Intelligent water mixing heat supply unit control system

Abstract

The utility model relates to an intelligent water mixing heat supply unit control system. The intelligent water mixing heat supply unit control system comprises a PLC, a frequency converter primary side water supply pipe, a primary side water return pipe, a high-area secondary side water supply pipe, a high-area secondary side water return pipe, a low-area secondary side water supply pipe and a low-area secondary side water return and water mixer. By integrating equipment such as the PLC, the sensor, the water mixer, the circulating pump set and the electric valve, comprehensive monitoring and accurate control over the heat supply process are achieved, the intelligent level of the heat supply system is greatly improved, heat supply management is more convenient and efficient, the system can automatically adjust the water supply temperature and flow according to actual requirements and conditions, and the heat supply efficiency is improved. The system ensures the stability and reliability of heat supply quality, not only improves the comfort level of users, but also avoids energy waste caused by insufficient or excessive heat supply, has the characteristics of low construction investment, no heat exchanger and no need of water supplementation on the whole, has large energy-saving potential, fully utilizes high-area static pressure to do work, is provided with a variable-frequency water pump, automatically adjusts water temperature, and is obvious in power saving.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed water heating, in particular to an intelligent mixed water heating unit control system. Background Art

[0002] With the rapid development of urbanization and the continuous improvement of people's living standards, the heating industry, as an important part of urban infrastructure, has received increasing attention for its technological evolution and intelligent upgrading. Traditional heating systems mainly rely on manual operation and simple control systems, with problems such as low efficiency, high energy consumption, and slow response speed. They can no longer meet the dual needs of modern cities for heating quality and energy conservation and environmental protection.

[0003] In recent years, with the widespread application of high-tech technologies such as automation control, sensor technology, and PLC wireless communication technology in the heating industry, heating systems have gradually begun to realize intelligent control. As a typical representative of these, the intelligent water mixing temperature control system achieves precise control of the heating process by real-time monitoring and adjustment of parameters such as water supply temperature, flow rate, and pressure.

[0004] Therefore, the present invention aims to develop a new intelligent water mixing heating unit control system, which realizes comprehensive intelligent management and control of the heating system by integrating advanced automation control, sensor technology, PLC wireless communication technology, etc. The system not only has high stability and data processing capabilities, but also can realize more accurate and flexible heating control, thereby improving heating efficiency, reducing energy consumption, and enhancing user experience. Utility Model Content

[0005] In order to solve the problems of the prior art, the utility model provides an intelligent water mixing heating unit control system.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions: an intelligent water mixing heating unit control system, including a PLC controller, a frequency converter primary water supply pipe, a primary water return pipe, a high zone secondary water supply pipe, a high zone secondary water return pipe, a low zone secondary water supply pipe, a low zone secondary water return and a water mixer, the water mixer is provided with four output ends, one of the output ends is fixedly connected to the primary water supply pipe, one of the output ends is fixedly connected to the high zone secondary water return, one of the output ends is fixedly connected to the primary water return pipe and the low zone secondary water return pipe at the same time, one of the output ends is fixedly connected to the high zone secondary water supply pipe and the high zone secondary water return pipe respectively through a pressure transmitter and a temperature transmitter, one end of the high zone secondary water supply pipe and the high zone secondary water return pipe is fixedly connected to the high zone, and a through connection is made through the high zone, and one end of the low zone secondary water supply pipe and the low zone secondary water return pipe is fixedly connected to the low zone, and a through connection is made through the low zone;

[0007] A check valve, a No. 1 circulating pump group and a No. 2 circulating pump group are fixedly connected inside the secondary water supply pipe of the high zone, and the check valve, the No. 1 circulating pump group and the No. 2 circulating pump group are connected in parallel. A check valve, a No. 3 circulating pump group and a No. 4 circulating pump group are fixedly connected inside the secondary water supply pipe of the low zone, and the check valve, the No. 3 circulating pump group and the No. 4 circulating pump group are connected in parallel. The number of the frequency converters is set to two, one of which electrically controls the No. 1 circulating pump group and the No. 2 circulating pump group, and the other frequency converter electrically controls the No. 3 circulating pump group and the No. 4 circulating pump group. The frequency converter is electrically connected to a PLC controller, and the input end of the PLC controller is electrically connected to an input module, and the output end is electrically connected to an output module.

[0008] Preferably, a manual valve, a p11 pressure transmitter, a t11 temperature transmitter, a decontaminator, a p10 pressure transmitter, an m1 electric valve, and a second actuator are fixedly connected in sequence inside the primary-side water supply pipe, and the m1 electric valve is connected in parallel with the manual valve.

[0009] Preferably, the primary side return pipe is equipped with an F flow meter, a manual valve, a P12 pressure transmitter, a T12 temperature transmitter, and an M2 electric valve in sequence.

[0010] Preferably, a manual valve is fixedly connected to the interior of the secondary side water supply pipe of the high zone, and the manual valve is located on one side of the No. 1 circulating pump group. An M3 electric valve, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flow meter, and a manual valve are fixedly connected to the interior of the secondary side water supply pipe of the high zone, and the manual valve is located on the other side of the No. 1 circulating pump group. One end of the M3 electric valve is fixedly connected to a pressure relief pipe.

[0011] The No. 1 circulation pump group is composed of a manual valve, a No. 1 circulation pump, a check valve and a manual valve, and the No. 2 circulation pump is composed of a manual valve, a No. 2 circulation pump, a check valve and a manual valve.

[0012] Preferably, a manual valve is fixedly connected to the interior of the secondary side water supply pipe of the low zone, and the manual valve is located on one side of the No. 3 circulating pump group. A p23 pressure transmitter, a t23 temperature transmitter, an f2 flow meter and a manual valve are fixedly connected to the interior of the secondary side water supply pipe of the low zone, and are located on the other side of the No. 3 circulating pump group.

[0013] The No. 3 circulation pump group is composed of a manual valve, a No. 3 circulation pump, a check valve, and a manual valve. The No. 4 circulation pump group is composed of a manual valve, a No. 4 circulation pump, a check valve, and a manual valve.

[0014] Preferably, the interior of the secondary side return water pipe of the high zone is fixedly connected with a T22 temperature transmitter, a P22 pressure transmitter, a decontaminator, a P24 pressure transmitter and a manual valve in sequence.

[0015] Preferably, the interior of the secondary side return water pipe of the low zone is sequentially connected with an angle valve, a t26 temperature transmitter, a decontaminator, a p26 pressure transmitter and a manual valve.

[0016] Preferably, the input module includes a P11 pressure transmitter, a T11 temperature transmitter, a P10 pressure transmitter, a P12 pressure transmitter, a T12 temperature transmitter, an F flowmeter, a P22 pressure transmitter, a T22 temperature transmitter, a P20 pressure transmitter, a T20 temperature transmitter, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flowmeter, a P23 pressure transmitter, a T23 temperature transmitter, an F2 flowmeter, a P24 pressure transmitter, a T26 temperature transmitter, and a P26 pressure transmitter;

[0017] The output module includes an m1 electric valve, an m2 electric valve, an m3 electric valve, a water mixer, a No. 1 circulation pump, a No. 2 circulation pump, a No. 3 circulation pump and a No. 4 circulation pump.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model realizes comprehensive monitoring and precise control of the heating process by integrating PLC controllers, sensors, water mixers, circulating pump groups, electric valves and other equipment. This greatly improves the intelligence level of the heating system, making heating management more convenient and efficient. The system can automatically adjust the water supply temperature and flow rate according to actual needs and conditions to ensure the stability and reliability of the heating quality. This can not only improve the user's comfort, but also avoid energy waste caused by insufficient or excessive heating. The overall construction investment is small, there is no heat exchanger, no need for water replenishment, and the energy-saving potential is large. It fully utilizes the high-zone static pressure to do work, is equipped with a variable frequency water pump, and the water temperature is automatically adjusted. The power saving is obvious, the control is advanced, unattended, stable operation, and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall process system of the utility model.

[0021] Figure 2 It is a schematic diagram of the electrical system of the utility model.

[0022] Figure 3 It is a schematic diagram of a pipeline connection system of the utility model.

[0023] Figure 4 It is a primary system circuit connection schematic diagram of the utility model.

[0024] Figure 5 It is a schematic diagram of the primary system circuit connection of the power cabinet of the utility model.

[0025] Figure 6It is a schematic diagram of the secondary circuit connection of the power cabinet of the utility model.

[0026] Figure 7 It is a connection diagram of the power distribution system of the control cabinet of the utility model. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-7 An intelligent water mixing heating unit control system shown includes a PLC controller, a primary water supply pipe of a frequency converter, a primary water return pipe, a high zone secondary water supply pipe, a high zone secondary water return pipe, a low zone secondary water supply pipe, a low zone secondary water return and a water mixer, wherein the water mixer is provided with four output ends, one of which is fixedly connected to the primary water supply pipe, one of which is fixedly connected to the high zone secondary water return, one of which is fixedly connected to the primary water return pipe and the low zone secondary water return pipe at the same time, one of which is fixedly connected to the high zone secondary water supply pipe and the high zone secondary water return pipe at the same time through a pressure transmitter and a temperature transmitter, one end of the high zone secondary water supply pipe and the high zone secondary water return pipe is fixedly connected to the high zone, and a through connection is made through the high zone, and one end of the low zone secondary water supply pipe and the low zone secondary water return pipe is fixedly connected to the low zone, and a through connection is made through the low zone;

[0029] A check valve, a No. 1 circulating pump group and a No. 2 circulating pump group are fixedly connected inside the secondary water supply pipe of the high zone, and the check valve, the No. 1 circulating pump group and the No. 2 circulating pump group are connected in parallel. A check valve, a No. 3 circulating pump group and a No. 4 circulating pump group are fixedly connected inside the secondary water supply pipe of the low zone, and the check valve, the No. 3 circulating pump group and the No. 4 circulating pump group are connected in parallel. The number of the frequency converters is set to two, one of which electrically controls the No. 1 circulating pump group and the No. 2 circulating pump group, and the other frequency converter electrically controls the No. 3 circulating pump group and the No. 4 circulating pump group. The frequency converter is electrically connected to a PLC controller, and the input end of the PLC controller is electrically connected to an input module, and the output end is electrically connected to an output module.

[0030] When in use, the system mainly uses the PLC controller to realize intelligent monitoring and control of the heating process. As the core of the system, the PLC controller is responsible for receiving and processing data from various sensors, and outputting control signals to adjust the operating status of related equipment according to the preset control logic and algorithm.

[0031] In the primary water supply pipe and return pipe, multiple pressure transmitters and temperature transmitters are installed to monitor the pressure and temperature of the supply and return water in real time. These sensors transmit the collected data to the PLC controller, which automatically adjusts the water supply temperature and flow rate based on these data.

[0032] Circulation pumps and electric valves are installed in the secondary water supply pipes of the high and low zones. The frequency converter is responsible for the electrical control of the circulation pumps, and by adjusting the speed of the pumps, the water supply flow and pressure can be precisely controlled. The electric valves automatically adjust the valve opening according to the instructions of the PLC controller, and further adjust the water supply flow.

[0033] As a key component of the system, the water mixer is responsible for mixing the primary water supply and the secondary return water of the high or low zone to meet the heating needs of different areas. The output end of the water mixer is connected to the water supply pipe, and the flow and temperature of the output end are adjusted to achieve precise control of the heating quality.

[0034] In addition, the system also has fault detection and alarm functions. When the sensor detects abnormal data or equipment failure, the PLC controller will promptly send out an alarm signal to notify the operator to handle it.

[0035] In summary, the intelligent water mixing heating unit control system realizes comprehensive monitoring and precise control of the heating process by integrating PLC controllers, frequency converters, sensors, water mixers and other equipment, thereby improving heating efficiency and quality and reducing energy consumption and operating costs.

[0036] A manual valve, a P11 pressure transmitter, a T11 temperature transmitter, a decontaminator, a P10 pressure transmitter, an M1 electric valve, and a second actuator are fixedly connected in sequence inside the primary-side water supply pipe. The M1 electric valve is connected in parallel with the manual valve. A flow meter, a manual valve, a P12 pressure transmitter, a T12 temperature transmitter, and an M2 electric valve are fixedly connected in sequence inside the primary-side return pipe.

[0037] Preferably, a manual valve is fixedly connected to the interior of the secondary side water supply pipe of the high zone, and the manual valve is located on one side of the No. 1 circulating pump group. An M3 electric valve, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flow meter, and a manual valve are fixedly connected to the interior of the secondary side water supply pipe of the high zone, and are located on the other side of the No. 1 circulating pump group. One end of the M3 electric valve is fixedly connected to a pressure relief pipe. The No. 1 circulating pump group consists of a manual valve, a No. 1 circulating pump, a check valve and a manual valve. The No. 2 circulating pump consists of a manual valve, a No. 2 circulating pump, a check valve and a manual valve. The interior of the secondary side water supply pipe of the low zone is also fixedly connected to a manual valve, and the manual valve is located on the No. 3 circulating pump group. On one side, the interior of the secondary side water supply pipe of the low zone is also fixedly connected with a P23 pressure transmitter, a T23 temperature transmitter, an F2 flowmeter and a manual valve, which is located on the other side of the No. 3 circulation pump group. The No. 3 circulation pump group is composed of a manual valve, a No. 3 circulation pump, a check valve and a manual valve. The No. 4 circulation pump group is composed of a manual valve, a No. 4 circulation pump, a check valve and a manual valve. The interior of the secondary side return pipe of the high zone is fixedly connected with a T22 temperature transmitter, a P22 pressure transmitter, a decontaminator, a P24 pressure transmitter and a manual valve in sequence. The interior of the secondary side return pipe of the low zone is hung with an angle valve, a T26 temperature transmitter, a decontaminator, a P26 pressure transmitter and a manual valve in sequence.

[0038] Preferably, the input module includes a P11 pressure transmitter, a T11 temperature transmitter, a P10 pressure transmitter, a P12 pressure transmitter, a T12 temperature transmitter, an F flowmeter, a P22 pressure transmitter, a T22 temperature transmitter, a P20 pressure transmitter, a T20 temperature transmitter, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flowmeter, a P23 pressure transmitter, a T23 temperature transmitter, an F2 flowmeter, a P24 pressure transmitter, a T26 temperature transmitter, and a P26 pressure transmitter; the output module includes an M1 electric valve, an M2 electric valve, an M3 electric valve, a water mixer, a No. 1 circulating pump, a No. 2 circulating pump, a No. 3 circulating pump, and a No. 4 circulating pump.

[0039] In summary, the utility model has the following working principle: the whole system is based on PLC controller for centralized control and intelligent management. PLC controller receives data from various sensors in real time by connecting with input module, including key parameters such as pressure, temperature, flow rate, etc. These data are important basis for system decision-making and control.

[0040] When the system starts running, the PLC controller will analyze and process the received data according to the preset control logic and algorithm. Based on the analysis results, the PLC controller will send control signals to the output module to adjust the working status of key equipment such as the mixer, circulation pump group and electric valve.

[0041] The working principle of the water mixer is based on the flow and mixing of liquids in a closed system. The water flow in the primary water supply pipe and the secondary return pipe of the high zone or low zone passes through the control valve and rotating device (such as rotating nozzle or rotating mixer) of the water mixer to achieve the mixing of two or more water flows. During the rotation process, the molecules in the water flow collide with each other and mix evenly, so as to achieve the required water supply temperature and flow rate.

[0042] The circulating pump group is electrically controlled by a frequency converter. The frequency converter changes the output frequency and voltage according to the instructions of the PLC controller, thereby adjusting the speed of the circulating pump group. By accurately controlling the speed of the pump group, the water supply flow and pressure can be accurately adjusted to meet the heating needs of different areas.

[0043] The electric valve automatically adjusts the valve opening according to the instructions of the PLC controller. By adjusting the opening of the electric valve, the water supply flow can be further adjusted to ensure the stable operation of the heating system.

[0044] In addition, the system also has fault detection and alarm functions. When the sensor detects abnormal data or equipment failure, the PLC controller will promptly send out an alarm signal to notify the operator to handle it. This fault detection and alarm mechanism can ensure the safe and reliable operation of the system.

[0045] The intelligent water mixing heating unit control system integrates PLC controllers, sensors, water mixers, circulating pumps, electric valves and other equipment to achieve comprehensive monitoring and precise control of the heating process. This intelligent control method not only improves heating efficiency and quality, but also reduces energy consumption and operating costs, providing users with a more comfortable and energy-saving heating experience.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent water mixing heating unit control system, comprising a PLC controller, a primary water supply pipe of a frequency converter, a primary water return pipe, a high zone secondary water supply pipe, a high zone secondary water return pipe, a low zone secondary water supply pipe, a low zone secondary water return pipe and a water mixer, characterized in that: The water mixer is provided with four output ends, one of which is fixedly connected to the primary water supply pipe, one of which is fixedly connected to the secondary water return pipe of the high zone, one of which is fixedly connected to the primary water return pipe and the secondary water return pipe of the low zone at the same time, one of which is fixedly connected to the secondary water supply pipe of the high zone and the secondary water return pipe of the high zone respectively through a pressure transmitter and a temperature transmitter, one end of the secondary water supply pipe of the high zone and the secondary water return pipe of the high zone are fixedly connected to the high zone, and are connected through the high zone, and one end of the secondary water supply pipe of the low zone and the secondary water return pipe of the low zone are fixedly connected to the low zone, and are connected through the low zone; A check valve, a No. 1 circulating pump group and a No. 2 circulating pump group are fixedly connected inside the secondary water supply pipe of the high zone, and the check valve, the No. 1 circulating pump group and the No. 2 circulating pump group are connected in parallel. A check valve, a No. 3 circulating pump group and a No. 4 circulating pump group are fixedly connected inside the secondary water supply pipe of the low zone, and the check valve, the No. 3 circulating pump group and the No. 4 circulating pump group are connected in parallel. The number of the frequency converters is set to two, one of which electrically controls the No. 1 circulating pump group and the No. 2 circulating pump group, and the other frequency converter electrically controls the No. 3 circulating pump group and the No. 4 circulating pump group. The frequency converter is electrically connected to a PLC controller, and the input end of the PLC controller is electrically connected to an input module, and the output end is electrically connected to an output module.

2. According to claim 1, the intelligent water mixing heating unit control system is characterized in that: The primary side water supply pipe is fixedly connected with a manual valve, a p11 pressure transmitter, a t11 temperature transmitter, a decontaminator, a p10 pressure transmitter, an m1 electric valve, and a second actuator valve in sequence, and the m1 electric valve is connected in parallel with the manual valve.

3. According to claim 1, the intelligent water mixing heating unit control system is characterized in that: The primary side return water pipe is equipped with an F flow meter, a manual valve, a P12 pressure transmitter, a T12 temperature transmitter, and an M2 electric valve in sequence.

4. The intelligent water mixing heating unit control system according to claim 1 is characterized in that: The interior of the secondary side water supply pipe of the high zone is also fixedly connected with a manual valve, and the manual valve is located on one side of the No. 1 circulating pump group. The interior of the secondary side water supply pipe of the high zone is also fixedly connected with an M3 electric valve, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flow meter, and a manual valve, and is located on the other side of the No. 1 circulating pump group. One end of the M3 electric valve is fixedly connected with a pressure relief pipe; The No. 1 circulation pump group is composed of a manual valve, a No. 1 circulation pump, a check valve and a manual valve, and the No. 2 circulation pump is composed of a manual valve, a No. 2 circulation pump, a check valve and a manual valve.

5. The intelligent water mixing heating unit control system according to claim 1 is characterized in that: The interior of the secondary side water supply pipe of the low zone is also fixedly connected with a manual valve, and the manual valve is located on one side of the No. 3 circulation pump group. The interior of the secondary side water supply pipe of the low zone is also fixedly connected with a P23 pressure transmitter, a T23 temperature transmitter, an F2 flow meter and a manual valve, and is located on the other side of the No. 3 circulation pump group; The No. 3 circulation pump group is composed of a manual valve, a No. 3 circulation pump, a check valve, and a manual valve. The No. 4 circulation pump group is composed of a manual valve, a No. 4 circulation pump, a check valve, and a manual valve.

6. The intelligent water mixing heating unit control system according to claim 1 is characterized in that: The interior of the secondary side return water pipe of the high zone is fixedly connected with a T22 temperature transmitter, a P22 pressure transmitter, a decontamination device, a P24 pressure transmitter and a manual valve in sequence.

7. The intelligent water mixing heating unit control system according to claim 1 is characterized in that: The interior of the secondary side return water pipe of the low zone is connected with an angle valve, a t26 temperature transmitter, a decontamination device, a p26 pressure transmitter and a manual valve in sequence.

8. An intelligent water mixing heating unit control system according to any one of claims 1 to 7, characterized in that: The input module includes a P11 pressure transmitter, a T11 temperature transmitter, a P10 pressure transmitter, a P12 pressure transmitter, a T12 temperature transmitter, an F flowmeter, a P22 pressure transmitter, a T22 temperature transmitter, a P20 pressure transmitter, a T20 temperature transmitter, a P21 pressure transmitter, a T21 temperature transmitter, an F1 flowmeter, a P23 pressure transmitter, a T23 temperature transmitter, an F2 flowmeter, a P24 pressure transmitter, a T26 temperature transmitter, and a P26 pressure transmitter; The output module includes an m1 electric valve, an m2 electric valve, an m3 electric valve, a water mixer, a No. 1 circulation pump, a No. 2 circulation pump, a No. 3 circulation pump and a No. 4 circulation pump.

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