Heat supply control valve with accurate metering function

Abstract

The invention discloses a heat supply control valve with an accurate metering function. The heat supply control valve with the accurate metering function comprises pipeline connectors, an electromagnetic flowmeter, an electric ball valve, a water inlet temperature sensor, a water return temperature sensor and a control device, wherein when the device is transversely placed as a whole, the first pipeline connector, the electric ball valve, the electromagnetic flowmeter and the second pipeline connector are sequentially connected from left to right; and the control device is fixedly connected to the upper side of the electric ball valve, and a through hole for the water inlet sensor to insert is formed in the lower side of the electric ball valve. According to the invention, the electric ball valve, the electromagnetic flowmeter, the water inlet temperature sensor, the water return temperature sensor and a measurement control circuit are integrated to form a closed-loop feedback control system, constant-flow heat supply or constant-power heat supply of the heat supply system can be realized, and the heat supply control valve with the accurate metering function is the optimal product for achieving balance of a heat supply pipe network and reasonable heat distribution, and has very positive significance on energy conservation and consumption reduction of the heat supply system.

Description

technical field [0001] The invention relates to the technical field of control valves, in particular to a precisely metered heating control valve. Background technique [0002] The electric ball valve used in traditional heating is an executive control valve, which cannot realize closed-loop feedback control, so it cannot realize independent control of flow or power constant. If the traditional electric ball valve is used to achieve constant control of flow or power, it is necessary to An automatic controller is added on the basis of the sensor, which can be realized through a closed-loop algorithm. The traditional scheme has many auxiliary accessories, is easy to be damaged, and the structure is not compact. Therefore, the precise closed-loop control of the flow rate or heating power of a single household has not yet been realized in the heating industry. . [0003] For example, the Chinese patent CN 201382825 Y "New Heat Regulating Controller" discloses a heat regulating ...

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Problems solved by technology

[0002] The electric ball valve used in traditional heating is an executive control valve, which cannot realize closed-loop feedback control, so it cannot realize independent control of flow or power constant. If the traditional electric ball valve is used to achieve constant control of flow or power, it is necessary to An automatic controller is added on the basis of the sensor, which can be realized through a closed-loop algorithm. The traditional scheme has many auxiliary accessories, is easy to be damaged, and the structure is not compact. Therefore, the precise closed-loop control of the flow rate or heating power of a single household has not yet been realized in the heating industry.

[0003] For example, the Chinese patent CN 201382825 Y "New Heat Regulating Controller" discloses a heat regulating controller composed of a heat metering component and an electric regulating valve. An integrator is used to regulate the valve according to the temperature measured by the temperature sensor. Its working principle is the same as The above description is consistent, and the closed-loop algorithm is used to control the valve, and there are many auxiliary accessories and the structure is not compact, which is not conducive to large-scale promotion and use, and the later maintenance cost is high

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