CN214307404U - Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences - Google Patents
Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences Download PDFInfo
- Publication number
- CN214307404U CN214307404U CN202120310472.2U CN202120310472U CN214307404U CN 214307404 U CN214307404 U CN 214307404U CN 202120310472 U CN202120310472 U CN 202120310472U CN 214307404 U CN214307404 U CN 214307404U
- Authority
- CN
- China
- Prior art keywords
- temperature
- water
- different
- temperature sensor
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Temperature (AREA)
Abstract
The utility model discloses a most energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences, which comprises a circulating pipeline; a plurality of cooling towers which are connected in parallel on the circulating pipeline; the variable frequency water pumps are connected in parallel on the circulating pipeline; a plurality of heat exchange devices connected in parallel on the circulating pipeline; a first temperature sensor for detecting a temperature of the supplied water; the second temperature sensor is used for detecting the return water temperature; the third temperature sensor is used for detecting the temperature of the heat exchange equipment in the sensitive area; the variable frequency water pump, the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected with the controller. The invention provides an industrial circulating water conveying technology which can select different temperature differences according to different water supply temperatures to control the operating frequency of a water pump, so that the change of output flow reaches continuous dynamic balance.
Description
Technical Field
The utility model relates to an industry or commercial recirculated cooling water technical field, concretely relates to different water supply temperature select different difference in temperature most energy-conserving industrial circulation water control system.
Background
In the circulating cooling water for industrial production of chemical industry, steel, power generation and the like, the circulating cooling water is in open circulation, the cooling water is greatly influenced by the external environment, the temperature difference in each season in one year is very large, even the temperature difference between day and night is very large within one day, the water supply temperature can reach about 33 ℃ when the temperature is highest in summer, and the water supply temperature can be as low as about ten degrees when the temperature is lowest in winter. In the same production load, the effect of heat exchange is greatly different because the supply water temperature is different, and thus the amount of cooling water required on site is different.
On-the-spot circulating water equipment is opened the back and is generally all constant voltage or constant current operation, and after the water supply temperature is low to the uniform temperature, heat exchange efficiency increased, the enterprise generally all can select the manual work to close one or two cooling water pump, reaches the purpose that reduces the flow, for example: 4 circulating water pumps are needed to be started in the period of 4-10 months, and one or two pumps are closed to reduce the flow in the period of 11 months-the next year and 3 months. However, when 2-3-4 stations are opened, the flow rate change is in a step mode rather than a continuous mode, and therefore continuous conveying control cannot be achieved through the flow rate.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The invention provides an industrial circulating water conveying technology which can select different temperature differences according to different water supply temperatures to control the operating frequency of a water pump, so that the change of output flow reaches continuous dynamic balance.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
the industrial circulating water control system which can select different temperature differences for different water supply temperatures and is most energy-saving comprises a circulating pipeline; a plurality of cooling towers which are connected in parallel on the circulating pipeline; the variable frequency water pumps are connected in parallel on the circulating pipeline; a plurality of heat exchange devices connected in parallel on the circulating pipeline; a first temperature sensor for detecting a temperature of the supplied water; the second temperature sensor is used for detecting the return water temperature; the third temperature sensor is used for detecting the temperature of the heat exchange equipment in the sensitive area; the variable frequency water pump, the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected with the controller.
Optionally, the water supply system further comprises a pressure sensor for detecting the pressure at the tail end of the water supply, and the pressure sensor is electrically connected with the controller.
Optionally, the water circulation system further comprises a flow sensor for detecting the flow of the circulating water in the circulation pipeline, and the flow sensor is electrically connected with the controller.
Optionally, the heat exchange equipment is a heat exchanger or a reaction kettle.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses an intelligent control has solved and can be according to different water supply temperature, selects different confession return water difference in temperature, realizes the continuity transport control of flow, not only can realize the dynamic balance of the required cooling water yield in scene, and through the real-time intelligent control to the water pump, still practice thrift a large amount of electric powers moreover.
Drawings
Fig. 1 is a schematic structural diagram of an industrial circulating water control system which selects different temperature differences for most energy-saving with different water supply temperatures according to an embodiment of the present invention.
1. A circulation line; 2. a cooling tower; 3. a variable frequency water pump; 4. heat exchange equipment; 5. a first temperature sensor; 6. a second temperature sensor; 7. a third temperature sensor; 8. a pressure sensor; 9. a flow sensor.
Detailed Description
For further understanding of the present invention, the present invention will be described in detail with reference to the accompanying drawings 1 and the embodiments.
With reference to fig. 1, the most energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences according to the present embodiment includes a circulating pipeline 1; a plurality of cooling towers 2 connected in parallel to the circulation pipeline 1; the variable frequency water pumps 3 are connected in parallel on the circulating pipeline 1; the heat exchange devices 4 are connected in parallel on the circulating pipeline 1; the cooling towers 2, the variable frequency water pumps 3 and the heat exchange devices 4 are sequentially arranged along the path of the circulating pipeline 1, the variable frequency water pumps 3 are used for controlling circulating cooling water to enter the cooling towers 2, and the heat exchange devices 4 are used for carrying out heat exchange and temperature reduction on the circulating cooling water from the cooling towers 2 for recycling; the first temperature sensor 5 is used for detecting the temperature of supplied water, and the first temperature sensor 5 is arranged on a pipeline between the heat exchange equipment 4 and the variable-frequency water pump 3; the second temperature sensor 6 is used for detecting the temperature of return water, and the second temperature sensor 6 is arranged on a pipeline between the cooling tower 2 and the heat exchange equipment 4; the third temperature sensor 7 is used for detecting the temperature of the heat exchange device 4, the third temperature sensor 7 is only arranged on the heat exchange device 4 which is most sensitive to the change of the water temperature (namely the heat exchange device 4 in the sensitive area), and the adjustment of the temperature difference is stopped as long as the temperature of the heat exchange device 4 reaches the limit value; the variable frequency water pump 3, the first temperature sensor 5, the second temperature sensor 6 and the third temperature sensor 7 are all electrically connected with the controller.
In this embodiment, the heat exchange device 4 is a heat exchanger or a reaction kettle.
The working principle of the most energy-saving industrial circulating water control system with different water supply temperatures by selecting different temperature differences is as follows: the method comprises the steps that a first temperature sensor 5 obtains real-time water supply temperature, a second temperature sensor 6 obtains real-time water return temperature, a third temperature sensor 7 obtains real-time temperature of the heat exchange equipment 4 in the sensitive area, the running frequency of a water pump is continuously adjusted down under the condition that the water supply temperature is kept unchanged, the water return temperature is increased until the temperature of the heat exchange equipment 4 in the sensitive area rises to a limit value, frequency adjustment is stopped, and the water supply temperature, the water supply and return temperature difference and the running frequency of the water pump at the moment are used as standard values of the water supply temperature and are uploaded to a controller so as to be directly called next time.
According to the formula Q ═ C × L (T1-T2), Q: producing the required cold quantity; l: circulating water flow rate; c: the specific heat capacity of water; t1: the return water temperature; t2: the temperature of the supplied water; it can be known that under the condition of unchanging cold quantity required by production, the circulating water flow and the temperature difference of supply and return water are in inverse proportion, the circulating water flow is in direct proportion to the running frequency of water pump, when the load required by production is unchanging, the flow can be reduced by enlarging the temperature difference, and the energy-saving effect can be achieved by establishing dynamic balance, and the running frequency of water pump can be controlled by selecting different temperature differences under different water supply temperatures and recording different water supply temperatures in real time, so that the output flow change can reach continuous dynamic balance, and the energy-saving purpose can be achieved by variable flow control, and the problem of selecting different temperature differences of supply and return water according to different water supply temperatures by intelligent control can be solved, so as to implement continuous conveying control of flow, not only the dynamic balance of cooling water quantity required on site, but also by real-time intelligent control of water pump, a large amount of power is also saved.
As the utility model discloses an alternative still includes the pressure sensor 8 that is used for detecting the terminal pressure of water supply, pressure sensor 8 installs on the pipeline between indirect heating equipment 4 and frequency conversion water pump 3, also can directly install in indirect heating equipment 4's play water end, pressure sensor 8 is connected with the controller electricity, because the flow is lower, terminal water supply pressure is less, and when water supply temperature is minimum, required flow is also minimum, and at the in-process of adjusting the temperature difference modeling, terminal pressure can be lower and lower, and pressure sensor 8 is used for guaranteeing to adjust the in-process of difference in temperature, and water supply terminal pressure need not be less than the safe value.
As the utility model discloses an alternative still includes the flow sensor 9 that is used for detecting circulation pipeline 1 inner loop discharge, flow sensor 9 installs on the pipeline between cooling tower 2 and indirect heating equipment 4 for detect from the 2 flow sizes of flow direction to indirect heating equipment 4 of cooling tower, flow sensor 9 is connected with the controller electricity, and flow sensor 9 judges through the flow, still can satisfy the circulation flow demand under the condition that reduces one or many water pump work, then the water pump of corresponding quantity of self-closing, compare control water pump operating frequency, close unnecessary water pump more energy saving, the water pump operation number of calculating also can be synchronous upload the database and do subsequent control data use.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (4)
1. Different water supply temperature select different difference in temperature most energy-conserving industrial circulating water control system, its characterized in that: comprises that
A circulation line;
a plurality of cooling towers which are connected in parallel on the circulating pipeline;
the variable frequency water pumps are connected in parallel on the circulating pipeline;
a plurality of heat exchange devices connected in parallel on the circulating pipeline;
a first temperature sensor for detecting a temperature of the supplied water;
the second temperature sensor is used for detecting the return water temperature;
the third temperature sensor is used for detecting the temperature of the heat exchange equipment in the sensitive area;
the variable frequency water pump, the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected with the controller.
2. The system of claim 1, wherein the system is characterized in that the system is capable of selecting different temperature differences according to different water supply temperatures to achieve the most energy-saving effect: the water supply system also comprises a pressure sensor for detecting the pressure at the tail end of the water supply, and the pressure sensor is electrically connected with the controller.
3. The system of claim 1, wherein the system is characterized in that the system is capable of selecting different temperature differences according to different water supply temperatures to achieve the most energy-saving effect: the water circulation system also comprises a flow sensor for detecting the flow of circulating water in the circulating pipeline, wherein the flow sensor is electrically connected with the controller.
4. The system of claim 1, wherein the system is characterized in that the system is capable of selecting different temperature differences according to different water supply temperatures to achieve the most energy-saving effect: the heat exchange equipment is a heat exchanger or a reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120310472.2U CN214307404U (en) | 2021-02-03 | 2021-02-03 | Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120310472.2U CN214307404U (en) | 2021-02-03 | 2021-02-03 | Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214307404U true CN214307404U (en) | 2021-09-28 |
Family
ID=77833009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120310472.2U Active CN214307404U (en) | 2021-02-03 | 2021-02-03 | Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214307404U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797526A (en) * | 2021-02-03 | 2021-05-14 | 蔚海建 | Energy-saving industrial circulating water conveying technology with different water supply temperatures and different temperature differences |
| CN114017863A (en) * | 2021-11-03 | 2022-02-08 | 科希曼电器有限公司 | Self-adaptive household constant water resistance air source heat pump system |
| CN114017862A (en) * | 2021-10-29 | 2022-02-08 | 江苏天纳节能科技股份有限公司 | Control method of air conditioner cooling water heat recovery system |
-
2021
- 2021-02-03 CN CN202120310472.2U patent/CN214307404U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797526A (en) * | 2021-02-03 | 2021-05-14 | 蔚海建 | Energy-saving industrial circulating water conveying technology with different water supply temperatures and different temperature differences |
| CN114017862A (en) * | 2021-10-29 | 2022-02-08 | 江苏天纳节能科技股份有限公司 | Control method of air conditioner cooling water heat recovery system |
| CN114017863A (en) * | 2021-11-03 | 2022-02-08 | 科希曼电器有限公司 | Self-adaptive household constant water resistance air source heat pump system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214307404U (en) | Energy-saving industrial circulating water control system with different water supply temperatures and different temperature differences | |
| WO2021232734A1 (en) | Adaptive optimization control method, system, and apparatus for heat pump and electric heat storage device | |
| CN112797526A (en) | Energy-saving industrial circulating water conveying technology with different water supply temperatures and different temperature differences | |
| CN202868819U (en) | Intelligent centralized heating system | |
| CN109185972B (en) | Heat station circulating pump optimization adjusting method | |
| CN203215856U (en) | Automatic control system of heat exchange station | |
| CN205119224U (en) | Hydraulic balance governing system when difference in temperature unsteady flow volume | |
| CN103807156A (en) | Circulating water energy-saving control operation system | |
| CN109268929A (en) | A kind of energy saving in heating system regulating system and method | |
| CN105402895A (en) | Intelligent energy-saving control method for air source heat pump water heater | |
| CN109654887A (en) | A kind of circulating water cooling system and its autocontrol method | |
| CN105862983B (en) | For carrying out the apparatus and method of frequency conversion Optimization of Energy Saving to circulation | |
| CN213777864U (en) | Flow distribution device of multi-element heat supply heat source | |
| CN203081721U (en) | Water pump energy-saving system | |
| CN202915464U (en) | Solar heating control system | |
| CN109974077B (en) | Intelligent hydraulic balance control system device adopting datum point tracking method | |
| CN204620659U (en) | Cooling recirculation system | |
| CN210952495U (en) | Heat exchanger | |
| CN209655821U (en) | A kind of circulating water cooling system | |
| CN111717553A (en) | Oil storage tank heating system | |
| CN218864302U (en) | Distributed clean low-carbon regional cooling and heating integrated device | |
| CN111049184A (en) | Calculation method for responding to wind power consumption demand of power system in multi-energy complementary park | |
| CN113531631B (en) | Thermodynamic station system utilizing residual pressure head of primary side water supply system and regulation and control method | |
| CN115540377A (en) | Carbon dioxide cold and hot combined supply module unit self-optimization control system | |
| CN209763213U (en) | Full-automatic intelligent steam-water heat exchange unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |