Quotation of Zhejiang Baolun central air conditioning HVAC electric dynamic balance valve manufacture

Zhejiang Baolun valve professional production product name: dynamic balance valve
Technical specification: 1
Nominal pressure: 1
6Mpa; 2
Working medium: water, oil and steam; 3
Operating temperature: -20 ℃ ≤ t≤ 120℃； 4
The test pressure shall comply with iso5208 standard; 5
Cylindrical pipe thread conforms to iso228 standard; 6
Valve material: Brass
Product Description: the dynamic balance valve is an intuitive and simple flow regulation control device
The valve can be used in the pipe network to set the flow directly according to the design
The valve can automatically eliminate the flow deviation caused by the residual head and pressure fluctuation of the pipeline under the action of water
The set flow remains unchanged no matter how the system pressure changes
These functions of the valve enable the pipe network flow regulation to be completed at one time, Change the network adjustment work into simple flow distribution, and effectively solve the hydraulic imbalance of the pipe network
The dynamic balance valve is mainly used in central heating (cooling) and other water systems to distribute the flow of the pipe network as required, eliminate the hydraulic imbalance of the water system, solve the problem of uneven cooling and heating, and save energy and electricity by 15%-20%

Structure type: the valve is mainly composed of valve body, upper and lower covers, automatic regulating valve disc, manual regulating valve disc, diaphragm and spring

Working principle: the dynamic balance valve is composed of two parts: automatic regulating valve disc and manual regulating valve disc
The working pressure of the system fluid is P1, and the front and rear pressures of the manually adjusted valve clack are P2 and P3 respectively
When the manual regulating valve disc is adjusted to a certain position, the “ Set flow ”, And the corresponding fixed (P2-P3) value
When the system flow increases by Da, the actual value of (P2-P3) exceeds the allowable given value, at this time, the automatic regulating valve disc will automatically close until the flow is maintained to the set flow again, and vice versa

Design and type selection: 1
Generally, dynamic balance valves shall be designed and installed at the branch points, hot inlets and indoor risers of the pipe network Da to improve the system regulation performance
2
For selection, refer to (table of main external dimensions and performance parameters) and (model selection drawing of self operated balance valve)
The design flow shall be selected in the blackened part of the drawing
3
The dynamic balance valve can be installed on the water supply pipe or the return pipe
When the working pressure of the system fluid exceeds the allowable working pressure of the radiator, the dynamic balance valve should be installed on the water supply pipe for the sake of safety
4
Zui high service temperature 100 ℃, nominal pressure 1
6Mpa
5
Applicable differential pressure range: 20 ~ 300kPa
When the working pressure difference of system fluid exceeds 300kPa, measures shall be taken to consume the residual pressure difference to prevent noise
6
The dynamic balance valve has no shut-off function, and another shut-off valve shall be set as required
7
The dynamic balance valve with diameter of DN15 ~ DN25 shall be selected, and the connection mode shall be indicated

Product features: 1 It can automatically balance the system flow at the required set value; 2
it can automatically eliminate the hydraulic imbalance caused by various factors in the water system, maintain the flow required by users, and overcome “ Uneven heat and cold ”, Improve the room temperature qualification rate of heating and air conditioning; 3
effectively overcome “ Da flow, small temperature difference ” To improve the energy efficiency of the system and realize economic operation
4
it has excellent electric regulation function: the electric regulation function means that the valve can automatically adjust the opening of the valve according to the change of the temperature control signal in the target area, so as to change the water flow, and finally make the actual temperature in the target area consistent with the set temperature
The flow characteristic curve of the electric control valve is used to evaluate the electric control function
In the air conditioning system, the ideal flow characteristic curve of the commonly used electric control valve is linear or equal percentage
However, for the general electric control valve, the actual flow characteristic curve deviates from the ideal flow characteristic curve due to the small valve weight in the actual use process
As shown in Figure 3, the ideal flow characteristic curve of an electric control valve is linear (curve 1), but the actual flow characteristic curve is close to the quick opening type (curve 2) after it is installed on the system pipeline, and the regulation characteristic becomes worse
Due to the unique valve body structure, the valve weight of the dynamic balance electric control valve is basically 1 in the actual application project, so its actual flow characteristic curve is consistent with the ideal flow characteristic curve without deviation, so it has excellent electric control function
5
it has the dynamic balance function: the dynamic balance function refers to that when the electric control valve liner is adjusted to a certain opening according to the load change of the terminal equipment, the valve can dynamically balance the resistance of the system regardless of the change of the system pressure, so that its flow can remain constant without the influence of the system pressure fluctuation
Jia is under the summer working condition, and zone 1 has been adjusted to the equilibrium state, that is, the temperature T1 in the target zone has stabilized at 25 ℃
At this time, the opening of the dynamic balance electric valve remains unchanged at a certain position to output a constant flow

Scope of application: urban construction, chemical industry, metallurgy, petroleum, Yao manufacturing, food, beverage, environmental protection

Product function: 1
Dynamic balance valve is used in water systems requiring flow control, especially for flow control of non corrosive liquid media such as heat supply and air conditioning
One time adjustment before operation can automatically keep the system flow constant at the required set value
2
Dynamic balance valve is a kind of valve with special functions
It has good flow characteristics
It has valve opening indication, opening locking device and small pressure measuring valve for flow measurement
Using the special intelligent instrument, input the valve model and opening value, and the flow through the balance valve can be directly displayed according to the measured differential pressure signal
As long as the balance valve with appropriate specifications is installed in each branch and user inlet, and the special intelligent instrument is used for one-time commissioning, the flow of each user can reach the set value