Control valve

Abstract

The invention discloses a regulating valve which comprises a valve body (11) and an electric regulating part. The electric regulating part comprises a valve element mounted in the valve body (11) and an actuator used for regulating the opening degree of the valve element. A first temperature sensor (12) arranged on a water inlet pipeline and a second temperature sensor (13) arranged on a water return pipeline are further included. The first temperature sensor (12) is used for detecting the temperature of input water. The second temperature sensor (13) is used for detecting the temperature of return water. The first temperature sensor (12) and the second temperature sensor (13) are both electrically connected with the actuator (14). A control device for controlling the opening degree of the valve element according to the difference value between the temperature of the input water and the temperature of the return water is arranged in the actuator (14). According to the regulating valve, the valve element can be controlled in real time according to the feedback temperature value, and thus the hydraulic power unbalance phenomenon existing in the system can be relieved better.

Description

technical field [0001] The invention relates to the technical field of valve structures, in particular to a regulating valve. Background technique [0002] Hydraulic imbalance is a common problem in heating or air conditioning systems. Due to the different flow resistance of each branch pipeline and the unreasonable selection of water pumps, the flow rate of each pipeline cannot fully meet the design value. This phenomenon is the phenomenon of hydraulic imbalance. [0003] In order to eliminate the influence of different branch pipeline resistances on the system and ensure that the flow rate of each branch pipeline meets the design requirements, static balancing valves are generally installed on the branch pipelines to balance the resistance difference of the branch pipelines. This method can achieve better results in the initial stage of project investment. However, the system is changing dynamically from time to time, and the resistance value of each branch will also cha...

AI Technical Summary

Problems solved by technology

However, the system is changing dynamically from time to time, and the resistance value of each branch will also change continuously, and the mutual interference between the loops will also have a huge impact on the flow of the pipeline.

Therefore, in order to reduce or eliminate this hydraulic imbalance, it is necessary to continuously debug the system, which is not only troublesome, but also takes a lot of time. More importantly, this adjustment is lagging behind. As a result, the hydraulic imbalance of the system exists at any time in actual use. Phenomenon

[0004] Based on the above problems, in order to simplify the adjustment process, the static balance valve can be replaced with an electric control valve, so as to adjust the pipeline by remotely controlling the action of the electric actuator, but this method still requires manual adjustment, resulting in system failure. There is still the problem of hydraulic imbalance

[0005] In addition, when the designer calculates the design flow rate of the branch, if he wants to get more accurate results, the parameters of the input calculation model must be completely accurate, but the actual situation is that some parameters do not have exact values ​​and can only be relied on by the designer. Estimated by experience, this results in that the calculated design value does not necessarily fully meet the needs of the actual situation, and then needs to correct the value in the subsequent debugging, which increases the program of system debugging

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