CN211425153U - Intelligent temperature-control type efficient energy-saving heat exchanger - Google Patents
Intelligent temperature-control type efficient energy-saving heat exchanger Download PDFInfo
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- CN211425153U CN211425153U CN201922481749.3U CN201922481749U CN211425153U CN 211425153 U CN211425153 U CN 211425153U CN 201922481749 U CN201922481749 U CN 201922481749U CN 211425153 U CN211425153 U CN 211425153U
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Abstract
The utility model discloses an intelligent temperature control type high-efficiency energy-saving heat exchanger, which comprises a heat exchanger body with a shell-and-tube structure and a PLC control cabinet electrically connected with the heat exchanger body, wherein the front end and the rear end of the heat exchanger body are respectively provided with a medium hot liquid inlet connected with a medium liquid inlet pipe flange and a medium cold liquid outlet connected with a medium liquid outlet pipe flange; the upper end of the heat exchanger body is provided with a target cold liquid inlet connected with a target liquid inlet pipe flange and a target liquid circulation inlet connected with a target liquid circulation pipe flange; the lower end of the heat exchanger body is provided with a target high-temperature liquid outlet connected with a target liquid high-temperature liquid outlet pipe flange and a target low-temperature liquid outlet connected with a target liquid low-temperature liquid outlet pipe flange; the utility model discloses an intelligence accuse temperature type energy-efficient heat exchanger adjusts through the target hydrothermal solution temperature to the output, reaches the required working solution temperature of target equipment for target equipment can move safely and stably.
Description
Technical Field
The utility model relates to a heat exchanger, concretely relates to intelligent accuse temperature type energy-efficient heat exchanger belongs to heat exchanger technical field.
Background
With the continuous improvement of the industrial production level, the requirements on process equipment and production conditions are higher and higher. The production process of many industrial equipment needs hot water to heat processing materials or equipment, the heating mode commonly used at present is to provide certain temperature for target cold liquid to heat by using a heating system, discharging temperature control becomes an important link in industrial production and scientific research activities, and whether the temperature can be successfully controlled within a required range is related to production quality and efficiency.
A heat exchanger is a device for transferring part of heat of hot liquid to cold liquid, and is also called as a heat exchanger. The heat exchanger can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry, petroleum, power, food and other industrial production, and is widely applied. The traditional heat exchanger has the defects of single heat exchange mode, poor heat exchange effect, low heat exchange efficiency, poor discharge temperature control effect of the heat exchanger, incapability of meeting ideal liquid outlet temperature requirements, influence on normal operation of target equipment and even easiness in occurrence of safety accidents caused by overhigh liquid outlet temperature of target liquid. Therefore, in order to solve the above problems, it is necessary to design an intelligent temperature-controlled efficient energy-saving heat exchanger.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides an intelligent temperature control type high-efficiency energy-saving heat exchanger, which can adjust the output target hydrothermal solution temperature to reach the working solution temperature required by the target equipment, so that the target equipment can safely and stably operate; the input quantity of the high-temperature medium liquid can be adjusted, the heat source loss is reduced, and the energy is saved.
The utility model discloses an intelligent temperature control type high-efficiency energy-saving heat exchanger, which comprises a shell-and-tube heat exchanger body and a PLC control cabinet electrically connected with the heat exchanger body, wherein the front end and the rear end of the heat exchanger body are respectively provided with a medium hot liquid inlet connected with a medium liquid inlet pipe flange and a medium cold liquid outlet connected with a medium liquid outlet pipe flange; the upper end of the heat exchanger body is provided with a target cold liquid inlet connected with a target liquid inlet pipe flange and a target liquid circulation inlet connected with a target liquid circulation pipe flange; the lower end of the heat exchanger body is provided with a target high-temperature liquid outlet connected with a target liquid high-temperature liquid outlet pipe flange and a target low-temperature liquid outlet connected with a target liquid low-temperature liquid outlet pipe flange; the target liquid high-temperature liquid outlet pipe and the target liquid low-temperature liquid outlet pipe are respectively connected with the target liquid outlet pipe through a three-way joint; a liquid outlet switch valve is arranged on the target liquid outlet pipe;
a three-way valve is arranged on the target liquid high-temperature liquid outlet pipe; one end of the target liquid circulating pipe, which is far away from the target liquid circulating inlet, is connected to the other outlet of the three-way valve through the variable-frequency circulating pump; a first flow regulating valve is arranged on the target liquid low-temperature liquid outlet pipe; the first flow regulating valve, the frequency converter of the variable frequency circulating pump, the three-way valve and the liquid outlet switch valve are respectively and electrically connected with the PLC control cabinet;
a first temperature transmitter, a second temperature transmitter and a third temperature transmitter for detecting the temperature of the target liquid are respectively arranged on the target liquid high-temperature liquid outlet pipe, the target liquid low-temperature liquid outlet pipe and the target liquid outlet pipe; and the first temperature transmitter, the second temperature transmitter and the third temperature transmitter are respectively in electric control connection with the PLC control cabinet.
As a preferred embodiment, a second flow regulating valve is installed on the medium liquid inlet pipe; the second flow regulating valve is electrically connected with the PLC control cabinet, the second flow regulating valve can be installed on the medium liquid inlet pipe, when the temperature value detected by the first temperature transmitter is lower than the set temperature, the opening degree of the second flow regulating valve can be controlled and regulated by the PLC control cabinet to regulate and increase the input quantity of high-temperature medium liquid, and the target hot liquid can reach the set output temperature more quickly by combining with circulating heating, so that the heat exchange efficiency is improved; when the temperature value that first temperature transmitter detected is higher than the settlement temperature, through the aperture of PLC switch board control and regulation second flow control valve to the regulation reduces the input of high temperature medium liquid, reduces the heat transfer of high temperature medium liquid and target cold liquid, and reduces the heat source loss, more energy-conserving.
Furthermore, the PLC control cabinet consists of a PLC controller and a minimum control unit thereof.
Furthermore, the target cold liquid inlet and the target liquid circulation inlet are arranged above the heat exchanger body in a staggered manner from front to back; the target cold liquid inlet is arranged at one side close to the medium cold liquid outlet; the target liquid circulation inlet is arranged at one side close to the medium hot liquid inlet.
Furthermore, the target high-temperature liquid outlet and the target low-temperature liquid outlet are arranged below the heat exchanger body in a staggered manner from front to back; the target high-temperature liquid outlet is arranged at one side close to the medium hot liquid inlet; the target low-temperature liquid outlet is arranged at one side close to the medium cold liquid outlet.
As a preferred embodiment, the target cold liquid inlet and the target low-temperature liquid outlet are arranged in a vertically staggered manner; the target high-temperature liquid outlet and the target liquid circulation inlet are arranged in a vertically staggered mode.
Further, still include with the liquid crystal display that its PLC controller of PLC switch board is connected for the temperature that shows first to third temperature transmitter and detect, and be used for showing opening of first flow control valve, frequency conversion circulating pump, three-way valve, play liquid switch valve and second flow control valve and stop the state, the operating personnel of being convenient for looks over and overhauls.
Compared with the prior art, the intelligent temperature control type high-efficiency energy-saving heat exchanger achieves the temperature of the working fluid required by the target equipment by adjusting the temperature of the output target hot fluid, so that the target equipment can safely and stably operate; the input quantity of the high-temperature medium liquid can be adjusted, so that the heat source loss is reduced, and the energy is saved; the input quantity of the high-temperature medium liquid is adjusted and combined with circulating heating, so that the target hot liquid can reach the set output temperature more quickly, and the heat exchange efficiency is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the overall structure of embodiment 2 of the present invention.
The components in the drawings are labeled as: 1-a heat exchanger body, 2-a PLC control cabinet, 3-a medium liquid inlet pipe, 4-a medium hot liquid inlet, 5-a medium liquid outlet pipe, 6-a medium cold liquid outlet, 7-a target liquid inlet pipe, 8-a target cold liquid inlet, 9-a target liquid circulating pipe, 10-a target liquid circulating inlet, 11-a target liquid high-temperature liquid outlet pipe, 12-a target high-temperature liquid outlet, 13-a target liquid low-temperature liquid outlet pipe, 14-a target low-temperature liquid outlet, 15-a three-way joint, 16-a target liquid outlet pipe, 17-a liquid outlet switch valve, 18-a three-way valve, 19-a variable frequency circulating pump, 20-a first flow regulating valve, 21-a first temperature transmitter, 22-a second temperature transmitter, 23-a third temperature transmitter and 24-a liquid crystal display screen, 25-second flow regulating valve.
Detailed Description
Example 1:
as shown in fig. 1, the utility model discloses an intelligent temperature control type high-efficiency energy-saving heat exchanger, including a heat exchanger body 1 of shell-and-tube structure, and a PLC control cabinet 2 electrically connected with the heat exchanger body 1, the front and back ends of the heat exchanger body 1 are respectively provided with a medium hot liquid inlet 4 flange-connected with a medium liquid inlet pipe 3 and a medium cold liquid outlet 6 flange-connected with a medium liquid outlet pipe 5; the upper end of the heat exchanger body 1 is provided with a target cold liquid inlet 8 connected with a target liquid inlet pipe 7 through a flange and a target liquid circulation inlet 10 connected with a target liquid circulation pipe 9 through a flange; the lower end of the heat exchanger body 1 is provided with a target high-temperature liquid outlet 12 connected with a target liquid high-temperature liquid outlet pipe 11 in a flange mode and a target low-temperature liquid outlet 14 connected with a target liquid low-temperature liquid outlet pipe 13 in a flange mode; the target liquid high-temperature liquid outlet pipe 11 and the target liquid low-temperature liquid outlet pipe 13 are respectively connected with a target liquid outlet pipe 16 through a three-way joint 15; a liquid outlet switch valve 17 is arranged on the target liquid outlet pipe 16;
a three-way valve 18 is arranged on the target liquid high-temperature liquid outlet pipe 11; one end of the target liquid circulating pipe 9, which is far away from the target liquid circulating inlet 10, is connected to the other outlet of the three-way valve 18 through a variable-frequency circulating pump 19; a first flow regulating valve 20 is arranged on the target liquid low-temperature liquid outlet pipe 13; the first flow regulating valve 20, the frequency converter of the variable frequency circulating pump 19, the three-way valve 18 and the liquid outlet switch valve 17 are respectively and electrically connected with the PLC control cabinet 2;
a first temperature transmitter 21, a second temperature transmitter 22 and a third temperature transmitter 23 for detecting the temperature of the target liquid are respectively arranged on the target liquid high-temperature liquid outlet pipe 11, the target liquid low-temperature liquid outlet pipe 13 and the target liquid outlet pipe 16; the first temperature transmitter 21, the second temperature transmitter 22 and the third temperature transmitter 23 are respectively connected with the PLC control cabinet 2 in an electric control mode.
The PLC control cabinet 2 is composed of a PLC controller and a minimum control unit thereof.
The target cold liquid inlet 8 and the target liquid circulation inlet 10 are arranged above the heat exchanger body 1 in a staggered manner from front to back; the target cold liquid inlet 8 is arranged at one side close to the medium cold liquid outlet 6; the target liquid circulation inlet 10 is arranged at the side close to the medium hot liquid inlet 4.
The target high-temperature liquid outlet 12 and the target low-temperature liquid outlet 14 are arranged below the heat exchanger body 1 in a staggered manner from front to back; the target high-temperature liquid outlet 12 is arranged at one side close to the medium hot liquid inlet 4; the target low-temperature liquid outlet 14 is arranged at one side close to the medium cold liquid outlet 6.
The target cold liquid inlet 8 and the target low-temperature liquid outlet 14 are arranged in a vertically staggered manner; the target high-temperature liquid outlet 12 and the target liquid circulating inlet 10 are arranged in a vertically staggered mode.
And the liquid crystal display screen 24 is electrically connected with the PLC controller of the PLC control cabinet 2.
Example 2:
as shown in fig. 2, the structure of the intelligent temperature-controlled efficient energy-saving heat exchanger of the present invention is basically the same as that of embodiment 1, wherein a second flow regulating valve 25 is installed on the medium inlet pipe 3; the second flow regulating valve 25 is electrically connected with the PLC control cabinet 2.
The utility model discloses an intelligent temperature control type high-efficiency energy-saving heat exchanger, high temperature medium liquid is delivered to a medium hot liquid inlet through a medium liquid inlet pipe by a medium pump and enters a heat exchanger tube pass through the medium hot liquid inlet, and the heat of the high temperature medium liquid is transferred to target cold liquid flowing reversely on the outer wall of a tube bundle through the inner wall of the tube bundle; the temperature of the high-temperature medium liquid is reduced after heat exchange with the target cold liquid in the heat exchanger to form low-temperature medium liquid, and the low-temperature medium liquid is output from the medium liquid outlet pipe to a storage tank for storing the medium liquid through a medium cold liquid outlet;
meanwhile, the target cold liquid is conveyed to a target cold liquid inlet through a target pump through a target liquid inlet pipe, enters the shell side of the heat exchanger through the target cold liquid inlet, and exchanges heat with the high-temperature medium liquid flowing reversely on the inner wall of the tube bundle through the outer wall of the tube bundle; the temperature of the target cold liquid is increased after heat exchange with the high-temperature medium liquid in the heat exchanger to become target hot liquid, and the target hot liquid is output to a target liquid high-temperature liquid outlet pipe through a target high-temperature liquid outlet; a first temperature transmitter on the target liquid high-temperature liquid outlet pipe detects the target hydrothermal liquid temperature in the target liquid high-temperature liquid outlet pipe, converts the detected temperature signal into a digital signal and transmits the digital signal to a PLC control cabinet for analysis and processing, and compares the digital signal with the set temperature,
if the target hydrothermal solution is lower than the set temperature, the PLC control cabinet controls a three-way valve switching passage to enable a target solution circulating pipe to be communicated with a target solution high-temperature liquid outlet pipe, meanwhile, the PLC control cabinet controls a variable-frequency circulating pump to be started, the target hydrothermal solution which does not reach the set temperature is conveyed to a target solution circulating inlet through the target solution circulating pipe, the target hydrothermal solution is conveyed to a heat exchanger again for heat exchange until the target hydrothermal solution temperature detected by a first temperature transmitter reaches the set temperature, the PLC control cabinet controls the three-way valve switching passage to enable a target solution high-temperature liquid outlet pipe to be communicated with the target solution liquid outlet pipe, meanwhile, the PLC control cabinet controls a liquid outlet switch valve and a liquid outlet pump to be opened, and the target solution which meets the temperature requirement is output to target equipment through the liquid outlet pump and the target;
if the target hot liquid is higher than the set temperature, the PLC control cabinet controls a three-way valve to switch a passage, so that the target liquid high-temperature liquid outlet pipe is communicated with the target liquid outlet pipe, and meanwhile, the PLC control cabinet controls to open a first flow valve, so that part of low-temperature target hot liquid subjected to heat exchange in a low-temperature heat exchange area with a smaller heat exchange area of a pipe bundle is output to the target liquid low-temperature liquid outlet pipe from a target low-temperature liquid outlet and is mixed with the high-temperature target hot liquid entering the target liquid outlet pipe through a three-way joint; meanwhile, the temperature of the mixed target hydrothermal solution in the target liquid outlet pipe is detected by the third temperature transmitter, the detected temperature signal is converted into a digital signal and transmitted to the PLC control cabinet for analysis and processing, the digital signal is compared with the set output temperature, if the set temperature is reached, the PLC control cabinet controls the opening of the liquid outlet switch valve and the liquid outlet pump, and the target liquid meeting the temperature requirement is output to target equipment through the target liquid outlet pipe by the liquid outlet pump; if the temperature is higher than the set temperature, the opening degree of the first flow regulating valve is controlled and regulated by the PLC control cabinet until the temperature of the mixed target hot liquid detected by the third temperature transmitter reaches the set temperature; the temperature of the low-temperature target hydrothermal solution in the low-temperature liquid outlet pipe of the target liquid can be detected through the second temperature transmitter, and the detected temperature signal is converted into a digital signal and transmitted to the PLC control cabinet for analysis and processing, so that the analysis and processing of the PLC controller are facilitated, and the adjustment and control of the opening degree of the first flow regulating valve are better realized by combining the temperature of the low-temperature target hydrothermal solution;
in addition, a second flow regulating valve can be arranged on the medium liquid inlet pipe, when the temperature value detected by the first temperature transmitter is lower than the set temperature, the opening degree of the second flow regulating valve can be controlled and regulated through the PLC control cabinet so as to regulate and increase the input quantity of the high-temperature medium liquid, and the target hot liquid can reach the set output temperature more quickly by combining with circulating heating, so that the heat exchange efficiency is improved; when the temperature value that first temperature transmitter detected is higher than the settlement temperature, through the aperture of PLC switch board control and regulation second flow control valve to the regulation reduces the input of high temperature medium liquid, reduces the heat transfer of high temperature medium liquid and target cold liquid, and reduces the heat source loss, more energy-conserving.
A target cold liquid inlet is arranged at one side close to a medium cold liquid outlet, and a target high-temperature liquid outlet is arranged at one side close to a medium hot liquid inlet, so that the target cold liquid and the high-temperature medium liquid can flow in opposite directions, the target cold liquid and the high-temperature medium liquid can gradually exchange heat, and the heat exchange is uniform; the target liquid circulation inlet is arranged on one side close to the medium hot liquid inlet and is vertically staggered with the target hot liquid outlet, so that the target hot liquid which does not reach the set temperature can directly exchange heat with the high-temperature hot medium liquid again, the target hot liquid can reach the set output temperature more quickly, and the heat exchange efficiency is improved; and the target low-temperature liquid outlet is arranged, and can be used for outputting a part of low-temperature target hot liquid subjected to heat exchange in the low-temperature heat exchange area with the smaller heat exchange area through the pipe bundle to the target liquid low-temperature liquid outlet pipe from the target low-temperature liquid outlet and mixing the part of low-temperature target hot liquid with the high-temperature target hot liquid with the temperature exceeding the set temperature so as to adjust the temperature of the mixed target hot liquid to the set output temperature, so that the target equipment can safely and stably operate.
And a flow transmitter and a pressure transmitter which are electrically connected with the PLC control cabinet can be respectively arranged on the medium liquid inlet pipe, the target liquid circulating pipe, the target liquid high-temperature liquid outlet pipe, the target liquid low-temperature liquid outlet pipe and the target liquid outlet pipe, and are used for detecting the liquid flow and the pressure in each pipeline and ensuring that the liquid in the pipelines can be safely conveyed.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (7)
1. The utility model provides an intelligence accuse temperature type energy-efficient heat exchanger, includes shell and tube structure's heat exchanger body, and the PLC switch board of being connected with heat exchanger body electricity, its characterized in that: the front end and the rear end of the heat exchanger body are respectively provided with a medium hot liquid inlet connected with a medium liquid inlet pipe flange and a medium cold liquid outlet connected with a medium liquid outlet pipe flange; the upper end of the heat exchanger body is provided with a target cold liquid inlet connected with a target liquid inlet pipe flange and a target liquid circulation inlet connected with a target liquid circulation pipe flange; the lower end of the heat exchanger body is provided with a target high-temperature liquid outlet connected with a target liquid high-temperature liquid outlet pipe flange and a target low-temperature liquid outlet connected with a target liquid low-temperature liquid outlet pipe flange; the target liquid high-temperature liquid outlet pipe and the target liquid low-temperature liquid outlet pipe are respectively connected with the target liquid outlet pipe through a three-way joint; a liquid outlet switch valve is arranged on the target liquid outlet pipe;
a three-way valve is arranged on the target liquid high-temperature liquid outlet pipe; one end of the target liquid circulating pipe, which is far away from the target liquid circulating inlet, is connected to the other outlet of the three-way valve through the variable-frequency circulating pump; a first flow regulating valve is arranged on the target liquid low-temperature liquid outlet pipe; the first flow regulating valve, the frequency converter of the variable frequency circulating pump, the three-way valve and the liquid outlet switch valve are respectively and electrically connected with the PLC control cabinet;
a first temperature transmitter, a second temperature transmitter and a third temperature transmitter for detecting the temperature of the target liquid are respectively arranged on the target liquid high-temperature liquid outlet pipe, the target liquid low-temperature liquid outlet pipe and the target liquid outlet pipe; and the first temperature transmitter, the second temperature transmitter and the third temperature transmitter are respectively in electric control connection with the PLC control cabinet.
2. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1, characterized in that: a second flow regulating valve is arranged on the medium liquid inlet pipe; and the second flow regulating valve is electrically connected with the PLC control cabinet.
3. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1 or 2, characterized in that: the PLC control cabinet consists of a PLC controller and a minimum control unit thereof.
4. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1, characterized in that: the target cold liquid inlet and the target liquid circulation inlet are arranged above the heat exchanger body in a staggered manner from front to back; the target cold liquid inlet is arranged at one side close to the medium cold liquid outlet; the target liquid circulation inlet is arranged at one side close to the medium hot liquid inlet.
5. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1, characterized in that: the target high-temperature liquid outlet and the target low-temperature liquid outlet are arranged below the heat exchanger body in a staggered manner from front to back; the target high-temperature liquid outlet is arranged at one side close to the medium hot liquid inlet; the target low-temperature liquid outlet is arranged at one side close to the medium cold liquid outlet.
6. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1, characterized in that: the target cold liquid inlet and the target low-temperature liquid outlet are arranged in a vertically staggered manner; the target high-temperature liquid outlet and the target liquid circulation inlet are arranged in a vertically staggered mode.
7. The intelligent temperature-control type efficient energy-saving heat exchanger according to claim 1, characterized in that: and the liquid crystal display screen is electrically connected with the PLC controller of the PLC control cabinet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922481749.3U CN211425153U (en) | 2019-12-31 | 2019-12-31 | Intelligent temperature-control type efficient energy-saving heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922481749.3U CN211425153U (en) | 2019-12-31 | 2019-12-31 | Intelligent temperature-control type efficient energy-saving heat exchanger |
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| CN211425153U true CN211425153U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781430A (en) * | 2020-12-31 | 2021-05-11 | 中国石油集团工程股份有限公司 | Method for controlling heat exchanger, storage medium and electronic device |
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2019
- 2019-12-31 CN CN201922481749.3U patent/CN211425153U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781430A (en) * | 2020-12-31 | 2021-05-11 | 中国石油集团工程股份有限公司 | Method for controlling heat exchanger, storage medium and electronic device |
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