Method for detecting fire extinguishing performance of perfluorohexanone fire extinguishing device

Abstract

The invention discloses a method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device, and belongs to the technical field of fire fighting, and the method comprises the following steps: S1, assembling a plurality of groups of space models with openings and a totally-enclosed space model, the shapes of different groups of space models are different, the shapes of the same group of space models are the same, and in the same group, the shapes of the space models are different; the method comprises the following steps: S1, constructing a plurality of space models according to different positions, different sizes and different shapes of openings, S2, selecting a plurality of qualified perfluorohexanone fire extinguishing devices in the same batch, and respectively connecting the qualified perfluorohexanone fire extinguishing devices with the plurality of space models constructed in the S1, S3, preparing a plurality of same combustion units, and testing one by one, s4, analyzing the fire extinguishing performance of the perfluorohexanone fire extinguishing device according to the recorded fire extinguishing parameters after the test operation is completed under all the space model conditions, and the method has the beneficial effects that the change of the fire extinguishing performance of the perfluorohexanone liquid is effectively analyzed, and a certain expected effect evaluation and reference effect is achieved on related fire extinguishing treatment operation.

Description

Technical Field

[0001] The present invention relates to the field of fire fighting technology, in particular to a method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device. Background Art

[0002] Fire-fighting equipment is used for fire extinguishing, fire prevention and fire accidents; and the inspection of the fire extinguishing efficiency of fire extinguishers is the core technical indicator for measuring product quality. Therefore, after the fire extinguishers are produced, they need to use a detection system to test their fire extinguishing efficiency.

[0003] For example, Chinese patent CN117554019B discloses a performance testing device for heptafluoropropane fire extinguishers. Existing testing methods usually require comprehensive performance testing of heptafluoropropane fire extinguishers under high temperature conditions. Manual testing is inefficient and dangerous. The heptafluoropropane fire extinguisher performance testing device provided by this invention uses an auxiliary pressing unit, an impact buffer unit, and an impact unit that cooperates with a mobile fire source unit. It can adaptively clamp multiple heptafluoropropane fire extinguishers and play a buffering and resetting role. It can also simultaneously perform impact explosion tests, high-temperature explosion tests, spray time tests, and spray distance tests on multiple heptafluoropropane fire extinguishers, effectively improving detection efficiency. In addition, multiple tests are performed in a sealed cabinet to avoid the possible dangers of manual testing.

[0004] Another example is Chinese patent CN222364687U, which discloses a fire extinguisher effectiveness detection device. By using a cylinder to drive a pressure block to press the switch of the fire extinguisher body, the spray pressure of the fire extinguisher body can be detected. By adjusting the angle of the nozzle to aim at a simulated fire source, controlling the simulated fire source, and then pressing the switch of the fire extinguisher body, the time required for the fire extinguisher body to completely extinguish the flame can be recorded, thereby evaluating its fire extinguishing efficiency, avoiding interference from human factors, and ensuring the accuracy of the detection.

[0005] Perfluorohexanone, a highly effective fire extinguishing agent, has been widely used in various applications. Testing its fire extinguishing performance is crucial for ensuring public safety. Perfluorohexanone extinguishes fires by absorbing heat and cooling, and chemically inhibiting the combustion chain reaction. Its effectiveness relies on quickly reaching the designed concentration (typically 4% to 6% by volume) within the protected area. Insufficient concentration can lead to fire extinguishing failure, while delayed concentration allows the fire to spread. Gas fire extinguishing systems must release the gas quickly to extinguish initial fires and prevent them from spreading.

[0006] However, during the testing process, under different environmental conditions, including temperature, humidity, wind speed and other factors, the fire extinguishing performance of the perfluorohexanone fire extinguishing device will be affected. One of the factors is the sealing of the space environment. As we all know, perfluorohexanone fire extinguishing agent needs to reach a certain concentration in a very short time to quickly suppress the spread of flames. The sealing of the space affects the retention time of the fire extinguishing agent in the environment and the uniformity of its release. If the space sealing is good, the fire extinguishing agent can be evenly and fully diffused throughout the fire scene to form an effective fire extinguishing barrier. If the sealing is insufficient, the airflow rate between the space and the outside world is faster, and the fire extinguishing agent is prone to leakage or uneven distribution during the release process, resulting in the concentration of the fire extinguishing agent failing to meet the standard required for fire extinguishing, thereby affecting the fire extinguishing effect.

[0007] Prior art methods exist for testing fire extinguishing performance, such as Publication No. CN114993374A, a method for evaluating the fire extinguishing performance of fire detector tubes in live electrical control cabinets. This patent tests the fire extinguishing performance of electrical control cabinets. However, perfluorohexanone fire extinguishing devices are typically designed for equipment with different spaces and levels of sealing. Even if fire extinguishing performance data for one type of equipment is obtained, it cannot be adapted for other equipment. Therefore, it is urgent to obtain fire extinguishing data for spaces of varying shapes and sealing levels so that the closest data can be matched in actual firefighting, achieving better fire extinguishing results. Summary of the Invention

[0008] The technical problem to be solved by the present invention is: how to solve the problem that the current perfluorohexanone fire extinguishing device test device only tests the fire extinguishing performance of a certain type of equipment and cannot be adapted to other equipment with different sealing degrees, resulting in the inability to detect the fire extinguishing effect of the fire extinguishing device under different sealing equipment.

[0009] The present invention solves the above technical problems through the following technical means:

[0010] The fire extinguishing performance test method of perfluorohexanone fire extinguishing device includes:

[0011] S1: Assemble multiple groups of spatial models with open openings and a fully enclosed spatial model. The shapes of the spatial models in different groups are different, while the spatial models in the same group have the same shape. In the same group, multiple spatial models are constructed according to different opening positions, opening sizes, and opening shapes.

[0012] S2: Select multiple perfluorohexanone fire extinguishing devices of qualified quality from the same batch and connect them to the multiple spatial models constructed in S1 respectively;

[0013] S3: Prepare multiple identical combustion units and test them one by one;

[0014] S4: After completing the test operation under all spatial model conditions, the fire extinguishing performance of the perfluorohexanone fire extinguishing device is analyzed based on the recorded fire extinguishing parameters.

[0015] The present invention sets different spatial models. In the spatial models of the same group, only the position and size of the openings are different. During the detection process, other test conditions are kept consistent. The fire extinguishing performance of perfluoroacetone is tested one by one under the conditions of all spatial models, and fire extinguishing parameters such as the time from the start to the end of fire extinguishing are recorded. According to the fire extinguishing parameters, the change in the fire extinguishing performance of perfluoroacetone liquid in spaces with different openings and different opening positions is effectively analyzed, thereby playing a certain expected effect evaluation and reference role in related fire extinguishing treatment operations in actual fire extinguishing work.

[0016] Preferably, in S2, the nozzles on the perfluorohexanone fire extinguishing device pass through the positioning tubes on the space model and extend into the interior of the space model, and the extension length of each nozzle is the same.

[0017] Preferably, in S2, the positioning tubes on all spatial models are set at the same position, all perfluorohexanone fire extinguishing devices are placed at the same height and fixed with the same tools, the tools and opening and closing degrees used to open and close the fire extinguishing devices remain the same, and all test processes are carried out in the same environment.

[0018] Preferably, in S4, a control test in a fully open space is also required.

[0019] Preferably, prepare the same combustion unit as in S3 and the same batch of qualified perfluorohexanone fire extinguishing device as in S2, ignite the combustion unit, start the fire extinguishing device to extinguish the fire without a spatial model, and record the fire extinguishing parameters.

[0020] Preferably, the spatial model includes multiple keel rods, multiple covering panels, multiple corner locking plates, multiple support plates, and multiple cross plates. The multiple keel rods are spliced ​​into a frame structure, and the joints of the multiple keel rods are fixedly connected by corner locking plates. One of the surfaces of the frame structure serves as a surface with an open opening, and the remaining surfaces are encapsulated by covering panels. The support plates and cross plates are connected at the surface with an open opening, and an open opening is left.

[0021] Through the above method, the keel rods, covering panels, corner locking plates, support plates and cross plates can be assembled as needed into fully enclosed or semi-open space models with openings in various positions and sizes, realizing the detachability of all space models and the replaceability of each space model component, effectively improving the utilization rate of materials and the comprehensiveness of the detection process, and having high economic and practical benefits.

[0022] Preferably, a rectangular groove is provided on the inner side of the keel rod, and two ends of the plurality of support plates are respectively slidably connected to two ends of the frame structure, and two ends of the plurality of cross plates are respectively slidably connected to the other two sides of the frame structure;

[0023] The position of the opening is changed by adjusting the position of the support plates and the horizontal plates, and the size of the opening is changed by adjusting the number of the support plates and the horizontal plates.

[0024] Preferably, the cover panel includes a central panel, and a plurality of side panels and cloth strips are sequentially connected on both sides of the central panel. The side panels and cloth strips are arranged at intervals, and the entire cover panel is made of high-temperature heat-resistant material.

[0025] Preferably, a through hole is opened in the middle of the sealing panel, and a positioning tube is fixedly connected in the through hole. The positioning tube includes a flexible tube and a hard tube fixedly connected to each other to form a cylindrical structure. The hard tube is fixedly connected to the sealing panel, and the flexible tube is placed outside the space model. After the nozzle of the perfluorohexanone fire extinguishing device is inserted into the positioning tube, the flexible tube is bundled with the nozzle.

[0026] Preferably, the space model with an open opening is one or a combination of a rectangular space model, an L-shaped space model, a trapezoidal space model, a square space model, and an irregular space model.

[0027] The advantages of the present invention are:

[0028] The present invention sets different spatial models. In the spatial models of the same group, only the position and size of the openings are different. During the detection process, other test conditions are kept consistent. The fire extinguishing performance of perfluoroacetone is tested one by one under the conditions of all spatial models, and fire extinguishing parameters such as the time from the start to the end of fire extinguishing are recorded. According to the fire extinguishing parameters, the change in the fire extinguishing performance of perfluoroacetone liquid in spaces with different openings and different opening positions is effectively analyzed, thereby playing a certain expected effect evaluation and reference role in related fire extinguishing treatment operations in actual fire extinguishing work.

[0029] The keel rods, covering panels, corner locking plates, support plates and cross plates can be assembled as needed into fully enclosed or semi-open space models with openings in various positions and sizes, realizing the detachability of all space models and the replaceability of each space model component, effectively improving the utilization rate of materials and the comprehensiveness of the detection process, and having high economic and practical benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of the space model of Group A according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic structural diagram of the space model of group A11 according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the spatial model of an embodiment of the present invention. Figure 1 ;

[0033] Figure 4 This is a schematic diagram of a space model cover provided on a combustion unit according to an embodiment of the present invention;

[0034] Figure 5 is an exploded schematic diagram of a space model according to an embodiment of the present invention;

[0035] Figure 6 This is an exploded view of the corner of the rectangular frame of an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the connection at the corner of the rectangular frame of the embodiment of the present invention. Figure 1 ;

[0037] Figure 8 This is a schematic diagram of the connection at the corner of the rectangular frame of the embodiment of the present invention. Figure 2 ;

[0038] Figure 9 This is a schematic diagram of the interior of a corner of a rectangular frame according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the connection between the support plate and the horizontal plate according to an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of the spatial model of an embodiment of the present invention. Figure 2 ;

[0041] Figure 12 This is a schematic diagram of the structure of the spatial model of an embodiment of the present invention. Figure 3 ;

[0042] Figure 13 This is a schematic diagram of the structure of the spatial model of an embodiment of the present invention. Figure 4 ;

[0043] Figure 14 This is a schematic structural diagram of a cover panel according to an embodiment of the present invention;

[0044] Figure 15 This is a schematic diagram of the fire extinguishing performance test of the perfluorohexanone fire extinguishing device according to the embodiment of the present invention. Figure 1 ;

[0045] Figure 16 This is a working diagram of the fire extinguishing performance test of the perfluorohexanone fire extinguishing device according to the embodiment of the present invention. Figure 2 ;

[0046] Figure 17 This is a schematic diagram of the structure of another spatial model according to an embodiment of the present invention. Figure 1 ;

[0047] Figure 18 This is a schematic diagram of the structure of another spatial model according to an embodiment of the present invention. Figure 2 ;

[0048] Figure 19 It is a flow chart of a method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to an embodiment of the present invention.

[0049] Numbers in the figure:

[0050] 1. Keel rod; 11. Rectangular groove; 12. First screw hole; 13. Second screw hole; 2. Covering panel; 21. Center panel; 22. Side panel; 23. Cloth strip; 24. Positioning tube; 241. Flexible tube; 242. Hard tube; 3. Angle locking piece; 31. First bolt; 4. Support plate; 5. Horizontal plate; 51. Second bolt; 6. Combustion unit; 7. Perfluorohexanone fire extinguishing device; 71. Nozzle; 8. Binding rope. DETAILED DESCRIPTION

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0052] Example 1:

[0053] like Figures 1 to 19 As shown, the fire extinguishing performance testing method of the perfluorohexanone fire extinguishing device includes the following steps:

[0054] S1: Assemble multiple groups of spatial models with open openings and a fully enclosed spatial model. The shapes of spatial models with open openings in different groups are different. Multiple spatial models in the same group have the same shape. In the same group, multiple spatial models are constructed according to different open opening positions, open opening sizes, and open opening shapes.

[0055] For example, in this embodiment, there are a group A space model with an open mouth, a group B space model with an open mouth, and a fully enclosed group C space model. The main difference between the group A space model and the group B space model is the shape. For example, the group A space model is a rectangular space model, while the group B space model is an L-shaped space model (combined with Figure 17 and Figure 18 shown).

[0056] like Figure 1As shown, the space models in group A include multiple size change groups (such as A1 size change group, A2 size change group, A3 size change group...). The space models in the same size change group have the same size, such as the space models in the A1 size change group are all rectangular space models of 3m*2m*2m; the sizes of the multiple size change groups increase proportionally in sequence, such as the space models in the A2 size change group are all rectangular space models of 4.5m*4m*4m, the space models in the A3 size change group are all rectangular space models of 6m*4m*4m, and so on.

[0057] Each size change group includes multiple open mouth position change groups (such as A11 open mouth position change group, A12 open mouth position change group, and A13 open mouth position change group). The open mouth positions of the spatial models within the same A11 open mouth position change group are the same, such as the open mouth positions of the spatial modules within the A11 open mouth position change group are all on the top surface; the open mouth positions of multiple open mouth position change groups are different, such as the open mouth position of the A11 open mouth position change group is on the top surface, the open mouth position of the A12 open mouth position change group is on the side, and the open mouth position of the A13 open mouth position change group is on the other side.

[0058] Each opening position change group includes space modules with different opening sizes, such as Figure 2 As shown, for example, in A11, the open openings are all located on the top surface, the open opening area of ​​A111 is 1m*1m, the open opening area of ​​A111 is 1.5m*1.5m... and so on. The size of the open opening area is not limited here, and multiple areas can be set in an ascending relationship.

[0059] This embodiment is not limited to the above grouping method, and can also be grouped in other ways, as long as it can cover multiple shapes of spatial models, multiple groups of opening positions, multiple opening sizes, and multiple opening shapes, and build as many case databases as possible.

[0060] S2: Select multiple perfluorohexanone fire extinguishing devices 7 of qualified quality from the same batch, and connect them to the multiple space models constructed in S1 respectively.

[0061] Specifically, such as Figure 14 and Figure 15 As shown, the nozzle 71 on the perfluorohexanone fire extinguishing device 7 passes through the positioning tube 24 on the space model and extends into the interior of the space model. The length of each nozzle 71 extending into the space model is the same, and the nozzle 71 and the positioning tube 24 are as tightly connected as possible.

[0062] S3: prepare multiple identical combustion units 6 and test them one by one;

[0063] The test operation includes: igniting the combustion unit 6, covering the space model on the outside of the combustion unit 6, and then starting the corresponding perfluorohexanone fire extinguishing device 7 to extinguish the combustion unit 6. After the combustion unit 6 is completely extinguished, the fire extinguishing device is turned off, and the time from starting to closing the fire extinguishing device is recorded.

[0064] The positioning tubes 24 on all spatial models are set at the same position, all perfluorohexanone fire extinguishing devices 7 are placed at the same height (such as on a flat ground) and are fixed with the same tools. The tools and opening and closing degrees used to open and close the fire extinguishing devices remain the same, and all test processes are carried out in the same environment.

[0065] The combustion unit 6 adopts the existing technology, which includes an ignition basin and flammable materials placed inside the ignition basin. When extinguishing a fire, the fire intensity of each combustion unit 6 tends to be consistent. Of course, other conditions not mentioned above are also kept consistent. This can effectively ensure the existence of a single variable during the test process and effectively improve the accuracy of the test.

[0066] S4: After completing the test operations under all spatial model conditions, based on the recorded fire extinguishing data such as time, effectively analyze the changes in the fire extinguishing performance of perfluorohexanone liquid in spaces with different openings and different opening positions, so as to conduct a preliminary and effective evaluation of the fire extinguishing effect of perfluorohexanone in actual fire extinguishing work.

[0067] In step S4, before analyzing the time data, a control test is conducted in a fully open space. The specific operations include the following: preparing the same combustion unit 6 as in S3 and the qualified perfluorohexanone fire extinguishing device 7 from the same batch as in S2, igniting the combustion unit 6, and starting the fire extinguishing device to extinguish the fire without a spatial model, and the injection position of the nozzle 71 is consistent with that in S3. After the combustion unit 6 is completely extinguished, the fire extinguishing device is turned off, and the time from the start to the shutdown of the fire extinguishing device is recorded. The time data results of this control test are combined with step S4 for unified analysis, and different fire extinguishing efficiency conditions with and without spatial models can be further obtained.

[0068] Fire extinguishing data may include data such as fire extinguishing time and the capacity of the fire extinguishing device.

[0069] Example 2:

[0070] Based on the detection method of the above embodiment 1, it is necessary to make multiple space models. This embodiment provides a space model. Figure 3 As shown, the space model is rectangular.

[0071] like Figure 5As shown, the spatial model comprises multiple keel rods 1 and multiple corner locking plates 3. Depending on the shape and size of the desired spatial model, multiple keel rods 1 of varying lengths are prepared. In this embodiment, four keel rods 1 are provided in the length direction, four in the width direction, and four in the height direction. Twelve keel rods 1 are connected to form a rectangular frame structure. The corner locking plates 3 are bolted to the corners of the rectangular frame. The corner locking plates 3 are L-shaped. All keel rods 1 have the same width and thickness, so when assembling the spatial model, only the length of the keel rods 1 needs to be selected.

[0072] like Figure 3 As shown, on the above-mentioned rectangular frame structure, except for one side as the surface where the open opening is located, the rest of the surfaces are sealed by the sealing panel 2; and the surface where the open opening is located is connected to multiple support plates 4 and multiple cross plates 5, multiple support plates 4 are connected to the rectangular frame, and multiple cross plates 5 are arranged on the side of the support plate close to the outside world, sealing part of the surface where the open opening is located, leaving an open opening 16; this embodiment can form open openings 16 of different positions and sizes on the surface where the open opening is located by adjusting the number and position of the support plates 4 and the cross plates 5, and the support plates 4 and the cross plates 5 are slidably connected to the rectangular frame, which is convenient for adjusting the installation quantity and position.

[0073] It should be noted that since the bottom surface of the rectangular frame is usually placed on the ground or other safe and flat surface, and during use, the rectangular frame cover needs to be placed outside the combustion unit 6, the bottom surface can be empty and the covering panel 2, support plate 4 and cross plate 5 are not installed.

[0074] The keel rod 1, the covering panel 2, the support plate 4 and the cross plate 5 are all made of heat-resistant and flame-retardant materials, such as metal composite panels, cement boards, etc. Those skilled in the art can make the best choice according to their needs. Sufficient distance needs to be reserved between the rectangular frame structure and the combustion unit 6, and the flame of the combustion unit 6 does not touch the surface of the space model.

[0075] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, a first screw hole 12 is provided at the end of the keel rod 1 along the length direction, and a second screw hole 13 is provided at the side end opposite to the rectangular groove 11. The three keel rods 1 located at the same corner are vertically connected to each other, and the end angles of the three keel rods 1 cooperate with each other to form a three-dimensional coordinate structure; the first screw hole 12 on one of the keel rods 1 is exposed to the outside, and three through holes are provided on the corner locking piece 3. When the three keel rods 1 are connected through the corner locking piece 3, one of the first bolts 31 is screwed into the first screw hole 12 through the through hole, and the other two first bolts 31 are screwed into the other two second screw holes 13 through the through holes, respectively, to achieve the connection and fixation of the ends of the three keel rods 1.

[0076] The keel rod 1 has a rectangular cross section as a whole, and its inner side is provided with a rectangular groove 11, which is convenient for the later installation of the cover plate 2, the support plate 4 or the cross plate 5; Figure 9 、 Figure 10 As shown, both ends of the support plate 4 can slide along the rectangular groove 11 , and both ends of the cross plate 5 can slide along the rectangular groove 11 , so as to facilitate changing the position of the opening 16 .

[0077] The support plate 4 and the cross plate 5 are vertically distributed in the inner and outer layers, and the two have the same thickness. Preferably, the width of the slot of the rectangular groove 11 is twice the thickness of the support plate 4. There are many models of the length and width of the support plate 4 and the cross plate 5. The support plate 4 is installed between a pair of parallel keel rods 1, and the cross plate 5 is installed between another pair of parallel keel rods 1. The lengths of the two are close to the distance between the pair of rectangular slots 11 where the two are located; during installation, first select a plurality of support plates 4 of appropriate length and insert them parallel to the rectangular slots 11 on a pair of keel rods 1. Note: the position where the open opening is required is not provided with the support plate 4, and then select a plurality of cross plates 5 of appropriate length and insert them parallel to the rectangular slots 11 on the other pair of keel rods 1. The position where the open opening is required is also not provided with the cross plate 5. Through the cooperation of the support plate 4 and the cross plate 5, an open opening of the required size is formed at a specific position. In addition, in order to facilitate the precise setting of the size of the open opening, the surface where the open opening is located can be assembled in combination with support plates 4 and cross plates 5 of different widths.

[0078] It should be noted that: before the support plate 4 and the cross plate 5 are assembled, the multiple keel rods 1 connected to them are not fixed with the angle locking plates 3. This makes it convenient to insert the support plate 4 and the cross plate 5 between a pair of keel rods 1. After the required support plates 4 and cross plates 5 are installed between the corresponding keel rods 1, the end angle position of the keel rod 1 is fixed by the angle locking plates 3.

[0079] like Figure 11 、 Figure 12 As shown, by installing in the above-mentioned installation manner, the position and size of the opening 16 can be changed by changing the number and position of the support plates 4 and the transverse plates 5 .

[0080] It should be noted that the above description is based on the open opening 16 located on the top surface. At this time, since the support plate 4 and the cross plate 5 do not move downward due to gravity, there is no need to perform additional fixing operations on the two. In the absence of external force, the two can remain stable by relying on the friction between themselves and the rectangular groove 11. When the open opening 16 is set on a side of the frame structure, such as Figure 13As shown, due to the weight of the cross plate 5, it is easy to slide down. Therefore, after determining the position of the cross plate 5, the second bolt 51 is used to further fix the lowest cross plate 5 above the open opening. The specific operation is as follows: After determining the position of the lowest cross plate 5 above the open opening, first manually fix the cross plate 5, and then use a drilling tool to drill from the outer end of the keel rod 1 inward to create a mounting hole 1 on the inner wall of the rectangular groove 11 that communicates with the outside world, and a mounting hole 2 is created on the cross plate 5. Then, the second bolt 51 is screwed into the inside of the mounting hole 1 and the mounting hole 2 to fix the position of the lowest cross plate 5 above the open opening on the keel rod 1.

[0081] Through the above method, the keel rod 1, the covering panel 2, the corner locking plate 3, the support plate 4 and the cross plate 5 can be assembled as needed into a fully enclosed or semi-open space model with openings of various positions and sizes, thereby realizing the detachability of all space models and the replaceability of each space model component, effectively improving the utilization rate of materials and the comprehensiveness of the detection process, and having high economic and practical benefits.

[0082] Example 3:

[0083] like Figure 14 As shown, this embodiment is based on the embodiment 1, and the sealing panel 2 includes a central panel 21, and both sides of the central panel 21 are connected to multiple side panels 22 and multiple cloth strips 23. The number of side panels 22 and cloth strips 23 is the same and they are distributed at intervals. The central panel 21, side panels 22 and cloth strips 23 are adjacent to each other and fixedly connected. The central panel 21 and side panels 22 are also made of heat-resistant and flame-retardant materials, and the cloth strips 23 are made of high-temperature resistant fireproof cloth. The width of the central panel 21 and the side panels 22 is the same, and the width of the two is 0.5 times the width of the rectangular groove 11. The sealing panel 2 is directly installed on the end face of the frame structure where no open mouth is set. During installation, the center panel 21 and the side panels 22 are inserted between the same pair of rectangular grooves 11, and the ends of the center panel 21 and the side panels 22 are against the inner bottom surface of the rectangular groove 11 (that is, the length of a single center panel 21 and a single side panel 22 is close to the spacing between a pair of rectangular grooves 11), and then they are unfolded horizontally so that the pair of side panels 22 at the edge are respectively inserted into the inside of another pair of rectangular grooves 11, thereby fully sealing the rectangular frame surface composed of the four keel rods 1, and through the flexible cloth strips 23, the horizontal width of the entire covering panel 2 can be adjusted within a certain range, thereby improving the applicability of the covering panel 2.

[0084] like Figure 14 and Figure 15 As shown in the same space model, a positioning tube 24 is fixedly connected to one of the center plates 21. The positioning tube 24 includes a flexible tube 241 and a hard tube 242 fixedly connected to each other to form a cylindrical structure. The hard tube 242 passes through the center plate 21 and is fixedly connected to the inside thereof. Figure 15 and Figure 16 As shown, in step S2, after the upper nozzle 71 of the perfluorohexanone fire extinguishing device 7 is inserted into the positioning tube 24, the flexible tube 241 and the nozzle 71 are bundled together with a binding rope 8. The inner diameter of the positioning tube 24 needs to be larger than the size of the upper nozzle 71 of the perfluorohexanone fire extinguishing device 7, so that the nozzle 71 can be easily inserted therein. After the nozzle 71 is installed, the binding operation of the binding rope 8 effectively closes the gap between the flexible tube 241 and the nozzle 71, so that the sprayed perfluorohexanone is not easily dissipated and lost through the positioning tube 24, thereby further improving the accuracy of detection.

[0085] Supplementary explanation: In this embodiment, one of the cover panels 2 is provided with a mounting positioning tube 24 , while the center panels 21 of the remaining cover panels 2 are not provided with positioning tubes 24 .

[0086] Example 4:

[0087] like Figure 17 、 Figure 18 As shown, the difference between this embodiment and the first embodiment is that the shape of the space model of group B in this embodiment is an L-shaped frame structure ( Figure 17 and Figure 18 The structures such as the cover plate 2, the support plate 4 and the cross plate 5 are not shown).

[0088] Similarly, openings of different positions and sizes were set on the L-shaped space model. After the same testing operation, the changes in the fire extinguishing performance of perfluorohexanone liquid under the L-shaped frame structure with different openings and different opening positions were obtained.

[0089] When assembling a space model of a non-cuboid frame structure, some corner lock pieces 3 may need to be installed on the lower end surface of the frame (such as Figure 18 As shown), the end angle position of the keel rod 1 is fixed; when such a space model is used for testing, the optimal operation is: a pad made of heat-resistant and flame-retardant material is placed on the lower end plane of the space model, and according to the number and position of the corner locking pieces 3 at the lower end of the space model, corresponding placement holes are reserved on the plate, and then the combustion unit 6 and the space model are placed on the pad, and the corner locking pieces 3 at the lower end of the space model are placed in the placement holes respectively, so that the keel rod 1 at the lower end can fit with the surface of the pad, and the two are not likely to produce gaps for gas flow, thereby improving the detection accuracy.

[0090] Similarly, structures such as the keel rod 1, the covering panel 2, the corner locking piece 3, the support plate 4 and the cross plate 5 can be assembled into spatial models of other shapes, and the fire extinguishing performance data of the perfluorohexanone liquid in several shapes of space can be obtained through the detection process. In this way, in actual application, a more accurate evaluation can be made based on the overall spatial structure and the degree of closure of the fire area, so that the evaluation data can serve as a more accurate reference for the relevant fire extinguishing treatment in the fire area.

[0091] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for testing the fire extinguishing performance of a perfluorohexanone fire extinguishing device, characterized in that: include: S1: Assemble multiple groups of spatial models with open openings and a fully enclosed spatial model. The shapes of the spatial models in different groups are different, while the spatial models in the same group have the same shape. In the same group, multiple spatial models are constructed according to different positions, sizes, and shapes of the open openings. S2: Select multiple perfluorohexanone fire extinguishing devices (7) of qualified quality from the same batch and connect them to the multiple spatial models constructed in S1 respectively; S3: prepare multiple identical combustion units (6) and test them one by one; S4: After completing the test operation under all spatial model conditions, the fire extinguishing performance of the perfluorohexanone fire extinguishing device (7) is analyzed based on the recorded fire extinguishing parameters.

2. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 1, wherein: In S2, the nozzle (71) on the perfluorohexanone fire extinguishing device (7) passes through the positioning tube (24) on the space model and extends into the interior of the space model, and the extension length of each nozzle (71) is the same.

3. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 2, wherein: In S2, the positioning tubes (24) on all spatial models are set at the same position, all perfluorohexanone fire extinguishing devices (7) are placed at the same height and fixed with the same tools, the tools used to open and close the fire extinguishing devices and the degree of opening and closing remain the same, and all test processes are carried out in the same environment.

4. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 1, wherein: In S4, a control experiment was also conducted in a fully open space.

5. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 4, characterized in that: The control test includes: preparing a combustion unit (6) identical to that in S3 and a perfluorohexanone fire extinguishing device (7) of the same batch as that in S2, igniting the combustion unit (6), activating the fire extinguishing device to extinguish the fire without a spatial model, and recording the fire extinguishing parameters.

6. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 1, wherein: The spatial model comprises a plurality of keel rods (1), a plurality of cover panels (2), a plurality of corner locking pieces (3), a plurality of support plates (4), and a plurality of transverse plates (5). The plurality of keel rods (1) are spliced ​​together to form a frame structure. The spliced ​​portions of the plurality of keel rods (1) are fixedly connected by the corner locking pieces (3). One of the faces of the frame structure serves as a face with an open opening, and the remaining faces are encapsulated by the cover panels (2). The support plates (4) and the transverse plates (5) are connected to the face with the open opening, and the open opening is left.

7. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 6, wherein: A rectangular groove (11) is provided on the inner side of the keel rod (1), two ends of the plurality of support plates (4) are respectively slidably connected to two ends of the frame structure, and two ends of the plurality of cross plates (5) are respectively slidably connected to the other two sides of the frame structure; The position of the opening is changed by adjusting the positions of the support plates (4) and the transverse plates (5), and the size of the opening is changed by adjusting the number of the support plates (4) and the transverse plates (5).

8. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 6, wherein: The cover panel (2) comprises a central panel (21), and a plurality of side panels (22) and cloth strips (23) are sequentially connected to both sides of the central panel (21). The side panels (22) and the cloth strips (23) are arranged at intervals, and the entire cover panel (2) is made of high-temperature heat-resistant material.

9. The method for detecting the fire extinguishing performance of a perfluorohexanone fire extinguishing device according to claim 6, wherein: A through hole is provided in the middle of the sealing panel (2), and a positioning tube (24) is fixedly connected in the through hole. The positioning tube (24) comprises a flexible tube (241) and a hard tube (242) fixedly connected to each other to form a cylindrical structure. The hard tube (242) is fixedly connected to the sealing panel (2). The flexible tube (241) is placed outside the space model. After the nozzle (71) of the perfluorohexanone fire extinguishing device (7) is inserted into the positioning tube (24), the flexible tube (241) and the nozzle (71) are bundled.

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