CN202868819U - Intelligent centralized heating system - Google Patents

Abstract

The utility model discloses an intelligent centralized heating system, which comprises a heating source, a heating station and a heating user. The heating station includes a secondary circulation pump, which can control the flow rate of the pipeline where the secondary circulation pump is located. The control device and the climate compensator controllably connected with the flow control device, the climate compensator includes temperature sensors respectively arranged at the water outlet and the return water outlet of the secondary pipe network circulation pipeline and arranged outdoors. An outdoor temperature sensor that senses the outdoor temperature. The utility model heating system This project adopts the secondary water supply temperature automatic adjustment technology to monitor the outdoor temperature change in real time, and uses the outdoor temperature as a parameter to automatically distribute the heating primary network water volume through the frequency conversion speed regulating device, so as to comprehensively solve the heating system. The problem of imbalance of thermal and hydraulic working conditions can be solved, and the optimal operation state of the whole network can be achieved, and energy can be saved to the greatest extent.

Description

Intelligent Central Heating System

technical field

The utility model relates to the technical field of heating, in particular to an intelligent central heating system. the

Background technique

Now my country's urban central heating is developing rapidly, the number of cities is increasing, and the urban population is increasing. With the further improvement of people's living standards, the quantity and quality requirements for urban heating will inevitably increase and improve. In recent years, the Ministry of Construction has put forward the goal of 50% energy saving in civil buildings. To achieve this goal, it is necessary to realize the energy saving control of the heating system. In order to ensure the normal operation of central heating, improve system efficiency, reduce energy consumption and heat loss, and at the same time, in order to improve system stability, ensure indoor comfort of users, and achieve maximum energy saving effect, a series of detection, measurement and adjustment controls must be equipped according to system conditions. system. At the same time, temperature control is an important part of building energy conservation, especially in areas with central heating, and is a key measure to implement the goal of 50% energy conservation in civil buildings. the

The central heating system is composed of three parts: heat source, heat supply network and heat user. The heat source refers to the heating equipment that uses the heat energy generated by fuel combustion to heat the heat medium (steam or hot water) in the heating system in the regional boiler room or thermal power plant. The heating pipe network refers to the pipeline system and its delivery equipment that transport the heat medium generated by the heat source to each heat user. The heating system for heat users refers to the heating system inside the heat users, the domestic hot water supply system, the production heat system and its heat equipment. the

At present, the operation management and control technology of central heating system in most areas of our country is immature, the automation level is low, and it lacks rationality. On the whole, the control method of the heating system cannot keep up with the development of the heating scale, thus affecting the exertion of the superiority of the central heating. the

Contents of the invention

The purpose of the utility model is to provide an intelligent central heating system that automatically controls the heating temperature and stabilizes the technical defects in the prior art. the

The technical scheme adopted for realizing the purpose of this utility model is:

An intelligent central heating system, including a heating source, a heat station and a heat user, the heat station includes a secondary circulation pump that introduces hot water from the primary pipe network into the heat station, and can control the secondary circulation A flow control device for the flow of the pipeline where the pump is located and a climate compensator controllably connected to the flow control device. The temperature sensor and the outdoor temperature sensor arranged outdoors can sense the outdoor temperature. the

The flow control device is a frequency conversion control cabinet capable of controlling the working conditions of the secondary circulation pump. the

The flow control device is an electric control valve connected in series on the pipeline of the secondary circulation pump and kept in a controllable connection with the climate compensator. the

Compared with the prior art, the beneficial effects of the utility model are:

The utility model heating system This project adopts the secondary water supply temperature automatic adjustment technology to monitor the outdoor temperature change in real time, and uses the outdoor temperature as a parameter to automatically distribute the heating primary network water volume through the frequency conversion speed regulating device, so as to comprehensively solve the heating system. It can achieve the best operation state of the whole network and save energy to the greatest extent; it can ensure the safe and stable operation of the central heating system; it can improve the heating effect and improve the user satisfaction rate by improving the Social benefits of heating enterprises. At the same time, the primary circulation pump can also be transformed, and the original high-power, high-lift water pump can be replaced with a low-lift, high-flow, low-power water pump to further save electricity. the

Description of drawings

Fig. 1 shows the structure diagram of the control system of the utility model. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. the

As shown in Figure 1, the heating system of the present invention includes a heat supply heat source 1 using a thermal power plant as a centralized heat supply, and a primary pipe network 2 for transporting hot water or water vapor from the heat supply heat source 1. The primary circulation pump 4 is connected in parallel to the thermal substation 3 of the primary pipeline network and the heat user 9 supplied with heat by the thermal substation. the

Among them, the high-temperature superheated steam provided by the heating power plant passes through the steam-water heat exchanger of the heat exchange station of the power plant to form high-temperature hot water and is sent to each thermal station by the primary pipe network 2. The primary pipe network includes circulating water pipelines and primary circulation The water pump 12 is used to transport heat to each heat station by means of the primary circulating water pump. the

The thermal station includes a secondary circulation pump 4 that introduces hot water from the primary pipeline network into the thermal station, a frequency conversion control cabinet 6 that can control the working conditions of the secondary circulation pump, and is used to complete the primary pipeline network and the secondary circulation pump. A water-water heat exchanger for heat exchange in the first-stage pipe network, a secondary pipe network circulation pipeline 13, a secondary pipe network circulation pump 8 arranged on the secondary pipe network circulation pipe to promote water circulation, and a climate compensator. the

The climate compensator includes a temperature data processing module that is controllably connected to the frequency conversion control cabinet, temperature sensors that are respectively installed at the water outlet and the water return of the secondary pipe network circulation pipeline, and can be sensed outdoors. The outdoor temperature sensor 10 of the outdoor temperature, the temperature data processing module 5 can receive the signals of each temperature sensor to obtain the temperature values of various places, and then automatically calculate the indoor temperature according to the changes in the outdoor temperature and the requirements for the indoor temperature at different times set by the user. Calculate the appropriate supply and return water temperature, then compare the calculated temperature with the temperature at the water outlet and return water outlet and send the comparison result to the frequency conversion control cabinet, and the secondary circulation pump is controlled by the frequency conversion control cabinet Increase or decrease the water delivery volume, so that the heat supply of the heating user system can meet the heating user's requirements. That is, when the outdoor temperature changes, in order to keep the indoor temperature relatively stable, the water supply temperature of the heating user should also change accordingly. When the outdoor temperature is lowered by the outdoor temperature sensor, in order to maintain the original indoor temperature, the temperature of the water supply in the secondary pipe network circulation pipeline should be increased appropriately. At this time, the climate compensator transmits the control information to the frequency conversion control cabinet, and the frequency conversion control cabinet Increase the speed of the secondary circulating pump to increase the hot water flow of the primary pipe network into the heat exchanger (or water mixer) of the thermal station. After passing through the heat exchanger (or water mixer), the water supply for heating users The temperature will rise; when the outdoor temperature rises, the opposite adjustment will be made, so that the return water temperature of the boiler will rise, the output load of the boiler unit will be reduced, and the purpose of energy-saving operation will be achieved. the

As a modification of the above embodiment, frequency conversion control may not be used for the secondary circulating pump, and an electric control valve is connected in series on the pipeline of the secondary circulating pump, and the opening of the electronically controlled control valve is controlled by combining the temperature of the climate compensator, thereby The above-mentioned purpose can also be achieved by changing the flow actually entering the heat station. the

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model. the

Claims (3)

1. An intelligent central heating system, comprising a heating source, a heat station and a heat user, characterized in that: the heat station includes a secondary circulation pump that introduces hot water from the primary pipe network into the heat station, and can control The flow control device for the flow of the pipeline where the secondary circulation pump is located and the climate compensator controllably connected to the flow control device, the climate compensator includes the outlets of the circulation pipeline of the secondary pipeline network respectively The temperature sensor at the water inlet and the water return port and the outdoor temperature sensor installed outdoors can sense the outdoor temperature. the 2. The intelligent central heating system according to claim 1, wherein the flow control device is a frequency conversion control cabinet capable of controlling the working conditions of the secondary circulation pump. the 3. The intelligent central heating system according to claim 1, wherein the flow control device is an electric control device connected in series on the pipeline of the secondary circulation pump and kept controllably connected with the climate compensator. valve. the