Wing Wind Measurement Device

HQ-JY wing wind measurement device, like other wind measurement devices, is a measuring tool for monitoring the combustion air volume of boilers. It can be used to measure the air flow of boilers. It can be directly installed on the cold and hot air ducts between the inlet of the air supply fan and the burner. Due to its unique structure, the requirements for the front straight pipe section are much lower than other measurement components during installation, and it is not easy to block. It is superior to other measurement components in terms of maintenance and repair, requirements for the cross-sectional shape of the air duct, and the influence on the airflow flow within a certain range before and after the device. This device can generate a pressure difference signal of 0-100mmH20 or larger, which is converted into a standard electrical signal (0-10mA or 4-20mA) by a differential pressure transmitter. The signal is stable. It can achieve safe and economical operation of boilers.

(1) This device has a unique wing shaped throttling element that can generate a large differential pressure signal, ensuring stable and reliable measurement; High precision.
(2) Adopting a dual wing or multi wing structure, the device itself has a short length and low requirements for the length of the front and rear straight pipe sections.
(3) Due to its streamlined design on the end face, the throttling element of this device has low fluid resistance and pressure loss, resulting in a pressure loss not exceeding 14% of the differential pressure value; Within the range of high flow rate (30%~10%), the measurement error is less than 2% of high flow rate.
(4) No movable parts, easy to install and maintain.

(1) Composition of wing wind measurement device:

The wing wind measurement device consists of wing sensors, valve groups, and differential pressure transmitters.

(2) Measurement principle of wing wind measurement device:

This device consists of a wing installed in a rectangular or circular air duct, a differential pressure measuring device, and a section of air duct. Each throttle line of the wing is divided into four sections, with three sections being arc-shaped plates with different curvature radii, and the fourth section being a straight plate. According to the principles of fluid mechanics, when the airflow in the air duct passes through the wing measuring device, as shown in Figure 1, it generates a flow around the wing surface and creates a pressure difference between stagnation point A and chord point B (B '). The pressure at point A is full pressure, and the pressure at chord point B (B ') is static pressure. Due to the contraction of the flow cross-section at B (B '), the static pressure decreases, resulting in a relatively large pressure difference between A and B (B'). There is a certain functional relationship between the pressure difference △ P and the airflow velocity V (or flow rate 0): V=f (OP.R)
V constant velocity, △ P pressure difference, R flow cross-sectional shrinkage ratio

4.  Specification Type:

Note: (1) Before selecting the product, perform flow calculation on the application software package. To verify the application scenario, complete parameter conditions are required;
         (2) Other special materials are optional, please contact the manufacturer directly for specific details.

5. Selection:

HQ-JY Selection Table for Wing Wind Measurement Devices

*The integrated pressure tapping valve, three valve group, and pressure tapping short pipe are welded to the flow body as a complete set for supply. The material of the pressure tapping short pipe/pressure tapping valve/three valve group is the same as that of the pressure tapping port (according to the on-site process requirements, the pressure tapping valve can choose socket welded globe valve, socket welded gate valve or other types and materials of valves). The matching flange material is the same as that of the on-site pipeline material, and the transmitter is matched according to user needs.
**The split type does not include all installation accessories. When ordering, it should be matched according to user needs, and the matching flange material should be the same as the on-site pipeline material.