Device and method for testing injection performance of fire extinguisher
By designing an automated fire extinguisher jet performance test device including a control cabinet, a test bench and an industrial camera, the problems of inaccurate measurement and complex operation in the prior art are solved, and accurate and automated detection of the fire extinguisher jet performance is achieved.
Patent Information
- Application Number
- CN202411870861.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-02-18
AI Technical Summary
Existing fire extinguisher jet performance tests mainly rely on manual or semi-automated inspection, resulting in inaccurate measurement, complex operation and low degree of automation, and the inability to output the changing curves of weight, pressure and time in real time.
An automated test device including a control cabinet, a fire extinguisher test bench assembly, an industrial camera, a tape ruler and a fire extinguisher collection frame was designed. The fire extinguisher jet performance is achieved through the industrial camera video ranging, electric opening method and real-time data acquisition. Automated detection.
The device can accurately measure the injection distance, lag time and residual rate, reduce artificial errors, improve the objectivity and scientificity of the test, and realize automated output of test results.
Smart Images
Figure CN119469861A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of fire extinguisher fire fighting equipment, in particular to a fire extinguisher spray performance test device and a test method. Background Art
[0002] Fire extinguishers are a kind of fire-fighting equipment with a wide range of applications. They are indispensable in both production and life. In order to improve the fire-fighting effect of fire extinguishers, the quality of fire extinguishers is particularly important. According to the factory inspection requirements of the national standard GB4351-2023 "Portable Fire Extinguishers", the spray performance test is a mandatory inspection item for fire extinguishers before they leave the factory, requiring manufacturers to be equipped with necessary production equipment and inspection and testing instruments to meet the needs of stable production of products that meet national standards.
[0003] At present, the fire extinguisher spray performance test conducted by fire extinguisher manufacturers or inspection and testing institutions adopts manual or semi-automatic testing, which cannot output the weight, pressure and time change curve in real time. At the same time, the manual spray performance test requires at least 3 people to work together to complete the task, one person to time, one person to operate, and one person to measure the spray distance. This test method is prone to manual timing errors. At the same time, manual testing cannot accurately measure the spray lag time and the spray distance measurement when the fire extinguishing agent is sprayed to 50%, which will lead to non-objective and inaccurate test results. The semi-automatic testing equipment on the market has only upgraded the opening method, and pneumatic opening replaces manual opening, which is no different from manual testing. At the same time, the pneumatic opening method requires an air compressor.
[0004] Therefore, there is an urgent need for a fire extinguisher spray performance test device and test method with a high degree of automation for testing the fire extinguisher spray performance. Summary of the invention
[0005] The purpose of the present invention is to provide a fire extinguisher spray performance test device and test method.
[0006] The present invention solves the problem that the fire extinguisher spray performance test currently conducted by fire extinguisher manufacturers or inspection and testing institutions adopts manual or semi-automatic testing, resulting in inaccurate fire extinguisher performance testing, inconvenient operation and low automation.
[0007] The present invention solves the technical problem by adopting the following technical solution: the present invention comprises a control cabinet (1), a fire extinguisher test bench assembly (2), an industrial camera (3), a tape measure (4) and a fire extinguishing agent collection frame (5); the fire extinguisher test bench assembly (2) is placed in the control cabinet (1), the fire extinguishing agent collection frame (5) is located on the side of the control cabinet (1), the industrial camera (3) is placed on the side front of the control cabinet (1) and on the side of the fire extinguishing agent collection frame (5); the tape measure (4) is arranged along the side of the fire extinguishing agent collection frame (5).
[0008] Furthermore, the control cabinet (1) comprises an industrial control integrated machine (1-1), a fire extinguisher up and down lifting mechanism button (1-2), an audible and visual alarm lamp (1-3), a control cabinet bracket (1-4), casters (1-5), a control cabinet bottom plate (1-6), and a glass door (1-7); the control cabinet (1) is open on the side facing the fire extinguishing agent collection frame (5), and the other sides are provided with glass doors (1-7).
[0009] Furthermore, the fire extinguisher test bench assembly (2) comprises a fire extinguisher weight measuring mechanism (2-1), a fire extinguisher left-right moving mechanism (2-2), a fire extinguisher up-down lifting mechanism (2-3), a fire extinguisher sprayer clamping mechanism (2-6) and a fire extinguisher opening and opening force measuring mechanism (2-7); the fire extinguisher left-right moving mechanism (2-2) is installed on the fire extinguisher weight measuring mechanism (2-1), and the fire extinguisher up-down lifting mechanism (2-3) is installed on the fire extinguisher left-right moving mechanism (2-2); the fire extinguisher up-down lifting mechanism (2-3) is also installed with a fire extinguisher opening and opening force measuring mechanism (2-7); the fire extinguisher sprayer clamping mechanism (2-6) is installed on the fire extinguisher weight measuring mechanism (2-1).
[0010] Furthermore, the fire extinguisher weight measurement mechanism (2-1) includes a weighing sensor (2-1-1) and a weighing sensor base plate (2-1-2); the weighing sensor (2-1-1) is installed at the four corners of the lower plane of the weighing sensor base plate (2-1-2) and is fixed to the control cabinet base plate (1-6); the fire extinguisher left and right moving mechanism (2-2) includes two linear guide rails (2-2-1) arranged in parallel on the weighing sensor base plate (2-1-2), a first slider (2-2-2) and a slide plate (2-2-3); the first slider (2-2-2) is installed on the lower plane of the slide plate (2-2-3), and the first slider (2-2-2) is adapted to the linear guide rail (2-2-1); The fire extinguisher lifting mechanism (2-3) comprises a fire extinguisher stand (2-3-1), a screw assembly (2-3-2), a fire extinguisher bracket (2-3-3), a connecting block (2-3-4), a coupling (2-3-5), and a lifting motor (2-3-6); the fire extinguisher stand (2-3-1) is fixed on the slide plate (2-2-3); the fire extinguisher bracket (2-3-3) and the screw assembly (2-3-2) are respectively located on both sides of the fire extinguisher stand (2-3-1), and are connected and fixed in the middle by the connecting block (2-3-4); the lifting motor (2-3-6) is connected to the screw assembly (2-3-2) by the coupling (2-3-5); the fire extinguisher stand (2-3-1) is fixed on the slide plate (2-2-3); the fire extinguisher bracket (2-3-3) and the screw assembly (2-3-2) are respectively located on both sides of the fire extinguisher stand (2-3-1), and are connected and fixed in the middle by the connecting block (2-3-4); the lifting motor (2-3-6) is connected to the screw assembly (2-3-2) by the coupling (2-3-5); A guide rail (2-3-7) is provided on the frame (2-3-1), and both ends of the screw assembly (2-3-2) slide along the guide rail (2-3-7); the fire extinguisher spray tool clamping mechanism (2-6) comprises a guide rail (2-6-1), a second slider (2-6-2), a spray tool fixing plate (2-6-3), a spray tool type holder (2-6-4), and a spray tube type holder (2-6-5); the guide rail (2-6-1) is fixed on the weighing sensor bottom plate (2-1-2), the guide rail (2-6-1) is arranged parallel to the linear guide rail (2-2-1), the spray tool fixing plate (2-6-3) is fixed on the second slider (2-6-2), and the spray tool type holder (2-6-4) is fixed The nozzle-type clamp (2-6-5) is fixed on both sides of the nozzle fixing plate (2-6-3), and the center line of the nozzle-type clamp (2-6-5) is kept in the same straight line as the center line of the nozzle-type clamp (2-6-4); the fire extinguisher opening and opening force measuring mechanism (2-7) includes an electric push cylinder bracket (2-7-1), an electric push cylinder (2-7-2), an electric push cylinder slider (2-7-3), an electric push cylinder locking bolt (2-7-4), a mother-and-child rivet (2-7-5), an electric push cylinder connecting block (2-7-6), a tension pressure sensor (2-7-7), a pressing contact (2-7-8), and a travel switch (2-7-9);The electric push cylinder bracket (2-7-1) is fixed on the fire extinguisher stand (2-3-1), and a first slide groove (2-7-1-1) and a second slide groove (2-7-1-2) are provided on the upper plane of the electric push cylinder bracket (2-7-1). The electric push cylinder locking bolt (2-7-4) is inserted into the electric push cylinder slider (2-7-3) and the second slide groove (2-7-1-2); the electric push cylinder (2-7-2) passes through the first slide groove (2 -7-1-1) is fixed to the electric push cylinder slider (2-7-3) by the parent-child rivet (2-7-5); the electric push cylinder connection block (2-7-6) is connected to the electric push cylinder piston rod (2-7-3-1) in the electric push cylinder (2-7-2); the tension and pressure sensor (2-7-7) is installed below the electric push cylinder connection block (2-7-6); and the pressing contact (2-7-8) is located on the tension and pressure sensor (2-7-7). ;
[0011] Furthermore, the electric push cylinder connecting block (2-7-6) is provided with a third slide groove (2-7-6-1) and a slide hole (2-7-6-2), the electric push cylinder piston rod (2-7-3-1) is inserted into the slide hole (2-7-6-2), and is inserted into the third slide groove (2-7-6-1) and connected thereto by using the mother-and-child rivet (2-7-5), and the travel switch (2-7-9) is installed on the electric push cylinder bracket (2-7-1).
[0012] Furthermore, the fire extinguisher up-and-down lifting mechanism (2-3) is also provided with a fire extinguisher clamping mechanism (2-5), and the fire extinguisher clamping mechanism (2-5) comprises a fire extinguisher fixing bracket (2-5-1) and a fixing belt (2-5-2); the fire extinguisher fixing bracket (2-5-1) is fixed to the fire extinguisher stand (2-3-1); and the fixing belt (2-5-2) is inserted into the fire extinguisher fixing bracket (2-5-1).
[0013] Furthermore, the fire extinguisher test bench assembly (2) also includes a fire extinguisher pressure measuring mechanism (2-4), and the fire extinguisher pressure measuring mechanism (2-4) includes a pressure sensor (2-4-1) and a pressure sensor connector (2-4-2); the pressure sensor (2-4-1) is threadedly connected to the pressure sensor connector (2-4-2), and the pressure sensor connector (2-4-2) is connected to the pressure gauge hole of the fire extinguisher or connected to the connection between the fire extinguisher nozzle and the hose.
[0014] Furthermore, the center of the lens of the industrial camera (3) is kept consistent with the height of the nozzle of the fire extinguisher.
[0015] The test steps for the injection performance test using this device are as follows:
[0016] Step 1: Turn on the power of the control cabinet (1), turn on the industrial computer (1-1), click the test software, enter the program interface, select the model and specification of the fire extinguisher, and for water-based fire extinguishers, fill in the density of the water-based fire extinguishing agent filled at 20°C measured in advance.
[0017] Step 2: Place the fire extinguisher on the fire extinguisher bracket (2-3-3), pull out the fire extinguisher safety pin, remove the fire extinguisher pressure gauge, and install the fire extinguisher pressure measuring mechanism (2-4) into the fire extinguisher pressure gauge hole, or install the fire extinguisher pressure measuring mechanism (2-4) into the connection between the fire extinguisher nozzle and the hose, and record the weight M of the fire extinguisher at this time 1 .
[0018] Step 3: Open the fire extinguisher up-and-down lifting mechanism (2-3), and adjust the fire extinguisher opening and opening force measuring mechanism (2-7) at the same time, so that the electric push cylinder slider (2-7-3) touches the end of the fire extinguisher pressure handle 6-1, and after rising to touch the travel switch (2-7-9), the up-and-down lifting mechanism (2-3) automatically stops.
[0019] Step 4: Fix the fire extinguisher with the fixing belt (2-5-2).
[0020] Step 5: Adjust the fire extinguisher left-right moving mechanism (2-2) or the fire extinguisher spray clamping mechanism (2-6) to keep the fire extinguisher nozzle in a horizontal state with the center ≥1m above the ground.
[0021] Step six: Use the sprayer-type holder (2-6-4) and the spray barrel-type holder (2-6-5) to fix the fire extinguisher nozzle or spray barrel 6-3.
[0022] Step 7: Click to start the test, the program starts a 5s countdown, and the spraying starts after the countdown ends. The spraying distance is measured manually. After starting the program, the tester immediately stands at the upwind side of the fire extinguisher spray flow and pays attention to the farthest point of the spray flow in real time. When the fire extinguisher sprays to 50% of the nominal weight of the fire extinguisher, the sound and light alarm (1-3) starts working, prompting the tester to visually estimate the spraying distance at this time.
[0023] Step 8: After the test, output the opening force, spray lag time, effective spray time, nominal spray residual rate, spray distance, and record the weight of the fire extinguisher M at this time. 2 .
[0024] Step 9: Calculate the remaining spray rate, filling volume and filling error, empty the remaining fire extinguishing agent, weigh it again, and record the weight of the fire extinguisher M at this time. 3 , injection residual rate calculation method: Calculation method of fire extinguishing agent filling error:
[0025] The steps for performing intermittent injection performance test using this device are as follows:
[0026] Follow the spray performance test steps 1 to 6, then click Start Test to open and close the fire extinguisher valve at 2s intervals until the fire extinguishing agent is completely sprayed; at the end of the test, output the spray lag time and nominal spray remaining rate for each interval; follow the spray performance test step 9 to calculate the accurate spray remaining rate.
[0027] The steps for conducting intermittent jet sealing performance test using this device are as follows:
[0028] Operate according to the spray performance test steps 1 to 6, and input half of the average effective spray time of the fire extinguisher at 20°C, then click to start the test. The fire extinguisher starts to spray until the set time, read and record the internal pressure of the fire extinguisher within 10 seconds from the time the valve is closed, and read the internal pressure again after 5 minutes. For carbon dioxide fire extinguishers, change the pressure measurement to weighing; at the end of the test, output the percentage of the second measured pressure (or fire extinguishing agent mass) after the fire extinguisher spraying is interrupted to the first measured pressure value (or fire extinguishing agent mass).
[0029] The beneficial effects of the present invention are as follows: the present invention is applicable to the pre-shipment inspection and type test of the inspection and testing institutions of the fire extinguisher manufacturers. The present invention has a compact structure and design, and the fire extinguisher can be moved up and down and left and right in the device to adjust its position. The operation is simple and more automated, and the application range is wide. It is applicable to portable fire extinguishers of various specifications and models on the market. The present invention uses automated means, including real-time output of weight, pressure and time change curves, video and image acquisition of industrial cameras, and manual assisted ranging and electric opening methods prompted by sound and light alarm lights, etc., to objectively and accurately determine its spraying performance, improve the accuracy and scientificity of fire extinguisher inspection, and avoid human error in the judgment of fire extinguisher performance inspection. The data collection during the spray test is accurate and the operation process is simple. The present invention can output the weight, pressure and time change curves in real time, and automatically output the effective spraying time, spray lag time, nominal spray remaining rate, spray distance, and pressure weight change percentage. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.
[0031] Figure 2 It is the front view of the present invention.
[0032] Figure 3 It is a right side view of the present invention.
[0033] Figure 4The utility model is a schematic diagram of the three-dimensional structure of the fire extinguisher test bench assembly of the present invention.
[0034] Figure 5 The invention is a schematic diagram of the combination of the fire extinguisher lifting mechanism, the fire extinguisher pressure measuring mechanism, the fire extinguisher clamping mechanism structure, and the fire extinguisher opening and opening force measuring mechanism.
[0035] Figure 6 It is a schematic diagram of the fire extinguisher opening and opening force measuring mechanism of the present invention.
[0036] Figure 7 It is a partial schematic diagram of the fire extinguisher opening and opening force measuring mechanism of the present invention.
[0037] Figure 8 It is a schematic diagram of the contact between the fire extinguisher of the present invention and the fire extinguisher opening and opening force measuring mechanism.
[0038] In the figure: 1: control cabinet; 2: fire extinguisher test bench assembly; 3: industrial camera 4: tape measure; 5: fire extinguishing agent collection frame; 1-1: industrial control integrated computer; 1-2: fire extinguisher up and down lifting mechanism button; 1-3: sound and light alarm light; 1-4: control cabinet bracket; 1-5: casters; 1-6: control cabinet bottom plate; 1-7: glass door; 2-1: fire extinguisher weight measurement mechanism; 2-2: fire extinguisher left and right movement mechanism; 2-3: fire extinguisher up and down lifting mechanism; 2-4: fire extinguisher pressure measurement Mechanism; 2-5: Fire extinguisher clamping mechanism; 2-6: Fire extinguisher sprayer clamping mechanism; 2-7: Fire extinguisher opening and opening force measurement mechanism; 2-1-1: Load cell; 2-1-2 Load cell base plate; 2-2-1: Linear guide; 2-2-2: First slider; 2-2-3: Slide plate; 2-3-1: Fire extinguisher stand; 2-3-2: Screw assembly; 2-3-3: Fire extinguisher bracket; 2-3-4: Connecting block; 2-3-5: Coupling; 2-3-5: Lift Lowering motor; 2-3-6: Lifting motor; 2-3-7: Guide rail; 2-4-1: Pressure sensor; 2-4-2: Pressure sensor connector; 2-5-1: Fire extinguisher fixing bracket; 2-5-2: Fixing belt; 2-6-1: Guide rail; 2-6-2: Second slide block; 2-6-3: Sprayer fixing plate; 2-6-4: Sprayer type holder; 2-6-5: Sprayer type holder; 2-7-1: Electric push cylinder bracket; 2-7-2: Electric push cylinder; 2-7-3: Electric Push cylinder slider; 2-7-4: Electric push cylinder locking bolt; 2-7-5: Mother-and-child rivet; 2-7-6: Electric push cylinder connecting block; 2-7-7: Pull pressure sensor; 2-7-8: Press contact; 2-7-9: Travel switch; 2-7-3-1: Electric push rod piston rod; 2-7-6-1: Slide groove; 2-7-6-2: Slide hole; 6: Fire extinguisher; 6-1: Fire extinguisher pressure handle; 6-2: Fire extinguisher nozzle; 6-3: Fire extinguisher nozzle or spray gun; 6-4: Fire extinguishing agent. DETAILED DESCRIPTION
[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0040] like Figure 1-3 As shown, the present invention includes a control cabinet 1, a fire extinguisher test bench assembly 2, an industrial camera 3, a tape measure 4 and a fire extinguishing agent collection frame 5. The fire extinguisher test bench assembly 2 is placed in the control cabinet 1, the fire extinguishing agent collection frame 5 is located on the side of the control cabinet 1, the industrial camera 3 is placed in front of the side of the control cabinet 1 and on the side of the fire extinguishing agent collection frame 5, and the lens center of the industrial camera 3 is kept consistent with the height of the fire extinguisher nozzle. The tape measure 4 is set along the side of the fire extinguishing agent collection frame 5 to assist the industrial camera 3 in shooting and the test personnel in measuring the spraying distance. The fire extinguishing agent collection frame 5 collects the sprayed fire extinguishing agent.
[0041] like Figure 1 As shown, the control cabinet 1 includes an industrial control integrated machine 1-1, a fire extinguisher lifting mechanism button 1-2, an audible and visual alarm lamp 1-3, a control cabinet bracket 1-4, casters 1-5, a control cabinet bottom plate 1-6, and a glass door 1-7; the control cabinet 1 is open on the side facing the fire extinguishing agent collection frame 5, and the other sides are provided with glass doors 1-7. The open side of the control cabinet 1 is used to test the spraying of the fire extinguisher test bench assembly 2.
[0042] like Figure 4 As shown, the fire extinguisher test bench assembly 2 includes a fire extinguisher weight measuring mechanism 2-1, a fire extinguisher left-right moving mechanism 2-2, a fire extinguisher up-and-down lifting mechanism 2-3, a fire extinguisher sprayer clamping mechanism 2-6, and a fire extinguisher opening and opening force measuring mechanism 2-7. The fire extinguisher left-and-right moving mechanism 2-2 is installed on the fire extinguisher weight measuring mechanism 2-1, and the fire extinguisher up-and-down lifting mechanism 2-3 is installed on the fire extinguisher left-and-right moving mechanism 2-2; the fire extinguisher up-and-down lifting mechanism 2-3 is also installed with a fire extinguisher opening and opening force measuring mechanism 2-7; the fire extinguisher sprayer clamping mechanism 2-6 is installed on the fire extinguisher weight measuring mechanism 2-1.
[0043] like Figure 4 As shown, the fire extinguisher weight measuring mechanism 2-1 includes a weighing sensor 2-1-1 and a weighing sensor base plate 2-1-2. The weighing sensor 2-1-1 is installed at the four corners of the lower plane of the weighing sensor base plate 2-1-2 and is fixed to the control cabinet base plate 1-6.
[0044] like Figure 4As shown, the fire extinguisher left-right moving mechanism 2-2 includes two linear guide rails 2-2-1 arranged in parallel on the weighing sensor bottom plate 2-1-2, a first slider 2-2-2 and a slide plate 2-2-3, the first slider 2-2-2 is installed on the lower plane of the slide plate 2-2-3, the first slider 2-2-2 is adapted to the linear guide rail 2-2-1, and the slide plate 2-2-3 slides left-right along the linear guide rail 2-2-1 using the first slider 2-2-2. The fire extinguisher left-right moving mechanism 2-2 is used to adjust the position of different fire extinguisher nozzles.
[0045] like Figure 5 As shown, the fire extinguisher lifting mechanism 2-3 includes a fire extinguisher stand 2-3-1, a screw assembly 2-3-2, a fire extinguisher bracket 2-3-3, a connecting block 2-3-4, a coupling (2-3-5), and a lifting motor 2-3-6. The fire extinguisher stand 2-3-1 is fixedly mounted on the slide 2-2-3 and serves as the core support for other components; the fire extinguisher bracket 2-3-3 and the screw assembly 2-3-2 are respectively located on both sides of the fire extinguisher stand 2-3-1, and are connected and fixed in the middle by a connecting block 2-3-4. The lifting motor 2-3-6 is installed on the fire extinguisher stand 2-3-1 and connected to the screw assembly 2-3-2 through a coupling 2-3-5. The fire extinguisher stand 2-3-1 is provided with guide rails 2-3-7, and two guide rails 2-3-7 are provided. Both ends of the screw assembly 2-3-2 are adapted to the guide rails 2-3-7 and slide along the guide rails 2-3-7. When the lifting motor 2-3-6 starts working, the screw assembly 2-3-2 moves up and down, thereby driving the fire extinguisher bracket 2-3-3 connected thereto to move up and down. The fire extinguisher bracket 2-3-3 is used to place the fire extinguisher.
[0046] like Figure 4 As shown, the fire extinguisher spray fixture clamping mechanism 2-6 is mainly used to keep the fire extinguisher nozzle 6-2 horizontal, including a guide rail 2-6-1, a second slider 2-6-2, a spray fixture fixing plate 2-6-3, a spray fixture type holder 2-6-4, and a spray barrel type holder 2-6-5. The guide rail 2-6-1 is fixed on the weighing sensor bottom plate 2-1-2, the guide rail 2-6-1 is arranged parallel to the linear guide rail 2-2-1, the spray fixture fixing plate 2-6-3 is fixed on the second slider 2-6-2, the spray fixture type holder 2-6-4 is fixed on both sides of the spray fixture fixing plate 2-6-3, the spray barrel type holder 2-6-5 is fixed on the spray fixture fixing plate 2-6-3, and the center line of the spray barrel type holder 2-6-5 is kept in the same straight line as the center line of the spray fixture type holder 2-6-4. Adjust the fire extinguisher left-right moving mechanism 2-2 or the fire extinguisher sprayer clamping mechanism 2-6 to make the fire extinguisher nozzle or spray barrel 6-3 in a horizontal state with the center ≥1m above the ground. The sprayer type clamp 2-6-4 and the spray barrel type clamp 2-6-5 fix the fire extinguisher nozzle or spray barrel 6-3.
[0047] like Figure 6, 7 As shown in Figures 1 and 8, the fire extinguisher opening and opening force measuring mechanism 2-7 includes an electric push cylinder bracket 2-7-1, an electric push cylinder 2-7-2, an electric push cylinder slider 2-7-3, an electric push cylinder locking bolt 2-7-4, a rivet 2-7-5, an electric push cylinder connecting block 2-7-6, a tension pressure sensor 2-7-7, a pressing contact 2-7-8, and a travel switch 2-7-9. The electric push cylinder bracket 2-7-1 is fixed on the fire extinguisher stand 2-3-1, and the electric push cylinder bracket 2-7-1 is provided with a first slide groove 2-7-1-1 and a second slide groove 2-7-1-2 on the plane. The electric push cylinder locking bolt 2-7-4 is inserted into the electric push cylinder slider 2-7-3 and the second slide groove 2-7-1-2; the electric push cylinder 2-7-2 is fixed to the electric push cylinder slider 2-7-3 by the rivet 2-7-5. The electric push cylinder connecting block 2-7-6 is connected to the electric push cylinder piston rod 2-7-3-1 in the electric push cylinder 2-7-2, the pulling pressure sensor 2-7-7 is installed below the electric push cylinder connecting block 2-7-6, and the pressing contact 2-7-8 is located on the pulling pressure sensor 2-7-7.
[0048] like Figure 7 As shown, the electric push cylinder connection block 2-7-6 is provided with a third slide groove 2-7-6-1 and a slide hole 2-7-6-2, the electric push cylinder piston rod 2-7-3-1 is inserted into the slide hole 2-7-6-), and is inserted into the third slide groove 2-7-6-1 and connected thereto by using a rivet 2-7-5. The length of the third slide groove 2-7-6-1 is the movable displacement of the electric push cylinder connection block 2-7-6 in the slide hole 2-7-6-2. The travel switch 2-7-9 is installed on the electric push cylinder bracket 2-7-1. Open the fire extinguisher lifting mechanism 2-3 and adjust the electric push cylinder slider 2-7-3, so that the end of the fire extinguisher pressure handle 6-1 rises to touch the pressing contact 2-7-8, and the pressing contact 2-7-8 follows the electric push cylinder piston rod 2-7-3-1 to drive the electric push cylinder connecting block 2-7-6 to rise until the electric push cylinder connecting block 2-7-6 touches the travel switch 2-7-9, and then the fire extinguisher lifting mechanism 2-3 is automatically stopped.
[0049] like Figure 5 As shown, the fire extinguisher lifting mechanism 2-3 is also provided with a fire extinguisher clamping mechanism 2-5. The fire extinguisher clamping mechanism 2-5 includes a fire extinguisher fixing bracket 2-5-1 and a fixing belt 2-5-2. The fire extinguisher fixing bracket 2-5-1 is fixed to the fire extinguisher stand 2-3-1; the fixing belt 2-5-2 is inserted into the fire extinguisher fixing bracket 2-5-1. After the fire extinguisher is installed on the fire extinguisher bracket 2-3-3, it is fixed by the fixing belt 2-5-2.
[0050] like Figure 5As shown, the fire extinguisher test bench assembly 2 also includes a fire extinguisher pressure measuring mechanism 2-4. The fire extinguisher pressure measuring mechanism 2-4 includes a pressure sensor 2-4-1 and a pressure sensor connector 2-4-2. The pressure sensor 2-4-1 is threadedly connected to the pressure sensor connector 2-4-2, and the pressure sensor connector 2-4-2 is connected to the fire extinguisher pressure gauge hole or connected to the connection between the fire extinguisher nozzle and the hose. During the test, pull out the fire extinguisher safety pin, remove the fire extinguisher pressure gauge, and install the fire extinguisher pressure measuring mechanism 2-4 into the fire extinguisher pressure gauge hole, and record the weight of the fire extinguisher at this time.
[0051] The use process of this device is: first place the fire extinguisher on the fire extinguisher bracket 2-3-3, and the fire extinguisher clamping mechanism 2-5 ensures that the fire extinguisher will not tip over. The fire extinguisher pressure measuring mechanism 2-4 is also installed on the fire extinguisher. The fire extinguisher nozzle 6-2 is kept horizontal, and the fire extinguisher nozzle or spray tube 6-3 is fixed on the fire extinguisher spray clamping mechanism 2-6. The position of the fire extinguisher is adjusted by the fire extinguisher left and right moving mechanism 2-2 and the fire extinguisher up and down lifting mechanism 2-3 to ensure that the fire extinguisher pressure handle 6-1 and the pressing contact 2-7-8 are easy to start the test and smoothly spray out the fire extinguishing agent 6-4. When starting the test of this device, start the power supply of the control cabinet 1, first output the start command to the industrial control integrated machine 1-1, and collect the feedback information of the weighing sensor 2-1-1, the pressure sensor 2-4-1, and the opening force pull pressure sensor 2-7-7 in real time, and output the test results after the test. The fire extinguisher test bench assembly 2 executes the opening command output by the industrial control integrated computer 1-1, and outputs the weight, pressure, and opening force information in real time. The fire extinguisher weight measurement mechanism 2-1 monitors the changes in the weight of the fire extinguisher in real time, and transmits the weight information to the industrial control integrated computer 1-1. The fire extinguisher left and right moving mechanism 2-2 or the fire extinguisher sprayer clamping mechanism 2-6 moves forward and backward according to the length of the spray hose, so that the fire extinguisher sprayer can be fixed and the nozzle can be kept at the starting point of the distance measurement. The fire extinguisher up and down lifting mechanism 2-3 keeps the fire extinguisher nozzle level with the fire extinguisher nozzle. The fire extinguisher pressure measurement mechanism 2-4 monitors the pressure changes of the fire extinguisher in real time, and feeds back the pressure information to the industrial control integrated computer 1-1 in real time. The fire extinguisher clamping mechanism 2-5 fixes the fire extinguisher so that the fire extinguisher will not tip over during the pressing process. The fire extinguisher opening and opening force measurement mechanism 2-7 executes the opening action output by the industrial control integrated computer 1-1, and feeds back the measured opening force to the industrial control integrated computer 1-1.
[0052] The test steps for the injection performance test using this device are as follows:
[0053] Step 1: Start the power of control cabinet 1, turn on the industrial computer 1-1, click the test software, enter the program interface, select the model and specification of the fire extinguisher. For water-based fire extinguishers, fill in the density of the water-based fire extinguishing agent filled at 20°C measured in advance.
[0054] Step 2: Place the fire extinguisher on the fire extinguisher bracket 2-3-3, pull out the fire extinguisher safety pin, remove the fire extinguisher pressure gauge, and install the fire extinguisher pressure measuring mechanism 2-4 into the fire extinguisher pressure gauge hole, or install the fire extinguisher pressure measuring mechanism 2-4 into the connection between the fire extinguisher nozzle and the hose, and record the weight of the fire extinguisher M at this time. 1 .
[0055] Step 3: Open the fire extinguisher lifting mechanism 2-3, and adjust the fire extinguisher opening and opening force measuring mechanism 2-7 at the same time, so that the electric push cylinder slider 2-7-3 touches the end of the fire extinguisher pressure handle 6-1, and after rising to touch the travel switch 2-7-9, the lifting mechanism 2-3 automatically stops.
[0056] Step 4: Secure the fire extinguisher with the fixing strap 2-5-2.
[0057] Step 5: Adjust the fire extinguisher left-right moving mechanism 2-2 or the fire extinguisher spray clamping mechanism 2-6 to keep the fire extinguisher nozzle in a horizontal state with the center ≥1m above the ground.
[0058] Step six: Use the spray-type holder 2-6-4 and the spray-tube holder 2-6-5 to fix the fire extinguisher nozzle or the spray-tube 6-3.
[0059] Step 7: Click to start the test, the program starts a 5s countdown, and the spraying starts after the countdown ends. The spraying distance is measured manually. After starting the program, the tester immediately stands at the upwind side of the fire extinguisher spray flow and pays attention to the farthest point of the spray flow in real time. When the fire extinguisher sprays to 50% of the nominal weight of the fire extinguisher, the sound and light alarm (1-3) starts working, prompting the tester to visually estimate the spraying distance at this time.
[0060] Step 8: After the test, output the opening force, spray lag time, effective spray time, nominal spray residual rate, spray distance, and record the weight of the fire extinguisher M at this time. 2 .
[0061] Step 9: Calculate the remaining spray rate, filling volume and filling error, empty the remaining fire extinguishing agent, weigh it again, and record the weight of the fire extinguisher M at this time. 3 , injection residual rate calculation method: Calculation method of fire extinguishing agent filling error:
[0062] The steps for conducting intermittent injection performance test using this device are as follows:
[0063] Follow the spray performance test steps 1 to 6, then click Start Test to open and close the fire extinguisher valve at 2s intervals until the fire extinguishing agent is completely sprayed; at the end of the test, output the spray lag time and nominal spray remaining rate for each interval; follow the spray performance test step 9 to calculate the accurate spray remaining rate.
[0064] The steps for conducting intermittent jet sealing performance test using this device are as follows:
[0065] Operate according to the spray performance test steps 1 to 6, and input half of the average effective spray time of the fire extinguisher at 20°C, then click to start the test. The fire extinguisher starts to spray until the set time, read and record the internal pressure of the fire extinguisher within 10 seconds from the time the valve is closed, and read the internal pressure again after 5 minutes. For carbon dioxide fire extinguishers, change the pressure measurement to weighing; at the end of the test, output the percentage of the second measured pressure (or fire extinguishing agent mass) after the fire extinguisher spraying is interrupted to the first measured pressure value (or fire extinguishing agent mass).
[0066] After the test, the opening force, injection delay time, effective injection time, nominal injection residual rate and injection distance are output.
[0067] In this embodiment, the spray delay time refers to the time obtained when the weight measuring mechanism 2-1 or the pressure measuring mechanism 2-4 of the fire extinguisher detects that the weight or pressure in the bottle begins to drop suddenly for dry powder, water-based, and clean gas fire extinguishers. For carbon dioxide fire extinguishers, the time obtained when the weight measuring mechanism 2-1 or the pressure measuring mechanism 2-4 of the fire extinguisher detects that the weight in the bottle begins to drop suddenly or the pressure in the bottle begins to rise suddenly is the spray delay time.
[0068] The effective spraying time refers to the time obtained when the fire extinguisher weight measuring mechanism 2-1 or the fire extinguisher pressure measuring mechanism 2-4 detects that the pressure in the bottle drops to the inflection point where the slope suddenly changes.
[0069] The injection residual rate is the weight or volume before injection minus the weight or volume after injection is completed divided by the nominal weight or volume.
Claims
1. A fire extinguisher spray performance test device, characterized in that The invention comprises a control cabinet (1), a fire extinguisher test bench assembly (2), an industrial camera (3), a tape measure (4) and a fire extinguishing agent collection frame (5); the fire extinguisher test bench assembly (2) is placed in the control cabinet (1), the fire extinguishing agent collection frame (5) is located on the side of the control cabinet (1), the industrial camera (3) is placed on the side front of the control cabinet (1) and on the side of the fire extinguishing agent collection frame (5); and the tape measure (4) is arranged along the side of the fire extinguishing agent collection frame (5).
2. A fire extinguisher spray performance test device according to claim 1, characterized in that The control cabinet (1) comprises an industrial control integrated machine (1-1), a fire extinguisher up and down lifting mechanism button (1-2), an audible and visual alarm lamp (1-3), a control cabinet bracket (1-4), casters (1-5), a control cabinet bottom plate (1-6), and a glass door (1-7); the control cabinet (1) is open on the side facing the fire extinguishing agent collection frame (5), and the other sides are provided with glass doors (1-7).
3. A fire extinguisher spray performance test device according to claim 1, characterized in that The fire extinguisher test bench assembly (2) comprises a fire extinguisher weight measuring mechanism (2-1), a fire extinguisher left-right moving mechanism (2-2), a fire extinguisher up-down lifting mechanism (2-3), a fire extinguisher sprayer clamping mechanism (2-6) and a fire extinguisher opening and opening force measuring mechanism (2-7); the fire extinguisher left-right moving mechanism (2-2) is installed on the fire extinguisher weight measuring mechanism (2-1), and the fire extinguisher up-down lifting mechanism (2-3) is installed on the fire extinguisher left-right moving mechanism (2-2); the fire extinguisher up-down lifting mechanism (2-3) is also installed with a fire extinguisher opening and opening force measuring mechanism (2-7); the fire extinguisher sprayer clamping mechanism (2-6) is installed on the fire extinguisher weight measuring mechanism (2-1).
4. A fire extinguisher spray performance test device according to claim 3, characterized in that The fire extinguisher weight measurement mechanism (2-1) comprises a weighing sensor (2-1-1) and a weighing sensor base plate (2-1-2); the weighing sensor (2-1-1) is installed at the four corners of the lower plane of the weighing sensor base plate (2-1-2) and is fixed to the control cabinet base plate (1-6); the fire extinguisher left-right moving mechanism (2-2) comprises two linear guide rails (2-2-1) arranged in parallel on the weighing sensor base plate (2-1-2), a first slider (2-2-2) and a slide plate (2-2-3); the first slider (2-2-2) is installed on the lower plane of the slide plate (2-2-3), and the first slider (2-2-2) is adapted to the linear guide rail (2-2-1); the fire extinguisher upper and lower The lifting mechanism (2-3) comprises a fire extinguisher stand (2-3-1), a screw assembly (2-3-2), a fire extinguisher bracket (2-3-3), a connecting block (2-3-4), a coupling (2-3-5), and a lifting motor (2-3-6); the fire extinguisher stand (2-3-1) is fixed on the slide plate (2-2-3); the fire extinguisher bracket (2-3-3) and the screw assembly (2-3-2) are respectively located on both sides of the fire extinguisher stand (2-3-1), and are connected and fixed in the middle by the connecting block (2-3-4); the lifting motor (2-3-6) is connected to the screw assembly (2-3-2) by the coupling (2-3-5); the fire extinguisher stand (2 -3-1) is provided with a guide rail (2-3-7), and both ends of the screw assembly (2-3-2) slide along the guide rail (2-3-7); the fire extinguisher sprayer clamping mechanism (2-6) comprises a guide rail (2-6-1), a second slider (2-6-2), a sprayer fixing plate (2-6-3), a sprayer type clamp (2-6-4), and a spray tube type clamp (2-6-5); the guide rail (2-6-1) is fixed on the weighing sensor bottom plate (2-1-2), the guide rail (2-6-1) is arranged parallel to the linear guide rail (2-2-1), the sprayer fixing plate (2-6-3) is fixed on the second slider (2-6-2), and the sprayer type clamp (2-6-4) is fixed On both sides of the spray fixture fixing plate (2-6-3), the spray barrel type holder (2-6-5) is fixed on the spray fixture fixing plate (2-6-3), and the center line of the spray barrel type holder (2-6-5) is kept in the same straight line as the center line of the spray fixture type holder (2-6-4); the fire extinguisher opening and opening force measuring mechanism (2-7) comprises an electric push cylinder bracket (2-7-1), an electric push cylinder (2-7-2), an electric push cylinder slider (2-7-3), an electric push cylinder locking bolt (2-7-4), a mother-and-child rivet (2-7-5), an electric push cylinder connecting block (2-7-6), a tension pressure sensor (2-7-7), a pressing contact (2-7-8), and a travel switch (2-7-9);The electric push cylinder bracket (2-7-1) is fixed on the fire extinguisher stand (2-3-1), and a first slide groove (2-7-1-1) and a second slide groove (2-7-1-2) are provided on the upper plane of the electric push cylinder bracket (2-7-1). The electric push cylinder locking bolt (2-7-4) is inserted into the electric push cylinder slider (2-7-3) and the second slide groove (2-7-1-2); the electric push cylinder (2-7-2) passes through the first slide groove (2 -7-1-1) is fixed to the electric push cylinder slider (2-7-3) by the parent-child rivet (2-7-5); the electric push cylinder connection block (2-7-6) is connected to the electric push cylinder piston rod (2-7-3-1) in the electric push cylinder (2-7-2); the tension and pressure sensor (2-7-7) is installed below the electric push cylinder connection block (2-7-6); and the pressing contact (2-7-8) is located on the tension and pressure sensor (2-7-7). ; 5. A fire extinguisher spray performance test device according to claim 4, characterized in that The electric push cylinder connecting block (2-7-6) is provided with a third slide groove (2-7-6-1) and a slide hole (2-7-6-2); the electric push cylinder piston rod (2-7-3-1) is inserted into the slide hole (2-7-6-2) and connected to the third slide groove (2-7-6-1) by using the mother-and-child rivet (2-7-5); the travel switch (2-7-9) is installed on the electric push cylinder bracket (2-7-1).
6. A fire extinguisher spray performance test device according to claim 4, characterized in that The fire extinguisher up-and-down lifting mechanism (2-3) is also provided with a fire extinguisher clamping mechanism (2-5), and the fire extinguisher clamping mechanism (2-5) comprises a fire extinguisher fixing bracket (2-5-1) and a fixing belt (2-5-2); the fire extinguisher fixing bracket (2-5-1) is fixed to the fire extinguisher stand (2-3-1); and the fixing belt (2-5-2) is inserted into the fire extinguisher fixing bracket (2-5-1).
7. A fire extinguisher spray performance test device according to claim 3, characterized in that The fire extinguisher test bench assembly (2) also includes a fire extinguisher pressure measuring mechanism (2-4), and the fire extinguisher pressure measuring mechanism (2-4) includes a pressure sensor (2-4-1) and a pressure sensor connector (2-4-2); the pressure sensor (2-4-1) is threadedly connected to the pressure sensor connector (2-4-2), and the pressure sensor connector (2-4-2) is connected to the pressure gauge hole of the fire extinguisher or connected to the connection between the fire extinguisher nozzle and the hose.
8. A fire extinguisher spray performance test device according to claim 1, characterized in that The center of the lens of the industrial camera (3) is kept consistent with the height of the nozzle of the fire extinguisher.
9. A method for testing the spray performance of a fire extinguisher, according to a device for testing the spray performance of a fire extinguisher according to claims 1-8, characterized in that The injection performance test steps include the following: Step 1: Turn on the power of the control cabinet (1), turn on the industrial computer (1-1), click the test software, enter the program interface, select the model and specification of the fire extinguisher, and for water-based fire extinguishers, fill in the density of the water-based fire extinguishing agent filled at 20°C measured in advance. Step 2: Place the fire extinguisher on the fire extinguisher bracket (2-3-3), pull out the fire extinguisher safety pin, remove the fire extinguisher pressure gauge, and install the fire extinguisher pressure measuring mechanism (2-4) into the fire extinguisher pressure gauge hole, or install the fire extinguisher pressure measuring mechanism (2-4) into the connection between the fire extinguisher nozzle and the hose, and record the weight M1 of the fire extinguisher at this time. Step 3: Open the fire extinguisher up-and-down lifting mechanism (2-3), and adjust the fire extinguisher opening and opening force measuring mechanism (2-7) at the same time, so that the electric push cylinder slider (2-7-3) touches the end of the fire extinguisher pressure handle (6-1), and after rising to touch the travel switch (2-7-9), the up-and-down lifting mechanism (2-3) automatically stops. Step 4: Fix the fire extinguisher with the fixing belt (2-5-2). Step 5: Adjust the fire extinguisher left-right moving mechanism (2-2) or the fire extinguisher spray clamping mechanism (2-6) to keep the fire extinguisher nozzle in a horizontal state with the center ≥1m above the ground. Step 6: Use the sprayer-type holder (2-6-4) and the spray barrel-type holder (2-6-5) to fix the fire extinguisher nozzle or spray barrel (6-3). Step 7: Click to start the test, the program starts a 5s countdown, and the spraying starts after the countdown ends. The spraying distance is measured manually. After starting the program, the tester immediately stands at the upwind side of the fire extinguisher spray flow and pays attention to the farthest point of the spray flow in real time. When the fire extinguisher sprays to 50% of the nominal weight of the fire extinguisher, the sound and light alarm (1-3) starts working, prompting the tester to visually estimate the spraying distance at this time. Step 8: After the test is completed, output the opening force, spray lag time, effective spray time, nominal spray remaining rate, spray distance, and record the weight of the fire extinguisher M2 at this time. Step 9: Calculate the remaining rate of injection, filling volume and filling error. After the remaining fire extinguishing agent is emptied, weigh it again and record the weight of the fire extinguisher at this time M3. The calculation method of the remaining rate of injection is: Calculation method of fire extinguishing agent filling error:
10. A fire extinguisher spray performance test method according to claim 9, characterized in that The spray performance test also includes an intermittent spray performance test and an intermittent spray sealing performance test; the steps of the intermittent spray performance test are as follows: operate according to the spray performance test steps one to six, and then click to start the test, so that the fire extinguisher valve is opened and closed at a time interval of 2s until the fire extinguishing agent is completely sprayed; at the end of the test, the spray lag time and the nominal spray remaining rate of each interval are output; according to the spray performance test step nine, the accurate spray remaining rate is calculated; the steps of the intermittent spray sealing performance test are as follows: operate according to the spray performance test steps one to six, and input half of the average effective spray time of the fire extinguisher at 20°C, and then click to start the test, the fire extinguisher starts to spray to the set time, read and record the internal pressure of the fire extinguisher within 10s from the valve closing, and read the internal pressure again after 5 minutes. For carbon dioxide fire extinguishers, the pressure measurement is changed to weighing; at the end of the test, the percentage of the pressure (or fire extinguishing agent mass) measured for the second time after the fire extinguisher spraying is interrupted to the pressure value (or fire extinguishing agent mass) measured for the first time is output.