CN212104877U

CN212104877U - Novel prevent stairwell of discharging fume

Info

Publication number: CN212104877U
Application number: CN201922111565.8U
Authority: CN
Inventors: 梁霄; 王晶晶; 杨海军; 周东锋; 宋学涛
Original assignee: Henan Zhaoyang Architectural Design Ltd
Current assignee: Henan Zhaoyang Architectural Design Ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-12-08
Anticipated expiration: 2029-11-30

Abstract

The utility model provides a novel prevent between stair of discharging fume, including one stair go up stair and one underground stair down, one stair go up stair are settled directly over one underground stair down, are equipped with on one stair one side and prevent fire door, prevent that fire door is equipped with at the back and turn to the platform, turn to platform one end intercommunication and prevent discharging fume the fixed window, turn to platform other end intercommunication one underground stair down, one underground stair down intercommunication basement, prevent that fire door the top is equipped with two stairs up, two stairs up intercommunication two floors, the utility model discloses can separate with one floor's stair independently through the stair with the basement, prevent that flue gas and flame from stretching the upper portion floor of building.

Description

Novel prevent stairwell of discharging fume

Technical Field

The utility model relates to a fire control technical field that discharges fume, concretely relates to novel prevent discharging fume stairwell.

Background

In recent years, China has raised the trend of rapid urbanization development, a large number of agricultural population and land are transformed into non-agricultural urban cities, and the urban area and population are increasing. The urban residents in China are also changed from a dispersed low-density dwelling form to a concentrated high-density dwelling form, with the rapid rise of the land price of urban residents, the residential building is developed to a three-dimensional state, and the high-rise building grows up like spring shoots after rain.

The stairwell is a junction for connecting up and down traffic, when a building is in fire, the indoor temperature rises rapidly, and a large amount of high-temperature toxic gas is released, so that personnel and materials in the building are in an extremely dangerous environment, and the stairwell is used as an escape passage for safe evacuation, and is an important content of the fireproof design of the building. For the staircase at the junction of the underground layer and the overground layer, if effective separation is not carried out, the fire of the underground layer is easy to spread to the upper floor of the building, therefore, in order to prevent smoke and flame from spreading to the upper floor of the building, a fire partition wall and a second-level fire door with the fire-proof and fire-resistant limits not less than 2 hours are arranged at the first floor of the staircase to completely separate the communication part between the ground and the underground part.

According to the technical standard of building smoke exhaust systems GB51251-2017 item 321, an openable outer window or an opening with the area not less than 1 square is arranged at the highest part of a closed staircase and a smoke-proof staircase adopting a natural ventilation mode; when the building height is not more than 10m, openable external windows or openings with the total area not less than 2 square should be arranged in every 5 floors of the outer wall of the staircase, and the arrangement interval is not more than 3 floors. "

According to technical Standard of building Smoke evacuation prevention and control systems GB51251-2017 article 3.311: the top of the closed stairway and the smoke-proof stairway provided with the mechanical pressurization air supply system is provided with a fixed window with the area not less than 1 square, and the smoke-proof stairway close to the outer wall is provided with fixed windows with the total area not less than 2 square in every five layers on the outer wall.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a novel prevent smoke exhaust stairwell.

The purpose of the utility model is realized with the following mode:

the utility model provides a novel prevent stairwell of discharging fume, includes that one-storey stairs and underground one-storey stairs down, one-storey stairs settle directly over underground one-storey stairs down, is equipped with on one-storey stairs one side and prevents fire door, prevent that fire door is equipped with at the back and turn to the platform, turn to platform one end intercommunication and prevent discharging fume fixed window, turn to platform other end intercommunication underground one-storey stairs down, underground one-storey stairs down intercommunication basement, prevent that fire door the top is equipped with two-storey stairs up, two-storey stairs up intercommunication two-storey.

The steering platform is on the ground of the first floor.

The stair upstairs is connected with a rest platform at the uppermost part, one end of the rest platform is connected with the stair upstairs, and one end of the rest platform is connected with the stair upstairs.

The distance between the rest platform and the ground is 2.38 meters.

The smoke-exhaust preventing fixed window is arranged below the joint of the rest platform and the second stair.

The rest platform and the steering platform are the same in structure and are L-shaped.

Compared with the prior art, the utility model discloses can be through the stair with the basement and independently separate with a building stair, prevent that flue gas and flame from stretching the upper portion floor of building.

Drawings

Fig. 1 is a plan view of a staircase at one floor level.

Fig. 2 is a plan view of a second floor of the staircase.

The system comprises a first-floor stair, a second-floor stair, a fire door, a turning platform, a rest platform, a second-floor stair, a first-floor stair, a second-floor stair and a smoke prevention and discharge fixing window, wherein the first-floor stair, the second-floor fire door, the turning platform.

Detailed Description

As shown in the accompanying drawings 1 to 2, a novel prevent smoke exhaust stairwell, including upstairs stair 1 and underground one deck downstairs 6, upstairs stair 1 settles directly over underground one deck downstairs 6, is equipped with on one side of upstairs stair 1 and prevents fire door 2, prevent that fire door 2 is equipped with at the back and turn to platform 3, turn to 3 one end intercommunications of platform and prevent smoke exhaust fixed window 7, turn to 3 other ends of platform intercommunication underground one deck downstairs 6, underground one deck downstairs 6 intercommunication basement, prevent that fire door 2 is the top and be equipped with upstairs 5, upstairs 5 intercommunication two floors.

The steering platform 3 is on the ground of the first floor.

The stair 1 that goes up connects rest platform 4 in the top, rest platform 4 one end is connected stair 1 that goes up, and rest platform 4 one end is connected stair 5 that goes up two.

The distance between the rest platform 4 and the ground is 2.38 meters.

The smoke-preventing and discharging fixed window 7 is arranged below the joint of the rest platform 3 and the second-floor stair 4, and the smoke-preventing and discharging fixed window 7 with the area not smaller than 1 square is arranged at the highest position of the underground stair.

The rest platform 4 is the same as the steering platform 3 in structure, and the rest platform 4 and the steering platform 3 are both L-shaped.

The working process of the utility model is as follows: the underground one-storey downstairs 6 are arranged under the upstairs stairs 1, residents pass through the steering platform 3 through the fireproof doors 2, enter a basement through the underground one-storey downstairs 6 to the rear of the upstairs stairs 1, the top of the smoke-exhaust preventing fixed window 7 is parallel and level with the lower portion of the rest platform 4, the distance between the top of the smoke-exhaust preventing fixed window and the lower portion of the rest platform is 2.38 meters, the smoke-exhaust preventing fixed window 7 and the fireproof doors 2 are arranged to meet the national building standard, and smoke exhaust prevention is achieved.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. The utility model provides a novel prevent between stair of discharging fume, includes stair on the one floor and underground stair down, its characterized in that: the first upstairs stairs are arranged right above the underground first downstairs, a fireproof door is arranged on one side of the first upstairs stairs, a steering platform is arranged behind the fireproof door, one end of the steering platform is communicated with a smoke-exhaust preventing fixed window, the other end of the steering platform is communicated with the underground first downstairs, the underground first downstairs is communicated with a basement, the first upstairs stairs are arranged at the top of the fireproof door, and the second upstairs stairs are communicated with the second upstairs; the uppermost part of the first upstairs stairs is connected with a rest platform, one end of the rest platform is connected with the first upstairs stairs, and one end of the rest platform is connected with the second upstairs stairs; the smoke prevention and exhaust fixed window is arranged below the joint of the rest platform and the second stair; the rest platform and the steering platform are the same in structure and are L-shaped.

2. The novel smoke prevention and evacuation stairwell according to claim 1, wherein: the steering platform is on the ground of the first floor.

3. The novel smoke prevention and evacuation stairwell according to claim 1, wherein: the distance between the rest platform and the ground is 2.38 meters.