Method and device for testing spraying range of fire-fighting lance

Abstract

The invention discloses a fire-fighting lance jet range testing method and testing device. The method comprises the following steps: S1, starting testing; s2, opening a fire-fighting lance to spray water flow; s3, after the fire-fighting lance sprays stably, the conveyor belt drives the sliding block to slowly move towards the falling point of the sprayed water flow; s4, after the continuously scattered water flow touches the water drop sensor, a computer in the control box can record the moving distance of the water drop sensor; s5, after the water drop sensor senses the water flow, the motor drives the water drop sensor to move back; s6, repeating S4 and S5 for ten times, and taking an average value in ten times as a final measurement result; and S7, completing the fire-fighting lance injection range test. The fire-fighting lance is erected on the clamping table, when the lance sprays water, the water drop sensor moves towards the water drop point of the sprayed water, after continuously scattered water flow touches the water drop detection sensor, the computer in the control box records the moving distance of the water drop detection sensor, and the spraying range test of the fire-fighting lance is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and more specifically, to a fire hose spray range testing method and testing device. Background Art

[0002] With the continuous development of commodity economy and urbanization, the number of high-rise buildings and large complexes has increased dramatically. At the same time, the fire safety situation is becoming more and more severe. Fire hose is the most basic, conventional and practical firefighting tool for firefighting. It converts low-speed water flow into high-speed jet, so that the water flow can obtain sufficient flow rate when leaving the nozzle of the hose, increase the range of the hose or change the shape of the water flow to extinguish various fires. It has the characteristics of long range, large flow rate and strong impact. Therefore, its quality directly affects the fire extinguishing efficiency.

[0003] At present, the spray range test of fire hoses is completed by at least two inspectors using visual inspection and rulers to measure the range. However, this method cannot automatically and accurately capture the farthest point where the water jet of the hose on the spray axis is continuously scattered, which can easily cause errors in the range test results. The test process is time-consuming and labor-intensive, and cannot achieve an efficient test level. Therefore, it is urgent to improve this. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a fire water gun spray range test method and test device. The fire water gun is mounted on a clamping table. When the water gun sprays, the water drop sensor moves toward the landing point of the sprayed water. When the continuously scattered water flow touches the water drop detection sensor, the computer in the control box records the movement distance of the water drop detection sensor, thereby realizing the spray range test of the fire water gun.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] The invention discloses a method for testing the spray range of a fire-fighting water gun, comprising the following steps:

[0007] S1. When the wind speed sensor senses that the external wind speed is less than or equal to 2m / S, the test starts;

[0008] S2. Start the water supply pipeline system. When the inlet pressure of the fire hose reaches the rated spray pressure value, open the fire hose to spray water;

[0009] S3. When the fire hose sprays stably, the control box controls the motor to start, driving the conveyor belt to work, and the conveyor belt drives the slider to move slowly in the direction of the spray water flow landing point;

[0010] S4. When the continuously scattered water stream touches the water drop sensor, the computer in the control box can record the distance the water drop sensor moves;

[0011] S5. When the water drop sensor senses the water flow, the motor drives the water drop sensor to move back, and the water drop sensor moves to the initial position after passing through the scraper, and the water on the surface of the water drop sensor can be scraped off by the scraper;

[0012] S6, repeat S4 and S5 ten times, and take the average value of the ten times as the final measurement result;

[0013] S7. Complete the fire hose spray range test.

[0014] Furthermore, before step S1, the method further includes:

[0015] a. Component assembly: move the clamping table, slide rail assembly, wind speed sensor, water drop sensor, slider, control box and test fire hose to the outdoors;

[0016] The fire hose is fixed in the hose clamp, the control box and the wind speed sensor are arranged on the side of the slide rail group, and the fire hose is connected to the water supply pipeline system;

[0017] The first slide rail and the second slide rail are unfolded and aligned at both ends, and then fixed by the first slide sleeve. At this time, the conveyor belt is flattened, and the conveyor belt is tensioned by the first handle bolt;

[0018] Insert the slider equipped with the water drop sensor from one end of the first slide rail, move the conveyor belt so that the insert is engaged with the conveyor belt, and move the slider to the initial position so that the slider equipped with the water drop sensor is connected to the conveyor belt of the slide rail assembly;

[0019] The length of the rail group is between 4m and 5m. According to the spray range standard of the corresponding model of fire hose, the rail group should be placed at a suitable position in the spray direction of the fire hose;

[0020] b. Position adjustment: Move the water gun clamp up and down so that the height from the center of the fire hose outlet to the upper surface of the clamping table is 1 meter. The water gun clamp is set at an angle, and the angle between the water gun clamp and the horizontal plane is 30°;

[0021] Turn on the laser instrument and adjust the position of the slide rail assembly so that the laser line of the laser instrument passes through the centering hole in the centering block and is aligned with the center line of the first baffle and the spray axis of the fire hose respectively;

[0022] Turn on the distance sensor and use the computer in the control box to record the distance from the distance sensor to the initial position of the water drop sensor.

[0023] A fire hose spray range test device is applied to a fire hose spray range test method, comprising a movable clamping platform, a slide rail group, a water drop sensor, a control box and a wind speed sensor, wherein the clamping platform can clamp the fire hose, the water drop sensor is connected to the slide rail group and can move back and forth along the length direction of the slide rail group, the clamping platform and the slide rail group are located on the same straight line, the control box can control the movement of the water drop sensor, and the wind speed sensor can sense the wind speed.

[0024] Furthermore, the clamping platform includes two support rods, a water gun clamp is connected between the two support rods, the water gun clamp can move up and down along the support rods, and the water gun clamp can fix the fire water gun;

[0025] A second sliding sleeve is provided on both sides of the water gun clamp, the second sliding sleeve is provided on the outside of the support rod, the second sliding sleeve and the support rod are fixed by a second handle bolt, a third handle bolt is threadedly connected to the outer surface of the water gun clamp, and the fire water gun and the water gun clamp are fixed by the third handle bolt.

[0026] Furthermore, the slide rail assembly is connected to a support frame near the clamping table, a scraper is fixed to the side of the support frame, and the lower part of the scraper can abut against the upper part of the water drop sensor;

[0027] A centering block is provided on the upper part of the support frame, a first baffle is provided on the end of the slide rail assembly away from the clamping table, and a laser instrument is installed on the upper part of the clamping table. The laser line of the laser instrument can pass through the centering hole in the centering block and be aligned with the center line of the first baffle and the spray axis of the fire hose respectively.

[0028] Furthermore, a conveyor belt is provided inside the slide rail group along its length direction, the conveyor belt is transmitted by a motor, a slider is connected to the upper part of the conveyor belt, the water drop sensor is fixed to the slider, and the conveyor belt can drive the slider to move along the length direction of the slide rail group.

[0029] Furthermore, the slider includes two guide plates, the slide rail group includes a guide groove, the guide plate passes through the guide groove, an insert is fixed between the two guide plates, a plurality of first teeth are provided on the surface of the conveyor belt, a plurality of second teeth are provided at the bottom of the insert, and the first teeth are meshed with the second teeth.

[0030] Furthermore, the inner wall of the guide plate is provided with a first convex rib, the upper part of the embedment block is provided with a supporting rib, the supporting rib abuts against the upper part of the first convex rib, the outer wall of the guide plate is respectively provided with a second convex rib and a connecting rib, the second convex rib is located below the guide groove, the connecting rib is located above the slide rail group, a rotatable roller is connected below the connecting rib, and the roller abuts against the upper part of the slide rail group.

[0031] Further, the slide rail assembly includes a first slide rail and a second slide rail, and the first slide rail and the second slide rail are connected by a first sliding sleeve;

[0032] The aligned ends of the first slide rail and the second slide rail are respectively inserted into the second slide sleeve, first protrusions are respectively provided on both sides of one end of the first slide rail, and second protrusions are respectively provided on both sides of the second slide rail close to one end of the first slide rail, and first handle bolts are threadedly connected on both sides of the first slide sleeve, and the first handle bolt can be inserted between the first protrusion and the second protrusion on the same side to enable the first slide rail and the second slide rail to expand outward.

[0033] Furthermore, a water baffle is provided on the side of the sliding block, a second baffle is provided under the water baffle, and a distance sensor is installed on the side of the clamping platform, and the distance sensor is directly facing the second baffle.

[0034] The beneficial effects of the present invention are:

[0035] 1. The range test results obtained by the present invention are more accurate than those obtained by the traditional method. In particular, when the test results are at the critical value required by the standard, it is possible to more accurately judge whether the fire hose test sample meets the standard requirements, thereby greatly improving the accuracy of the test results.

[0036] 2. In the present invention, the clamping table, the slide rail group, the wind speed sensor, the water drop sensor, the slider and the control box are all separately arranged and can be moved. Through this design, a mobile fire hose spray range test can be created, which not only greatly reduces the occupied space of the device of the present invention, but also can be used at any time, greatly improving flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A structural schematic diagram of this embodiment;

[0038] Figure 2 It is a schematic diagram of the local structure of this embodiment;

[0039] Figure 3 It is a schematic diagram of the local structure of this embodiment;

[0040] Figure 4 It is a partial cross-sectional view of the main view of this embodiment;

[0041] Figure 5 is a partial cross-sectional view of the side view of this embodiment;

[0042] Figure 6 for Figure 5 A magnified view at point A;

[0043] Figure 7 It is a partial cross-sectional view of the top view of this embodiment;

[0044] Figure 8 This is the interface diagram of the computer software data terminal in the control box;

[0045] Fig. 9 This is the software parameter setting interface diagram.

[0046] Reference numerals: 1, clamping table; 11, support rod; 12, laser instrument; 13, distance sensor; 14, pedal; 15, universal wheel; 16, support block; 2, slide rail assembly; 21, first slide rail; 211, first protrusion; 22, second slide rail; 221, second protrusion; 23, motor; 24, conveyor belt; 241, first tooth; 25, guide groove; 26, first baffle; 27, support frame; 271, centering block; 28, scraper; 29, support seat; 3, first sliding sleeve; 31 , first handle bolt; 4, slider; 41, guide plate; 42, first convex rib; 43, second convex rib; 44, connecting rib; 45, roller; 46, water baffle; 47, second baffle; 48, insert; 481, second tooth; 482, supporting rib; 49, connecting piece; 5, water drop sensor; 6, water gun clamp; 61, second sliding sleeve; 62, second handle bolt; 63, third handle bolt; 7, wind speed sensor; 8, control box; 9, fire hose; 100, water supply pipeline system. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figures 1 to 9 As shown, a fire hose 9 spray range test device includes a clamping table 1, a slide rail group 2, a water drop sensor 5, a control box 8 and a wind speed sensor 7;

[0049] like Figure 3As shown, the clamping platform 1 can clamp the fire-fighting water gun 9, and the clamping platform 1 includes two support rods 11, and a water gun clamp 6 is connected between the two support rods 11. The water gun clamp 6 is tilted, and the angle between the water gun clamp 6 and the horizontal plane is 30°. The water gun clamp 6 can move up and down along the support rod 11, and the water gun clamp 6 can fix the fire-fighting water gun 9. Specifically, a second sliding sleeve 61 is provided on both sides of the water gun clamp 6, and the second sliding sleeve 61 is sleeved on the outside of the support rod 11. The second sliding sleeve 61 and the support rod 11 are fixed by a second handle bolt 62. The outer surface of the water gun clamp 6 is threadedly connected with a third handle bolt 63, and the fire-fighting water gun 9 is fixed to the water gun clamp 6 by the third handle bolt 63. When installing the fire-fighting water gun 9, first, The fire hose 9 is inserted into the hose clamp 6, and the third handle bolt 63 is turned to press against the side of the fire hose 9 to fix the fire hose 9 and the hose clamp 6. The position height of the hose clamp 6 is adjusted by moving the hose clamp 6 up and down, so that the height from the center of the outlet of the fire hose 9 to the upper surface of the clamping platform 1 is 1 meter, and the upper surface of the water drop sensor 5 is flush with the upper surface of the clamping platform 1. Finally, the second handle bolts 62 on both sides are turned to fix the position height of the hose clamp 6 to fix the position of the fire hose 9. Through this structure, it can effectively ensure that not only the angle between fire hoses 9 of different specifications and models and the ground is 30°, but also the test position height of the fire hose 9 can be guaranteed, thereby improving the accuracy of the test results.

[0050] The clamping platform 1 is movable, and a universal wheel 15 is connected to the lower part of the clamping platform 1. A pedal 14 is provided on the side of the clamping platform 1 away from the slide rail group 2, and a support block 16 is provided at the lower part of the pedal 14. By providing the universal wheel 15, the movement of the clamping platform 1 is facilitated, thereby realizing the mobile design of the present invention. By providing the pedal 14, during the test, the operator can stand on the upper part of the pedal 14 and hold the fire hose 9 with both hands, which can not only prevent the clamping platform 1 from moving during the test, but also stabilize the fire hose 9, thereby greatly improving the reliability during the test.

[0051] like Figure 1 , Figure 2 and Figure 4As shown, the slide rail group 2 is arranged on the side of the clamping platform 1, and the clamping platform 1 and the slide rail group 2 are located on the same straight line. The water drop sensor 5 is connected to the slide rail group 2 and can move back and forth along the length direction of the slide rail group 2. Specifically, a conveyor belt 24 is provided in the slide rail group 2 along its length direction, and the conveyor belt 24 is transmitted by a motor 23. Conveying rollers (not shown in the figure) are connected near both ends of the slide rail group 2. The conveyor belt 24 is sleeved on the outside of the conveyor rollers. The motor 23 is connected to one of the conveyor rollers, and the conveyor roller is driven to rotate by the motor 23, thereby driving the conveyor belt 24 to move. A slider 4 is connected to the upper part of the conveyor belt 24, and the water drop sensor 5 is fixed to the slider 4. The conveyor belt 24 can drive the slider 4 to move along the length direction of the slide rail group 2. When the fire hose 9 is spraying, the water flow of the fire hose 9 is contacted with the water drop sensor 5 by moving the water drop sensor 5. The contact position is the water drop point of the fire hose 9. By calculating the moving distance of the water drop sensor 5, the spraying range of the fire hose 9 can be measured.

[0052] like Figures 4 to 6 As shown, the slider 4 includes two guide plates 41, and the slide rail group 2 includes a guide groove 25. The guide plate 41 passes through the guide groove 25. An insert 48 is fixed between the two guide plates 41. The insert 48 and the slider 4 are fixed by a connecting member 49. The connecting member 49 is a bolt. The conveyor belt 24 is a belt. The outer surface of the conveyor belt 24 is a tooth surface. The outer surface of the conveyor belt 24 is provided with a plurality of first teeth 241. The lower part of the insert 48 is provided with a plurality of second teeth 481. The first teeth 241 are meshed with the second teeth 481. Through the cooperation of the first teeth 241 and the second teeth 481, not only can the connection between the slider 4 and the conveyor belt 24 be realized, but when the conveyor belt 24 is conveyed, it can synchronously drive the slider 4 to move. Moreover, the two ends of the slide rail group 2 are open. When the conveyor belt 24 drives the slider 4 to move to its end, the slider 4 can be separated from the conveyor belt 24, thereby realizing the detachable design of the slider 4 and the conveyor belt 24, thereby realizing the movable design of the present invention.

[0053] Among them, the inner wall of the guide plate 41 is provided with a first convex rib 42, the upper part of the insert block 48 is provided with a support rib 482, and the support rib 482 abuts against the upper part of the first convex rib 42. The outer wall of the guide plate 41 is respectively provided with a second convex rib 43 and a connecting rib 44, the second convex rib 43 is located below the guide groove 25, and the connecting rib 44 is located above the slide rail group 2. A rotatable roller 45 is connected below the connecting rib 44, and the roller 45 abuts against the upper part of the slide rail group 2. By setting the first convex rib 42, the fixing effect of the support rib 48 can be improved, so that the structure is more reliable. The second convex rib 43 and the slide rail group 2 are clearance-matched at the lower surface of the guide groove 25. By setting the second convex rib 43, it can play a guiding and limiting role in the movement of the slider 4. By setting the roller 45, it can not only support the slider 4, but also make the slider 4 move more smoothly.

[0054] like Figure 2 , Figure 4 and Figure 5 As shown, the slide rail group 2 includes a first slide rail 21 and a second slide rail 22, and the first slide rail 21 and the second slide rail 22 are connected by a first slide sleeve 3. The length of the slide rail group 2 formed by splicing the first slide rail 21 and the second slide rail 22 is between 4 meters and 5 meters. Since the conveyor belt 24 is a belt with a soft material, the slide rail group 2 is configured to be the first slide rail 21 and the second slide rail 22. When not in use, the first slide rail 21 and the second slide rail 22 can be placed side by side, which greatly facilitates the storage and movement of the slide rail group 2. When needed, it is connected by the first slide sleeve 3, thereby realizing the mobile design of the present invention.

[0055] like Figure 7 As shown, the ends of the first slide rail 21 and the second slide rail 22 that are aligned are respectively inserted into the first slide sleeve 3, and the first slide rail 21 is respectively provided with first protrusions 211 on both sides of one end, and the second slide rail 22 is respectively provided with second protrusions 221 on both sides close to the end of the first slide rail 21, and the first slide sleeve 3 is threadedly connected with first handle bolts 31 on both sides, and the first handle bolts 31 can be inserted between the first protrusion 211 and the second protrusion 221 on the same side, so that the first slide rail 21 and the second slide rail 22 can expand outwards, and the first protrusion 21 The first slide rail 21 is provided with a first protrusion 211 and a second protrusion 221 on a side opposite to each other. When the first slide rail 21 is connected with the second slide rail 22 through the first sliding sleeve 3, by screwing the first handle bolt 31, the end of the first handle bolt 31 abuts against the first protrusion 211 and the second protrusion 221 on a side opposite to each other, and the first slide rail 21 and the second slide rail 22 can be moved away from each other, so that the conveyor belt 24 can be tightened, the conveying tension of the conveyor belt 24 can be increased, and the conveyor belt 24 can be prevented from being deformed during the conveying process, resulting in the conveyor belt 24 and the slider 4 slipping, thereby effectively improving the reliability of the structure.

[0056] like Figure 1 and Figure 2 As shown, the slide rail group 2 is connected to a support frame 27 near the clamping table 1, and a scraper 28 is fixed to the side of the support frame 27. The lower part of the scraper 28 can abut against the upper part of the water drop sensor 5. When the water drop sensor 5 contacts the water flow sprayed by the fire hose 9, the water drop sensor 5 moves back and passes through the scraper 28. The scraper 28 can scrape off the water droplets on the surface of the water drop sensor 5, which effectively ensures that there are no water droplets on the surface of the water drop sensor 5 when testing again, which is beneficial to improving the accuracy of the test results.

[0057] A centering block 271 is provided on the upper part of the support frame 27, and a first baffle 26 is provided on the end of the slide rail group 2 away from the clamping platform 1. A laser instrument 12 is installed on the upper part of the clamping platform 1. The laser line of the laser instrument 12 can pass through the centering hole in the centering block 271, and be aligned with the center line of the first baffle 26 and the spray axis of the fire hose 9 respectively. By setting the laser instrument 12, it can effectively ensure that the spray port of the fire hose 9 and the slide rail group 2 are located in the same straight line, which not only ensures that the water flow sprayed by the fire hose 9 can contact the water drop sensor 5, but also greatly improves the accuracy of the spray range.

[0058] A water baffle 46 is provided on the side of the slider 4, and a second baffle 47 is provided at the lower part of the water baffle 46. A distance sensor 13 is installed on the side of the clamping table 1, and the distance sensor 13 is opposite to the second baffle 47. The distance sensor 13 is an infrared rangefinder. By setting the distance sensor 13 and the second baffle 47, the moving distance of the water drop sensor 5 can be measured with high accuracy. By setting the water baffle 46, the water droplets sprayed by the fire hose 9 can be effectively prevented from affecting the sensing of the distance sensor 13, thereby improving the reliability of the structure.

[0059] A plurality of support seats 29 are installed at the lower part of the slide rail assembly 2. By providing the support seats 29, the slide rail assembly 2 can be placed on the ground more stably.

[0060] The control box 8 is provided with a computer, through which the water drop sensor 5 can be controlled to move, and the wind speed sensor 7 can sense the wind speed, specifically, as follows: Figure 8 and Fig. 9 The interface diagram of the software in the computer in the control box 8 is shown. When in use, click the "Settings" button of the data processing terminal to enter the parameter setting interface and input relevant data; when the wind speed meets the requirements, click automatic operation, the computer controls the motor 23 to work, and drives the water drop sensor 5 to move toward the direction of the jet water flow falling point. When the water flow continuously scattered by the fire hose 9 touches the water drop sensor 5, the distance sensor 13 feeds back the distance moved by the water drop sensor 5 to the computer and records it; the automatic cycle is repeated ten times, and each measurement result is recorded on the interface of the data processing terminal, and the average value of ten times is displayed at the test result. Among them, the program code of the software is not the content to be protected by the present invention. Therefore, the software production process and program code are not repeated in the present invention.

[0061] A fire hose spray range test method using a fire hose spray range test device comprises the following steps:

[0062] a. Component assembly: move the clamping table 1, the slide rail assembly 2, the wind speed sensor 7, the water drop sensor 5, the slider 4, the control box 8 and the test fire hose 9 to the outdoors;

[0063] The fire hose 9 is fixed in the hose clamp 6, the control box 8 and the wind speed sensor 7 are arranged on the side of the slide rail group 2, and the fire hose 9 is connected to the water supply pipeline system 100;

[0064] The first slide rail 21 and the second slide rail 22 are unfolded and aligned at both ends, and then fixed by the first slide sleeve 3. At this time, the conveyor belt 24 is flattened, and the conveyor belt 24 is tightened by the first handle bolt 31;

[0065] Insert the slider 4 equipped with the water drop sensor 5 from one end of the first slide rail 21, move the conveyor belt 24 so that the insert 48 engages with the conveyor belt 24, and move the slider 4 to the initial position so that the slider 4 equipped with the water drop sensor 5 is connected to the conveyor belt 24 of the slide rail group 2;

[0066] According to the spray range standard of the corresponding model of fire hose gun, place the rail group at a suitable position in the spray direction of the fire hose gun 9;

[0067] b. Position adjustment: Move the water gun clamp 6 up and down so that the height from the center of the outlet of the fire water gun 9 to the upper surface of the clamping platform 1 is 1 meter, and the outlet of the fire water gun 9 is flush with the sensing part of the distance sensor 13;

[0068] Turn on the laser instrument 12 and adjust the position of the slide rail assembly 2 so that the laser line of the laser instrument 12 passes through the centering hole in the centering block 271 and is aligned with the center line of the first baffle 26 and the spray axis of the fire hose 9 respectively;

[0069] Turn on the distance sensor 13, and record the distance from the distance sensor 13 to the initial position of the water drop sensor 5 through the computer in the control box 8;

[0070] S1. When the wind speed sensor 7 senses that the external wind speed is less than or equal to 2m / S, the test starts;

[0071] S2, start the water supply pipeline system 100, and when the inlet pressure of the fire hose 9 reaches the rated spraying pressure value, open the fire hose 9 to spray water;

[0072] S3, when the fire hose sprays stably, the control box 8 controls the motor 23 to start, driving the conveyor belt 24 to work, and the conveyor belt 24 drives the slider 4 to move slowly toward the direction of the spray water flow landing point, and the slider 4 moves from right to left;

[0073] S4. When the continuously scattered water flows touch the water drop sensor 5, the computer in the control box 8 can record the distance moved by the water drop sensor 5;

[0074] S5. When the water drop sensor 5 senses the water flow, the motor 23 drives the water drop sensor 5 to move back, and the water drop sensor 5 moves to the initial position after passing through the scraper 28. The scraper 28 can scrape off the water on the surface of the water drop sensor 5.

[0075] S6, repeat S4 and S5 ten times, and take the average value of the ten times as the final measurement result;

[0076] S7, completing the test of the spraying range of the fire hose 9, the spraying range of the fire hose 9 = the distance from the distance sensor 13 to the initial position of the water drop sensor 5 - the moving distance of the water drop sensor 5.

[0077] In the present invention, the clamping table 1, the slide rail group 2, the wind speed sensor 7, the water drop sensor 5, the slider 4 and the control box 8 are all separately arranged and can be moved. Through this design, a mobile fire hose 9 spray range test can be created, which not only greatly reduces the occupied space of the device of the present invention, but also can be used at any time, greatly improving flexibility.

[0078] The test results of the present invention on the spray range of the fire hose 9 are compared with the test results of the traditional test as shown in the following table:

[0079]

[0080] It can be seen that the range test results obtained by the present invention are more accurate than those obtained by traditional methods, especially when the test results are at the critical value of the standard requirements. It can more accurately judge whether the fire hose 9 test sample meets the standard requirements, which greatly improves the accuracy of the test results. It can also provide technical support for the inspection and testing of the range indicators of the fire hose 9 in the national standards, and standardize and lead the development of the industry.

[0081] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for testing the spray range of a fire hose, characterized in that: The following steps are involved: S1. When the wind speed sensor (7) senses that the external wind speed is less than or equal to 2m / S, the test starts; S2, starting the water supply pipeline system (100), and when the inlet pressure of the fire hose (9) reaches the rated spraying pressure value, opening the fire hose (9) to spray water; S3, when the fire hose sprays stably, the control box (8) controls the motor (23) to start, driving the conveyor belt (24) to work, and the conveyor belt (24) drives the slider (4) to move slowly in the direction of the falling point of the sprayed water flow; S4. When the continuously scattered water stream touches the water drop sensor (5), the computer in the control box (8) can record the distance moved by the water drop sensor (5); S5. When the water drop sensor (5) senses the water flow, the motor (23) drives the water drop sensor (5) to move back, and the water drop sensor (5) moves to the initial position after passing through the scraper (28). The scraper (28) can scrape off the water on the surface of the water drop sensor (5); S6, repeat S4 and S5 ten times, and take the average value of the ten times as the final measurement result; S7. Complete the spray range test of the fire hose (9).

2. A fire hose spray range test method according to claim 1, characterized in that: Before step S1, the method further includes: a. Component assembly: move the clamping table (1), the slide rail assembly (2), the wind speed sensor (7), the water drop sensor (5), the slider (4), the control box (8) and the test fire hose (9) to the outdoors; The fire-fighting water gun (9) is fixed in the water gun clamp (6), the control box (8) and the wind speed sensor (7) are arranged on the side of the slide rail group (2), and the fire-fighting water gun (9) is connected to the water supply pipeline system (100); The first slide rail (21) and the second slide rail (22) are unfolded and aligned at both ends, and then fixed by the first slide sleeve (3), at which time the conveyor belt (24) is flattened, and the conveyor belt (24) is tensioned by the first handle bolt (31); Inserting a slider (4) equipped with a water drop sensor (5) from one end of the first slide rail (21), moving the conveyor belt (24) so ​​that the insert (48) engages with the conveyor belt (24), and moving the slider (4) to an initial position so that the slider (4) equipped with the water drop sensor (5) is connected to the conveyor belt (24) of the slide rail assembly (2); The length of the slide rail assembly (2) is between 4m and 5m. According to the spray range standard of the corresponding model of fire hose gun, the rail assembly is placed at a suitable position in the spray direction of the fire hose gun (9); b. Position adjustment: Move the water gun clamp (6) up and down so that the height from the center of the outlet of the fire water gun (9) to the upper surface of the clamping platform (1) is 1 meter, and the water gun clamp (6) is tilted, and the angle between the water gun clamp (6) and the horizontal plane is 30°; Turn on the laser instrument (12), and adjust the position of the slide rail assembly (2) so that the laser line of the laser instrument (12) passes through the centering hole in the centering block (271) and is aligned with the center line of the first baffle (26) and the spray axis of the fire hose (9) respectively; The distance sensor (13) is turned on, and the distance from the distance sensor (13) to the initial position of the water drop sensor (5) is recorded by a computer in the control box (8).

3. A fire hose spray range test device, applied to a fire hose spray range test method as claimed in any one of claims 1 to 2, characterized in that: The invention comprises a movable clamping platform (1), a slide rail group (2), a water drop sensor (5), a control box (8) and a wind speed sensor (7); the clamping platform (1) can clamp a fire hose (9); the water drop sensor (5) is connected to the slide rail group (2) and can reciprocate along the length direction of the slide rail group (2); the clamping platform (1) and the slide rail group (2) are located on the same straight line; the control box (8) can control the movement of the water drop sensor (5); and the wind speed sensor (7) can sense wind speed.

4. A fire hose spray range test device according to claim 3, characterized in that: The clamping platform (1) comprises two support rods (11), a water gun clamp (6) is connected between the two support rods (11), the water gun clamp (6) can move up and down along the support rods (11), and the water gun clamp (6) can fix the fire-fighting water gun (9); A second sliding sleeve (61) is provided on both sides of the water gun clamp (6), the second sliding sleeve (61) is sleeved on the outside of the support rod (11), the second sliding sleeve (61) and the support rod (11) are fixed by a second handle bolt (62), the outer surface of the water gun clamp (6) is threadedly connected with a third handle bolt (63), and the fire-fighting water gun (9) and the water gun clamp (6) are fixed by the third handle bolt (63).

5. A fire hose spray range test device according to claim 3, characterized in that: The slide rail group (2) is connected to a support frame (27) near the clamping platform (1), a scraper (28) is fixed to the side of the support frame (27), and the lower part of the scraper (28) can abut against the upper part of the water drop sensor (5); A centering block (271) is provided on the upper part of the support frame (27), a first baffle (26) is provided on the end of the slide rail group (2) away from the clamping platform (1), and a laser instrument (12) is installed on the upper part of the clamping platform (1). The laser line of the laser instrument (12) can pass through the centering hole in the centering block (271) and be aligned with the center line of the first baffle (26) and the spray axis of the fire hose (9) respectively.

6. A fire hose spray range test device according to claim 3, characterized in that: A conveyor belt (24) is provided inside the slide rail group (2) along its length direction. The conveyor belt (24) is transmitted by a motor (23). A slider (4) is connected to the upper part of the conveyor belt (24). The water drop sensor (5) is fixed to the slider (4). The conveyor belt (24) can drive the slider (4) to move along the length direction of the slide rail group (2).

7. A fire hose spray range test device according to claim 6, characterized in that: The slider (4) comprises two guide plates (41), the slide rail assembly (2) comprises a guide groove (25), the guide plate (41) passes through the guide groove (25), an insert (48) is fixed between the two guide plates (41), a plurality of first teeth (241) are provided on the surface of the conveyor belt (24), a plurality of second teeth (481) are provided at the bottom of the insert (48), and the first teeth (241) are meshed with the second teeth (481).

8. A fire hose spray range test device according to claim 7, characterized in that: The inner wall of the guide plate (41) is provided with a first convex rib (42), the upper part of the insert block (48) is provided with a support rib (482), the support rib (482) abuts against the upper part of the first convex rib (42), the outer wall of the guide plate (41) is respectively provided with a second convex rib (43) and a connecting rib (44), the second convex rib (43) is located below the guide groove (25), the connecting rib (44) is located above the slide rail group (2), and a rotatable roller (45) is connected below the connecting rib (44), and the roller (45) abuts against the upper part of the slide rail group (2).

9. A fire-fighting water gun spray range test device according to claim 3, characterized in that: The slide rail assembly (2) comprises a first slide rail (21) and a second slide rail (22), wherein the first slide rail (21) and the second slide rail (22) are connected via a first slide sleeve (3); One end of the first slide rail (21) and the second slide rail (22) aligned therewith are respectively inserted into the first slide sleeve (3); first protrusions (211) are respectively provided on both sides of one end of the first slide rail (21); second protrusions (221) are respectively provided on both sides of one end of the second slide rail (22) close to the first slide rail (21); first handle bolts (31) are threadedly connected on both sides of the first slide sleeve (3); the first handle bolts (31) can be inserted between the first protrusion (211) and the second protrusion (221) located on the same side, so that the first slide rail (21) and the second slide rail (22) can expand outwards.

10. A fire-fighting water gun spray range test device according to claim 3, characterized in that: A water baffle (46) is provided on the side of the slide block (4), a second baffle (47) is provided below the water baffle (46), and a distance sensor (13) is installed on the side of the clamping platform (1), the distance sensor (13) is directly opposite to the second baffle (47).

Images