CN110514050B - Multistage heat exchange system with supplementary heat source - Google Patents
Multistage heat exchange system with supplementary heat source Download PDFInfo
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- CN110514050B CN110514050B CN201910890955.1A CN201910890955A CN110514050B CN 110514050 B CN110514050 B CN 110514050B CN 201910890955 A CN201910890955 A CN 201910890955A CN 110514050 B CN110514050 B CN 110514050B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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Abstract
The invention relates to a multistage heat exchange system with a supplementary heat source, which comprises a multistage heat exchange system with the supplementary heat source, can improve the heat source temperature of a heat exchanger at the rear stage of a multistage heat exchanger by arranging the supplementary heat source, does not need to increase other external heat sources, can heat tube pass fluid with the later temperature not reaching the requirement aiming at the heat exchanger with a longer heat exchange tube pass, can freely allocate and supply the heat source by controlling a valve, and can meet different temperature requirements. The heat source supplement control device is arranged and can be in a mode of supplying heat and storing heat at the same time when the heat source supply meets the temperature requirement; when the heat source supply does not meet the temperature requirement, the heat source can be switched to a full heat supply mode, the heat storage in the early stage is supplied to the heat exchanger in the later stage, and the temperature of the heat source is increased to meet the requirement.
Description
Technical Field
The invention relates to the technical field of multistage heat exchange systems, in particular to a multistage heat exchange system with a supplementary heat source.
Background
In order to heat fluid to a certain required temperature in the prior art, a multi-stage heat exchanger is generally adopted to realize gradual temperature rise and heating, and in the primary heat exchange process of heat exchange, the temperature of a heat source after heat exchange is obviously reduced due to large temperature difference of a cold source and a heat source, so that the temperature can not meet the requirement when subsequent continuous heating is carried out, and the heating requirement of the next step can not be met. Different waste heat sources are adopted for heating different stages, although the next-stage heat exchanger can be heated, the waste heat sources with different types and temperatures need to be designed in the heating mode, and the waste heat sources are applied to multi-stage heating due to different temperatures, so that the temperature is difficult to control in the actual operation process. The use of different waste heat sources increases the risk of environmental hazards from waste emissions.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a multi-stage heat exchange system with a supplementary heat source, which solves the problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a multi-stage heat exchange system with a supplementary heat source comprises a primary heating device, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first mixer, a second mixer and a secondary heating device. An outlet I of the primary heating device is connected with a tube side inlet of the first heat exchanger through a pipeline,
furthermore, an outlet I and an outlet II are arranged on the side edge of the upper part of the primary heating device, and an inlet is arranged at the lower end of the other side edge of the primary heating device.
Furthermore, an outlet is formed in the lower end of the first heat exchanger and communicated with an inlet in the upper end of the second heat exchanger through a pipeline, an outlet is formed in the lower end of the second heat exchanger, and an outlet in the lower end of the second heat exchanger is communicated with an inlet in the upper end of the third heat exchanger through a pipeline.
Further, a first mixer and a second mixer are arranged between the three heat exchangers, a tube side outlet of the first heat exchanger is communicated with one end of the first mixer through a pipeline, the first mixer is communicated with an outlet II on the primary heating device through a pipeline, a three-way valve I is arranged on the pipeline, the first mixer is communicated with a tube side inlet of the second heat exchanger through a pipeline, and a tube side outlet of the second heat exchanger is communicated with the second mixer through a pipeline.
Furthermore, a pipeline communicated with the second mixer is arranged on the pipeline communicated with the primary heating device through a three-way valve I, a three-way valve II is arranged on the pipeline, and one side of the second mixer is communicated with a tube pass inlet of the third heat exchanger through a pipeline.
One side of the secondary heating device is connected with the three-way valve II through a pipeline, and the other side of the secondary heating device is connected with the inlet of the primary heating device through a pipeline.
One side of a lower cavity of a rear separation plate of the second heat exchanger is thermally connected with the secondary heating device through a circulating pipeline I, and a control valve is arranged on the circulating pipeline I.
One side of a lower cavity of a rear separation plate of the third heat exchanger is thermally connected with the secondary heating device through a circulating pipeline II, and a control valve is arranged on the circulating pipeline II.
Further, the tube side outlet of the third heat exchanger is communicated with the inlet of the primary heating device through a pipeline.
The heat source supplement control device comprises a cavity, a fluid inlet, a fluid outlet valve, a control valve, an outlet I and an outlet II, wherein the cavity is divided into two parts by the control valve, an outlet cavity connected with the outlet I and a heat storage cavity connected with the outlet II; the heat storage cavity is arranged on the inner wall of the shell of the primary heating device, the heat storage device is arranged in the heat storage cavity, the fluid outlet valve is positioned at one end of the heat storage cavity, and the fluid inlet is communicated with shell side fluid.
And a temperature sensor is arranged at the inlet and the outlet of the heat exchange device.
The first heat exchanger inlet 15 is provided in an upper compartment of the upper partition plate 16 and the first heat exchanger outlet 19 is provided in a lower compartment of the lower partition plate 17.
The inlet and outlet of the first heat exchanger and the third heat exchanger are arranged at the same position.
Compared with the prior art, the invention provides a multistage heat exchange system with a supplementary heat source, which has the following beneficial effects:
according to the multistage heat exchange system with the supplementary heat source, the supplementary heat source is arranged, so that the heat source temperature of the heat exchanger at the rear stage of the multistage heat exchanger can be increased, and other external heat sources are not required to be added.
For the heat exchanger with a longer heat exchange tube pass, the fluid with the tube pass, the temperature of which cannot reach the requirement, can be heated in a targeted manner.
Through the control valve, the allocation supply of the heat source can be freely allocated, and different temperature requirements can be met. The heat source supplement control device is arranged, so that when the heat source supply meets the temperature requirement and the heat exchange of the temperature can be realized by the heat exchange of the multi-stage heat exchanger, a mode of supplying heat and storing heat is adopted; when the heat source supply does not meet the temperature requirement, the heat source can be switched to a full heat supply mode, the heat storage in the early stage is supplied to the heat exchanger in the later stage, and the temperature of the heat source is increased to meet the requirement.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the present invention.
In the figure: 1-a primary heating device, 2-an outlet I, 3-an outlet II, 4-a first heat exchanger, 5-a second heat exchanger, 6-a third heat exchanger, 7-a first mixer, 8-a second mixer, 9-a three-way valve I, 10-a three-way valve II, 11-a secondary heating device, 12-a circulating pipeline I, 13-a circulating pipeline II, 14-an inlet of the primary heating device, 15-an inlet of the first heat exchanger, 16-an upper partition plate, 17-a lower partition plate, 18-a rear partition plate, 19-an outlet of the first heat exchanger, 20-a connecting pipe, 21-a heat storage device, 22-a fluid inlet, 23-a fluid outlet valve and 24-a control valve.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-2, a multi-stage heat exchange system with a supplementary heat source comprises a primary heating device 1, a first heat exchanger 4, a second heat exchanger 5, a third heat exchanger 6, a first mixer 7, a second mixer 8 and a secondary heating device 11, wherein an outlet I (2) of the primary heating device 1 is connected with a tube side inlet of the first heat exchanger through a pipeline, an outlet I (2) and an outlet II (3) are arranged on the side edge of the upper part of the primary heating device, an inlet is arranged at the lower end of the other side edge of the primary heating device 1, an outlet is arranged at the lower end of the first heat exchanger 4, the outlet is communicated with an inlet at the upper end of the second heat exchanger 5 through a pipeline, an outlet is arranged at the lower end of the second heat exchanger 5, an outlet at the lower end of the second heat exchanger 5 is communicated with an inlet at the upper end of the third heat exchanger 6 through a, the tube side outlet of the first heat exchanger 4 is communicated with one end of a first mixer 7 through a pipeline, the first mixer 7 is communicated with an outlet II (3) on the primary heating device 1 through a pipeline, a three-way valve I (9) is arranged on the pipeline, the first mixer 7 is communicated with the tube side inlet of a second heat exchanger 5 through a pipeline, the tube side outlet of the second heat exchanger 5 is communicated with a second mixer 8 through a pipeline, the pipeline communicated with the first mixer 7 and the primary heating device 1 is provided with a pipeline communicated with the second mixer 8 through a three-way valve I (9), a three-way valve II (10) is arranged on the pipeline, one side of the second mixer 8 is communicated with the tube side inlet of a third heat exchanger 6 through a pipeline, one side of a secondary heating device is connected with the three-way valve II (10) through a pipeline, the other side of the secondary heating device is connected with the inlet of the primary heating device through a pipeline, one side of a lower cavity of a rear partition plate of the second heat exchanger 5, the heat source supplementing control device comprises a cavity, a fluid inlet 22, a fluid outlet valve 23, a control valve 24, an outlet I (2) and an outlet II (3), wherein the cavity is divided into two parts by the control valve 24, an outlet cavity connected with the outlet I (2) and a heat storage cavity connected with the outlet II (3); the heat storage cavity is arranged on the inner wall of the shell of the primary heating device 1, the heat storage device is arranged in the heat storage cavity, the fluid outlet valve 23 is positioned at one end of the heat storage cavity, and the fluid inlet 22 is communicated with shell side fluid; the inlet and outlet positions of the heat exchanger are provided with temperature sensors, the inlet 15 of the first heat exchanger is arranged in an upper separation cavity of an upper separation plate 16, the outlet 19 of the first heat exchanger is arranged in a lower separation cavity of a lower separation plate 17, and the inlet and outlet positions of the heat exchangers of the first heat exchanger and the third heat exchanger are the same.
The working process is as follows: firstly, heat source fluid is introduced into a tube side of a primary heating device 1, heat is transferred to shell side fluid through the tube side, the shell side fluid enters an outlet cavity of a heat source supplement control device through a fluid inlet 22 after heat exchange, a control valve 24 is opened, a part of the heat source fluid flows out through an outlet I2 and enters a first heat exchanger 4 for heat exchange, the other part of the heat source fluid enters a heat storage cavity to store heat for heat storage materials, and a valve on an outlet II 3 and a fluid outlet valve 23 are controlled in the process to realize heat storage. The heat source fluid after heat release is returned to the housing of the primary heating apparatus 1 through the fluid outlet valve 23 to be reheated, and on the other hand, the heat source fluid exchanges heat with the fluid to be heated, and the fluid to be heated is gradually heated by the first-third heat exchangers through the connection pipe 20.
When the temperature sensor detects that the temperature of the outlet 19 of the first heat exchanger does not reach the required temperature, the valve of the outlet II 3 is opened, the fluid outlet valve 23 is closed, the other part of the fluid flows out, enters the first mixer 7 through the three-way valve I9, is mixed with the heat source fluid after heat exchange in the first heat exchanger, the heat source temperature is increased, then the fluid enters the second heat exchanger for heat exchange, and similarly, the three-way valve II 10 is controlled, the heat source fluid is mixed in the second mixer 8, and the heat source temperature is increased.
When the temperature sensor detects that the temperature of the outlet 19 of the first heat exchanger reaches the required temperature and the temperature of the tube side fluid of the lower separation cavity on the lower side of the rear separation plate 18 of the second heat exchanger does not reach the set temperature, the three-way valve I9 and the three-way valve II 10 are controlled, the heat source fluid enters the secondary heating device 11 through a pipeline to supply heat to the circulating pipeline I (12), and the valve on the circulating pipeline I (12) is controlled to transfer heat to the tube side fluid until the temperature requirement is met. The same control method can be applied to the temperature control of the third heat exchanger.
The tube side fluid of the third heat exchanger after heat exchange and the fluid of the secondary heating device 11 are communicated through a pipeline and are led into the primary heating device 1 to be reheated, so that circulation is achieved.
Claims (7)
1. A multi-stage heat exchange system with a supplementary heat source comprises a primary heating device, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first mixer, a second mixer and a secondary heating device; the outlet I of the primary heating device is connected with the tube side inlet of the first heat exchanger through a pipeline, a first mixer and a second mixer are arranged between the three heat exchangers, the tube side outlet of the first heat exchanger is communicated with one end of the first mixer through a pipeline, the first mixer is communicated with the outlet II on the primary heating device through a pipeline, a three-way valve I is arranged on the pipeline, the first mixer is communicated with the tube side inlet of the second heat exchanger through a pipeline, the tube side outlet of the second heat exchanger is communicated with the second mixer through a pipeline, the pipeline communicated with the second mixer through the three-way valve I is arranged on the pipeline communicated with the primary heating device, a three-way valve II is arranged on the pipeline, one side of the second mixer is communicated with the tube side inlet of the third heat exchanger through a pipeline, one side of the secondary heating device is connected with the three-way valve II through a pipeline, and the other side of the primary heating device is connected.
2. The multi-stage heat exchange system with a supplemental heat source of claim 1, wherein: furthermore, an outlet I and an outlet II are arranged on the side edge of the upper part of the primary heating device, and an inlet is arranged at the lower end of the other side edge of the primary heating device.
3. The multi-stage heat exchange system with a supplemental heat source of claim 1, wherein: the lower end of the first heat exchanger is provided with an outlet which is communicated with an inlet at the upper end of the second heat exchanger through a pipeline, the lower end of the second heat exchanger is provided with an outlet, and an outlet at the lower end of the second heat exchanger is communicated with an inlet at the upper end of the third heat exchanger through a pipeline.
4. The multi-stage heat exchange system with a supplemental heat source of claim 1, wherein: one side of a lower cavity of a rear partition plate of the second heat exchanger is thermally connected with the secondary heating device through a circulating pipeline I, and a control valve is arranged on the circulating pipeline I; one side of a lower cavity of a rear separation plate of the third heat exchanger is thermally connected with the secondary heating device through a circulating pipeline II, and a control valve is arranged on the circulating pipeline II.
5. The multi-stage heat exchange system with a supplemental heat source of claim 1, wherein: the heat source supplement control device comprises a cavity, a fluid inlet, a fluid outlet valve, a control valve, an outlet I and an outlet II, wherein the cavity is divided into two parts by the control valve, an outlet cavity connected with the outlet I and a heat storage cavity connected with the outlet II; the heat storage cavity is arranged on the inner wall of the shell of the primary heating device, the heat storage device is arranged in the heat storage cavity, the fluid outlet valve is positioned at one end of the heat storage cavity, and the fluid inlet is communicated with shell side fluid.
6. A multi-stage heat exchange system with a supplemental heat source as defined in claim 2 wherein: and the tube side outlet of the third heat exchanger is communicated with the inlet of the primary heater through a pipeline.
7. The multi-stage heat exchange system with a supplemental heat source of claim 1, wherein: the inlet of the first heat exchanger is arranged in the upper separation cavity of the upper separation plate, and the outlet of the first heat exchanger is arranged in the lower separation cavity on the lower side of the lower separation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890955.1A CN110514050B (en) | 2019-09-20 | 2019-09-20 | Multistage heat exchange system with supplementary heat source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890955.1A CN110514050B (en) | 2019-09-20 | 2019-09-20 | Multistage heat exchange system with supplementary heat source |
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| Publication Number | Publication Date |
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| CN110514050A CN110514050A (en) | 2019-11-29 |
| CN110514050B true CN110514050B (en) | 2020-09-18 |
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| CN201910890955.1A Active CN110514050B (en) | 2019-09-20 | 2019-09-20 | Multistage heat exchange system with supplementary heat source |
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| CN113402057B (en) * | 2021-06-18 | 2022-05-17 | 杭州钰龙环境科技有限公司 | Refining treatment equipment for condensate |
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|---|---|---|---|---|
| JPS6036891A (en) * | 1983-08-05 | 1985-02-26 | Tlv Co Ltd | Exhaust device for steam heater |
| CN101312783A (en) * | 2005-11-22 | 2008-11-26 | 倪泰克解决方案有限公司 | Improved apparatus and method for temperature controlled processes |
| CN202582272U (en) * | 2012-01-09 | 2012-12-05 | 泸州品创科技有限公司 | Dividing wall type heat exchanger |
| CN202792628U (en) * | 2012-09-28 | 2013-03-13 | 杭州电子科技大学 | Test and control system of solar energy gather device |
| CN205909716U (en) * | 2016-07-26 | 2017-01-25 | 天津市睿智天成科技发展有限公司 | High -efficient shell and tube heat exchanger |
| CN106403639A (en) * | 2016-10-18 | 2017-02-15 | 原初科技（北京）有限公司 | Gas heating system |
-
2019
- 2019-09-20 CN CN201910890955.1A patent/CN110514050B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6036891A (en) * | 1983-08-05 | 1985-02-26 | Tlv Co Ltd | Exhaust device for steam heater |
| CN101312783A (en) * | 2005-11-22 | 2008-11-26 | 倪泰克解决方案有限公司 | Improved apparatus and method for temperature controlled processes |
| CN202582272U (en) * | 2012-01-09 | 2012-12-05 | 泸州品创科技有限公司 | Dividing wall type heat exchanger |
| CN202792628U (en) * | 2012-09-28 | 2013-03-13 | 杭州电子科技大学 | Test and control system of solar energy gather device |
| CN205909716U (en) * | 2016-07-26 | 2017-01-25 | 天津市睿智天成科技发展有限公司 | High -efficient shell and tube heat exchanger |
| CN106403639A (en) * | 2016-10-18 | 2017-02-15 | 原初科技（北京）有限公司 | Gas heating system |
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| CN110514050A (en) | 2019-11-29 |
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Effective date of registration: 20200812 Address after: 225506 advanced village, Lou Zhuang Town, Jiangyan District, Jiangsu, Taizhou Applicant after: Taizhou Hengda heat exchange equipment manufacturing Co., Ltd Address before: 450000 Henan city of Zhengzhou province Zheng Dong new Yuen Road No. 15 Applicant before: Zhang Chunli |
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