Fire damper air leakage detection equipment

Abstract

The present application relates to the field of fire dampers, and in particular to a fire damper air leakage detection device. It includes a support assembly, the support assembly includes a workbench for placing the fire damper, the workbench is provided with ventilation holes, a measuring mechanism is arranged next to the workbench, the measuring mechanism includes a flow measurement unit, the flow measurement unit includes a ventilation pipe connected to the workbench, one end of the ventilation pipe is used to communicate with the fan, and the other end is used to communicate with the inside of the closed fire damper frame through the ventilation hole, a flow meter is connected to the ventilation pipe, and the measuring mechanism also includes a pressure measurement unit, the pressure measurement unit includes a pressure pipe connected to the workbench, one end of the pressure pipe is used to communicate with the inside of the closed fire damper frame, and the other end is connected to a pressure gauge. The present application has the effect of realizing the air leakage detection of the fire damper.

Description

Technical Field

[0001] The present application relates to the field of fire dampers, and in particular to a fire damper air leakage detection device. Background Art

[0002] Marine fire dampers are a common marine firefighting equipment. They are a closing device for pipe ventilation. For two different fire zones, fire dampers must be installed in the critical ventilation ducts to cut off the spread of fire. The operation methods of fire dampers can vary: they can be purely mechanical, pneumatic, or electric, etc. Usually, fire dampers include a frame, rotatable damper blades, and an operating device for controlling the rotation of the damper blades.

[0003] With regard to the above-mentioned related technologies, the inventor believes that fire dampers play a vital role in ship fire protection. If the air leakage of the fire dampers exceeds the standard, it will cause major safety hazards. Therefore, the air leakage of the fire dampers needs to be tested before leaving the factory. Summary of the invention

[0004] In order to realize the air leakage detection of the fire damper, the present application provides a fire damper air leakage detection device.

[0005] The present application provides a fire damper leakage detection device, which adopts the following technical solution:

[0006] A fire damper air leakage detection device comprises a supporting assembly, wherein the supporting assembly comprises a workbench for placing the fire damper, the workbench is provided with ventilation holes, a measuring mechanism is arranged next to the workbench, the measuring mechanism comprises a flow measuring unit, the flow measuring unit comprises a ventilation pipe connected to the workbench, one end of the ventilation pipe is used to communicate with a fan, and the other end is used to communicate with the inside of a closed fire damper frame through the ventilation holes, a flow meter is connected to the ventilation pipe, and the measuring mechanism further comprises a pressure measuring unit, the pressure measuring unit comprises a pressure pipe connected to the workbench, one end of the pressure pipe is used to communicate with the inside of a closed fire damper frame, and the other end is connected to a pressure gauge.

[0007] By adopting the above technical solution, when the fire damper is tested for air leakage, the fan is driven to work, and gas is introduced to one side of the closed fire damper through the ventilation pipe. The gas pressure is monitored by the pressure gauge. When the gas pressure reaches a certain value, the flow meter value is read. When the fire damper is completely closed, gas of a certain pressure does not circulate in the ventilation pipe, and the flow meter value is zero. When the fire damper has a certain amount of leakage, the gas in the ventilation pipe circulates, and the leakage of the fire damper can be reflected by the reading of the flow meter, thereby realizing the detection of air leakage of the fire damper. By setting a pressure gauge, the air leakage of the fire damper under different pressure values ​​can be tested.

[0008] Optionally, a sealing clamping mechanism for clamping the fire damper is provided on the workbench, and the sealing clamping mechanism includes a clamping part, and the clamping part includes a pressing plate which is slidably connected to the workbench in the vertical direction, and the pressing plate abuts against the frame of the fire damper, and the pressing plate is provided with air holes.

[0009] By adopting the above technical solution, the pressure plate is driven to move and press against the frame of the fire damper, thereby reducing gas leakage from the abutment between the workbench and the fire damper frame and improving measurement accuracy.

[0010] Optionally, the sealing and clamping mechanism further includes a sealing portion connected to the workbench, and the sealing portion abuts against a frame of the fire damper.

[0011] By adopting the above technical solution and providing a sealing portion, gas leakage from the abutment between the workbench and the fire damper frame can be reduced, thereby improving measurement accuracy.

[0012] Optionally, the sealing portion includes a sealing ring fixedly connected to the workbench, and the sealing ring is fitted around the fire damper frame.

[0013] By adopting the above technical solution, the fire damper frame is placed against the workbench sealing ring, thereby reducing gas leakage from the abutment between the workbench and the fire damper frame and improving measurement accuracy.

[0014] Optionally, the sealing portion includes a plurality of sealing blocks slidably connected to the workbench in a vertical direction, and the plurality of sealing blocks are arranged around the ventilation hole, and adjacent sealing blocks are in contact with each other.

[0015] By adopting the above technical solution, when the fire damper is placed on the workbench, multiple sealing blocks are driven to move so that the sealing blocks abut against the frame of the fire damper, thereby reducing gas leakage from the abutment between the workbench and the fire damper frame and improving measurement accuracy. By providing multiple sealing blocks, the sealing part can seal fire dampers of different sizes.

[0016] Optionally, the support assembly further includes a support frame connected to the workbench, and the clamping portion further includes at least one clamping cylinder for driving the pressing plate to slide downward, and the clamping cylinder is connected to the support frame.

[0017] By adopting the above technical solution, the fire damper is compressed by driving the pressure plate to move through the compression cylinder, thereby reducing gas leakage from the joint between the workbench and the fire damper frame and improving measurement accuracy.

[0018] Optionally, at least one mounting assembly is provided on the support frame, and the clamping cylinder is detachably connected to the mounting assembly.

[0019] By adopting the above technical solution, the clamping cylinder is detachably connected to the mounting assembly. When the mounting assembly is set to several, the clamping cylinder can be connected to any mounting assembly to change the position of the clamping cylinder and change the clamping position of the clamping cylinder on the fire damper.

[0020] Optionally, the clamping cylinder is slidably connected to the support frame in a horizontal direction.

[0021] By adopting the above technical solution, the clamping cylinder is driven to slide on the support frame, so that the position of the clamping cylinder can be changed, the clamping position of the clamping cylinder on the fire damper can be changed, and the clamping cylinder can also be enabled to clamp fire dampers of different sizes.

[0022] Optionally, the flow measurement unit is provided with several.

[0023] By adopting the above technical solution and setting up a plurality of flow measurement parts, ventilation pipes of different diameters and flow meters of different ranges can be selected for the plurality of flow measurement parts to test different leakage amounts.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. By setting up a measuring mechanism, the air leakage detection of the fire damper can be realized;

[0026] 2. By setting up a sealing and pressing mechanism, the leakage of gas from the joint between the workbench and the fire damper frame is reduced, the measurement error is reduced, and the measurement accuracy is improved;

[0027] 3. By setting up several measuring parts, different leakage amounts of fire dampers can be tested;

[0028] 4. By arranging a plurality of sealing blocks on the sealing part, the sealing part can seal fire dampers of different sizes and shapes;

[0029] 5. The position of the clamping cylinder can be adjusted to change the clamping position of the clamping cylinder on the fire damper so that the clamping cylinder can clamp fire dampers of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the fire damper leakage detection device in Example 1.

[0031] Figure 2 It is a structural schematic diagram of the measuring mechanism in the fire damper leakage detection device in Example 1.

[0032] Figure 3 It is a schematic diagram of the partial structure of the fire damper leakage detection device in Example 1, which is mainly used to reflect the structure of the clamping part in the sealing clamping mechanism.

[0033] Figure 4 It is a structural cross-sectional view of the fire damper leakage detection device in Example 1.

[0034] Figure 5 yes Figure 4 The enlarged structural diagram of part A is mainly used to show the position of the sealing block.

[0035] Figure 6 It is a partial structural diagram of the fire damper leakage detection device in Example 2, which is mainly used to reflect the structure of the clamping part in the sealing clamping mechanism.

[0036] Figure 7 yes Figure 6 A magnified view of the structure of part B.

[0037] Figure 8 It is a partial structural schematic diagram of the fire damper leakage detection device in Example 2, which is mainly used to reflect the position of the sealing block.

[0038] Fig. 9 It is a structural cross-sectional view of the fire damper leakage detection device in Example 2.

[0039] Fig.10 yes Fig. 9 The enlarged structural diagram of part C in the middle is mainly used to reflect the connection structure between the sealing block and the workbench.

[0040] Description of reference numerals: 10, fire damper; 1, support assembly; 11, workbench; 111, ventilation hole; 112, support rod; 1121, fixing hole; 113, sleeve rod; 114, latch; 12, support frame; 121, mounting assembly; 1211, connecting ear plate; 122, first motor; 123, first screw rod; 124, first slider; 125, second motor; 126, second screw rod; 127, second slider; 13, pipe rack; 2 , measuring mechanism; 21, flow measuring part; 211, fan; 212, ball valve; 213, ventilation pipe; 214, flow meter; 22, pressure measuring part; 221, pressure pipe; 222, pressure gauge; 3. Sealing and clamping mechanism; 31, clamping part; 311, clamping cylinder; 312, pressure plate; 3121, air vent; 32, sealing part; 321, sealing ring; 322, sealing block; 323, elastic member; 324, guide rod; 325, guide sleeve. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-10 , further details of this application are given.

[0042] The embodiment of the present application discloses a fire damper air leakage detection device.

[0043] Example 1

[0044] Reference Figure 1 The fire damper air leakage detection device includes a support assembly 1, and the support assembly 1 includes a workbench 11, a support frame 12, and a pipe frame 13. The support frame 12 is fixedly installed on the workbench 11, and the pipe frame 13 is fixedly set on the ground and set beside the workbench 11. The fire damper air leakage detection device also includes a measuring mechanism 2 and a sealing and pressing mechanism 3.

[0045] The support assembly 1 is used to support the various components in the measuring mechanism 2 and the sealing and pressing mechanism 3. The measuring mechanism 2 is used to perform an air leakage test on the fire damper 10. The sealing and pressing mechanism 3 is used to press the fire damper 10 onto the workbench 11 to improve the measurement accuracy.

[0046] Reference Figure 1 and Figure 2 The measuring mechanism 2 includes a flow measuring unit 21 and a pressure measuring unit 22. The flow measuring unit 21 includes a ventilation pipe 213 fixedly mounted on the pipe rack 13, one end of the ventilation pipe 213 is used to connect to the air outlet of the fan 211, and the other end is connected to the workbench 11. The ventilation pipe 213 can connect the fan 211 with the fire damper 10 on the workbench 11. The end of the ventilation pipe 213 close to the fan 211 is connected to a ball valve 212 for controlling the opening and closing of the pipeline, and the end of the ventilation pipe 213 close to the workbench 11 is connected to a flow meter 214 for measuring the flow in the pipe, and the flow meter 214 can be a glass rotor flow meter. In this embodiment, two flow measuring units 21 are provided, and ventilation pipes 213 with different diameters and flow meters 214 with different ranges are used in the two flow measuring units 21. The ventilation pipe 213 with a larger diameter is correspondingly connected to the flow meter 214 with a larger range.

[0047] Reference Figure 1 and Figure 2 The pressure measuring unit 22 includes a pressure pipe 221 fixedly mounted on the pipe rack 13, one end of the pressure pipe 221 is connected to a pressure gauge 222, and the other end is connected to the workbench 11. The pressure pipe 221 can connect the pressure gauge 222 to the fire damper 10 on the workbench 11.

[0048] When the fire damper 10 is tested for air leakage, different flow measuring parts 21 are selected for different sizes of the fire damper 10 and different measurement requirements. The ball valve 212 in the selected flow measuring part 21 is opened, and the ball valves 212 in the other flow measuring parts 21 are closed. The fan 211 is driven to work, and the gas is passed through the ventilation pipe 213 into one side of the closed fire damper 10 fixedly placed on the workbench 11. The pressure gauge 222 measures the gas pressure, and the flow meter 214 measures the gas flow. When the pressure in the pipe reaches the specified value, the value of the flow meter 214 is read. If the fire damper 10 is completely closed, the value of the flow meter 214 is zero. If the reading of the flow meter 214 is not zero, the displayed value is the leakage of the fire damper 10.

[0049] Reference Figure 3 , multiple groups of mounting components 121 are fixedly connected at different positions on the support frame 12, and each group of mounting components 121 is composed of two parallel connecting ear plates 1211. The sealing pressing mechanism 3 includes a pressing part 31, and the pressing part 31 includes at least one vertically arranged pressing cylinder 311. In this embodiment, the pressing cylinder 311 is set to four. Each pressing cylinder 311 can be fixedly connected to any group of mounting components 121, and the cylinder body of a pressing cylinder 311 is placed between the two connecting ear plates 1211 and fixedly connected by bolts. The piston rod of the pressing cylinder 311 is fixedly connected with a pressing plate 312 by bolts, and the piston rods of the four pressing cylinders 311 are respectively connected to the four corners of the pressing plate 312. The pressing plate 312 can abut against the frame of the fire damper 10 fixedly placed on the workbench 11. The pressing plate 312 is provided with air vents 3121, and the air vents 3121 correspond to the inside of the frame of the fire damper 10.

[0050] Reference Figure 4 and Figure 5 The workbench 11 is provided with a ventilation hole 111, which connects the ventilation pipe 213 with one side of the fire damper 10. A sealing ring 321 is fixedly connected inside the workbench 11, and the sealing ring 321 abuts against the four sides of the frame of the fire damper 10.

[0051] When performing air leakage detection, the fire damper 10 is placed on the workbench 11, and one side frame of the fire damper 10 abuts against the sealing ring 321, driving the piston rods of the four clamping cylinders 311 to extend, driving the pressing plate 312 to descend and abut against the other side frame of the fire damper 10. This reduces gas leakage from the abutment between the workbench 11 and the fire damper 10 frame.

[0052] The implementation principle of Example 1 is as follows: when testing the air leakage of the fire damper 10, the fire damper 10 is placed on the workbench 11, one side frame of the fire damper 10 abuts against the sealing ring 321, and the piston rods of the four clamping cylinders 311 are driven to extend, driving the pressure plate 312 to descend and abut against the other side frame of the fire damper 10. A suitable flow measurement unit 21 is selected, the ball valve 212 in the flow measurement unit 21 is opened, and the ball valves 212 in the other flow measurement units 21 are closed. The fan 211 is driven to work, and the gas is passed through the ventilation pipe 213 into one side of the closed fire damper 10 fixedly placed on the workbench 11, the pressure gauge 222 measures the gas pressure, and the flow meter 214 measures the gas flow, so as to realize the air leakage test of the fire damper 10.

[0053] Example 2

[0054] Reference Figure 6 and Figure 7 The difference between this embodiment and the first embodiment is that the workbench 11 is fixedly connected with four vertically arranged support rods 112, and the four support rods 112 are respectively arranged at the four corners of the workbench 11, and each support rod 112 is horizontally provided with a plurality of fixing holes 1121, and the plurality of fixing holes 1121 are distributed along the vertical direction. The support frame 12 is fixedly connected with four vertically arranged sleeve rods 113, and the four sleeve rods 113 are arranged one by one with the four support rods 112, and one support rod 112 is inserted into the corresponding sleeve rod 113, and the support rod 112 is fixedly connected with the sleeve rod 113 by a latch 114, and the latch 114 is inserted into the sleeve rod 113 and any one of the fixing holes 1121.

[0055] By inserting the latch 114 into the sleeve rod 113 and any one of the fixing holes 1121 , the height of the support frame 12 can be adjusted to a limited extent, so that the detection device can be applicable to fire dampers 10 of different sizes.

[0056] Reference Figure 6The support frame 12 is provided with a driving assembly corresponding to the clamping cylinder 311, and the driving assembly includes a first motor 122 fixedly mounted on the support frame 12, the output shaft of the first motor 122 is arranged horizontally, the support frame 12 is rotatably connected with a first screw rod 123, the first screw rod 123 is coaxially fixedly connected with the output shaft of the first motor 122, a first slider 124 is threadedly sleeved on the first screw rod 123, and the first slider 124 is slidably connected with the support frame 12. A second motor 125 is fixedly connected to the first slider 124, the output shaft of the second motor 125 is arranged horizontally and perpendicular to the output shaft of the first motor 122, the first slider 124 is rotatably connected with a second screw rod 126, the second screw rod 126 is coaxially fixedly connected with the output shaft of the second motor 125, a second slider 127 is threadedly sleeved on the second screw rod 126, the second slider 127 is slidably connected with the support frame 12, and the second slider 127 is fixedly connected with the corresponding clamping cylinder 311.

[0057] The output shafts of the first motor 122 and the second motor 125 are driven to rotate, and the position of the pressing cylinder 311 can be changed without disassembling the pressing cylinder 311. When pressing fire dampers 10 of different sizes and shapes, pressing plates 312 of different sizes can be selected, and by changing the position of the pressing cylinder 311, the pressing plates 312 of different sizes can be stably installed on the piston rod of the pressing cylinder 311.

[0058] Reference Figure 8 The sealing portion 32 includes a plurality of sealing blocks 322 disposed around the ventilation hole 111, and adjacent sealing blocks 322 are in contact with each other. Fig. 9 and Fig.10 Each sealing block 322 is slidably connected to the workbench 11 in the vertical direction. A receiving groove is provided on the workbench 11, and an elastic member 323 is connected between each sealing block 322 and the bottom of the receiving groove. In this embodiment, the elastic member 323 is a spring. A vertically arranged guide rod 324 is fixedly connected to the lower end of the sealing block 322, and a guide sleeve 325 is fixedly connected in the receiving groove. The guide rod 324 is slidably inserted into the guide sleeve 325, and the elastic member 323 is sleeved outside the guide rod 324 and the guide sleeve 325.

[0059] When the fire damper 10 is not placed on the workbench 11, the upper end of the sealing block 322 is higher than the upper surface of the workbench 11. When the fire damper 10 is placed on the workbench 11, the sealing block 322 abutting against it moves downward due to the deadweight of the fire damper 10. At this time, the elastic member 323 is compressed, and the elastic force of the elastic member 323 abuts the sealing block 322 against the frame of the fire damper 10, reducing the leakage of gas from the abutment between the workbench 11 and the frame of the fire damper 10. By providing multiple sealing blocks 322, the sealing portion 32 can seal fire dampers 10 of different sizes and shapes.

[0060] The implementation principle of Example 2 is as follows: when the fire damper 10 is tested for air leakage, the fire damper 10 is placed on the workbench 11, and the deadweight of the fire damper 10 drives the sealing block 322 abutting against it to move downward, and the elastic member 323 is compressed, and the elastic force of the elastic member 323 abuts the sealing block 322 against the frame of the fire damper 10. The output shafts of the first motor 122 and the second motor 125 are driven to move in coordination, so that the clamping cylinder 311 moves to a suitable position, and the pressing plate 312 is connected to the clamping cylinder 311. The piston rods of the four clamping cylinders 311 are driven to extend, driving the pressing plate 312 to descend and abut against the frame on the other side of the fire damper 10. A suitable flow measuring unit 21 is selected, and the ball valve 212 in the flow measuring unit 21 is opened, and the ball valves 212 in the remaining flow measuring units 21 are closed. The fan 211 is driven to work, and the gas is passed through the ventilation pipe 213 into one side of the closed fire damper 10 fixedly placed on the workbench 11. The pressure gauge 222 measures the gas pressure, and the flow meter 214 measures the gas flow, so as to realize the air leakage test of the fire damper 10.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fire damper air leakage detection device, characterized in that: The invention comprises a support assembly (1), wherein the support assembly (1) comprises a workbench (11) for placing a fire damper (10), wherein a ventilation hole (111) is provided on the workbench (11), and a measuring mechanism (2) is arranged next to the workbench (11), wherein the measuring mechanism (2) comprises a flow measuring unit (21), wherein the flow measuring unit (21) comprises a ventilation pipe (213) connected to the workbench (11), wherein one end of the ventilation pipe (213) is used to communicate with a fan (211), and the other end of the ventilation pipe (213) is used to communicate with the inside of a closed frame of the fire damper (10) through the ventilation hole (111), wherein the ventilation pipe (213) is connected to a flow meter (214), and wherein the measuring mechanism (2) further comprises a pressure measuring unit (22). The pressure measuring part (22) comprises a pressure pipe (221) connected to the workbench (11), one end of the pressure pipe (221) is used to communicate with the inside of the closed fire damper (10) frame, and the other end is connected to a pressure gauge (222). The workbench (11) is provided with a sealing pressing mechanism (3) for pressing the fire damper (10), the sealing pressing mechanism (3) comprises a pressing part (31), the pressing part (31) comprises a pressing plate (312) connected to the workbench (11) in a vertical direction, the pressing plate (312) abuts against the frame of the fire damper (10), and the pressing plate (312) is provided with an air vent (3121). The sealing pressing mechanism (3) also comprises a pressure pipe (221) connected to the workbench (11) The sealing portion (32) is abutted against a frame of the fire damper (10), the sealing portion (32) comprises a plurality of sealing blocks (322) slidably connected to the workbench (11) in a vertical direction, the plurality of sealing blocks (322) are arranged around the ventilation hole (111), and adjacent sealing blocks (322) abut against each other, the support assembly (1) further comprises a support frame (12) connected to the workbench (11), the pressing portion (31) further comprises at least one pressing cylinder (311) for driving the pressing plate (312) to slide up and down, the pressing cylinder (311) is connected to the support frame (12), the pressing cylinder (311) is slidably connected to the support frame (12) in a horizontal direction, and the working The table (11) is fixedly connected with four vertically arranged support rods (112), the four support rods (112) are respectively arranged at the four corners of the workbench (11), each support rod (112) is horizontally provided with a plurality of fixing holes (1121), and the plurality of fixing holes (1121) are distributed along the vertical direction; the support frame (12) is fixedly connected with four vertically arranged sleeve rods (113), the four sleeve rods (113) are arranged in a one-to-one correspondence with the four support rods (112), one support rod (112) is inserted into the inside of the corresponding sleeve rod (113), the support rod (112) and the sleeve rod (113) are fixedly connected via a latch (114), and the latch (114) is inserted into the sleeve rod (113) and any one of the fixing holes (1121).

2. The fire damper air leakage detection device according to claim 1 is characterized in that: The sealing portion (32) comprises a sealing ring (321) fixedly connected to the workbench (11), and the sealing ring (321) fits around the frame of the fire damper (10).

3. The fire damper air leakage detection device according to claim 1 is characterized in that: At least one mounting assembly (121) is provided on the support frame (12), and the pressing cylinder (311) is detachably connected to the mounting assembly (121).

4. The fire damper air leakage detection device according to claim 1, characterized in that: The flow measurement unit (21) is provided with a plurality of flow measurement units.

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