阅读说明：本技术 供热管网水力调控系统及其智能控制和供热计费的方法 (Heat supply pipe network hydraulic regulation and control system and intelligent control and heat supply charging method thereof ) 是由 李明甲 于 2020-04-23 设计创作，主要内容包括：本发明的供热管网水力调控系统及其智能控制和供热计费的方法涉及一种对供热系统中的水力进行智能调控、控制以及对供热用户的计费方法,目的是为了克服现有很多供热系统产生供热管网水力失调、楼宇水力失调和用户水力失调,以及收费不够精准的问题,其中,供热管网水力调控系统,包括一级网供水调节阀、二级网供水压力感应器、二级网变频循环泵、楼前供水变频循环泵、楼前供水流量计、楼前供水温度感应器、楼前回水温度感应器、室内供水调节阀、室内温度感应器、楼前压差传感器、楼前计量控制装置和远程调控装置。(The invention discloses a heat supply pipe network hydraulic regulation and control system and an intelligent control and heat supply charging method thereof, and relates to a method for intelligently regulating, controlling and charging heat supply users of hydraulic power in a heat supply system, aiming at overcoming the problems of hydraulic imbalance of the heat supply pipe network, hydraulic imbalance of buildings and users and inaccurate charging caused by a plurality of existing heat supply systems.)

1. The heat supply pipe network hydraulic regulation and control system is characterized by comprising a primary network water supply regulating valve (9), a secondary network water supply pressure sensor (10), a secondary network frequency conversion circulating pump (11), a pre-building water supply frequency conversion circulating pump (12), a pre-building water supply flowmeter (13), a pre-building water supply temperature sensor (14), a pre-building return water temperature sensor (15), an indoor water supply regulating valve (16), an indoor temperature sensor (17), a pre-building differential pressure sensor (18), a pre-building metering control device (19) and a remote regulation and control device (20);

the primary network water supply regulating valve (9) is arranged on the primary heat supply pipe network and is used for regulating the water supply flow of the primary network so as to regulate the heat supply quantity transmitted from the primary heat supply pipe network to the secondary heat supply pipe network;

the secondary network water supply pressure sensor (10) is arranged on a secondary network water supply pipe (1) in the heat supply station and is used for collecting the secondary network water supply pressure;

the secondary network variable frequency circulating pump (11) is arranged on a secondary network return water pipe (2) in the heat supply station and is used for adjusting the circulating water quantity of a secondary heat supply network;

the building front water supply variable frequency circulating pump (12) is arranged on the building front water supply pipe (4) and is used for adjusting the circulating water quantity of a building heat supply pipe network;

the building front water supply flowmeter (13) is arranged on the building front water supply pipe (4) and is used for collecting the water supply flow of a building heat supply pipe network;

the building front water supply temperature sensor (14) is arranged on a building front water supply pipe (4) and is used for collecting the water supply temperature of a building heat supply pipe network;

the front-floor return water temperature sensor (15) is arranged on the front-floor return water pipe (5) and is used for collecting the return water temperature of the building heat supply pipe network;

the indoor water supply regulating valve (16) is arranged on the indoor water supply pipe (6) and is used for changing the circulating water quantity of an indoor heat supply pipe network through regulating the opening degree of the valve so as to regulate the indoor temperature of a heat supply user;

the indoor temperature sensors (17) are distributed in the heat supply user rooms and used for collecting the temperature of each area in the heat supply user rooms so as to obtain the indoor temperature of the heat supply user, and the indoor temperature of the user is the average temperature of the temperatures of each area in the heat supply user rooms;

the building front differential pressure sensor (18) is arranged between a building front water supply pipe (4) and a building front water return pipe (5) and is used for acquiring the water pressure difference between water supply and water return of a building heat supply pipe network;

the pre-building metering control device (19) is used for receiving building heat supply pipe network data, uploading the data to the remote control device (20), and changing the working frequency of the pre-building water supply variable frequency circulating pump (12) according to a frequency control signal sent by the remote control device (20); the building heat supply pipe network data comprises water supply flow data, water supply temperature data, return water temperature data, water pressure difference data, user indoor temperature data and valve opening data of the building heat supply pipe network;

the remote control device (20) is used for receiving the water supply pressure data of the secondary network and the building heat supply network data, and adjusting the valve opening of the primary network water supply adjusting valve (9), the working frequency of the secondary network variable frequency circulating pump (11) and the working frequency of the pre-building water supply variable frequency circulating pump (12) according to the water supply pressure data of the secondary network and the building heat supply network data.

2. The hydraulic regulation and control system of the heat supply pipe network according to claim 1, wherein the indoor heat supply device (8) is a hanging piece type heat supply device.

3. The hydraulic regulation and control system of the heat supply pipe network according to claim 1, wherein the indoor heat supply device (8) is a geothermal heat supply device;

the regulation and control system further comprises a water mixing valve (21), the water mixing valve (21) is arranged on the water mixing pipe, the water mixing pipe is communicated with the building front water supply pipe (4) and the building front water return pipe (5), and one end of the water mixing pipe communicated with the building front water supply pipe (4) is located in front of an inlet of the building front water supply variable-frequency circulating pump (12).

4. The heating network hydraulic regulation system of claim 1, 2 or 3, further comprising a water supply network;

the water replenishing pipe network comprises a water replenishing tank (22), a water replenishing pipeline (23) and a water replenishing pump (24);

the water replenishing tank (22) is communicated with a secondary network water return pipe (2) in the station through a water replenishing pipeline (23), and the water replenishing pump (24) is arranged on the secondary network water return pipe (2).

5. The heating network hydraulic regulation system of claim 1, 2 or 3, further comprising a meteorological data acquisition module (25);

the meteorological data acquisition module (25) is used for detecting and outputting meteorological data to the remote control device (20), the meteorological data include outdoor temperature, sunshine radiant quantity, wind direction and wind speed.

6. The method for intelligently controlling the hydraulic regulation and control system of the heat supply pipe network according to claim 1, is characterized by comprising the following steps:

when the water injection pressure of the secondary heat supply pipe network is increased to be higher than a water injection pressure threshold value, starting a secondary network variable frequency circulating pump to enable the secondary heat supply pipe network to perform heat supply circulation; meanwhile, uploading heat supply data of each secondary heat supply pipe network to a remote regulation and control device; the heat supply data of the secondary heat supply pipe network comprises temperature data, pressure data and flow data of each node in the secondary heat supply pipe network; the node comprises a valve, an elbow, a compensator and a reducing pipe;

starting a water supply variable-frequency circulating pump in front of the building to enable a building heat supply pipe network to perform heat supply circulation; meanwhile, water supply flow data, water supply temperature data, return water temperature data and water pressure difference data of the building heat supply pipe network are uploaded to a remote regulation and control device;

when the indoor heat supply pipe network performs heat supply circulation, user indoor temperature data and valve opening data are uploaded to the remote control device;

step two, calculating heat supply indexes of corresponding buildings according to the outdoor temperature, the indoor temperature of the user and the heat supply area of the buildings, and determining the water supply temperature of a secondary heat supply pipe network according to the heat supply indexes;

step three, making the water supply temperature of the building adopting the hanging piece type heating device equal to the water supply temperature of a secondary heat supply pipe network, and setting a first differential pressure value according to the actual resistance of the building at the rated operation flow rate to ensure that the water pressure difference between water supply and return water is kept at the first differential pressure operation of the building rated operation flow rate;

the water supply temperature of a building adopting the geothermal heat supply device is equal to 0.75 time of the water supply temperature of a secondary heat supply pipe network, and a second differential pressure value is set according to the actual resistance of the building at the rated operation flow rate so that the water pressure difference between water supply and return water is kept at the second differential pressure operation of the building rated operation flow rate.

7. The method of claim 6, wherein the water injection pressure threshold is 0.3 MPa.

8. The method of claim 6, wherein the valve opening is 0-100% corresponding to a user room temperature of 8-28 ℃.

9. The method of claim 6, wherein step three further comprises a method of compensating for building heat usage using meteorological data, the method comprising:

when the sunlight radiation amount is increased, the rotating speed of the variable-frequency circulating pump of the secondary network is reduced, so that the circulating water amount of the secondary heat supply network is reduced, the water supply temperature is increased, and when the water supply temperature is higher than a temperature set value, the opening degree of the water supply regulating valve of the primary network is reduced, so that the water supply flow of the primary heat supply network is reduced, the heat supply amount of the primary heat supply network to the secondary heat supply network is further reduced, and the water supply temperature of the secondary heat supply network is kept unchanged at the temperature set value;

when the sunshine radiant quantity reduces or/and wind-force increase, improve the rotational speed of second grade net frequency conversion circulating pump, make second grade heat supply pipe network circulation water yield increase, the water supply temperature reduces, when the water supply temperature is less than the temperature set value, make the aperture increase of first grade net water supply governing valve, make the water supply flow of first grade heat supply pipe network increase, and then increase the heat supply volume that first grade heat supply pipe network carried to second grade heat supply pipe network, make the water supply temperature of second grade heat supply pipe network keep the temperature set value unchangeable.

10. The method for charging for heat supply by using the heat supply pipe network hydraulic regulation and control system of claim 1, is characterized by comprising the following steps:

the method comprises the following steps that firstly, the indoor temperature of each area in a heat supply user room is collected through an indoor temperature sensor, so that the indoor temperature of the heat supply user is obtained, and the indoor temperature of the heat supply user is uploaded to a remote control device;

the indoor temperature of the user is the average temperature of the indoor temperature of each area of the heat supply user;

and step two, calculating the accumulated indoor temperature of the heat supply users, and calling corresponding user heat supply areas and charging formulas pre-stored in the remote control device to obtain heat supply cost.

Technical Field

The invention relates to a heating system, in particular to a method for intelligently regulating and controlling water power in the heating system and charging a heating user.

Background

The heat supply enterprises generally have two heat supply modes of a hanging piece and terrestrial heat, and two different heat supply modes of one heat exchange station can exist at the same time. However, the operation parameters are just opposite, the heat supply of the hanging piece type building needs high temperature and small flow, the heat supply of the geothermal type building needs low temperature and large flow, and one set of heat supply unit is difficult to meet the heat supply modes of two forms.

The existing heat supply areas are all provided with the coexistence of the hanging piece type buildings and the geothermal type buildings, so that when two types of buildings are heated, different parameters required by different heating modes easily cause the problems of water imbalance of a heat supply pipe network, water imbalance of the buildings, water imbalance of users and the like.

In addition, as the heat is a commodity, the measurement is the premise of fair display and transaction, and the essential condition for realizing the satisfaction of both parties of the transaction is accurate measurement. At present, more than 90% of heat supply enterprises and users adopt an area charging method, and the rough metering method of pile estimation cannot display fairness and is difficult to satisfy the users.

Disclosure of Invention

The invention aims to solve the problems of heat supply network hydraulic imbalance, building hydraulic imbalance and user hydraulic imbalance caused by a plurality of existing heat supply systems and insufficient precision of charging, and provides a heat supply network hydraulic regulation and control system and an intelligent control and heat supply charging method thereof.

The invention relates to a heat supply pipe network hydraulic regulation and control system, which comprises a primary network water supply regulating valve, a secondary network water supply pressure sensor, a secondary network variable frequency circulating pump, a pre-building water supply flowmeter, a pre-building water supply temperature sensor, a pre-building return water temperature sensor, an indoor water supply regulating valve, an indoor temperature sensor, a pre-building pressure difference sensor, a pre-building metering control device and a remote regulation and control device, wherein the primary network water supply regulating valve is connected with the primary network water;

the primary network water supply regulating valve is arranged on the primary heat supply pipe network and used for regulating the water supply flow of the primary network so as to regulate the heat supply quantity conveyed from the primary heat supply pipe network to the secondary heat supply pipe network;

the secondary network water supply pressure sensor is arranged on a secondary network water supply pipe in the heat supply station and used for acquiring the water supply pressure of the secondary network;

the secondary network variable frequency circulating pump is arranged on a secondary network return pipe in the heat supply station and is used for adjusting the circulating water quantity of the secondary heat supply network;

the building front water supply variable frequency circulating pump is arranged on a building front water supply pipe and is used for adjusting the circulating water quantity of a building heat supply pipe network;

the building front water supply flowmeter is arranged on a building front water supply pipe and is used for collecting the water supply flow of a building heat supply pipe network;

the building front water supply temperature sensor is arranged on a building front water supply pipe and used for collecting the water supply temperature of a building heat supply pipe network;

the pre-building return water temperature sensor is arranged on the pre-building return water pipe and used for collecting the return water temperature of the building heat supply pipe network;

the indoor water supply regulating valve is arranged on the indoor water supply pipe and used for changing the circulating water quantity of the indoor heat supply pipe network through regulating the opening degree of the valve so as to regulate the indoor temperature of a heat supply user;

the indoor temperature sensors are distributed in the heat supply user rooms and used for collecting the temperature of each area in the heat supply user rooms so as to obtain the indoor temperature of the heat supply user, and the indoor temperature of the user is the average temperature of the temperature of each area in the heat supply user rooms;

the building front differential pressure sensor is arranged between a building front water supply pipe and a building front water return pipe and is used for acquiring the water pressure difference between water supply and water return of a building heat supply pipe network;

the pre-building metering control device is used for receiving the building heat supply pipe network data, uploading the data to the remote regulating and controlling device, and changing the working frequency of the pre-building water supply variable frequency circulating pump according to the frequency control signal sent by the remote regulating and controlling device; the building heat supply pipe network data comprises water supply flow data, water supply temperature data, water return temperature data, water pressure difference data, user indoor temperature data and valve opening data of the building heat supply pipe network;

and the remote regulation and control device is used for receiving the water supply pressure data of the secondary network and the building heat supply network data, and regulating the valve opening of the primary network water supply regulating valve, the working frequency of the secondary network variable frequency circulating pump and the working frequency of the pre-building water supply variable frequency circulating pump according to the water supply pressure data of the secondary network and the building heat supply network data.

The invention discloses a method for intelligently controlling a heat supply pipe network hydraulic regulation and control system, which comprises the following steps:

when the water injection pressure of the secondary heat supply pipe network is increased to be higher than a water injection pressure threshold value, starting a secondary network variable frequency circulating pump to enable the secondary heat supply pipe network to perform heat supply circulation; meanwhile, uploading heat supply data of each secondary heat supply pipe network to a remote regulation and control device; the heat supply data of the secondary heat supply pipe network comprises temperature data, pressure data and flow data of each node in the secondary heat supply pipe network; the node comprises a valve, an elbow, a compensator and a reducing pipe;

starting a water supply variable-frequency circulating pump in front of the building to enable a building heat supply pipe network to perform heat supply circulation; meanwhile, water supply flow data, water supply temperature data, return water temperature data and water pressure difference data of the building heat supply pipe network are uploaded to a remote regulation and control device;

when the indoor heat supply pipe network performs heat supply circulation, user indoor temperature data and valve opening data are uploaded to the remote control device;

step two, calculating heat supply indexes of corresponding buildings according to the outdoor temperature, the indoor temperature of the user and the heat supply area of the buildings, and determining the water supply temperature of a secondary heat supply pipe network according to the heat supply indexes;

step three, making the water supply temperature of the building adopting the hanging piece type heating device equal to the water supply temperature of a secondary heat supply pipe network, and setting a first differential pressure value according to the actual resistance of the building at the rated operation flow rate to ensure that the water pressure difference between water supply and return water is kept at the first differential pressure operation of the building rated operation flow rate;

in a building adopting the geothermal heat supply device, the water supply temperature is reduced to be equal to the water supply temperature of a secondary heat supply pipe network by 0.75 times through a water mixing pipe and an electric regulating valve in front of the building, and a second differential pressure value is set according to the actual resistance of the building at the rated operation flow so that the water pressure difference between water supply and return water is kept at the second differential pressure operation of the building rated operation flow;

the invention discloses a method for charging heat supply by utilizing a heat supply pipe network hydraulic regulation and control system, which comprises the following steps:

the method comprises the following steps that firstly, the indoor temperature of each area in a heat supply user room is collected through an indoor temperature sensor, so that the indoor temperature of the heat supply user is obtained, and the indoor temperature of the heat supply user is uploaded to a remote control device;

the indoor temperature of the user is the average temperature of the indoor temperature of each area of the heat supply user;

and step two, calculating the accumulated indoor temperature of the heat supply users, and calling corresponding user heat supply areas and charging formulas pre-stored in the remote control device to obtain heat supply cost.

The invention has the beneficial effects that: the system not only fundamentally solves the problems of different parameters required by different heat supply modes, but also can solve the problems of hydraulic imbalance of a heat supply pipe network, hydraulic imbalance of buildings and hydraulic imbalance of users, overcomes the defects of difficult adjustment, uneven cold and heat and large energy consumption, and lays a good foundation for popularizing the heat metering of a user end to realize heat utilization according to needs. The system saves 20-35% of electric energy and more than 10% of heat energy, reduces the labor intensity of workers and reduces the energy waste.

The method adopts a temperature area metering method, charges according to the indoor temperature of the area of a resident, is simple and intuitive, and is easy to accept by users, different house structures and different indoor temperatures charge different heat fees, and the users adjust the heat consumption according to the comfort level of the users, and save the heat by more than 10 percent compared with the heat consumption of the existing heating system.

Drawings

FIG. 1 is a schematic structural diagram of a secondary heat supply pipe network hydraulic regulation system of the present invention; the left building is an geothermal building, and the right building is a hanging piece building.

Detailed Description