CN219063715U

CN219063715U - Gravity type pressure-stabilizing air supply outlet structure

Info

Publication number: CN219063715U
Application number: CN202220989002.8U
Authority: CN
Inventors: 张博越
Original assignee: Hangzhou Youxin Energy Saving Technology Co ltd
Current assignee: Hangzhou Youxin Energy Saving Technology Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2023-05-23
Anticipated expiration: 2032-04-15

Abstract

The utility model discloses a gravity type pressure-stabilizing air supply outlet structure, which comprises a shell, an operation door handle, an air valve executing mechanism, air valve blades, an air valve connecting rod, a plurality of shutter shafts, a plurality of gravity adjustable shutters and the like, wherein the air valve blades and the gravity adjustable shutters; the shutter shaft is fixed on the shell along the horizontal direction; when the pressure difference exists on two sides of the shutter, the gravity adjustable shutter can rotate around the shutter shaft at a certain angle; the gravity adjustable louver can adjust the gravity moment to change the local resistance coefficient, thereby realizing automatic pressure-stabilizing air supply with variable air volume. The utility model has low cost, simplicity, reliability, safety and durability, can simultaneously meet the requirements of smoke prevention and safe evacuation, and makes up the defects of the current practice.

Description

Gravity type pressure-stabilizing air supply outlet structure

Technical Field

The utility model relates to an air supply outlet, in particular to a gravity type pressure-stabilizing air supply outlet structure.

Background

The air supply opening is a terminal air supply component in a building front chamber (comprising a smoke-proof stairwell front chamber, a fire-fighting elevator front chamber and a combined front chamber) or a fire-fighting refuge room mechanical pressurizing air supply smoke-proof system. The air supply outlets are arranged on each layer, are normally closed, and are opened when fire breaks out. The air supply quantity of the air conditioner meets two requirements at the same time: firstly, maintaining a certain residual pressure between a front chamber or a fire refuge room and a pavement, wherein the minimum pressure is usually 25-30 Pa, and the maximum pressure is 50Pa (the specific value is related to the width of a fireproof door and the moment of a door closer, and the fireproof door is not easy to push open due to excessive residual pressure, so that safe evacuation is influenced); secondly, when the fireproof door entering the front room or the fire-fighting shelter is opened, the air quantity passes through the fireproof door at a designed air speed so as to prevent the smoke from entering the front room or the fire-fighting shelter. Because the opening area of the fireproof door is larger, the air quantity meeting the two requirements is quite different, and because the opening and closing states of the fireproof door are changed in a few seconds during fire, the fan of the mechanical pressurization air supply smoke prevention system is constant in rotating speed. For this purpose, the terminal air supply port is required to have flexible, rapid and variable air supply quantity.

In order to meet the fire-fighting requirements, the prior art has three engineering practices:

firstly, a bypass valve capable of adjusting air quantity is arranged at an outlet of a fan, a differential pressure sensor is arranged in each front chamber or between refuge chambers, the opening degree of the bypass valve is controlled according to the differential pressure, the air quantity of the fan is bypassed, and the air quantity of a system is changed to uniformly change the tail end air quantity; however, the bypass valve cannot respond quickly because the opening and closing of the fireproof door are quick and changeable; the ignition layer and the upper and lower layers can be different, and the requirement of the air supply quantity of a single tail end is necessarily different, so that the engineering practice can not meet the requirement of safety and smoke prevention.

Secondly, the blower and the air supply opening are all operated in a fixed state, a pressure relief residual pressure valve and a fire valve are arranged on the wall of the front chamber or the fire-fighting refuge room, and when the residual pressure of the front chamber or the fire-fighting refuge room exceeds the maximum value, the air quantity is automatically removed, and the residual pressure is reduced; the method can meet the requirements of safety and smoke prevention, but the residual pressure valve and the fireproof valve with larger section size are additionally arranged, so that the construction cost is increased.

Thirdly, an air supply port capable of electrically adjusting the air quantity is arranged in each front chamber or the refuge room, and a differential pressure sensor is used for controlling the opening of the air supply port capable of electrically adjusting the air quantity according to the differential pressure, so that the air supply quantity is adjusted, but the method has the defects of complex engineering cost, complex control system and slow electric adjustment response, and the engineering is not seen.

Disclosure of Invention

The utility model provides a gravity type pressure-stabilizing air supply outlet structure for solving the defects and shortcomings in the prior art. After the air port is opened, because of flexible and rapid dynamic air volume regulation characteristics, when the air feeder runs at a constant speed, the air supply quantity of the air supply port can simultaneously meet two requirements of smoke prevention and safe evacuation: firstly, maintaining a certain residual pressure of 25-50 Pa between a front chamber or a fire-fighting refuge room and a pavement; secondly, when the fire door is opened, the air quantity should pass through the fire door at the designed air speed.

The technical scheme of the utility model is as follows: the utility model provides a gravity type steady voltage supply-air outlet structure, includes casing, operation door handle, damper actuating mechanism, damper blade, damper connecting rod, a plurality of tripe axle, a plurality of gravity adjustable tripe etc. constitutes its characterized in that: from the air flow path, the air valve blades and the gravity adjustable louvers are in series connection; the shutter shaft is fixed on the shell along the horizontal direction, and when pressure difference exists on two sides of the shutter, the gravity adjustable shutter can rotate around the shutter shaft at a certain angle to adjust the airflow area so as to enable airflow to pass through; the gravity adjustable shutter can adjust gravity moment to change rotation resistance.

The utility model uses gravity to flexibly and rapidly adjust the local resistance coefficient of the air supply outlet, thereby adjusting the air supply quantity and meeting the requirements of smoke prevention and safe evacuation of a front chamber or a fire-fighting refuge room.

Preferably, from the perspective of the airflow path, the air valve blade is in series connection with the gravity adjustable shutter, and the airflow passes through the air valve blade and then flows through the gravity adjustable shutter.

In this structure, after the air valve blade is opened, the air flow is again adjusted by the louver.

The preferred shutter shaft is fixed to the housing in a plurality of horizontal directions, and the shutter shaft sleeve is hinged to the shutter shaft and is rotatable about the shutter shaft.

When the air valve blade is opened and pressure difference exists on two sides of the shutter, the shutter can rotate around the shutter shaft at a certain angle to adjust the air flow area so as to enable air flow to pass through.

Preferred gravity-adjustable louvers include: the gravity adjustable shutter blade, the shutter shaft sleeve, the adjusting rod, the fixing bolt, the gravity block and the gravity block fastening screw; the gravity adjustable shutter blade is fixedly connected with the shutter shaft sleeve, and the adjusting rod is fixed on the gravity adjustable shutter blade through a fixing bolt; the gravity block can slide along the adjusting rod and is locked in position by the gravity block set screw.

The structure can adjust the gravity moment to change the rotation resistance of the shutter around the shutter shaft.

The application method of the gravity type pressure-stabilizing air supply outlet structure comprises the following steps: after the installation, opening an air supply port according to the number and the positions required by design files and acceptance specifications, operating an air feeder, repeatedly and sequentially adjusting the positions of gravity blocks of the gravity adjustable louvers and locking; the device can meet the residual pressure requirement when the pressurized air supply space is closed, and can meet the design wind speed of the section of the door opening when the door is opened. When fire occurs, the blower operates, and the air valve actuating mechanism of the igniting layer and the upper and lower layers thereof acts to open the air valve blades to supply air to the front chamber or the fire-fighting refuge room.

The utility model is used as one of key components of a mechanical pressurizing air supply system of a front room or a fire shelter, has low cost, is simple, convenient and reliable, is safe and durable, does not have an additional complex control system, only needs to be checked and accepted for the first time, flexibly and quickly adjusts the air supply quantity by utilizing gravity, realizes automatic pressure-stabilizing air supply of variable air quantity, can simultaneously meet the requirements of smoke prevention and safe evacuation, and overcomes the defects of the current practice.

Drawings

FIG. 1 is a schematic front view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model in a closed position;

FIG. 3 is a schematic cross-sectional view of the present utility model in an open position;

FIG. 4 is a schematic view of a gravity-adjustable shutter according to the present utility model;

in the figure, the valve comprises a shell 1, a door handle 2, an operating door 3, a valve actuator 4, a valve blade 5, a valve connecting rod 6, a gravity adjustable shutter 7, a shutter shaft 8, a gravity adjustable shutter 7.1, a shutter shaft sleeve 7.2, an adjusting rod 7.3, a fixing bolt 7.4, a gravity block 7.5 and a gravity block set screw 7.6.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings, without limiting the scope of the utility model.

As shown in fig. 1 to 4, a gravity type pressure stabilizing air supply outlet structure includes: the air valve comprises a shell 1, an operation door 2, an operation door handle 3, an air valve actuating mechanism 4, three air valve blades 5 and an air valve connecting rod 6, wherein the air valve actuating mechanism 4 controls the angles of the three air valve blades 5 through the air valve connecting rod 6; six shutter shafts 6 are fixed on the shell 1 along the horizontal direction, six gravity adjustable shutters 7 are hinged on shutter shafts 8 through shutter shaft sleeves 7.2, and when pressure difference exists on two sides of the shutter shafts, the gravity adjustable shutters 7 can rotate around the shutter shafts 8 at a certain angle; the gravity-adjustable shutter 7 includes: the gravity adjustable louver blade 7.1 is fixedly connected to the louver She Zhoutao 7.2, the adjusting rod 7.3 is fixed on the gravity adjustable louver blade 7.1 through the fixing bolt 7.4, and the gravity block 7.5 can slide along the adjusting rod 7.3 and is locked in position by the gravity block set screw 7.6.

The application method of the gravity type pressure-stabilizing air supply outlet structure comprises the following steps: before the installation and acceptance, opening an air supply port according to the number and positions required by design files and acceptance specifications, operating an air feeder, and repeatedly and sequentially adjusting and locking the positions of gravity blocks of the gravity adjustable louvers; the device can meet the residual pressure requirement when the pressurized air supply space is closed, and can meet the design wind speed of the section of the door opening when the door is opened. When fire occurs, the blower operates, and the air valve actuating mechanism of the igniting layer and the upper and lower layers thereof acts to open the air valve blades to supply air to the front chamber or the fire-fighting refuge room.

The utility model is used as one of the key components of the mechanical pressurizing air supply system of the front room or the fire shelter, has low cost, is simple, convenient and reliable, is safe and durable, utilizes gravity to flexibly and rapidly adjust the air supply quantity, can simultaneously meet the requirements of smoke prevention and safe evacuation, and overcomes the defects of the current practice.

Claims

1. The utility model provides a gravity type steady voltage supply-air outlet structure, includes casing, operation door handle, damper actuating mechanism, damper blade, damper connecting rod, a plurality of tripe axle, a plurality of gravity adjustable tripe etc. constitutes its characterized in that: from the air flow path, the air valve blades and the gravity adjustable louvers are in series connection; the shutter shaft is horizontally fixed on the shell, the gravity adjustable shutter is hinged to the shutter shaft and can rotate around the shutter shaft at a certain angle to adjust the airflow flow area; the gravity adjustable louvers may adjust the gravity moment to vary the rotational resistance.

2. A gravity type regulated air supply structure according to claim 1, wherein: from the air flow path, the air valve blades and the gravity adjustable louvers are in series connection, and the air valve blades and the gravity adjustable louvers jointly regulate and adjust the air supply quantity.

3. A gravity type regulated air supply structure according to claim 1, wherein: the shutter shafts are horizontally fixed on the shell and serve as shafts for hanging, limiting and rotating around the gravity-adjustable shutter shafts.

4. A gravity type regulated air supply structure according to claim 1, wherein: the gravity-adjustable shutter includes: the gravity adjustable shutter blade is fixedly connected to the shutter She Zhoutao, the adjusting rod is fixed on the gravity adjustable shutter blade through a fixing bolt, and the shutter shaft sleeve is hinged to the shutter shaft and can rotate around the shutter shaft.

5. The gravity type pressure stabilizing air supplying outlet structure according to claim 4, wherein: the gravity block of the gravity adjustable shutter can slide along the adjusting rod and is used for adjusting the gravity moment, and the position is locked by the gravity block set screw.