Wartime ventilation device for indoor civil air defense engineering of building

Abstract

The wartime ventilation device comprises an air supply mechanism, a plurality of one-way ventilation pipes, a plurality of chemical defense filters and a plurality of protection sleeves, all the one-way ventilation pipes are arranged in the same direction and are sequentially connected end to end to form a closed pipeline, and the air supply mechanism is arranged at the air supply end of the closed pipeline formed by the one-way ventilation pipes in the ventilation direction; the chemical defense filter is arranged between the one-way ventilation pipes, the protection sleeve is made of a flexible energy-absorbing material and arranged on the outer surface of the one-way ventilation pipe, the one-way ventilation pipe is an integrally-formed rigid pipe, and one-way circulation of the one-way ventilation pipe is achieved by adjusting the positive and negative fluidity ratio in the pipe. The one-way valve is of an integral structure, the valve body is not provided with a fixed or movable connecting assembly, the one-way valve is not prone to damage under extreme conditions, device failure is avoided, and the requirement for isolation of outside air and air inside civil air defense engineering is effectively met. Meanwhile, a multi-section structure is adopted, so that the problem of integral ventilation failure caused by single-section damage is avoided.

Description

Technical Field

[0001] The invention relates to the field of civil air defense projects, and in particular to a wartime ventilation device for civil air defense projects in indoor buildings. Background Art

[0002] Civil air defense projects are also called civil air defense projects. They refer to underground protective buildings built separately to ensure the shelter of personnel and materials, civil air defense command, and medical rescue during wartime, as well as basements built in combination with ground buildings that can be used for air defense during wartime. In general, civil air defense projects need to be equipped with ventilation equipment to facilitate air flow in the space. Since the external ambient air in its use scenario is likely to be polluted, ventilation equipment in the exhaust direction needs to be isolated from the external air.

[0003] The existing air isolation method is to use a one-way valve to restrict the one-way flow of gas in the exhaust direction, but the one-way valve currently used often works based on a combination of multiple mechanical parts, and the failure of any part may cause the failure of the entire one-way valve. In the use scenario of civil air defense projects, the ventilation system often faces more extreme use scenarios, so the use of multiple parts will cause a higher risk of device failure.

[0004] There is a need for a wartime ventilation device for indoor civil air defense projects in buildings to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the problem that the existing air isolation method in the prior art is to use a one-way valve to restrict the one-way flow of gas in the exhaust direction, but the one-way valves currently used are often based on the combination of multiple mechanical components, and the failure of any part may cause the failure of the overall operation of the one-way valve. In the use scenarios of civil air defense projects, the ventilation system often faces more extreme usage scenarios, so the use of multiple parts combinations will cause a higher risk of device failure. A wartime ventilation device for indoor civil air defense projects in buildings is provided, which adopts a one-way valve ventilation mechanism without moving parts to solve the above problems.

[0006] The present invention provides a wartime ventilation device for indoor civil air defense projects in buildings, comprising an air supply mechanism, a plurality of one-way ventilation pipes, a plurality of chemical defense filters and a plurality of protective covers, wherein the one-way ventilation pipes are arranged in the same direction and the ends are connected in sequence to form a closed pipe, the air supply mechanism is arranged at the air supply end in the ventilation direction of the closed pipe composed of the one-way ventilation pipes, the chemical defense filters are arranged between the one-way ventilation pipes, the protective covers are made of flexible energy-absorbing material and are arranged on the outer surface of the one-way ventilation pipe, the one-way ventilation pipe is an integrally formed rigid pipe, and the one-way ventilation pipe realizes one-way circulation by adjusting the positive and negative fluidity ratio in the pipe.

[0007] The wartime ventilation device for indoor civil air defense projects in buildings described in the present invention is, as a preferred embodiment, a one-way ventilation pipe comprising a rotating body shell and a plurality of one-way ventilation ducts, each of which is evenly arranged inside the rotating body shell in a radial direction, and the flow direction of the one-way ventilation duct is parallel to the axial direction of the rotating body bridge.

[0008] The wartime ventilation device for indoor civil air defense engineering of a building described in the present invention is, as a preferred embodiment, a one-way ventilation duct consisting of a plurality of flow sections connected end to end;

[0009] The circulation section includes a first forward channel, a second forward channel and a guide channel. The first forward channel and the second forward channel are both straight channel structures. One end of the second forward channel is connected to the side wall of the first forward channel. The axes of the first forward channel and the second forward channel intersect. The guide channel is a curved channel structure. One end of the guide channel is connected to the end portion of the first forward channel on the side of the angle with the second forward channel, and the other end of the guide channel is connected to the side wall of the second forward channel. The arc-shaped opening of the guide channel is toward the angle direction between the first forward channel and the second forward channel.

[0010] The wartime ventilation device for indoor civil air defense projects in buildings described in the present invention is, as a preferred embodiment, a ratio of the difference between the pressure at the free end of the first forward channel and the pressure at the connection position between the guide channel and the second forward channel to the difference between the pressure at the free end of the second forward channel and the pressure at the free end of the first forward channel is 1.3.

[0011] The wartime ventilation device for indoor civil air defense projects in a building described in the present invention is, as a preferred embodiment, a one-way ventilation duct that is a rotating body cavity with an angle of less than 120 degrees.

[0012] The circulation section realizes circulation by flowing from the second positive channel to the first positive channel. When flowing from the first positive channel to the second positive channel, according to the flow direction of the fluid, the main fluid will first pass through the bend and then enter the straight channel. At this time, the flow directions in the straight channel and the bend are opposite. When in contact, the two airflows collide to realize one-way flow stopping.

[0013] The beneficial effects of the present invention are as follows:

[0014] The one-way valve of this device is an integral structure. The valve body itself does not have fixed or movable connection components. It is not easy to be damaged under extreme conditions, avoiding device failure, and effectively meeting the isolation of external air and internal air of civil air defense projects. At the same time, a multi-stage structure is adopted to avoid the problem of overall ventilation failure caused by single-stage damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a wartime ventilation device for indoor civil air defense projects in a building;

[0016] Figure 2 A schematic diagram of a one-way ventilation pipe of a wartime ventilation device for indoor civil air defense engineering in a building;

[0017] Figure 3 A schematic diagram of a one-way ventilation duct of a wartime ventilation device for indoor civil air defense engineering in a building;

[0018] Figure 4 It is a schematic diagram of the flow section of a wartime ventilation device used in indoor civil air defense projects in buildings.

[0019] Reference numerals:

[0020] 1. Air supply mechanism; 2. One-way ventilation pipe; 21. Rotating body shell; 22. One-way ventilation duct; 221. Flow joint; 2211. First forward channel; 2212. Second forward channel; 2213. Guide channel; 3. Chemical protection filter; 4. Protective cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1

[0023] like Figure 1 As shown, a wartime ventilation device for indoor civil air defense projects in buildings comprises an air supply mechanism 1, a plurality of one-way ventilation pipes 2, a plurality of chemical defense filters 3 and a plurality of protective sleeves 4. The one-way ventilation pipes 2 are arranged in the same direction and the ends are connected in sequence to form a closed pipe. The air supply mechanism 1 is arranged at the air supply end in the ventilation direction of the closed pipe composed of the one-way ventilation pipes 2, the chemical defense filters 3 are arranged between the two one-way ventilation pipes, the protective sleeve 4 is a flexible energy-absorbing material, and is arranged on the outer surface of the one-way ventilation pipe 2. The one-way ventilation pipe 2 is an integrally formed rigid pipe, and the one-way ventilation pipe 2 realizes one-way flow by adjusting the positive and negative fluidity ratio in the pipe.

[0024] like Figure 2 As shown, the one-way ventilation pipe 2 includes a rotating body shell 21 and a plurality of one-way ventilation channels 22. Each one-way ventilation channel 22 is evenly arranged inside the rotating body shell 21 in the radial direction, and the flow direction of the one-way ventilation channel 22 is parallel to the axial direction of the rotating body bridge.

[0025] like Figure 3 As shown, the one-way ventilation passage 22 is composed of a plurality of flow sections 221 connected end to end;

[0026] like Figure 4As shown, the circulation joint 221 includes a first forward channel 2211, a second forward channel 2212 and a guide channel 2213. The first forward channel 2211 and the second forward channel 2212 are both straight channel structures. One end of the second forward channel 2212 is connected to the side wall of the first forward channel 2211. The axes of the first forward channel 2211 and the second forward channel 2212 intersect. The guide channel 2213 is a curved channel structure. One end of the guide channel 2213 is connected to the side end of the first forward channel 2211 at an angle with the second forward channel 2212, and the other end of the guide channel 2213 is connected to the side wall of the second forward channel 2212. The arc-shaped opening of the guide channel 2213 is toward the direction of the angle between the first forward channel 2211 and the second forward channel 2212. The ratio of the pressure difference between the free end of the first forward channel 2211 and the pressure at the connection position between the guide channel 2213 and the second forward channel 2212 to the pressure difference between the free end of the second forward channel 2212 and the free end of the first forward channel 2211 is 1.3. The one-way ventilation channel 22 is a rotating body cavity with an angle of less than 120 degrees.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wartime ventilation device for indoor civil air defense projects in buildings, characterized in that: The invention comprises an air supply mechanism (1), a plurality of one-way ventilation pipes (2), a plurality of chemical protection filters (3) and a plurality of protective sleeves (4); the one-way ventilation pipes (2) are arranged in the same direction and the ends are connected in sequence to form a closed pipe; the air supply mechanism (1) is arranged at the air supply end of the closed pipe in the ventilation direction formed by the one-way ventilation pipes (2); the chemical protection filters (3) are arranged between the one-way ventilation pipes (2); the protective sleeves (4) are made of flexible energy-absorbing material and are arranged on the outer surface of the one-way ventilation pipes (2); the one-way ventilation pipes (2) are integrally formed rigid pipes; and the one-way ventilation pipes (2) achieve one-way flow by adjusting the positive and negative flow ratios in the pipes.

2. A wartime ventilation device for indoor civil air defense engineering in a building according to claim 1, characterized in that: The one-way ventilation pipe (2) comprises a rotating body shell (21) and a plurality of one-way ventilation channels (22), each of the one-way ventilation channels (22) being evenly arranged inside the rotating body shell (21) in a radial direction, and the flow direction of the one-way ventilation channels (22) is parallel to the axial direction of the rotating body bridge.

3. A wartime ventilation device for indoor civil air defense engineering in a building according to claim 2, characterized in that: The one-way ventilation passage (22) is composed of a plurality of flow joints (221) connected end to end; The circulation joint (221) comprises a first forward channel (2211), a second forward channel (2212) and a guide channel (2213); the first forward channel (2211) and the second forward channel (2212) are both straight channel structures; one end of the second forward channel (2212) is connected to the side wall of the first forward channel (2211); the axes of the first forward channel (2211) and the second forward channel (2212) intersect; the guide channel (2213) is a curved channel structure; one end of the guide channel (2213) is connected to the end portion of the first forward channel (2211) on the side at an angle with the second forward channel (2212); the other end of the guide channel (2213) is connected to the side wall of the second forward channel (2212); the arc-shaped opening of the guide channel (2213) faces the direction of the angle between the first forward channel (2211) and the second forward channel (2212).

4. A wartime ventilation device for indoor civil air defense engineering in a building according to claim 3, characterized in that: The ratio of the difference between the pressure at the free end of the first forward channel (2211) and the pressure at the connection position between the guide channel (2213) and the second forward channel (2212) to the difference between the pressure at the free end of the second forward channel (2212) and the pressure at the free end of the first forward channel (2211) is 1.

3.

5. The wartime ventilation device for indoor civil air defense engineering of a building according to claim 3, characterized in that: The one-way ventilation passage (22) is a rotating cavity with an angle of less than 120 degrees.

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