Residual pressure monitoring system of positive pressure air supply system

Abstract

The utility model relates to the technical field of ventilation systems, and discloses a residual pressure monitoring system of a positive pressure air supply system, which comprises a plurality of groups of residual pressure detectors, a fan opening bypass valve, a plurality of groups of residual pressure controllers and a residual pressure monitor, the residual pressure detectors are conductively connected with the residual pressure controllers, and the residual pressure controllers are conductively connected with the residual pressure monitor; one side of each excess pressure detector is connected with a gas production seat, a plurality of groups of connected excess pressure detectors and gas production seats are respectively arranged in the front room and the aisle, and a plurality of groups of connected excess pressure detectors and gas production seats are respectively arranged in the front room and the staircase. Compared with the prior art, the device has the advantages that the device is widely applied to a front chamber differential pressure measurement and control system, a closed refuge storey differential pressure measurement and control system and a smoke-proof staircase differential pressure measurement and control system; a dry gas differential pressure measurement and control system such as an indoor and outdoor pressure difference detection system and a filter screen blockage monitoring system prevents harmful smoke from entering, ensures normal opening of the fireproof door and ensures smoothness of a life channel.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation systems, in particular to a residual pressure monitoring system for a positive pressure air supply system. Background Art

[0002] When a fire occurs in a building, the smokeproof stairwell, refuge corridor and its antechamber are life passages for personnel evacuation and passages for firefighters to fight fire, and their smokeproof performance requirements must be ensured. From the perspective of smoke prevention, the residual pressure value of the mechanical pressurized air supply system is too low, which is not conducive to smoke prevention, so the higher the residual pressure value, the better. However, since the direction of the evacuation door is to open in the direction of evacuation, and the direction of the pressurized air supply force is exactly opposite to the direction of the evacuation door opening, if the residual pressure value is too high, it will cause the pressure difference between the stairwell and the antechamber, and the antechamber and the corridor on both sides of the evacuation door to be too large, which will make it difficult to open the evacuation door, especially for the elderly and children, affecting the evacuation of personnel and the rescue of firefighters. Obviously, the design of the pressurized air supply system should first be based on safe evacuation. The whole purpose of the residual pressure monitoring system is to keep the residual pressure value of the stairwell and the antechamber within the national standard range, block the entry of harmful smoke, ensure the normal opening of the fire door, and ensure the smooth flow of life passages. Utility Model Content

[0003] 1. Technical Problems Solved

[0004] The technical problem to be solved by the utility model is to ensure the normal opening of the fire door while blocking the entry of harmful smoke.

[0005] 2. Technical Solution

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a residual pressure monitoring system of a positive pressure air supply system, comprising a plurality of residual pressure detectors, a fan bypass valve, a plurality of residual pressure controllers and a residual pressure monitor, wherein the residual pressure detectors are conductively connected to the residual pressure controllers, and the residual pressure controllers are conductively connected to the residual pressure monitors;

[0007] One side of the residual pressure detector is connected to a gas collection seat, and multiple groups of connected residual pressure detectors and gas collection seats are respectively installed in the front room and the corridor, and multiple groups of connected residual pressure detectors and gas collection seats are respectively installed in the front room and the stairwell.

[0008] As an improvement, a plurality of groups of the residual pressure controllers are respectively installed in the fan control box.

[0009] As an improvement, a PVC hose is connected between the residual pressure detector and the gas collection seat, and the PVC hose passes through a normally closed fire door.

[0010] 3. Beneficial Effects

[0011] Compared with the prior art, the advantages of the utility model are: the application is widely used in differential pressure measurement and control systems of antechambers (common antechambers), closed refuge floors, and smoke-proof stairwells; differential pressure measurement and control systems of dry gases such as indoor and outdoor pressure difference detection and filter blockage monitoring systems, which block the entry of harmful smoke while ensuring the normal opening of fire doors and the smooth flow of life passages. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a structural schematic diagram of a residual pressure monitoring system of a positive pressure air supply system.

[0013] Figure 2 The utility model is a schematic diagram of the installation structure of a residual pressure monitoring system of a positive pressure air supply system.

[0014] As shown in the figure: 1. Gas collection seat; 2. Residual pressure detector; 3. Open the fan bypass valve; 4. Residual pressure controller; 5. Residual pressure monitor; 6. PVC hose. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0016] Embodiment 1

[0017] As attached Figure 1 As shown, a residual pressure monitoring system of a positive pressure air supply system comprises a plurality of residual pressure detectors 2, a fan bypass valve 3, a plurality of residual pressure controllers 4 and a residual pressure monitor 5, wherein the residual pressure detectors 2 are conductively connected to the residual pressure controllers 4, the residual pressure controllers 4 are conductively connected to the residual pressure monitors 5, and the plurality of residual pressure controllers 4 are respectively installed in the fan control box;

[0018] One side of the residual pressure detector 2 is connected to a gas collection seat 1, and multiple groups of connected residual pressure detectors 2 and gas collection seats 1 are respectively installed in the front room and the corridor, and multiple groups of connected residual pressure detectors 2 and gas collection seats 1 are respectively installed in the front room and the stairwell.

[0019] Combined with Figure 2 As shown, a PVC hose 6 is connected between the residual pressure detector 2 and the gas collection seat 1, and the PVC hose 6 passes through the normally closed fire door.

[0020] The specific usage is as follows:

[0021] The gas collection seat 1 sends the collected gas to the corresponding residual pressure detector 2. The residual pressure detector 2 detects the pressure difference in real time and uploads it to the residual pressure controller 4. After the positive pressure air supply occurs in a fire, when the pressure difference between the current room and the corridor is greater than 30 Pa or when the pressure difference between the stairwell and the corridor is greater than 50 Pa, the residual pressure controller 4 outputs a control signal to open the fan bypass valve 3 to relieve pressure; when the pressure difference between the current room and the corridor is less than 25 Pa or when the residual pressure between the stairwell and the corridor is less than 40 Pa, a signal is sent to close the fan bypass valve 3 to stop pressure relief, keep the residual pressure value of the stairwell and the front room within the national standard range, block the entry of harmful smoke, ensure the normal opening of the fire door, and ensure the smooth flow of life passages.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0024] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A residual pressure monitoring system for a positive pressure air supply system, comprising a plurality of residual pressure detectors (2), a fan bypass valve (3), a plurality of residual pressure controllers (4) and a residual pressure monitor (5), characterized in that: The residual pressure detector (2) is electrically connected to the residual pressure controller (4), and the residual pressure controller (4) is electrically connected to the residual pressure monitor (5); One side of the residual pressure detector (2) is connected to a gas collection seat (1); multiple groups of the connected residual pressure detector (2) and the gas collection seat (1) are respectively installed in the front room and the corridor; multiple groups of the connected residual pressure detector (2) and the gas collection seat (1) are respectively installed in the front room and the stairwell.

2. The residual pressure monitoring system of a positive pressure air supply system according to claim 1, characterized in that: A plurality of groups of the excess pressure controllers (4) are respectively installed in the fan control box.

3. The residual pressure monitoring system of a positive pressure air supply system according to claim 1, characterized in that: A PVC hose (6) is connected between the residual pressure detector (2) and the gas collection seat (1), and the PVC hose (6) passes through a normally closed fire door.

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