Smoke-proof performance test equipment for fireproof door

Abstract

The utility model provides fireproof door smoke-proof performance test equipment, which comprises a test furnace, a separation middle frame, a gas supply device, a circulating fan, a heating pipe, a mounting rack, a thermocouple, a differential pressure measuring instrument and a control device, the separation middle frame is fixed in the test furnace and is used for fixing a fireproof door, the circulating fan is fixed in the test furnace and corresponds to the upper part of a gas transmission port, and the heating pipe is used for heating the fireproof door. A circulating fan is arranged in the testing furnace, an air outlet of the circulating fan faces upwards, the heating pipes are fixed in the testing furnace and correspond to the upper portion of the circulating fan, the heating pipes are distributed in a wavy mode in the horizontal direction, and the heating pipes are arranged in multiple layers in the vertical direction. Therefore, the efficiency and the uniformity of gas temperature rise are improved, and the accuracy and the reliability of a test result are improved.

Description

Technical Field

[0001] This utility model relates to the field of fire door testing technology, and in particular to a fire door smoke prevention performance testing device. Background Technology

[0002] Fire doors are doors that can meet the requirements of fire resistance stability, integrity, and heat insulation within a certain period of time. They are fire-resistant partitions with a certain degree of fire resistance, installed in fire compartments, evacuation stairwells, vertical shafts, and other similar locations. In addition to the functions of ordinary doors, fire doors also have the function of preventing the spread of fire and smoke. They can prevent the spread of fire and smoke for a certain period of time to ensure the evacuation of personnel. Therefore, the smoke resistance performance test of fire doors is particularly important.

[0003] Existing fire door smoke resistance testing equipment divides the test furnace into a rear simulation zone and a front detection zone by fixing the fire door to be tested onto a central frame inside the furnace. Gas is introduced and heated in the simulation zone to simulate smoke conditions during a fire. Differential pressure sensors and thermocouples are installed in the detection zone to detect changes in temperature and pressure, thereby determining the fire door's smoke resistance performance. However, in existing technology, the gas circulation efficiency within the simulation zone is too low, resulting in significant differences in temperature and pressure at different locations on the fire door, leading to substantial errors in the test results. Therefore, it is necessary to develop a fire door smoke resistance testing device to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a fire door smoke prevention performance testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fire door smoke-proof performance testing device includes a test furnace, a partition frame, a gas supply device, a circulating fan, heating pipes, a mounting bracket, thermocouples, a differential pressure measuring instrument, and a control device. The partition frame is fixed inside the test furnace for fixing the fire door. The test furnace has a simulation chamber corresponding to the rear side of the partition frame and a test chamber corresponding to the front side of the partition frame. The gas supply port of the gas supply device is connected to the bottom of the simulation chamber. The circulating fan is fixed inside the test furnace and above the gas supply port, with the air outlet of the circulating fan facing upwards. Multiple sets of circulating fans are evenly arranged in the horizontal direction. The heating pipes are fixed inside the test furnace and above the circulating fans. The heating pipes are distributed in a wavy pattern in the horizontal direction and multiple layers are arranged in the vertical direction. The mounting bracket is fixed inside the test chamber. Multiple sets of thermocouples are evenly fixed on the mounting bracket. The differential pressure measuring instrument is fixed inside the test chamber. The control device is electrically connected to the gas supply device, the circulating fan, the heating pipes, the thermocouples, and the differential pressure measuring instrument.

[0007] Further description of the present invention: The test furnace includes a furnace body, a movable frame, a locking assembly, a sealing ring, and a sealing plate. The furnace body has an opening on the front side, and the furnace body has a simulation chamber and a test chamber. The movable frame is fixed to the front edge of the furnace body by the locking assembly. The sealing ring is fixed to the furnace body and corresponds to the space between the furnace body and the movable frame. The sealing plate is fixed to the movable frame and corresponds to the opening of the furnace body.

[0008] Further description of the present invention: The locking assembly includes a hinge seat, a U-shaped buckle, a connecting screw, and a rotating handwheel. The hinge seat is fixed on the outside of the furnace body, the U-shaped buckle is fixed on the movable frame with its opening facing outward, the U-shaped buckle corresponds to the front side of the hinge seat, the rear end of the connecting screw is rotatably mounted on the hinge seat, the U-shaped buckle passes through the middle of the connecting screw, the rotating handwheel is threadedly connected to the front end of the connecting screw, and the rear end face of the rotating handwheel abuts against the front end face of the U-shaped buckle.

[0009] Further description of this utility model: Multiple sets of locking components are provided on both the left and right sides of the furnace body.

[0010] Further description of the present invention: The test furnace also includes a set of steps, with one set of steps fixedly installed on each of the left and right sides of the test furnace.

[0011] Further description of this utility model: The circulating fan includes a rotary motor, fan blades, an air guide shell, a slide rail, and a push-pull plate. The rotary motor is fixed on the test furnace, the fan blades are fixed on the power output end of the rotary motor and correspond to the lower part of the heating tube, the air guide shell is fixed on the test furnace and covers the outer periphery of the fan blades, the front end of the air guide shell is provided with an air inlet, the slide rail is fixed on the upper end of the air guide shell, the upper end of the air guide shell is provided with an air outlet, the air outlet corresponds to the rear side of the slide rail, and the push-pull plate is slidably connected to the slide rail and corresponds to the upper part of the air outlet.

[0012] The beneficial effects of this utility model are as follows: The front end of the test furnace can be opened. In the open state, the fireproof door to be tested is fixed to the partition frame with screws. The partition frame and the fireproof door divide the test furnace into a test chamber and a simulation chamber set in front and behind. After the front end of the test furnace is closed, test gas is introduced into the lower side of the simulation chamber through the gas supply device. The circulating fan transports the gas upward and heats it through the heating tube. The airflow at the top of the simulation chamber flows in a ring and returns to the circulating fan, thereby making the gas in the simulation chamber circulate efficiently, improving the efficiency and uniformity of gas heating. In the test chamber, thermocouples detect the temperature during the test process, and differential pressure measuring instruments detect the gas pressure. By measuring the temperature and gas pressure differences before and after the test, the smoke-proof performance of the fireproof door can be judged. The control device is used to control the operation of the gas supply device, circulating fan, heating tube, thermocouple, and differential pressure measuring instrument. The advantage of this design is that the gas circulates efficiently in the test furnace and continuously passes through the heating tube, thereby improving the efficiency and uniformity of gas heating and improving the accuracy and reliability of the test results. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention (front view, where the sealing plate is not shown);

[0014] Figure 2 This is an overall structural diagram of the present invention (rear view);

[0015] Figure 3 yes Figure 2 A magnified view of a portion of position A in the middle;

[0016] Figure 4 This is a structural diagram of the circulating fan in this utility model;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Test furnace; 11. Furnace body; 12. Moving frame; 13. Locking assembly; 131. Hinge seat; 132. U-shaped buckle; 133. Connecting screw; 134. Rotating handwheel; 14. Step ladder; 2. Dividing frame; 3. Gas supply device; 4. Circulating fan; 41. Rotary motor; 42. Fan blade; 43. Air guide shell; 431. Air inlet; 432. Air outlet; 44. Slide rail; 45. Push-pull plate; 5. Heating tube; 6. Mounting bracket; 7. Thermocouple; 8. Differential pressure measuring instrument; 9. Control device. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 4 As shown, a fire door smoke-proof performance testing device includes a test furnace 1, a partition frame 2, a gas supply device 3, a circulating fan 4, a heating pipe 5, a mounting bracket 6, a thermocouple 7, a differential pressure measuring instrument 8, and a control device 9. The partition frame 2 is fixed inside the test furnace 1 to fix the fire door. The test furnace 1 has a simulation chamber corresponding to the rear side of the partition frame 2 and a test chamber corresponding to the front side of the partition frame 2. The gas supply port of the gas supply device 3 is connected to the bottom of the simulation chamber. The circulating fan 4 is fixed inside the test furnace 1 and corresponds to the gas supply port. Above the opening, the air outlet of the circulating fan 4 faces upward. Multiple sets of the circulating fan 4 are evenly arranged in the horizontal direction. The heating tube 5 is fixed inside the test furnace 1 and corresponds to the top of the circulating fan 4. The heating tube 5 is distributed in a wave shape in the horizontal direction. Multiple layers of the heating tube 5 are arranged in the vertical direction. The mounting bracket 6 is fixed inside the test chamber. Multiple sets of thermocouples 7 are evenly fixed on the mounting bracket 6. The differential pressure measuring instrument 8 is fixed inside the test chamber. The control device 9 is electrically connected to the gas supply device 3, the circulating fan 4, the heating tube 5, the thermocouples 7, and the differential pressure measuring instrument 8.

[0021] The front end of the test furnace 1 can be opened. When open, the fire door to be tested is fixed to the partition frame 2 with screws. The partition frame 2 and the fire door divide the test furnace 1 into a test chamber and a simulation chamber set in front and behind. After the front end of the test furnace 1 is closed, the test gas is introduced into the lower side of the simulation chamber through the gas supply device 3. The circulating fan 4 delivers the gas upward and heats it through the heating tube 5. The airflow at the top of the simulation chamber flows in a ring and returns to the circulating fan 4, thereby making the gas in the simulation chamber circulate efficiently, improving the efficiency and uniformity of gas heating. The multi-layered wavy heating tube 5 can further improve the efficiency of heating the gas. In the test chamber, the thermocouple 7 detects the temperature during the test process, and the differential pressure measuring instrument 8 detects the air pressure. By measuring the temperature and air pressure difference before and after the test, the smoke prevention performance of the fire door can be judged. The control device 9 is used to control the operation of the gas supply device 3, the circulating fan 4, the heating tube 5, the thermocouple 7, and the differential pressure measuring instrument 8. The advantage of this design is that the gas circulates efficiently within the test furnace 1 and continuously passes through the heating tube 5, thereby improving the efficiency and uniformity of gas heating and enhancing the accuracy and reliability of the test results.

[0022] The test furnace 1 includes a furnace body 11, a movable frame 12, a locking assembly 13, a sealing ring, and a sealing plate. The furnace body 11 has an opening on its front side, and a simulation chamber and a test chamber are provided inside the furnace body 11. The movable frame 12 is fixed to the front edge of the furnace body 11 by the locking assembly 13. The sealing ring is fixed on the furnace body 11 and corresponds to the space between the furnace body 11 and the movable frame 12. The sealing plate is fixed on the movable frame 12 and corresponds to the opening of the furnace body 11.

[0023] During the test, the locking assembly 13 locks the movable frame 12 onto the furnace body 11 and ensures that there is no gap between the furnace body 11 and the movable frame 12 through the sealing ring. The sealing plate seals the inside of the movable frame 12, so that the test chamber is not connected to the outside. When it is necessary to disassemble or install the fire door, the movable frame 12 can be moved away by unlocking the locking assembly 13 to facilitate the disassembly and installation of the fire door.

[0024] The locking assembly 13 includes a hinge seat 131, a U-shaped buckle 132, a connecting screw 133, and a rotating handwheel 134. The hinge seat 131 is fixed to the outside of the furnace body 11. The U-shaped buckle 132 is fixed to the movable frame 12 with its opening facing outward. The U-shaped buckle 132 corresponds to the front side of the hinge seat 131. The rear end of the connecting screw 133 is rotatably mounted on the hinge seat 131. The middle part of the connecting screw 133 passes through the U-shaped buckle 132. The rotating handwheel 134 is threadedly connected to the front end of the connecting screw 133. The rear end face of the rotating handwheel 134 abuts against the front end face of the U-shaped buckle 132.

[0025] In the locked state, rotating the handwheel 134 presses the U-shaped buckle 132 backward, thereby firmly pressing the movable frame 12 against the front end of the furnace body 11. When it is necessary to unlock the movable frame 12, rotate the handwheel 134, and after the handwheel 134 moves forward a certain distance, flip the connecting screw 133 outward, so that the movable frame 12 can move forward and detach from the furnace body 11.

[0026] Multiple sets of locking components 13 are provided on both the left and right sides of the furnace body 11, thereby ensuring that the movable frame 12 and the furnace body 11 fit together fully and improve airtightness.

[0027] The test furnace 1 also includes a step ladder 14, with a set of step ladders 14 fixedly installed on each of the left and right sides of the test furnace 1. The step ladders 14 facilitate the operation of the locking components 13 at higher positions by the operator.

[0028] The circulating fan 4 includes a rotary motor 41, a fan blade 42, an air guide shell 43, a slide rail 44, and a push-pull plate 45. The rotary motor 41 is fixed on the test furnace 1. The fan blade 42 is fixed at the power output end of the rotary motor 41 and corresponds to the lower part of the heating tube 5. The air guide shell 43 is fixed on the test furnace 1 and covers the outer periphery of the fan blade 42. The front end of the air guide shell 43 is provided with an air inlet 431. The slide rail 44 is fixed at the upper end of the air guide shell 43. The upper end of the air guide shell 43 is provided with an air outlet 432, which corresponds to the rear side of the slide rail 44. The push-pull plate 45 is slidably connected to the slide rail 44 and corresponds to the upper part of the air outlet 432.

[0029] The rotary motor 41 drives the fan blades 42 to rotate, so that the airflow enters through the air inlet 431 of the air guide housing 43 and is discharged upward from the air outlet 432. The push-pull plate 45 can move along the slide rail 44, thereby controlling the opening and closing of the air outlet 432 and flexibly changing the airflow route for different specifications of fire doors.

[0030] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A fire door smoke-proof performance testing device, characterized in that: The device includes a test furnace, a partition frame, a gas supply device, a circulating fan, heating tubes, a mounting bracket, thermocouples, a differential pressure measuring instrument, and a control device. The partition frame is fixed inside the test furnace and is used to secure a fire door. The test furnace has a simulation cavity corresponding to the rear side of the partition frame and a test cavity corresponding to the front side of the partition frame. The gas supply port of the gas supply device is connected to the bottom of the simulation cavity. The circulating fan is fixed inside the test furnace and above the gas supply port, with the air outlet facing upwards. Multiple sets of the circulating fan are evenly arranged horizontally. The heating tubes are fixed inside the test furnace and above the circulating fan, with a wavy distribution horizontally and multiple layers arranged vertically. The mounting bracket is fixed inside the test cavity. Multiple sets of thermocouples are evenly fixed on the mounting bracket. The differential pressure measuring instrument is fixed inside the test cavity. The control device is electrically connected to the gas supply device, the circulating fan, the heating tubes, the thermocouples, and the differential pressure measuring instrument.

2. The fire door smoke resistance performance testing equipment according to claim 1, characterized in that: The test furnace includes a furnace body, a movable frame, a locking assembly, a sealing ring, and a sealing plate. The furnace body has an opening on its front side. The furnace body contains the simulation chamber and the test chamber. The movable frame is fixed to the front edge of the furnace body by the locking assembly. The sealing ring is fixed to the furnace body and corresponds to the space between the furnace body and the movable frame. The sealing plate is fixed to the movable frame and corresponds to the opening of the furnace body.

3. The fire door smoke resistance performance testing equipment according to claim 2, characterized in that: The locking assembly includes a hinge seat, a U-shaped buckle, a connecting screw, and a rotating handwheel. The hinge seat is fixed to the outside of the furnace body, the U-shaped buckle is fixed to the movable frame with its opening facing outward, and the U-shaped buckle corresponds to the front side of the hinge seat. The rear end of the connecting screw is rotatably mounted on the hinge seat, and the middle part of the connecting screw passes through the U-shaped buckle. The rotating handwheel is threadedly connected to the front end of the connecting screw, and the rear end face of the rotating handwheel abuts against the front end face of the U-shaped buckle.

4. The fire door smoke resistance performance testing equipment according to claim 3, characterized in that: Multiple sets of locking components are provided on both the left and right sides of the furnace body.

5. The fire door smoke resistance performance testing equipment according to claim 4, characterized in that: The test furnace also includes a set of steps, with one set of steps fixedly installed on each of the left and right sides of the test furnace.

6. The fire door smoke resistance performance testing equipment according to claim 1, characterized in that: The circulating fan includes a rotary motor, fan blades, an air guide shell, a slide rail, and a push-pull plate. The rotary motor is fixed on the test furnace. The fan blades are fixed to the power output end of the rotary motor and correspond to the lower part of the heating tube. The air guide shell is fixed on the test furnace and covers the outer periphery of the fan blades. The front end of the air guide shell is provided with an air inlet. The slide rail is fixed to the upper end of the air guide shell. The upper end of the air guide shell is provided with an air outlet, which corresponds to the rear side of the slide rail. The push-pull plate is slidably connected to the slide rail and corresponds to the upper part of the air outlet.

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