CN215653572U - Excess pressure monitoring device of fire extinguishing system - Google Patents

Abstract

The utility model discloses a residual pressure monitoring device of a fire extinguishing system, which comprises a residual pressure controller arranged on a wall body above a fire door, pressure detectors arranged on two sides of the fire door respectively, an auxiliary smoke blocking mechanism and a manual control mechanism, wherein the two pressure detectors are electrically connected with the residual pressure controller respectively; when personnel triggered manual control mechanism, the excessive pressure controller controlled outside pressure relief mechanism to carry out the threshold value pressure relief to the smoke protection district to supplementary cigarette mechanism that keeps off is bloied to the one side of fire door department back to smoke protection district direction and is kept off the cigarette in the control. When the utility model is applied, the utility model can be manually controlled to carry out threshold value-crossing pressure relief on the smoke-proof area so that trapped people can open the fire door more easily, and simultaneously can control the blowing and smoke-blocking operation to effectively block smoke from entering the smoke-proof area.

Description

Excess pressure monitoring device of fire extinguishing system

Technical Field

The utility model relates to the field of residual pressure monitoring, in particular to a residual pressure monitoring device of a fire extinguishing system.

Background

Building fire smoke is a main cause of casualties, and people are directly poisoned or suffocated to die due to harmful components of the smoke or oxygen deficiency; the light-shielding effect of the smoke makes people difficult to escape and trapped in fire areas; the high temperature hazard of the flue gas can cause the strength of the metal material to be reduced, and further cause the structure to collapse and casualties. The smoke not only causes casualties, but also brings difficulty to firefighters to put out a fire. Therefore, when a fire occurs, smoke should be timely controlled, and a smokeless (or extremely low smoke content) horizontal and vertical evacuation channel or safety area should be created in the building, so as to ensure that people in the building are safely evacuated or temporarily refueled, and fire fighters can arrive at the fire area in time to put out a fire. The pressurized smoke-proof method is an important method for controlling fire smoke, and a certain amount of outdoor air is sent into a front chamber, a closed refuge layer (room) or a staircase by a fan to keep a certain pressure so as to prevent smoke from invading.

According to the requirements of technical standards of smoke prevention and exhaust systems of buildings: the mechanical pressurization air supply quantity is required to meet the requirement that the pressure difference between the front chamber, the closed refuge layer (room) and the walkway is 25-30 Pa; the pressure difference between the staircase and the walkway is 40-50 Pa; when the residual pressure value of the system exceeds the maximum allowable pressure value, pressure relief measures are taken so as to achieve the purpose of effectively preventing smoke and facilitating personnel to open the fire door. However, in an actual fire scene, trapped people may be physically weak due to physical strength reduction caused by smoke suction, high heat and the like, and the fire door is still difficult to open under the condition that the residual pressure of the staircase meets a threshold value.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art and provides a residual pressure monitor of a fire extinguishing system, which can be manually controlled by people to perform threshold pressure relief on a smoke-proof area during application so that trapped people can open a fire door more easily, and can be controlled to perform blowing smoke blocking operation to effectively block smoke from entering the smoke-proof area.

The purpose of the utility model is mainly realized by the following technical scheme:

a residual pressure monitoring device of a fire extinguishing system comprises a residual pressure controller arranged on a wall body above a fire door, pressure detectors arranged on two sides of the fire door respectively, an auxiliary smoke blocking mechanism and a manual control mechanism, wherein the two pressure detectors are electrically connected with the residual pressure controller respectively; when personnel triggered manual control mechanism, the excessive pressure controller controlled outside pressure relief mechanism to carry out the threshold value pressure relief to the smoke protection district to supplementary cigarette mechanism that keeps off is bloied to the one side of fire door department back to smoke protection district direction and is kept off the cigarette in the control.

Preferably, the fire door opening and closing device further comprises a door opening and closing induction mechanism, wherein the door opening and closing induction mechanism is arranged on the fire door and is electrically connected with the residual pressure controller; when the door opening and closing induction mechanism detects that the fire door is opened, the residual pressure controller controls the auxiliary smoke blocking mechanism to blow and block smoke, and when the door opening and closing induction mechanism detects that the fire door is closed, the residual pressure controller controls the auxiliary smoke blocking mechanism to stop blowing and blocking smoke.

Preferably, supplementary cigarette mechanism that keeps off includes fan and a plurality of nozzle, and the fan is connected with the excess pressure controller electricity, and fire door top wall body is located to the fan, and the fan air intake is located smoke prevention district, and fan air outlet and nozzle intercommunication, the nozzle are located the wall body of fire door dorsad staircase one side top downwards.

In conclusion, the utility model has the following beneficial effects: through the arrangement of the manual control mechanism and the auxiliary smoke blocking mechanism which are electrically connected with the residual pressure controller, when a person triggers the manual control mechanism, the external pressure relief mechanism can be controlled to perform threshold pressure relief on a smoke-proof area, so that weak trapped persons in a fire can easily open the fire door; in addition, when threshold value pressure release, fire door were opened in the smoke protection district, can blow through supplementary cigarette mechanism again and keep off the cigarette, the pressurization smoke protection effect in smoke protection district has been guaranteed when being convenient for stranded personnel open the fire door more easily.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a longitudinal sectional view of a mounting structure according to an embodiment of the present invention.

In the figure: 1-residual pressure controller, 2-pressure detector, 3-auxiliary smoke blocking mechanism, 31-blower, 32-nozzle, 4-manual control mechanism, 5-door opening and closing induction mechanism, 6-fire door, and 7-wall body.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "coupled" are intended to be inclusive and mean, for example, that is, fixedly coupled, removably coupled, or integrally coupled; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

the utility model provides a residual pressure monitoring device of fire extinguishing system, its basic mechanism is similar with prior art, including locating the residual pressure controller 1 of 6 top wall bodies 7 of fire door and locating the pressure detector 2 on 6 two sides of fire door respectively, two pressure detectors 2 are connected with residual pressure controller 1 electricity respectively. The two pressure detectors 2 respectively detect air pressures on two sides of the fire door 6 and send the air pressures to the residual pressure controller 1 to calculate actual pressure difference, and the residual pressure controller 1 compares the actual pressure difference with threshold pressure difference to perform air supply pressurization or air exhaust pressure relief operation so as to keep the actual pressure difference on two sides of the fire door 6 within the range of the threshold pressure difference and facilitate personnel to open the fire door 6 while preventing smoke.

In an actual fire scene, trapped people may be physically weak due to physical strength reduction caused by smoke suction, high heat and the like, and the fire door is still difficult to open under the condition that the actual pressure difference meets the threshold pressure difference. In order to enable weak trapped people in fire to easily open the fire door 6, as shown in fig. 1, the fire door further comprises an auxiliary smoke blocking mechanism 3 and a manual control mechanism 4, wherein the manual control mechanism 4 and the auxiliary smoke blocking mechanism 3 are respectively electrically connected with the residual pressure controller 1, and the auxiliary smoke blocking mechanism 3 and the manual control mechanism 4 are both arranged on one side of the fire door 6, which faces away from a smoke prevention area.

When the trapped person triggers the manual control mechanism 4, the residual pressure controller 1 controls an external pressure relief mechanism to perform threshold pressure relief on the smoke-proof area so as to reduce the positive pressure of the smoke-proof area, so that weak persons who are not trapped can easily open the fire door 6; simultaneously, the residual pressure controller 1 controls the auxiliary smoke blocking mechanism 3 to blow and block smoke on one side of the fire door 6 back to the smoke prevention area so as to effectively block smoke from entering the smoke prevention area.

Optionally, the manual control mechanism 4 is a button provided at the lower middle portion of the fire door 6 so as to be pressed by trapped persons. Supplementary cigarette mechanism 3 that keeps off includes fan 31 and a plurality of nozzle 32, and fan 31 is connected with excessive pressure controller 1 electricity, and 6 top wall bodies 7 of fire door are located to fan 31, and fan 31 air intake is located smoke prevention district, and fan 31 air outlet communicates with nozzle 32, and nozzle 32 locates fire door 6 wall bodies 7 of smoke prevention district one side top dorsad downwards. When stranded personnel trigger manual control mechanism 4, residual pressure controller 1 control fan 31 starts, and the air in suction smoke prevention district is spouted down from fire door 6 wall body 7 of smoke prevention district one side top dorsad through nozzle 32, forms the air curtain to cross threshold value pressure release, stranded personnel and open the supplementary smoke prevention under the condition of fire door in smoke prevention district, effectively block the flue gas and get into smoke prevention district.

Further, in order to enable the auxiliary smoke blocking mechanism 3 to automatically stop blowing and blocking smoke when the fire door 6 is closed, the utility model also comprises a door opening and closing induction mechanism 5, wherein the door opening and closing induction mechanism 5 is arranged on the fire door 6, and the door opening and closing induction mechanism 5 is electrically connected with the residual pressure controller 1. When the door opening and closing sensing mechanism 5 detects that the fire door 6 is closed, the residual pressure controller 1 controls the auxiliary smoke blocking mechanism 3 to stop blowing and blocking smoke. Of course, also can further set up switch door induction mechanism 5 and detect when fire door 6 opens, the supplementary cigarette mechanism 3 that keeps off of residual pressure controller 1 control keeps off the cigarette of blowing to also blow when not triggering manual control mechanism 4, normally opening fire door 6 and keep off the cigarette, strengthen the smoke protection effect. The door opening and closing sensing mechanism 5 is a hall sensor and a magnet which are arranged on the fire door 6 correspondingly and are not described in detail.

According to the utility model, by arranging the manual control mechanism 4 and the auxiliary smoke blocking mechanism 3 which are electrically connected with the residual pressure controller 1, an external pressure relief mechanism can be controlled to perform threshold value pressure relief on a smoke prevention area when a person triggers the manual control mechanism 4, so that weak trapped persons in a fire disaster can easily open a fire door; in addition, when threshold value pressure release, fire door were opened in the smoke protection district, can blow through supplementary cigarette mechanism 3 again and keep off the cigarette, the pressurization smoke protection effect in smoke protection district has been guaranteed when the fire door is opened more easily to the stranded personnel of being convenient for.

Parts not described in the above modes can be realized by adopting or referring to the prior art.

The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the utility model pertains, other embodiments that do not depart from the gist of the utility model are intended to be within the scope of the utility model.

Claims (3)

1. The utility model provides a fire extinguishing systems's excess pressure monitoring device, is including locating excess pressure controller (1) of fire door (6) top and locating pressure detector (2) on fire door (6) two sides respectively, and its characterized in that is connected with excess pressure controller (1) electricity respectively in two pressure detector (2): the auxiliary smoke blocking mechanism (3) and the manual control mechanism (4) are further included, the manual control mechanism (4) and the auxiliary smoke blocking mechanism (3) are respectively and electrically connected with the residual pressure controller (1), and the auxiliary smoke blocking mechanism (3) and the manual control mechanism (4) are both arranged on one side, back to the smoke prevention area, of the fire door (6); when personnel trigger manual control mechanism (4), residual pressure controller (1) control outside pressure release mechanism and go on threshold value pressure release to the smoke protection district to supplementary cigarette mechanism (3) of keeping off is bloied to the one side of smoke protection district back to of fire door (6) department and is kept off the cigarette.

2. A residual pressure monitoring device of a fire extinguishing system according to claim 1, characterized in that: the fire door opening and closing sensing mechanism (5) is arranged on the fire door, and the door opening and closing sensing mechanism (5) is electrically connected with the residual pressure controller (1); when door opening and closing induction mechanism (5) detected that fire door (6) opened, residual pressure controller (1) control was assisted and is kept off cigarette mechanism (3) and bloies and keep off the cigarette, and when door opening and closing induction mechanism (5) detected that fire door (6) closed, residual pressure controller (1) control was assisted and is kept off cigarette mechanism (3) and stop blowing and keep off the cigarette.

3. A residual pressure monitoring apparatus of a fire extinguishing system according to claim 1 or 2, characterized in that: supplementary cigarette mechanism (3) of keeping off includes fan (31) and a plurality of nozzle (32), and fan (31) are connected with excess pressure controller (1) electricity, and fire door (6) top wall body (7) are located in fan (31), and fan (31) air intake is located smoke prevention district, and fan (31) air outlet and nozzle (32) intercommunication, and wall body (7) above smoke prevention district one side are located to fire door (6) dorsad downwards in nozzle (32).

Images