On-off time area method heat supply metering system

Abstract

The utility model discloses an on-off time area method heat supply metering system which comprises a heat supply management unit, the heat supply management unit is connected with a plurality of unit management branches in a communication mode, and each unit management branch comprises a unit data acquisition controller; the utility model relates to the technical field of heat supply metering, which collects information such as on-off time, temperature, heat meter reading and the like of an external circulation unit and an internal circulation unit of a resident in real time through an external data acquisition controller and an internal data acquisition controller, and compares data of an internal water inlet temperature sensor with data of an internal water return temperature sensor. The indoor temperature loss of a resident can be accurately calculated, and the outdoor temperature loss of hot water is further evaluated by combining data of an external water inlet temperature sensor and an external water return temperature sensor and the indoor temperature loss of the resident, so that useless heat consumption and resident heat consumption can be separately counted in a heating management level, and the heating management level is improved. And an accurate basis is provided for heat consumption evaluation.

Description

Technical Field

[0001] This utility model relates to the field of heat metering technology, specifically a heat metering system based on the on / off time-area method. Background Technology

[0002] The on / off time-area method, also known as the "time-temperature method" or "SWF" system, is a metering method that uses building heat meters as the settlement point and reasonably allocates heat usage based on the user's heating time, area, and temperature. For example, a heating metering system based on the on / off time-area method, disclosed in publication number CN209295282U, includes a heating management host computer. This host computer is connected to a building management subsystem configured according to building number. The building management subsystem includes a building total heat meter and a building data acquisition unit. The building data acquisition unit is electrically connected to at least one on / off controller. The on / off controller is connected to a room temperature control unit via a communication network. The room temperature control unit is configured for each household. However, this system only has control functions at the heating management level. If the indoor temperature of a resident exceeds the required temperature, it will result in resource waste, causing losses for residents who pay according to heating metering. Furthermore, it can only statistically analyze the heat consumption of each building. During the heating process, pipes typically travel a distance outdoors before entering the resident's home, making it difficult for the heating management level to separate useless heat consumption from resident heat consumption for statistical analysis, thus affecting the heat consumption assessment at the heating management level.

[0003] While existing technologies may already offer solutions to the aforementioned problems, this case aims to provide an alternative or replacement technical solution. Utility Model Content

[0004] To address the problems raised in the background art, this utility model is implemented through the following technical solution: a heating metering system based on the on / off time-area method, comprising a heating management unit, wherein the heating management unit is connected to multiple unit management branches via communication, and each unit management branch includes a unit data acquisition controller;

[0005] The unit data acquisition controller is connected in parallel to an external data acquisition controller and an internal data acquisition controller via communication. The external data acquisition controller is connected to the resident's outdoor circulation unit via communication, and the internal data acquisition controller is connected to the resident's internal circulation unit via communication. The external data acquisition controller is connected to the resident's external heat meter via communication, and the internal data acquisition controller is connected to the resident's internal heat meter via communication.

[0006] Preferably, the outdoor circulation unit for residential buildings includes an external water inlet valve and an external return water temperature sensor. One end of the external water inlet valve is connected to the external water inlet temperature sensor, and an external circulation valve is connected between the external water inlet temperature sensor and the external return water temperature sensor. The outdoor circulation unit for residential buildings also includes an external ambient temperature sensor.

[0007] Preferably, the residential internal circulation unit includes an internal water inlet valve, one end of which is connected to an internal water inlet temperature sensor, one end of which is connected to a manual valve, one end of which is connected to an electromagnetic flow meter, one end of which is connected to a heat dissipation section, one end of which is connected to an internal return water temperature sensor, the internal return water temperature sensor being connected to an external return water temperature sensor and an external circulation valve, and the residential internal circulation unit also includes an indoor ambient temperature sensor.

[0008] Preferably, the external data acquisition controller is connected to the external water inlet valve, the external water inlet temperature sensor, the external return water temperature sensor, and the external ambient temperature sensor via communication.

[0009] Preferably, a check valve is provided between the internal return water temperature sensor and the external circulation valve.

[0010] Preferably, the internal data acquisition controller is connected to the internal inlet valve, the internal inlet water temperature sensor, the electromagnetic flow meter, the return water temperature sensor, and the indoor ambient temperature sensor via communication.

[0011] Beneficial effects

[0012] This invention provides a heating metering system based on the on / off time-area method, which has the following advantages compared with the prior art: Through external and internal data acquisition controllers, it collects real-time information such as the on / off time, temperature, and heat meter readings of the outdoor and internal circulation units of the residents. By comparing the data from the internal inlet water temperature sensor and the internal return water temperature sensor, it can accurately calculate the temperature loss inside the residents' homes. Combining the data from the external inlet water temperature sensor and the external return water temperature sensor with the temperature loss inside the residents' homes, it further assesses the temperature loss of hot water outdoors. This helps heating management to separate useless heat consumption from residents' heat consumption, providing an accurate basis for heat consumption assessment. Residents can manually close the manual valve to stop the operation of the internal circulation unit according to their own needs, achieving targeted heating, avoiding unnecessary energy waste, and improving the energy efficiency ratio of the heating system. Attached Figure Description

[0013] Figure 1 This is a system structure diagram of a heating metering system based on the on / off time-area method according to this utility model.

[0014] Figure 2 This is a partial system structure diagram of a heating metering system based on the on / off time-area method according to this utility model.

[0015] In the diagram: 1. Heating management unit; 2. Unit data acquisition controller; 3. External data acquisition controller; 4. Internal data acquisition controller; 5. Residential outdoor circulation unit; 501. External inlet valve; 502. External inlet water temperature sensor; 503. External return water temperature sensor; 504. External circulation valve; 505. Outdoor ambient temperature sensor; 6. Residential internal circulation unit; 601. Internal inlet valve; 602. Internal inlet water temperature sensor; 603. Manual valve; 604. Electromagnetic flow meter; 605. Heat dissipation section; 606. Internal return water temperature sensor; 607. Indoor ambient temperature sensor; 608. Check valve; 7. Residential external heat meter; 8. Residential internal heat meter. Detailed Implementation

[0016] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] Example: Please refer to Figure 1-2 To address the issue that some time-area heating metering systems only have control functions at the top-level management level, resulting in resource waste when the internal temperature of residents exceeds demand, causing losses for residents who pay for heating according to metering, and because they can only count the heat consumption of each building, while the pipes usually travel a certain distance outdoors before entering the residents during the heating process, it is not convenient for the heating management level to separate the useless heat consumption from the residents' heat consumption for statistical purposes, thus affecting the heat consumption assessment at the heating management level, this technical solution was designed, and the detailed technical solution is as follows;

[0018] A heating metering system based on on / off time and area method includes a heating management unit 1, which is connected to multiple unit management branches via communication. Each unit management branch includes a unit data acquisition controller 2.

[0019] It should be noted that the communication methods mentioned in this technical solution include wired or wireless methods. Wired communication methods may include:

[0020] 1. RS-485: Used to connect the unit data acquisition controller 2, external data acquisition controller 3 and internal data acquisition controller 4, supporting multi-point communication and a transmission distance of up to 1200 meters;

[0021] 2. Modbus: A communication protocol based on RS-485, suitable for communication between controllers and sensors;

[0022] 3. M-Bus: Used to connect the external heat meter 7 and the internal heat meter of the residence, supporting long-distance transmission and low power consumption;

[0023] Wireless communication methods can be adopted as follows:

[0024] 1. ZigBee: Used to connect the internal data acquisition controller 4 with devices such as the indoor ambient temperature sensor 607 and the electromagnetic flow meter 604, and supports self-organizing networks;

[0025] 2. LoRa: Used to connect external data acquisition controller 3 with external ambient temperature sensors, external heat meters, and other components, supporting long-distance communication.

[0026] 3. NB-IoT: Used to connect the heating management unit 1, the external heat meter 7 of the residential building, and the internal heat meter 8 of the residential building to realize remote meter reading, and is used for remote monitoring and data transmission;

[0027] Specifically, the unit data acquisition controller 2 is connected in parallel to the external data acquisition controller 3 and the internal data acquisition controller 4 via communication. The external data acquisition controller 3 is connected to the residential outdoor circulation unit 5 via communication. The internal data acquisition controller 4 is connected to the residential internal circulation unit 6 via communication. The external data acquisition controller 3 is connected to the residential outdoor heat meter 7 via communication. The internal data acquisition controller 4 is connected to the residential internal heat meter 8 via communication.

[0028] It should be noted that the external data acquisition controller 3 connects to the outdoor circulation unit 5 and the outdoor heat meter 7, collects information such as the on / off time and temperature of the outdoor circulation unit 5 and the readings of the outdoor heat meter, and uploads the collected data to the unit data acquisition controller 2. The internal data acquisition controller 4 connects to the indoor circulation unit 6 and the indoor heat meter 8, collects information such as the on / off time and temperature of the indoor circulation unit 6 and the readings of the indoor heat meter, and uploads the collected data to the unit data acquisition controller 2. The unit data acquisition controller 2 is the core of the unit management branch, used to collect, process and upload data from the external data acquisition controller 3 and the internal data acquisition controller 4 to the heating management unit 1.

[0029] Specifically, the outdoor circulation unit 5 includes an external water inlet valve 501 and an external return water temperature sensor 503. One end of the external water inlet valve 501 is connected to an external water inlet temperature sensor 502. An external circulation valve 504 is connected between the external water inlet temperature sensor 502 and the external return water temperature sensor 503. The outdoor circulation unit 5 also includes an external ambient temperature sensor.

[0030] Specifically, the residential internal circulation unit 6 includes an internal water inlet valve 601, one end of which is connected to an internal water inlet temperature sensor 602, one end of which is connected to a manual valve 603, one end of which is connected to an electromagnetic flow meter 604, one end of which is connected to a heat dissipation section 605, one end of which is connected to an internal return water temperature sensor 606, and the internal return water temperature sensor 606 is connected to an external return water temperature sensor 503 and an external circulation valve 504. The residential internal circulation unit 6 also includes an indoor ambient temperature sensor 607.

[0031] It should be noted that under normal operating conditions, the external circulation valve 504 is closed, and the manual valve 603 is open. Hot water enters the residential outdoor circulation unit 5 from the main pipeline of the heating system through the external inlet valve 501. The external inlet water temperature sensor 502 monitors and records the inlet water temperature data in real time. Then, it enters the residential indoor circulation unit 6 through the internal inlet valve 601. The internal inlet water temperature sensor 602 monitors and records the inlet water temperature data in real time. At the same time, the electromagnetic flow meter 604 monitors and records the inlet water velocity and flow rate in real time. After passing through the heat dissipation section 605, the indoor temperature of the residential unit rises, achieving the purpose of heating. The indoor ambient temperature sensor 603... 07. Real-time monitoring and recording of indoor temperature: The internal return water temperature sensor 606 monitors and records the indoor return water temperature data in real time, and the external return water temperature sensor 503 monitors and records the outdoor return water temperature data in real time. By comparing the data of the internal inlet water temperature sensor 602 and the internal return water temperature sensor 606, the temperature loss inside the resident's room can be known. By comparing the data of the external inlet water temperature sensor 502 and the external return water temperature sensor 503 and the temperature loss inside the resident's room, the temperature loss of hot water outside can be known. This makes it easier for the heating management level to separate the useless heat consumption from the heat consumption of the residents for statistical purposes, and facilitates the heat consumption assessment at the heating management level.

[0032] The internal data acquisition controller 4 controls the opening angle of the internal water inlet valve 601 based on the data received from the indoor ambient temperature sensor 607 to achieve temperature regulation. When heating is not required at the resident level, the manual valve 603 can be manually closed to stop the operation of the resident internal circulation unit 6, so as to achieve targeted heating according to the resident's needs, avoid waste of resources, and improve the economy for residents who pay according to heating metering. At this time, if the external ambient temperature sensor detects that the temperature value is low, the external circulation valve 504 is opened, and hot water enters the external circulation valve 504 from the main pipe of the heating system through the external water inlet valve 501 and is discharged from the external return water temperature sensor 503 to prevent the external pipe from freezing and ensure safety.

[0033] Preferably, the external data acquisition controller 3 is connected to the external water inlet valve 501, the external water inlet temperature sensor 502, the external water return temperature sensor 503 and the external ambient temperature sensor via communication.

[0034] As a preferred and further option, a one-way valve 608 is provided between the internal return water temperature sensor 606 and the external circulation valve 504 to prevent hot water backflow.

[0035] As a preferred and further option, the internal data acquisition controller 4 is connected to the internal water inlet valve 601, the internal water inlet temperature sensor 602, the electromagnetic flow meter 604, the return water temperature sensor, and the indoor ambient temperature sensor 607 via communication.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating metering system based on the on / off time-area method, comprising a heating management unit (1), wherein the heating management unit (1) is connected to multiple unit management branches via communication, characterized in that, Each of the aforementioned unit management branches includes a unit data acquisition controller (2); The unit data acquisition controller (2) is connected in parallel to an external data acquisition controller (3) and an internal data acquisition controller (4) via communication. The external data acquisition controller (3) is connected to an outdoor circulation unit (5) via communication. The internal data acquisition controller (4) is connected to an indoor circulation unit (6) via communication. The external data acquisition controller (3) is connected to an outdoor heat meter (7) via communication. The internal data acquisition controller (4) is connected to an indoor heat meter (8) via communication.

2. The on / off time-area method heating metering system according to claim 1, characterized in that, The residential outdoor circulation unit (5) includes an external water inlet valve (501) and an external return water temperature sensor (503). One end of the external water inlet valve (501) is connected to an external water inlet temperature sensor (502). An external circulation valve (504) is connected between the external water inlet temperature sensor (502) and the external return water temperature sensor (503). The residential outdoor circulation unit (5) also includes an external ambient temperature sensor.

3. A heating metering system based on the on / off time-area method according to claim 2, characterized in that, The residential internal circulation unit (6) includes an internal water inlet valve (601), one end of which is connected to an internal water inlet temperature sensor (602), one end of which is connected to a manual valve (603), one end of which is connected to an electromagnetic flow meter (604), one end of which is connected to a heat dissipation section (605), one end of which is connected to an internal return water temperature sensor (606), the internal return water temperature sensor (606) is connected to an external return water temperature sensor (503) and an external circulation valve (504), and the residential internal circulation unit (6) also includes an indoor ambient temperature sensor (607).

4. A heating metering system based on the on / off time-area method according to claim 2, characterized in that, The external data acquisition controller (3) is connected to the external water inlet valve (501), the external water inlet temperature sensor (502), the external water return temperature sensor (503), and the external ambient temperature sensor via communication.

5. A heating metering system based on the on / off time-area method according to claim 3, characterized in that, A check valve (608) is provided between the internal return water temperature sensor (606) and the external circulation valve (504).

6. A heating metering system based on the on / off time-area method according to claim 1, characterized in that, The internal data acquisition controller (4) is connected to the internal water inlet valve (601), the internal water inlet temperature sensor (602), the electromagnetic flow meter (604), the return water temperature sensor, and the indoor ambient temperature sensor (607) via communication.

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