Smoke sensing test structure with independent smoke supply mode
By introducing airflow distribution and recirculation devices into the smoke detector testing structure, the problem of mutual interference between wind speed and concentration in traditional smoke detectors is solved, achieving detection consistency of detectors under the same environment and improving detection accuracy.
Patent Information
- Application Number
- CN202423152221.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In traditional batch testing smoke boxes, the wind speed and smoke concentration of smoke detectors interfere with each other, resulting in poor consistency and affecting the accuracy of alarm threshold calibration.
The system employs an airflow distribution device and a test drawer structure to distribute smoke of constant concentration through main and branch pipes. Guide holes direct the smoke to each smoke detector, and a smoke return device prevents the smoke from spreading haphazardly, ensuring that each detector is in the same wind speed and concentration environment.
This technology enables multiple smoke detectors to detect smoke at the same wind speed and concentration, ensuring the consistency of alarm threshold calibration and improving the accuracy and consistency of detection.
Smart Images
Figure CN223582547U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a smoke sensing test technical field, concretely is a kind of smoke sensing test structure with independent smoke supply mode. BACKGROUND
[0002] Batch detection smoke box of smoke fire detector is a kind of detection equipment in fire-fighting electronic industry, for detecting multiple smoke fire detectors simultaneously.
[0003] And traditional batch detection smoke box, all adopt in a annular structure's box, arrange one set or multiple sets of drawer structure, place multiple smoke fire detectors, for factory calibration or alarm threshold detection, this scheme, on the windward wind speed and smoke concentration of multiple smoke fire detectors, there is the problem of mutual interference, lead to consistency is not good, not conducive to actual application.
[0004] Therefore, the technical personnel in the art provide a kind of smoke sensing test structure with independent smoke supply mode to solve the problems raised in the above background. UTILITY MODEL CONTENT
[0005] In view of the deficiencies of the prior art, the utility model provides a kind of smoke sensing test structure with independent smoke supply mode, solve the traditional batch detection smoke box mentioned in the above background technology, all adopt in a annular structure's box, arrange one set or multiple sets of drawer structure, place multiple smoke fire detectors, for factory calibration or alarm threshold detection, this scheme, on the windward wind speed and smoke concentration of multiple smoke fire detectors, there is the problem of mutual interference, lead to consistency is not good.
[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of smoke sensing test structure with independent smoke supply mode, including airflow distribution device and test drawer, the airflow distribution device is made of main pipe and shunt pipe, the shunt pipe is equidistantly installed at the top of main pipe and is communicated with the inside of main pipe, the test drawer is installed on the end of shunt pipe away from main pipe, the end of shunt pipe close to test drawer is all equidistantly provided with guide hole, the inside of test drawer is all installed with smoke fire detector, the outside of main pipe is installed with smoke supply channel communicated with the inside thereof;
[0007] The top of test drawer is provided with smoke backflow device.
[0008] By the technical scheme, the smoke gas is blown to the plurality of smoke fire detectors by the smoke gas distribution device under the constant concentration of the smoke gas, so that the wind speed and the concentration of the mixed smoke gas of each channel are consistent, the smoke fire detectors installed in the plurality of test drawers are in the same wind speed and concentration of the smoke gas environment, the consistency of the product alarm threshold calibration is ensured, and the actual application is facilitated.
[0009] Preferably, the flange is installed at the end of the smoke supply channel away from the main pipe.
[0010] By the technical scheme, the flange is used to conveniently connect the smoke supply channel with the output end of the external smoke generating equipment.
[0011] Preferably, the sealing door is rotatably connected to the outside of the test drawer, and the handle is installed on the outside of the sealing door.
[0012] By the technical scheme, the sealing door is used to seal the test drawer, and the handle is used to conveniently open and close the sealing door.
[0013] Preferably, the fixing plate is installed at the bottom of the main pipe, and the fixing holes are equidistantly formed on the outside of the fixing plate.
[0014] By the technical scheme, the fixing holes formed on the fixing plate are used to better stably install the equipment and place the equipment at a specified position for use.
[0015] Preferably, the smoke gas reflux device comprises a collecting pipe and a reflux pipe, the collecting pipe is installed at the top of the test drawer and communicates with the inside of the test drawer, and the reflux pipe is installed between the tops of the collecting pipes and communicates with the inside of the collecting pipes.
[0016] By the technical scheme, the smoke gas entering the inside of the test drawer is collected by the collecting pipes and finally all collected in the inside of the reflux pipe for reflux operation.
[0017] Preferably, the one-way valve is installed at the end of the inside of the collecting pipe close to the reflux pipe.
[0018] By the technical scheme, the one-way valve is used to ensure that the smoke gas can only enter the inside of the reflux pipe through the collecting pipe, so that the smoke gas is prevented from randomly flowing.
[0019] The smoke sensing test structure with the independent smoke supply mode has the beneficial effects as follows.
[0020] The smoke sensing test structure with independent smoke supply mode can make smoke enter the airflow distribution device from the smoke supply channel under constant concentration of smoke, pass through the guide holes arranged on the airflow distribution device, and blow to the plurality of smoke fire detectors, so that the wind speed and concentration of mixed smoke of each channel are consistent, the smoke fire detectors installed in the plurality of test drawers are in the same wind speed and concentration of smoke environment, the consistency of product alarm threshold calibration is ensured, and actual application is facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a sealing door closed state schematic view of the utility model;
[0022] Figure 2 It is a sealing door open state schematic view of the utility model;
[0023] Figure 3 It is an internal structure cut schematic view of the utility model;
[0024] Figure 4 It is an airflow distribution device and smoke supply channel structure schematic view of the utility model.
[0025] In the drawing: 1, main pipeline; 2, shunt pipeline; 3, test drawer; 4, guide hole; 5, smoke fire detector; 6, smoke supply channel; 7, collection pipeline; 8, backflow pipeline; 9, sealing door; 10, fixed plate; 11, fixed hole. DETAILED DESCRIPTION
[0026] The utility model is further described in detail below by means of drawings and embodiments.
[0027] Refer to Figure 1 、 Figure 2 、 Figure 3 And Figure 4 , the utility model embodiment provides a kind of smoke sensing test structure with independent smoke supply mode, including airflow distribution device and test drawer 3.The airflow distribution device is made of main pipeline 1 and shunt pipeline 2.Shunt pipeline 2 equidistantly is installed at the top of main pipeline 1 and is communicated with the inside of main pipeline 1, so that the smoke entering the inside of main pipeline 1 can be dispersed into the inside of each shunt pipeline 2.The bottom of main pipeline 1 is equipped with fixed plate 10, and fixed hole 11 is equidistantly arranged on the outside of fixed plate 10, and fixed hole 11 arranged on fixed plate 10 can better stably install equipment, so that it is stably placed in specified position and used.
[0028] The test drawer 3 is installed on the end of the shunt pipeline 2 away from the main pipeline 1, the end of the shunt pipeline 2 close to the test drawer 3 is provided with guide holes 4 at equal intervals, and the shunt pipeline 2 is communicated with the inside of the corresponding test drawer 3 through the guide holes 4. The inside of the test drawer 3 is provided with a smoke fire detector 5, and the smoke gas enters the shunt pipeline 2, and then is blown into the inside of the test drawer 3 through the guide holes 4, so that the wind speed and concentration of the mixed smoke gas in each channel are consistent, the smoke fire detector 5 installed in the test drawer 3 is in the same wind speed and concentration smoke gas environment, the consistency of the product alarm threshold calibration is ensured, and the actual application is facilitated. The outside of the test drawer 3 is rotatably connected with a sealing door 9, the outside of the sealing door 9 is provided with a handle, the test drawer 3 can be sealed through the sealing door 9, and the sealing door 9 can be conveniently opened and closed through the handle. The outside of the main pipeline 1 is provided with a smoke supply channel 6 communicated with the inside of the main pipeline 1, and the end of the smoke supply channel 6 away from the main pipeline 1 is provided with a flange. The smoke supply channel 6 can better guide the constant concentration smoke gas generated by the external smoke generating equipment into the inside of the main pipeline 1, and the flange can conveniently connect the smoke supply channel 6 with the output end of the external smoke generating equipment.
[0029] Referring to Figure 1 , Figure 2 and Figure 3 , in one aspect of the embodiment, the top of the test drawer 3 is provided with a smoke backflow device. The smoke backflow device comprises a collection pipeline 7 and a backflow pipeline 8. The collection pipeline 7 is installed on the top of the test drawer 3 and communicated with the inside of the test drawer 3, and the backflow pipeline 8 is installed on the top of the collection pipeline 7 and communicated with the inside of the collection pipeline 7. The smoke gas entering the inside of the test drawer 3 is collected through the collection pipeline 7, and finally all collected in the inside of the backflow pipeline 8, and subjected to backflow operation through the backflow pipeline 8. The end of the inside of the collection pipeline 7 close to the backflow pipeline 8 is provided with a one-way valve (not shown in the figure), and the one-way valve can ensure that the smoke gas can only enter the inside of the backflow pipeline 8 through the collection pipeline 7, so as to avoid the smoke gas from running around.
[0030] Working principle:
[0031] In use, first, the equipment is installed through the fixing plate 10 at the bottom of the main pipeline 1, and placed stably at the specified position through the fixing hole 11 for use, the flange at one end of the smoke supply channel 6 is used to connect the smoke supply channel 6 with the output end of the external smoke generating equipment, the sealing door 9 is opened through the handle, the smoke fire detector 5 to be detected is installed in each test drawer 3, and the sealing door 9 is closed, and then the use can be started.
[0032] The constant concentration of smoke generated by the external smoking device is made to enter the inside of the main pipeline 1 through the smoke supply channel 6, and the smoke after entering the inside of the main pipeline 1 is divided through the top shunt pipeline 2, and the smoke is blown to the inside of the multiple test drawers 3 through the guide holes 4, so that the wind speed and concentration of the mixed smoke of each channel are consistent, the smoke sensors 5 installed in the multiple test drawers 3 are in the same wind speed and concentration of smoke environment, and the problem of mutual interference of the wind speed and smoke concentration of the multiple smoke sensors 5 in the traditional equipment is avoided, the consistency of the product alarm threshold calibration is ensured, and the actual application is beneficial.
[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A smoke detector testing structure with an independent smoke supply method, comprising an airflow distribution device and a test drawer (3), characterized in that, The airflow distribution device consists of a main pipe (1) and a branch pipe (2). The branch pipe (2) is installed at equal intervals on the top of the main pipe (1) and communicates with the interior of the main pipe (1). The test drawer (3) is installed on the end of the branch pipe (2) away from the main pipe (1). The end of the branch pipe (2) near the test drawer (3) is provided with guide holes (4) at equal intervals. The interior of the test drawer (3) is equipped with a smoke detector (5). The outside of the main pipe (1) is equipped with a smoke supply channel (6) that communicates with the interior. A flue gas recirculation device is provided between the tops of the test drawers (3).
2. The smoke detection test structure with an independent smoke supply method according to claim 1, characterized in that: A flange is installed at the end of the smoke supply channel (6) away from the main pipeline (1).
3. The smoke detection test structure with an independent smoke supply method according to claim 1, characterized in that: Each of the test drawers (3) is rotatably connected to a sealing door (9), and each of the sealing doors (9) is equipped with a handle.
4. The smoke detection test structure with an independent smoke supply method according to claim 1, characterized in that: A fixing plate (10) is installed at the bottom of the main pipe (1), and fixing holes (11) are provided at equal intervals on the outer side of the fixing plate (10).
5. The smoke detection test structure with an independent smoke supply method according to claim 1, characterized in that: The flue gas recirculation device includes a collection pipe (7) and a recirculation pipe (8). The collection pipe (7) is installed on the top of the test drawer (3) and communicates with the interior of the test drawer (3). The recirculation pipe (8) is installed between the top of the collection pipe (7) and communicates with the interior of the test drawer (3).
6. The smoke detection test structure with an independent smoke supply method according to claim 5, characterized in that: One-way valves are installed inside the collection pipe (7) at one end near the return pipe (8).