CN220303798U - Temperature control system based on waste heat recycling of RTO (room temperature operating) system - Google Patents
Temperature control system based on waste heat recycling of RTO (room temperature operating) system Download PDFInfo
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- CN220303798U CN220303798U CN202321751272.6U CN202321751272U CN220303798U CN 220303798 U CN220303798 U CN 220303798U CN 202321751272 U CN202321751272 U CN 202321751272U CN 220303798 U CN220303798 U CN 220303798U
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- control valve
- air conditioning
- conditioning system
- temperature
- hot water
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- 239000002918 waste heat Substances 0.000 title claims abstract description 18
- 238000004064 recycling Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 238000004378 air conditioning Methods 0.000 claims abstract description 49
- 239000008236 heating water Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 230000001276 controlling effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
The utility model relates to the technical field of temperature control, in particular to a temperature control system based on waste heat reutilization of an RTO system. In the utility model, water in the hot water tank is obtained by heating by waste heat of an RTO system; the input end of the air conditioning system is connected with the water outlet of the hot water tank, and the output end of the air conditioning system is connected with the water return port of the hot water tank; the first end of the branch is connected between the output end and the water return port, and the second end of the branch is connected between the input end and the water outlet; the first control valve is arranged between the water outlet and the second end; the second control valve adopts a three-way valve, and three valve ports are respectively communicated with the second end, the input end and the outlet of the first control valve; the third control valve is arranged between the water return port and the first end; the water outlet, the first control valve, the second control valve, the air conditioning system, the third control valve and the water return port form a large circulation; the first end, the second control valve and the air conditioning system form a small cycle. The utility model improves the stability of the heat supply temperature of the air conditioning system.
Description
Technical Field
The utility model relates to a temperature control technology, in particular to a temperature control system based on waste heat reutilization of an RTO system.
Background
A large amount of organic hot waste gas generated in the production process of some materials (such as copper-clad plates) is unfavorable for the environment, and RTO (regenerative thermal incinerator) systems are adopted for combustion at present, so that the flue gas is discharged after reaching the standard. In order to maximize the utilization of energy, the waste heat of the RTO is used for heating water in the prior art, for example, hot smoke and cold water generated in the RTO system are subjected to heat exchange in a heat exchanger, and the cold water is stored in a hot water tank after being heated. The obtained hot water can be further utilized as a heat source, fig. 1 illustrates a schematic diagram of a hot water tank for supplying heat to an air conditioning system, the top and the bottom of the hot water tank are respectively connected with the air conditioning system and form water circulation, the arrow direction in the figure is used for indicating the water circulation direction, the hot water flows out from the bottom of the hot water tank, the temperature is reduced after flowing through the air conditioning system, and then the hot water flows back into the hot water tank.
However, in practical application, besides the air conditioning system, the hot water in the hot water tank is also used as a heat source for other systems, and the temperature of the hot water in the hot water tank is under the combined action of the temperature control system and other systems, so that the requirements of the systems are not necessarily stable and controllable, and the temperature fluctuation of the air conditioning system is large.
Disclosure of Invention
In order to solve or at least partially solve the technical problems, the utility model provides a temperature control system based on the waste heat reutilization of an RTO system, which improves the temperature stability of an air conditioning system.
The present utility model solves the above problems by the following means.
A temperature control system based on RTO system waste heat reuse, comprising:
the hot water tank is used for heating water in the hot water tank through waste heat of the RTO system;
the input end of the air conditioning system is connected with the water outlet of the hot water tank, and the output end of the air conditioning system is connected with the water return port of the hot water tank;
the first end of the branch is connected between the output end and the water return port, and the second end of the branch is connected between the input end and the water outlet;
a first control valve disposed between the water outlet and the second end;
the second control valve adopts a three-way valve, and three valve ports are respectively communicated with the second end, the input end and the outlet of the first control valve;
the third control valve is arranged between the water return port and the first end;
wherein the water outlet, the first control valve, the second control valve, the air conditioning system, the third control valve and the water return port form a large circulation; the first end, the second control valve and the air conditioning system form a small cycle;
and a PID controller controlling the temperature of the air conditioning system by controlling the flow rates of the large cycle and the small cycle.
Optionally, the first control valve and the second control valve adopt electromagnetic valves.
Optionally, the second control valve adopts a pneumatic valve.
Optionally, the temperature control system comprises a temperature sensor for detecting the water temperature of the air conditioning system, and the PID controller is used for controlling the flow of the large cycle and the small cycle according to the temperature parameter fed back by the temperature sensor.
Optionally, the water outlet is located below the hot water tank, and the water return port is located above the hot water tank.
The beneficial effects of the utility model are as follows:
the temperature control system is arranged into a large cycle and a small cycle, when the large cycle operates, the hot water tank supplies heat to the air conditioning system, the air conditioning system is in a heating state, and when the small cycle operates independently, the air conditioning system supplies heat. The PID controller controls the flow of the large circulation and the small circulation, so that the temperature of the air conditioning system is kept within a preset range and is not fluctuated due to the change of the temperature of hot water in the hot water tank, and the stability of the temperature in the air conditioning system is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model, a brief description of the related drawings will be provided below. It is to be understood that the drawings described below are only for illustrating some embodiments of the present utility model, and that one of ordinary skill in the art can obtain many other technical features and connection relationships not mentioned herein from the drawings.
FIG. 1 is a schematic diagram of the principles of operation of an air conditioning system and hot water tank of the prior art;
FIG. 2 is a schematic diagram of a temperature control system based on RTO system waste heat reuse according to an embodiment of the present utility model, wherein arrows are used to indicate water flow direction.
Reference numerals illustrate:
1. a hot water tank; 11. a water outlet; 12. a water return port;
2. an air conditioning system; 21. an input end; 22. an output end;
3. a branch; 31. a first end; 32. a second end;
4. a first control valve;
5. a second control valve;
6. and a third control valve.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
As understood with reference to fig. 2. The utility model provides a temperature control system based on waste heat recycling of an RTO system, which comprises a hot water tank 1, an air conditioning system 2, a branch 3, a first control valve 4, a second control valve 5, a third control valve 6 and a PID controller.
Wherein the water in the hot water tank 1 is obtained by heating by the waste heat of the RTO system, for example, hot smoke of the RTO system and cold water from a tap water pipe are subjected to heat exchange at an exchanger, the cold water is heated and conveyed into the hot water tank 1, and an inlet and an outlet connected with the exchanger are arranged on the hot water tank 1 so as to form a water circulation for continuously heating the hot water tank 1 by the RTO system.
The hot water tank 1 is provided with a water outlet 11 and a water return port 12, and the water outlet 11 is positioned below and is used for providing hot water for a load; the return water port 12 is located above for recovering water having a reduced temperature after passing through the load. The hot water tank 1 can be connected with a plurality of loads, and forms a circulating water path with each load so as to exchange heat with the load, thereby realizing full utilization of energy.
The air conditioning system 2 is a load of the hot water tank 1, the input end 21 of the air conditioning system 2 is connected with the water outlet 11 of the hot water tank 1, and the output end 22 of the air conditioning system 2 is connected with the water return port 12 of the hot water tank 1. The first end 31 of the branch 3 is connected between the output end 22 and the water return port 12, and the second end 32 of the branch 3 is connected between the input end 21 and the water outlet 11. The first control valve 4 is arranged between the water outlet 11 and the second end 32 and is used for controlling the on-off between the water outlet 11 and the second end, and the first control valve 4 adopts an electromagnetic valve. The second control valve 5 is a pneumatic three-way valve, and three valve ports of the second control valve 5 are respectively communicated with the second end 32, the input end 21 and the outlet of the first control valve 4, and are used for controlling the flow of the water outlet 11 to the input end 21 and the flow of the second end 32 to the input end 21, namely, controlling the flow of large circulation and small circulation, so as to regulate the water temperature at the input end 21. The third control valve 6 is arranged between the water return port 12 and the first end 31 and is used for controlling the on-off between the water return port 12 and the first end 31.
The first control valve 4 and the third control valve 6 are connected, the outlet and the input end 21 of the first control valve 4 are connected through the second control valve 5, after the branch 3 and the input end 21 are disconnected, water in the hot water tank 1 sequentially passes through the water outlet 11, the first control valve 4, the second control valve 5, the air conditioning system 2, the third control valve 6 and the water return port 12 to return to the hot water tank 1, so that a large circulation is formed. The second end 32 and the input 21 form a small loop when they are connected via the second control valve 5, the second end 32, the second control valve 5, the air conditioning system 2 and the first end 31. The large cycle and the small cycle may be operated separately or together, and the PID controller controls the temperature of the air conditioning system 2 by controlling the large cycle and the small cycle.
When the large circulation is running, the hot water tank 1 continuously supplies heat to the air conditioning system 2, the air conditioning system 2 is in a heating state, when the small circulation is running alone, the hot water tank 1 does not supply water to the air conditioning system 2 any more, the water in the air conditioning system 2 and the branch 3 forms the small circulation, and the air conditioning system 2 is in a slow cooling state due to the fact that a heat source is not arranged. During application, a high temperature threshold and a low temperature threshold can be set, when the heating temperature of the air conditioning system 2 is detected to reach the high temperature threshold in a large circulation state, the PID controller sends instructions to the first control valve 4 and the second control valve 5, the water outlet 11 of the hot water tank 1 is closed through the first control valve 4, the temperature control system is switched from the large circulation to the small circulation, the flow of the small circulation is regulated through the second control valve 5, and the cooling speed is controlled. In the small circulation state, when the temperature of the air conditioning system 2 is lower than the low temperature threshold value, the PID controller sends instructions to the first control valve 4 and the second control valve 5, the water outlet 11 of the hot water tank 1 is opened, and the temperature control system is switched from the small circulation to the large circulation or is switched to a state that the large circulation and the small circulation operate together. In addition, the main cycle and the sub-cycle may be simultaneously operated to implement a constant temperature control, for example, the PID controller controls the first control valve 4, the second control valve 5, and the third control valve 6 to simultaneously operate the main cycle and the sub-cycle, and at the same time, the PID controller controls the second control valve 5 according to the water temperature of the input end 21 or the water temperature of the output end 22, thereby adjusting the flow rates of the main cycle and the sub-cycle, and further making the heating temperature of the air conditioning system 2 be in a constant temperature state.
The temperature control system comprises a temperature sensor arranged at an input end 21 or an output end 22, and a PID controller is used for controlling the large circulation and the small circulation according to temperature parameters fed back by the temperature sensor. During constant temperature control, the temperature value detected by the temperature sensor is transmitted to the PID controller, the PID controller analyzes and calculates the temperature value, and a corresponding instruction is sent to the second control valve 5 according to the analysis result.
In the utility model, a large circulation and a small circulation are arranged between a hot water tank 1 and an air conditioning system 2, and the on-off and flow of the large circulation and the small circulation are regulated by utilizing a PID controller, so that the control of the heating temperature of the air conditioning system is realized; when the water temperature in the hot water tank 1 fluctuates due to unstable other load demands of the hot water tank 1, the water temperature detected by the temperature sensor changes accordingly, and the PID controller adjusts the large cycle and the small cycle in real time according to the data detected by the temperature sensor, so that the heating temperature of the air conditioning system 2 is quickly adjusted. In other words, in the present utility model, the temperature of the air conditioning system 2 fluctuates without the load demand of the hot water tank 1 changing.
Finally, it should be noted that those skilled in the art will understand that many technical details are set forth in order to provide a better understanding of the present utility model. However, the technical solutions claimed in the claims of the present utility model can be basically implemented without these technical details and various changes and modifications based on the above embodiments. Accordingly, in actual practice, various changes may be made in the form and details of the above-described embodiments without departing from the spirit and scope of the utility model.
Claims (5)
1. Temperature control system based on waste heat reuse of RTO system, characterized by, include:
the hot water tank is used for heating water in the hot water tank through waste heat of the RTO system;
the input end of the air conditioning system is connected with the water outlet of the hot water tank, and the output end of the air conditioning system is connected with the water return port of the hot water tank;
the first end of the branch is connected between the output end and the water return port, and the second end of the branch is connected between the input end and the water outlet;
a first control valve disposed between the water outlet and the second end;
the second control valve adopts a three-way valve, and three valve ports are respectively communicated with the second end, the input end and the outlet of the first control valve;
the third control valve is arranged between the water return port and the first end;
wherein the water outlet, the first control valve, the second control valve, the air conditioning system, the third control valve and the water return port form a large circulation; the first end, the second control valve and the air conditioning system form a small cycle;
and a PID controller controlling the temperature of the air conditioning system by controlling the flow rates of the large cycle and the small cycle.
2. The RTO system waste heat reuse based temperature control system of claim 1, wherein the first control valve and the second control valve employ solenoid valves.
3. The RTO system waste heat reuse based temperature control system of claim 1, wherein the second control valve is a pneumatic valve.
4. The RTO system waste heat reuse based temperature control system of claim 1, wherein the temperature control system comprises a temperature sensor for detecting a water temperature of the air conditioning system, and the PID controller is configured to control a flow rate of the large cycle and the small cycle according to a temperature parameter fed back by the temperature sensor.
5. The RTO system waste heat reuse based temperature control system according to any one of claims 1-4, wherein the water outlet is located below the hot water tank and the water return port is located above the hot water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321751272.6U CN220303798U (en) | 2023-07-05 | 2023-07-05 | Temperature control system based on waste heat recycling of RTO (room temperature operating) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321751272.6U CN220303798U (en) | 2023-07-05 | 2023-07-05 | Temperature control system based on waste heat recycling of RTO (room temperature operating) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220303798U true CN220303798U (en) | 2024-01-05 |
Family
ID=89348579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321751272.6U Active CN220303798U (en) | 2023-07-05 | 2023-07-05 | Temperature control system based on waste heat recycling of RTO (room temperature operating) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220303798U (en) |
-
2023
- 2023-07-05 CN CN202321751272.6U patent/CN220303798U/en active Active
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