KR100709754B1 - A smoke test device - Google Patents

Abstract

The present invention relates to a smoke testing apparatus, comprising: a combustion chamber having an upper vent and a lower vent; an upper damper for opening and closing an upper vent; Lower cylinder mechanism to dissipate, a heat radiating furnace for radiating heat to the specimen to be burned, a specimen holder provided at a lower distance under the heat radiating furnace, a blocking film provided to be accessible between the heat radiating furnace and the specimen holder, and a blocking film for driving the blocking film. A drive unit, a burner for igniting the specimen contained in the specimen holder, a fuel supply unit for supplying fuel to the burner, an air supply unit for supplying air to the burner, a calorimeter for measuring the amount of heat applied to the specimen from the radiant furnace, and a heat flow meter Cooling mechanism for cooling the, and an optical system for measuring the smoke density in the combustion chamber. According to the present invention, the air inlet and the smoke outlet of the combustion chamber can be easily opened and closed, the radiant heat applied to the specimen can be easily controlled, and the apparatus can be easily installed without linking the water supply facilities.

Combustion, smoke, smoke density, radiant heat, furnace, damper, cylinder, solenoid

Description

A smoke test device

1 is a configuration diagram showing an example of a smoke testing apparatus according to the prior art,

2 is a block diagram showing a smoke test apparatus according to an embodiment of the present invention,

Figure 3 is a side view showing a smoke test apparatus according to an embodiment of the present invention,

4 is an enlarged view showing the heat radiation furnace shown in FIG. 3;

5 is an exploded perspective view showing the heat radiation furnace shown in FIG. 4;

6 is an assembled perspective view showing the heat radiation furnace shown in FIG.

7 is a schematic plan view showing an operating state of the barrier shown in FIG. 4;

8 is a screen illustrating an example of the interface illustrated in FIG. 3.

Explanation of symbols on the main parts of the drawings

10: combustion chamber 11: upper vent

12: upper damper 13: upper cylinder mechanism

15: lower vent 16: lower damper

17: lower cylinder mechanism 20: side cabinet

30: base cabinet 40: heat dissipation furnace

41: heater 42,43: heat dissipation cone

44 upper upper support plate 45 lower lower support plate

46: support holder 51: specimen holder

52: seating plate 53: holder support

61: barrier 62: pivot axis

63: blocking film drive unit 70: burner

80: heat flow meter 85: circulation line

86: cooling water storage 87: circulation pump

90: interface LIGHT: light source

PMT: Photo Detector

The present invention relates to a smoke testing apparatus, and more particularly to a smoke testing apparatus for measuring the density of smoke according to the fire generated by the simulation of the fire.

In general, fire is a phenomenon in which various physical and chemical phenomena are intricately intertwined, and it is fundamentally impossible to simulate all aspects of fire at the laboratory level at once.

After ignition, the development into a fire can occur through several different routes, depending on the physical location of the combustible material, as well as other environmental conditions. However, the form of a typical fire development stage can be organized into three stages represented by a typical temperature-time curve.

The composition of the combustion cracking products at each stage is different, which affects the smoke density at each stage. Moreover, in fire scenarios, in particular, information is required on the flow of heat, the supply of oxygen, the release of combustion gases, and the like.

Evaluation of the actual fire performance of the product can be obtained with specimens of actual size and many factors affect the generation of smoke and the characteristics of the smoke produced. Therefore, it is possible to evaluate the effect on the development of a fire by understanding the characteristics of the smoke of a particular material.

The density of smoke, one of the characteristics of smoke, can be measured by measuring the percent light transmittance using an optical system.

The transmission of light is measured by exposing the test piece for a predetermined time with a cone heat radiation furnace. Through this, it is possible to calculate the specific optical density (mass loss rate), such as (Specific Optical Density).

As shown in FIG. 1, a conventional smoke test apparatus using a cone-shaped heat dissipation furnace includes a combustion chamber 110 having an upper vent and a lower vent, an upper damper and a lower damper for opening and closing the upper vent and the lower vent. , A radiating furnace 140 for radiating heat to the specimen to be burned, a specimen holder provided at a lower distance below the radiating furnace 140, and provided to be accessible between the radiating furnace 140 and the specimen holder. Blocking film, the burner 170 for igniting the specimen contained in the specimen holder, the fuel supply unit 175 for supplying fuel to the burner 170, the air supply unit 176 for supplying air to the burner 170, the It includes a heat flow meter 180 for measuring the amount of heat applied to the specimen from the heat radiation furnace 140, and an optical system for measuring the smoke density in the combustion chamber.

Conventionally, the damper was manually opened and closed to allow air to enter and exit the air through the upper and lower vents of the combustion chamber 110. Therefore, there is a problem that the accuracy of the test is lowered and the risk is accompanied.

The blocking film is to remove the radiation heat from the heat radiating furnace 140 to the specimen to remove the specimen to the radiation heat, the barrier film is manually removed, there is a problem that the accuracy of the test is lowered and there is a risk.

The heat flow meter 180 measures the radiant heat, which causes the temperature to continuously increase. In the related art, a method of cooling by injecting coolant from an external water supply facility and circulating the heat flow meter 180 is used. In this case, there were inconveniences in installing the water supply facilities.

Therefore, the present invention was created to improve the problems of the conventional smoke test apparatus as described above, and can easily open and close the air inlet and the smoke outlet of the combustion chamber and can easily control the radiant heat applied to the specimen. The purpose is to provide an apparatus for testing smoke.

In addition, the present invention has another object to provide a smoke test apparatus that can easily cool the heat flow meter for measuring the radiant heat applied to the specimen and thereby can easily install the device without linking the water facility.

In order to achieve the above object, the smoke test apparatus according to the present invention comprises: a combustion chamber having an upper vent and a lower vent; An upper damper for opening and closing the upper vent; A lower damper for opening and closing the lower vent; An upper cylinder mechanism for operating the upper damper; A lower cylinder mechanism for operating the lower damper; A heat dissipation furnace provided inside the combustion chamber and having a spiral-shaped cone-shaped heater inside the heat dissipation cone, and radiating heat to a specimen to be burned; A specimen holder provided at a lower portion of the heat dissipation furnace at a predetermined interval and accommodating the specimen; A blocking film provided to be accessible between the heat dissipation furnace and the specimen holder; A blocking film driver for driving the blocking film; A burner for igniting a specimen received in the specimen holder; A fuel supply unit supplying fuel to the burner; An air supply unit supplying air to the burner; A calorimeter for measuring the amount of heat applied to the specimen from the heat radiating furnace; A cooling mechanism for cooling the heat flow meter; It includes an optical system for measuring the smoke density in the combustion chamber.

The cooling mechanism includes a circulation line for circulating cooling water to exchange heat with the heat flow meter; A coolant storage unit for storing the coolant; It is preferable to include a circulation pump for forcibly circulating the cooling water of the cooling water storage unit through the circulation line.

The upper cylinder mechanism and the lower cylinder mechanism is preferably supplied with air pressure from the air supply.

The barrier film is pivoted by a pivot shaft to enter and exit between the heat dissipation furnace and the specimen holder, and the barrier membrane driver is a solenoid valve for axially rotating the pivot shaft.

The barrier membrane driving unit may be supplied with air pressure from the air supply unit.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the smoke test apparatus according to the present invention.

2 and 3, the smoke test apparatus according to an embodiment of the present invention, the combustion chamber 10 having the upper vent 11 and the lower vent 15, opening and closing the upper vent 11 The upper damper 12, the lower damper 16 for opening and closing the lower vent 15, the upper cylinder mechanism 13 for operating the upper damper 12, the lower cylinder mechanism for operating the lower damper 16 (17), a heat radiation furnace (40) for applying radiant heat to the specimen to be burned, a specimen holder (51) provided with a predetermined interval below the heat radiation furnace (40), the heat radiation furnace (40) and the specimen holder ( 51, a barrier film 61 provided to be allowed to go in and out, a barrier membrane driver 63 for driving the barrier membrane 61, a burner 70 for igniting a specimen accommodated in the specimen holder 51, and a fuel as the burner. Fuel supply unit 75 for supplying air, air supply unit 76 for supplying air to burner 70, and Heat flow meter (calorimeter) 80 for measuring the amount of heat to be applied to and, a cooling mechanism, an optical system for measuring the smoke density in the combustion chamber to cool the heat flow meter (80).

The combustion chamber 10 is formed in a rectangular cylinder shape, has an upper vent 11 and a lower vent 15, the heat radiation furnace 40, the specimen holder 51, the blocking film 61, the burner ( 70), a heat flow meter 80, and an optical system.

The optical system includes a light source LIGHT and a photo sensor PMT that senses light of the light source. The light source LIGHT is provided at the bottom of the combustion chamber 10, and the photo sensor PMT is provided at the ceiling of the combustion chamber 10. Therefore, the photo sensor PMT senses the light emitted from the light source LIGHT to measure the light transmittance, thereby measuring the density of the smoke.

The lower vent 15 is a passage through which the smoke in the combustion chamber 10 is forcedly discharged, and the upper vent 11 is a passage through which external air flows into the combustion chamber 10. Through the opening and closing operations of the lower vent 15 and the upper vent 11 can adjust the pressure in the combustion chamber 10, it is possible to discharge the smoke.

The lower vent 15 and the upper vent 11 are opened and closed by the lower damper 16 and the upper damper 12, respectively, and the lower damper 16 and the upper damper 12 are the upper cylinder mechanism 13 and It is operated by the lower cylinder mechanism 17, respectively.

That is, the upper cylinder mechanism 13 and the lower cylinder mechanism 17 are supplied with air pressure from the air supply unit 76 to linearly move the lower damper 16 and the upper damper 12 to lower the vent 15 and the upper portion. Each vent 11 is opened and closed.

The lower side of the combustion chamber 10 is provided with a square cylindrical base cabinet 30, and the side surface of the combustion chamber 10 and the base cabinet 30 is provided with a square cylindrical side cabinet 20. . The combustion chamber 10, the base cabinet 30, and the side cabinet 20 form a rectangular cylindrical shape as a whole.

The heat radiating furnace 40 is supported by the upper furnace supporting plate 44 and the lower furnace supporting plate 45 at a predetermined height with respect to the bottom surface of the combustion chamber 10, and radiates the heater 41 to the heat radiating cone 42. 43) is provided inside. Through holes are formed in the upper and lower support plates 44 and 45, respectively.

The heater 41 is formed in a spiral shape in a cone shape, and generates heat by receiving power from the outside through a thermocouple (not shown).

The heat dissipation cones 42 and 43 surround the outside of the heater 41 in double, and are formed by opening the upper and lower portions so as to communicate with the through-holes of the upper and lower support plates 44 and 45. The radiant heat of (41) is released to the outside.

The specimen holder 51 serves to receive the specimen, and is provided at a predetermined interval below the lower furnace support plate 45 of the combustion chamber 10 by a holder support 53 so that the specimen is a heat radiating furnace ( 40). An upper end of the holder support 53 is provided with a seating plate 52 for mounting the specimen holder 51.

The burner 70 receives propane gas from the fuel supply unit 75 and receives air from the air supply unit 76 to ignite the specimen. Propane gas supplied from the fuel supply unit 75 and air supplied from the air supply unit 76 are mixed through one line and supplied to the burner 70.

As shown in FIG. 7, the blocking film 61 is a plate formed in a fan shape, and as shown in FIG. 4, the barrier layer 61 intersects between the heat radiating furnace 40 and the specimen holder 51. It serves to block the transfer of radiant heat to the specimen.

The blocking film 61 is provided horizontally with the bottom surface of the heat radiating furnace 40, the pivot shaft 62 is vertically coupled to one side, the blocking film driver 63 is rotated to rotate the pivot shaft 62. .

The barrier membrane driver 63 rotates the pivot shaft 62 as a solenoid valve.

One side of the lower furnace support plate 45 is provided with a support holder 46 for supporting the heat flowmeter 80 so that the heat flowmeter 80 measures the amount of heat emitted from the heat radiating furnace 40.

The cooling mechanism includes a circulation line (85) for circulating the cooling water to exchange heat with the heat flow meter (80), a cooling water storage unit (86) for storing the cooling water, and a cooling water of the cooling water storage unit (86). It includes a circulation pump 87 for forced circulation.

The cooling water storage unit 86 lowers the temperature of the circulating water coming out of the heat flow meter 80 and returns it to the heat flow meter 80 by the circulation pump 87.

Since the cooling mechanism has a cooling water storage unit 86, the cooling mechanism is not connected to an external water supply facility, and thus can be easily installed.

The cooling mechanism is provided at one side of the base cabinet 30 or the side cabinet 20 to be easily moved together with the base cabinet 30 or the side cabinet 20.

The side cabinet 20 is provided with an interface 90 for control.

As shown in FIG. 8, the interface 90 is configured as a touch panel to control the equipment through a control unit. The control unit includes a computer for inputting and outputting electrical signals from the equipment.

The base cabinet 30 accommodates equipment including an optical system and a lower cylinder mechanism 17.

As mentioned above, although the preferred embodiment for illustrating the principle of this invention was shown and demonstrated, this invention is not limited to the structure and operation as it was shown and described. Without departing from the gist of the invention claimed in the claims, any person having ordinary skill in the art to which the present invention pertains can make various changes and modifications, as well as such changes and modifications It is in the range of a range description.

As described above, according to the smoke test apparatus according to the present invention, the air inlet and the smoke outlet of the combustion chamber can be easily opened and closed, the radiant heat applied to the specimen can be easily controlled, and the device is not connected to the water supply facility. There is an effect that can be installed easily.

Claims (4)

A combustion chamber having an upper vent and a lower vent; An upper damper for opening and closing the upper vent; A lower damper for opening and closing the lower vent; An upper cylinder mechanism for operating the upper damper; A lower cylinder mechanism for operating the lower damper; A heat dissipation furnace provided inside the combustion chamber, having a cone-shaped heater and a heat dissipation cone, and radiating heat to a specimen to be burned; A specimen holder provided at a predetermined interval in the heat dissipation furnace and accommodating the specimen; A blocking film provided to be accessible between the heat dissipation furnace and the specimen holder; A blocking film driver for driving the blocking film; A burner for igniting a specimen received in the specimen holder; A fuel supply unit supplying fuel to the burner; An air supply unit supplying air to the burner; A calorimeter for measuring the amount of heat applied to the specimen from the heat radiating furnace; A cooling mechanism for cooling the heat flow meter; And an optical system for measuring a smoke density by measuring a transmission amount of light in the combustion chamber. The method of claim 1, wherein the cooling mechanism, A circulation line circulating cooling water to be heat-exchanged with the heat flow meter; A coolant storage unit for storing the coolant; And a circulation pump for forced circulation of the cooling water of the cooling water storage unit through the circulation line. The method according to claim 1 or 2, The upper cylinder mechanism and the lower cylinder mechanism smoke tester, characterized in that the pneumatic supply from the air supply. The method of claim 3, wherein the blocking film, It is pivoted by the pivot axis to enter and exit between the heat dissipation furnace and the specimen holder, The blocking film driving unit, Smoke test device, characterized in that the solenoid valve for rotating the pivot shaft.

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