 2, wherein the top heat exchanger comprises a top draft tube box and a top tube shell, the top draft tube box and the top draft tube box respectively abutting two ends of the top tube shell;
the bottom heat exchanger comprises a bottom drainage tube box, a bottom flow guide tube box and a bottom tube shell, and the bottom drainage tube box and the bottom flow guide tube box are respectively abutted to two ends of the bottom tube shell; the bottom tube shell is communicated with the top tube shell through a thermal connecting tube; the top honeycomb duct box is communicated with the bottom honeycomb duct box through a cold connecting pipe.
4. A top and bottom series shell and tube heat exchanger as set forth in claim 3 wherein said cold inlet tube is located on a top draft tube box; the cold outlet pipe is positioned on the bottom drainage pipe box; the cold inlet pipe and the cold outlet pipe are communicated through a cold connecting pipe; the oil return pipe is positioned on the bottom drainage pipe box;
the hot outlet pipe is positioned on the top pipe shell; the hot inlet pipe is positioned on the bottom pipe shell; the hot outlet pipe is communicated with the hot inlet pipe through a hot connecting pipe.
5. The heat exchanger of claim 4, wherein the cold outlet pipe and the oil return pipe are arranged in a vertically opposite manner on the bottom draft tube box.
6. The heat exchanger of any one of claims 3 to 4, wherein a plurality of heat exchange tubes for circulating a cooling medium are respectively arranged in the top tube shell and the bottom tube shell, the plurality of heat exchange tubes are connected through a plurality of tube plates, and the tube plates are respectively plugged on the inner side walls of the two ends of the top tube shell and the bottom tube shell;
when the top drainage tube box is communicated with the top drainage tube box through a plurality of heat exchange tubes, the top drainage tube box is communicated with the bottom drainage tube box through a cold connecting tube, and the bottom drainage tube box is communicated with the bottom drainage tube box through a plurality of heat exchange tubes to form the cold runner;
an upper flow passage is formed in a spacing area between the inner side wall of the top tube shell and the outer side wall of the heat exchange tube; a lower flow channel is formed in a spacing area between the inner side wall of the bottom tube shell and the outer side wall of the heat exchange tube, a plurality of heat supply medium circulating baffle plates are respectively arranged in the lower flow channel and the upper flow channel, and the baffle plates are respectively arranged on the inner side walls of the lower flow channel and the upper flow channel in a vertically staggered and spaced manner;
and when the upper runner and the lower runner are communicated through a thermal connecting pipe, the thermal runner is formed.
7. The heat exchanger of claim 6, wherein the top draft tube box and the bottom draft tube box are respectively provided with a draft tube plate for guiding the flow direction of oil, the draft tube plates are respectively positioned below the insides of the top draft tube box and the bottom draft tube box, and the draft tube plates are arranged in an inclined manner.
8. The upper and lower shell-and-tube heat exchanger according to any one of claims 3 to 5, wherein a plurality of the tube-in-tube are spaced apart along the bottom length of the top shell-and-tube, respectively, from the bottom shell-and-tube.
9. An upper and lower shell and tube heat exchanger as set forth in any one of claims 1 to 5 wherein said oil return tube is provided with a regulating valve for communicating or closing the oil in the oil return tube into the compressor.
10. The upper and lower serial shell-and-tube heat exchangers according to any one of claims 1 to 5, wherein the top heat exchanger and the bottom heat exchanger are connected by a plurality of connecting frames, the plurality of connecting frames are arranged at intervals along the length direction between the top heat exchanger and the bottom heat exchanger, and the bottom heat exchanger is provided with a supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237979.9U CN219474357U (en) | 2023-02-03 | 2023-02-03 | Shell-and-tube heat exchanger with upper and lower pipes connected in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320237979.9U CN219474357U (en) | 2023-02-03 | 2023-02-03 | Shell-and-tube heat exchanger with upper and lower pipes connected in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219474357U true CN219474357U (en) | 2023-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320237979.9U Active CN219474357U (en) | 2023-02-03 | 2023-02-03 | Shell-and-tube heat exchanger with upper and lower pipes connected in series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219474357U (en) |
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2023
- 2023-02-03 CN CN202320237979.9U patent/CN219474357U/en active Active
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