Wall-mounted differential pressure measuring device

Abstract

The invention discloses a wall-mounted micro-differential pressure measuring device. The wall-mounted micro-differential pressure measuring device comprises a water channel (1); a pressure measuring pipe (2); a wall-mounted board (3) and a frame (4), which are arranged vertically; a fixing shaft (6); and a leveling mechanism (7). The water channel (1) and the pressure measuring pipe (2) are fixedly disposed in the frame (4), and the bottom part of the water channel (1) is parallel to the lower frame (42) of the frame (4). The upper frame (41) of the frame (4) is also fixedly provided with a leveling device (5), which is parallel to the upper frame (41). The fixing shaft (6) is vertical to the wall-mounted board (3), and one end of the fixing shaft (6) is fixedly connected with the wall-mounted board (3). A part of the leveling mechanism (7) is connected with the wall-mounted board (3), and another part is connected with the frame (4), and then the end of the frame (4) can move upwards and downwards. The wall-mounted micro-differential pressure measuring device has advantages of convenient installation and arrangement, high measuring precision, and simple and fast operation.

Description

technical field [0001] The invention belongs to the technical field of pressure measuring devices, in particular to a wall-mounted micro pressure difference measuring device with high measurement accuracy and simple and quick operation. Background technique [0002] For projects with airtight requirements, such as civil air defense projects, it is necessary to measure the air pressure difference in many parts. For example, in order to ensure the overpressure value in the project, it is necessary to install a pressure difference measurement device in the three-proof duty room, and one end is connected to the overpressure test tube. , the other end communicates with the room; in order to monitor the filtration resistance of the coarse filter, it is necessary to install a differential pressure measuring device in the coarse filter chamber to monitor the air pressure difference before and after the coarse filter to determine whether to clean or replace the coarse filter. And som...

AI Technical Summary

Problems solved by technology

[0013] However, since the tilting micromanometer needs to adjust the level of the wide-mouth water tank and the scale of the piezometric tube to zero before use, the operation is complicated and the reading is slow, which cannot meet the requirements of rapid pressure regulation; moreover, it is large in size and must have an installation platform In use, it is greatly restricted by the flatness of the site, the zero adjustment range is small, and leakage and blockage often occur in parts such as multi-directional valves, which makes the operation and use complicated.

[0014] Therefore, there are problems in the prior art: the installation and use of the micro-pressure difference measuring device are inconvenient, and it is difficult to meet the requirements for quick and easy monitoring of the micro-pressure difference

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