Air volume measuring device for civil air defense engineering

Abstract

The utility model discloses an air volume measuring device for civil air defense engineering in the field of civil air defense engineering equipment, which comprises a cylinder body with two open ends, and is characterized in that a measuring mechanism and a linear driving mechanism are arranged on the outer side of the cylinder body, the measuring mechanism comprises a measuring rod extending into an inner cavity of the cylinder body, and the linear driving mechanism is connected with the measuring rod. The linear driving mechanism is used for driving the measuring rod to be close to or away from the center point of the cross section of the cylinder. According to the utility model, the measuring points can be changed, the average air volume value is calculated by measuring the ventilation quantity at different positions in the ventilation pipe for multiple times, and the accuracy is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of civil air defense engineering equipment, and particularly relates to an air volume measuring device for civil air defense engineering. Background Art

[0002] Civil air defense projects, also known as civil air defense projects, refer to underground protective buildings built separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue in wartime, as well as basements that can be used for air defense in wartime built in combination with ground buildings. In order to ensure the quality of the air environment inside the civil air defense project and give full play to the effectiveness of the protection project, corresponding ventilation and air conditioning measures must be adopted inside the project, and air volume measuring devices must be installed to detect the air volume at the ventilation point, so as to know the ventilation volume inside the civil air defense project and make corresponding measures to ensure the breathing needs and air quality of the people inside it.

[0003] The air volume measuring device in the prior art has only one ventilation hole at the probe on its detection rod, and its position is single and cannot be changed, so it can only calculate the ventilation volume by measuring the differential pressure at a single position in the ventilation duct. The measurement results are not accurate and there are large errors, which prevents the inspection personnel from truly understanding the ventilation conditions inside the civil air defense project. Utility Model Content

[0004] The purpose of the utility model is to provide an air volume measuring device for civil air defense projects, which can change the measuring point and calculate the average air volume value by measuring the ventilation volume at different positions in the ventilation duct multiple times with high accuracy.

[0005] The purpose of the utility model is achieved as follows: a wind volume measuring device for civil air defense projects, comprising a cylinder with openings at both ends, a measuring mechanism and a linear drive mechanism being arranged on the outside of the cylinder, the measuring mechanism comprising a measuring rod extending into the inner cavity of the cylinder, and the linear drive mechanism being used to drive the measuring rod close to or away from the center point of the cross section of the cylinder.

[0006] When using this utility model, the cylinder is mounted on the ventilation duct where air volume measurement is required. The linear drive mechanism adjusts the position of the measuring rod within the cylinder to change the measurement point. Because the measuring rod always points toward the center of the cylinder's cross-section, measurement data can be obtained from multiple measuring points located in the same direction and at different distances from the center of the cylinder's cross-section. Compared to existing technologies, this utility model has the beneficial effect of resolving the problem of inaccurate measurement data caused by uneven wind speed / air volume distribution within the ventilation duct. The measurement point in this device can be adjusted based on the diameter of the ventilation duct, providing greater flexibility and applicability.

[0007] As a further improvement of the present invention, the linear drive mechanism includes a driving cylinder, the cylinder body of the driving cylinder is arranged on a fixed plate, the end of the piston rod is coaxially arranged with the upper end of the measuring rod through a coupling, the fixed plate is supported on a mounting seat through a number of support columns, the mounting seat is provided with a through hole corresponding to the moving direction of the measuring rod, the through hole is provided with multiple mounting grooves along its length direction, and a sealing ring is provided in the mounting groove.

[0008] As a further improvement of the present invention, a self-sealing linear bearing is provided on the mounting seat, and the linear bearing is slidably connected to the measuring rod.

[0009] As a further improvement of the present invention, a protective shell is provided corresponding to the outer sides of the fixing plate and the mounting seat.

[0010] As a further improvement of the present invention, the measuring mechanism also includes a transmitter and a display, the measuring rod includes a hollow light rod and an air volume sensor arranged at the lower end of the light rod, the air volume sensor is electrically connected to the transmitter, and the transmitter is electrically connected to the display.

[0011] As a further improvement of the present invention, the transmitter is arranged on the inner wall of the protective shell, and the display is arranged on the outer side of the protective shell.

[0012] As a further improvement of the present invention, mounting components are provided at both ends of the cylinder.

[0013] As a further improvement of the present invention, the cross section of the cylinder is a rectangular structure, and the mounting assembly includes four rectangular mounting strips connected to each other at the front, and a plurality of mounting holes are provided on the mounting strips.

[0014] As a further improvement of the present invention, the cross section of the cylinder is a circular structure, and the mounting assembly includes a flange plate, and a flange hole is provided on the flange plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the present utility model.

[0016] Figure 2 It is a top view of the utility model.

[0017] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0018] Figure 4 This is a partial structural diagram of another embodiment of the present invention.

[0019] Among them, 1 cylinder, 2 mounting assembly, 201 mounting bar, 202 mounting hole, 203 flange, 3 measuring rod, 301 polished rod, 302 air volume sensor, 4 transmitter, 5 display, 6 driving cylinder, 7 fixing plate, 8 coupling, 9 support column, 10 mounting seat, 1001 through hole, 1002 mounting groove, 11 protective shell, 12 sealing ring, 13 linear bearing. DETAILED DESCRIPTION

[0020] like Figure 1-3 As shown, a wind volume measuring device for civil air defense projects includes a cylinder 1 with openings at both ends, and the cross-section of the cylinder 1 is a rectangular structure; mounting components 2 are provided at both ends of the corresponding cylinder 1; a measuring mechanism and a linear drive mechanism are provided on the outside of the cylinder 1, and the measuring mechanism includes a measuring rod 3 extending into the inner cavity of the cylinder 1, a transmitter 4 and a display 5. Specifically, the measuring rod 3 includes a hollow light rod 301 and a capacitive wind volume sensor 302 arranged at the lower end of the light rod 301, the wind volume sensor 302 is electrically connected to the transmitter 4, and the transmitter 4 is electrically connected to the display 5; the linear drive mechanism is used to drive the wind volume sensor 302 close to or away from the center point of the cross-section of the cylinder 1.

[0021] In this embodiment, the linear drive mechanism includes a driving cylinder 6, the cylinder body of the driving cylinder 6 is arranged on a fixed plate 7, the end of the piston rod of the driving cylinder 6 is coaxially arranged with the upper end of the measuring rod 3 through a coupling 8, the fixed plate 7 is supported on the mounting seat 10 by four support columns 9 distributed in a rectangular shape, and a protective shell 11 is provided on the outer side of the corresponding fixed plate 7 and the mounting seat 10; the mounting seat 10 is provided with a through hole 1001 corresponding to the moving direction of the measuring rod 3, and the through hole 1001 is provided with two mounting grooves 1002 along its length direction. The mounting grooves 1002 are provided with a plurality of mounting grooves 1002. A sealing ring 12 is provided inside to ensure the sealing performance of the cylinder 1 to improve the accuracy of measurement; in order to improve the accuracy and stability of the movement of the air volume sensor 302, a self-sealing linear bearing 13 is provided on the mounting seat 10, and the linear bearing 13 is slidably connected to the measuring rod 3; the transmitter 4 is arranged on the inner wall of the protective shell 11, and the display 5 is arranged on the outside of the protective shell 11; the mounting assembly 2 includes four rectangular mounting bars 201 connected in the first position, and three mounting holes 202 for connecting to the ventilation pipe are opened on the mounting bar 201.

[0022] In other embodiments of the present invention, Figure 4 As shown, the cross section of the cylinder 1 is a circular structure, the mounting assembly 2 includes a flange 203 with a flange hole; the bottom of the mounting seat 10 is an arc-shaped structure, and a fixing hole for accommodating the linear bearing 13 is opened on the upper side.

[0023] Capacitive air volume sensor 302 consists of a capacitor and a coil. When wind blows through sensor 302, the capacitance of the capacitor changes due to the wind flow, generating an electrical signal. This signal is detected and recorded by transmitter 4, generating air volume data. The resulting data is displayed on display 5, facilitating monitoring by observers. Advantages of this device include a compact structure, real-time display of measurement results, high airtightness, and stable performance.

[0024] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, technicians in this field can make some substitutions and deformations of some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present invention.

Claims

1. A wind volume measuring device for civil air defense engineering, comprising a cylinder with openings at both ends, characterized in that: A measuring mechanism and a linear drive mechanism are provided on the outside of the cylinder. The measuring mechanism includes a measuring rod extending into the inner cavity of the cylinder. The linear drive mechanism is used to drive the measuring rod to approach or move away from the center point of the cross section of the cylinder.

2. The air volume measuring device for civil air defense engineering according to claim 1, characterized in that: The linear drive mechanism includes a driving cylinder, the cylinder body of the driving cylinder is set on a fixed plate, the end of its piston rod is coaxially arranged with the upper end of the measuring rod through a coupling, the fixed plate is supported on a mounting seat through a number of support columns, the mounting seat is provided with a through hole corresponding to the moving direction of the measuring rod, the through hole is provided with multiple mounting grooves along its length direction, and a sealing ring is provided in the mounting groove.

3. The air volume measuring device for civil air defense engineering according to claim 2, characterized in that: A self-sealing linear bearing is provided on the mounting seat, and the linear bearing is slidably connected to the measuring rod.

4. The air volume measuring device for civil air defense engineering according to claim 2, characterized in that: A protective shell is provided corresponding to the outer sides of the fixing plate and the mounting seat.

5. The air volume measuring device for civil air defense engineering according to claim 1 or 4, characterized in that: The measuring mechanism further includes a transmitter and a display. The measuring rod includes a hollow polished rod and an air volume sensor arranged at the lower end of the polished rod. The air volume sensor is electrically connected to the transmitter, and the transmitter is electrically connected to the display.

6. The air volume measuring device for civil air defense engineering according to claim 5, characterized in that: The transmitter is arranged on the inner wall of the protective shell, and the display is arranged on the outer side of the protective shell.

7. The air volume measuring device for civil air defense engineering according to claim 1, characterized in that: Mounting components are provided at both ends of the cylinder.

8. The air volume measuring device for civil air defense engineering according to claim 7, characterized in that: The cross section of the cylinder is a rectangular structure. The mounting assembly includes four rectangular mounting strips connected to each other at the front. A plurality of mounting holes are provided on the mounting strips.

9. The air volume measuring device for civil air defense engineering according to claim 7, characterized in that: The cross section of the cylinder is a circular structure, and the mounting assembly includes a flange plate, and a flange hole is opened on the flange plate.

Images