Multi-phase medium long-range fire monitor, method of firefighting and method of use

Abstract

This invention belongs to the field of fire protection technology, specifically relating to a multiphase medium long-range fire monitor, fire protection method, and usage method. The multiphase medium long-range fire monitor includes: an outer cylinder; a flow guide coaxially disposed within the outer cylinder, forming an annular channel between the flow guide and the outer cylinder allowing a first medium to pass through; and a delivery pipe for conveying a second medium. The flow guide is constructed as a hollow structure, and the delivery pipe communicates with the flow guide, thereby causing the second medium to be ejected from within the flow guide.

Description

Technical Field

[0001] This invention belongs to the field of fire protection technology, specifically relating to a multiphase medium long-range fire monitor, a multiphase medium long-range fire protection method, and a method of using a multiphase medium long-range fire monitor. Background Technology

[0002] The media used in the petrochemical industry are often flammable and explosive, leading to frequent fire accidents.

[0003] The petrochemical industry produces media with high calorific value and fast combustion speed, resulting in high heat release rate and surrounding heat radiation. This requires fire monitors to have both fire extinguishing and cooling protection functions.

[0004] Currently, conventional deflector-type fire monitors have two working modes: liquid jet and spray cooling. However, the extinguishing medium sprayed by this type of fire monitor can only be water or foam liquid. Foam liquid can play a role in extinguishing fire by insulating oxygen and cooling, but it is not as good as dry powder extinguishing agent in quickly controlling combustion. Therefore, it is necessary to develop fire monitors that can spray liquid and dry powder in a coordinated manner.

[0005] Conventional deflector fire monitors cannot spray dry powder. How to enable fire monitors to spray both dry powder and liquid phases simultaneously, and to achieve a longer spray range, is a technical problem that urgently needs to be solved.

[0006] Therefore, it is necessary to comprehensively consider the structure of the diversion fire monitor and develop a fire monitor that can have both direct current and spray functions, and can spray liquid phase and dry powder alone or in combination. Summary of the Invention

[0007] In view of the technical problems mentioned above, the present invention aims to provide a multiphase medium long-range fire monitor, which can solve at least one of the above technical problems.

[0008] The present invention also proposes a multiphase medium long-distance fire fighting method, which can simultaneously spray dry powder and liquid phase and has a long spray range.

[0009] This invention also proposes a method for using a multiphase medium long-range fire monitor in petrochemical fires.

[0010] According to the present invention, a multiphase medium long-range fire monitor is provided, comprising: an outer cylinder; a flow guide coaxially disposed within the outer cylinder, wherein the flow guide and the outer cylinder form an annular channel allowing a first medium to pass through; and a delivery pipe for conveying a second medium, wherein the flow guide is constructed as a hollow structure, and the delivery pipe is connected to the flow guide, thereby causing the second medium to be ejected from within the flow guide.

[0011] In one specific embodiment, the guide is configured to allow the first and second media to converge toward the central axis of the outer cylinder after being ejected, and to converge at the same position.

[0012] In one specific embodiment, the outer cylinder includes an expansion section and a direct current section coaxially disposed on the expansion section. The expansion section is configured with an inner diameter that gradually increases from back to front. The flow guide includes a flow guide disk, the axial rear end of which is disposed within the axial length range of the expansion section.

[0013] In one specific embodiment, the outer wall of the guide plate is constructed in a shape where the outer diameter gradually decreases from back to front, and a conveying channel communicating with the conveying pipe is provided inside the guide plate. The conveying channel is constructed to allow the second medium to be sprayed toward the confluence of the first medium.

[0014] In one specific embodiment, the conveying channel is constructed as an annular shape with a diameter that gradually decreases from back to front, and is coaxially disposed within the guide plate.

[0015] In one specific embodiment, the flow guide further includes a flow guide core coaxially disposed at the rear end of the flow guide disk, the outer diameter of the flow guide core being smaller than the outer diameter of the flow guide disk, and a rectifier coaxially disposed inside the outer cylinder, the flow guide core being coaxially connected to the rectifier.

[0016] In one specific embodiment, a conveying cavity communicating with the conveying channel is provided in the rear end of the guide plate, and the conveying pipe passes coaxially through the rectifier and the guide core in sequence and communicates with the conveying cavity.

[0017] In one specific embodiment, the outer cylinder includes a bend section, and the delivery pipe enters the outer cylinder from the bend section.

[0018] In one specific embodiment, the outer cylinder further includes a throat coaxially disposed at the rear end of the expansion section, a contraction section coaxially disposed at the rear end of the throat, the contraction section being constructed with an inner diameter that gradually decreases from back to front, and a water inlet section coaxially disposed at the rear end of the contraction section.

[0019] In one specific embodiment, the DC segment is connected to the expansion segment via a telescopic mechanism, the telescopic mechanism being configured to allow the DC segment to move axially relative to the expansion segment.

[0020] In one specific embodiment, the telescopic mechanism includes: a support section arranged axially, the DC section being movably connected to the support section; a driver disposed on the support section; and a telescopic rod, the driver being connected to the DC section via the telescopic rod, thereby driving the DC section to move coaxially relative to the expansion section.

[0021] In one specific embodiment, a rectifier cone is coaxially disposed at the front end of the flow guide.

[0022] In one specific embodiment, the rectifier cone is configured to have a shape in which the outer diameter gradually decreases from back to front.

[0023] According to the present invention, a multiphase medium long-distance fire fighting method is also provided, which uses the multiphase medium long-distance fire monitor provided by the present invention to deliver liquid phase into the outer cylinder from the rear end and dry powder into the outer cylinder from the rear end of the delivery pipe, so that the liquid phase and dry powder are sprayed out from the front end of the multiphase medium long-distance fire monitor and converge at the same position, so that the dry powder jet is carried forward by the liquid phase jet.

[0024] According to the present invention, a method for using a multiphase medium long-range fire monitor is provided for use in petrochemical fires.

[0025] Compared with the prior art, the advantages of this application are as follows.

[0026] This invention controls the dry powder to be ejected from the internal conveying channel of the guide plate, allowing the dry powder to converge at the initial convergence point of the liquid phase jets. This reduces the impact and diffusion effect of the dry powder jets on the liquid phase jets, thereby increasing the range. If several powder jets converge, the dry powder jets will gradually diffuse during their movement, increasing their radial area and thus increasing their impact on the liquid phase jets when passing through the convergence zone. If several powder jets converge with a delay, the dry powder jets will affect the convergence of the liquid phase jets, and the inability of the liquid phase jets to converge effectively will significantly affect the range and the entrainment effect on the dry powder.

[0027] The present invention configures the conveying pipe for conveying dry powder to enter from the bend section of the outer cylinder, thereby reducing the impact of the conveying pipe on the uniformity of the flow field inside the outer cylinder.

[0028] This invention breaks down the vortex generated in front of the guide plate by setting a flow-rectifying cone, reducing the influence of the vortex on the dry powder jet, improving the spray concentration and accuracy of the dry powder jet, and enabling the dry powder jet to more accurately converge with the liquid jet at the same position, thereby increasing the range. Attached Figure Description

[0029] The present invention will now be described with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of an embodiment of a multiphase medium long-range fire monitor according to the present invention;

[0031] Figure 2 This is a schematic diagram of the fluid state during the long-distance spraying of a multiphase medium fire monitor.

[0032] The reference numerals in the figure are as follows:

[0033] 1. Outer cylinder; 11. Expansion section; 12. Direct flow section; 13. Bend section; 14. Throat; 15. Contraction section; 16. Inlet section;

[0034] 2. Flow guide; 21. Flow guide plate; 22. Flow guide core; 23. Conveying channel; 24. Conveying chamber;

[0035] 3. Circular channel;

[0036] 4. Conveying pipe;

[0037] 5. Rectifier;

[0038] 6. Telescopic mechanism; 61. Support section; 62. Driver; 63. Telescopic rod;

[0039] 7. Rectifier cone;

[0040] 100. Multiphase medium long-range fire monitor; 101. Liquid phase jet; 102. Dry powder jet; 103. Confluence point.

[0041] In this application, all drawings are schematic and are used only to illustrate the principles of the invention, and are not drawn to scale. Detailed Implementation

[0042] The invention will now be described with reference to the accompanying drawings.

[0043] It should be noted that in this application, the direction of the medium sprayed by the multiphase medium long-range fire monitor according to the present invention is described as "rear end", "rear" or similar terms, that is... Figure 1 The left side. The destination of the medium sprayed by a multiphase medium long-range fire monitor is described as "front end," "forward," or similar terms, i.e. Figure 1 On the right side.

[0044] Figure 1 The structure of a multiphase medium long-range fire monitor 100 according to the present invention is shown. For example... Figure 1 As shown, the multiphase medium long-range fire monitor 100 mainly includes an outer cylinder 1, a flow guide 2, and a delivery pipe 4.

[0045] In this embodiment, the outer cylinder 1 is constructed in a generally cylindrical shape. The flow guide 2 is coaxially fixed inside the outer cylinder 1, and there is a gap between the outer wall of the flow guide 2 and the inner wall of the outer cylinder 1, thereby forming an annular channel 3 between the flow guide 2 and the outer cylinder 1 that allows the first medium to pass through.

[0046] In one embodiment, the first medium is a liquid phase, specifically water or foam liquid in this embodiment. When using the multiphase medium long-range fire monitor 100, the liquid phase is transported from the rear end of the outer cylinder 1 into the outer cylinder 1, so that the liquid phase flows from back to front along the outer cylinder 1, and finally sprays out of the multiphase medium long-range fire monitor 100 through the annular channel 3 between the guide member 2 and the outer cylinder 1.

[0047] The delivery pipe 4 is used to deliver the second medium. The guide member 2 is a hollow structure. The delivery pipe 4 is located behind the guide member 2 and is connected to the guide member 2. After the medium enters the delivery pipe 4 from the rear end, it can be delivered forward along the delivery pipe 4 and finally sprayed out from the front end of the guide member 2.

[0048] In one embodiment, the second medium is dry powder, specifically a powdered extinguishing agent commonly used in the fire protection field, which is well known to those skilled in the art. When using the multiphase medium long-range fire monitor 100, the dry powder is transported into the conveying pipe 4 from the rear end of the conveying pipe 4 by a high-pressure airflow, causing the dry powder to flow from back to front along the conveying pipe 4, and finally sprayed out of the multiphase medium long-range fire monitor 100 through the inner cavity of the guide member 2.

[0049] According to the present invention, when using the multiphase medium long-range fire monitor 100, the first medium and the second medium can be sprayed separately, or the first medium and the second medium can be sprayed simultaneously.

[0050] According to a preferred embodiment of the present invention, the guide member 2 is configured to allow the first medium and the second medium to converge toward the central axis of the outer cylinder 1 after being ejected, and to converge at the same position.

[0051] like Figure 2 As shown, in this embodiment, the first medium is a liquid phase. The liquid phase is ejected from the front end of the multiphase medium long-range fire monitor 100 to form a liquid jet 101, which converges towards the central axis of the multiphase medium long-range fire monitor 100. The second medium is dry powder. The dry powder is ejected from the front end of the multiphase medium long-range fire monitor 100 to form a dry powder jet 102, which converges towards the central axis of the multiphase medium long-range fire monitor 100. Both the liquid jet 101 and the dry powder jet 102 converge at the intersection point 103.

[0052] In this configuration, both the liquid jet 101 and the dry powder jet 102 converge at the junction 103, which reduces the impact and diffusion effect of the dry powder jet 102 on the liquid jet 101, thereby enabling the multiphase medium long-range fire monitor 100 to have a higher range. If several powder jets 102 converge, the dry powder jets 102 will gradually diffuse during their movement, increasing their radial area, thus affecting the liquid jet 101 when passing through it and reducing its range. If several powder jets 102 converge with a delay, the dry powder jets 102 will affect the convergence of the liquid jets 101, preventing the liquid jets 101 from converging effectively, greatly affecting the range and the entrainment effect on the dry powder.

[0053] In a specific embodiment, such as Figure 1 As shown, the outer cylinder 1 includes an expansion section 11 and a direct current section 12 coaxially disposed on the expansion section 11. The expansion section 11 is constructed as a cone shape with its inner diameter gradually increasing from back to front, while the direct current section 12 is constructed as a cylinder with a constant diameter. The flow guide 2 includes a flow guide disk 21, the axial rear end of which is disposed within the axial length of the expansion section 11; that is, the axial rear end of the flow guide disk 21 is adapted to the inner wall of the expansion section 11 to form an annular channel 3. The direct current section 12 is configured to be coaxially movable relative to the expansion section 11.

[0054] In this configuration, the injection angle of the liquid jet 101 can be adjusted by regulating the axial position of the DC section 12 relative to the expansion section 11. Specifically, when the DC section 12 is positioned relative to the expansion section 11 towards... Figure 1 After the left side (rear end) of the expansion section 11 moves, the liquid phase is scattered along the inner wall of the expansion section 11 through the annular channel 3, causing the liquid phase to spray out in a flower-like pattern. When the direct current section 12 moves relative to the expansion section 11 towards... Figure 1 After the right side (front end) moves, the liquid phase is scattered along the inner wall of the expansion section 11 through the annular channel 3. When the liquid phase comes into contact with the direct current section 12, the direct current section changes the flow direction of the liquid phase, causing the liquid phase to spray to the right, or even converge towards the central axis of the multiphase medium long-range fire monitor 100. By changing the axial position of the direct current section 12 relative to the expansion section 11, the liquid jet 101 can be adjusted from the scattering angle (spraying out in a flower shape) to the confluence angle (converging towards the central axis of the multiphase medium long-range fire monitor 100).

[0055] When dry powder and liquid are sprayed simultaneously, the axial position of the DC section 12 relative to the expansion section 11 is adjusted so that the liquid jet 101 and the dry powder jet 102 both converge at the intersection 103.

[0056] According to a specific embodiment of the present invention, the DC section 12 is connected to the expansion section 11 via a telescopic mechanism 6, the telescopic mechanism 6 being configured to allow the DC section 12 to move axially relative to the expansion section 11.

[0057] In this embodiment, the telescopic mechanism 6 includes a support section 61, a driver 62, and a telescopic rod 63. The support section 61 is axially disposed at the edge of the maximum outer diameter of the expansion section 11. The DC section 12 is movably connected to the support section 61, meaning that the DC section 12 can move axially along the support section 61. The driver 62 is fixedly disposed on the support section 61 and is connected to the DC section 12 via the telescopic rod 63. After the driver 62 is activated, it can drive the telescopic rod 63 to move axially, thereby causing the DC section 12 to move coaxially relative to the expansion section 11.

[0058] In one specific embodiment, the support section 61 is connected to the expansion section 11 by welding or other means. The diameter of the support section 61 is slightly smaller than the diameter of the DC section 12 to ensure that the DC section 12 can extend and retract.

[0059] According to the present invention, the guide plate 21 is generally cylindrical in shape. The outer wall of the guide plate 21 is shaped such that the outer diameter gradually decreases from back to front; specifically, the guide plate 21 is shaped like a frustum.

[0060] A conveying channel 23 communicating with the conveying pipe 4 is provided inside the guide plate 21. The conveying channel 23 is configured to allow the second medium to be sprayed towards the confluence of the first medium. In a specific embodiment, the conveying channel 23 is configured as an annular shape with a diameter that gradually decreases from back to front, and is coaxially arranged inside the guide plate 21.

[0061] In one embodiment, a conveying cavity 24 communicating with the conveying channel 23 is provided at the rear end of the guide plate 21. The conveying cavity 24 is circular and its diameter is larger than that of the conveying channel 23. The front end of the conveying pipe 4 communicates with the conveying cavity 24. After the dry powder enters the conveying cavity 24 along the conveying pipe 4, the space of the conveying cavity 24 is relatively large, allowing the dry powder to diffuse within the conveying cavity 24 before being sprayed out through the conveying channel 23.

[0062] The flow guide 2 also includes a flow guide core 22 coaxially fixed at the rear end of the flow guide disk 21. The flow guide core 22 is constructed in the shape of a cylindrical rod, and its outer diameter is smaller than that of the flow guide disk 21. A rectifier 5 is coaxially fixed inside the outer cylinder 1. The rectifier 5 is located behind the flow guide 2 and is coaxially fixedly connected to the flow guide core 22.

[0063] In a preferred embodiment, the outer cylinder 1 includes a bent section 13 located behind the rectifier 5. Figure 1As shown, the delivery pipe 4 enters the outer cylinder 1 from the bend section 13. After passing through the outer wall of the bend section 13, the delivery pipe 4 extends towards the front end of the multiphase medium long-range fire monitor 100, passing coaxially through the rectifier 5 and the guide core 22 in sequence, and coaxially communicating with the delivery chamber 24. In this configuration, the delivery pipe 4 for conveying dry powder enters from the bend section 13 of the outer cylinder 1, and then quickly coincides with the central axis of the front end of the multiphase medium long-range fire monitor 100. This reduces the influence of the delivery pipe 4 on the flow field uniformity inside the outer cylinder 1, thereby increasing the range.

[0064] The rectifier 5 is installed in the inlet section 16 by welding or other means, and the guide core 22 is connected to the rectifier 5 by welding or other means. The delivery pipe 4 is connected to the rectifier 5, the guide core 22, and the guide plate 21 by welding. The rectifier 5 is well known to those skilled in the art and will not be described in detail here.

[0065] According to the present invention, the outer cylinder 1 further includes a throat 14 coaxially disposed at the rear end of the expansion section 11, and a contraction section 15 coaxially disposed at the rear end of the throat 14. The contraction section 15 is constructed with an inner diameter that gradually decreases from rear to front. A water inlet section 16 is coaxially disposed at the rear end of the contraction section 15, and a bend section 13 is connected to the rear end of the water inlet section 16. In this configuration, the liquid phase flows sequentially from rear to front along the bend section 13, the water inlet section 16, the contraction section 15, the throat 14, the expansion section 11, and the direct flow section 12, and is finally ejected as a multiphase medium long-range fire monitor 100. When the liquid phase passes through the contraction section 15, the size of the contraction section 15 gradually decreases, thereby increasing the flow velocity of the liquid phase. After passing through the throat 14, the liquid phase is ejected through the annular channel 3 between the expansion section 11 and the guide plate 21.

[0066] In one specific embodiment, the bend section 13, the inlet section 16, the contraction section 15, the throat 14, and the expansion section 11 can be connected by welding or casting.

[0067] In one embodiment, the diameter of the throat 14 is 0.6-0.9 times, preferably 0.8 times, the diameter of the inlet section 16.

[0068] In one embodiment, the diameter of the guide core 22 is 0.1-0.4 times the diameter of the throat 14, preferably 0.2 times.

[0069] In a preferred embodiment, the maximum diameter of the guide plate 21 is located at the axial midpoint of the expansion section 11.

[0070] In one embodiment, the maximum diameter of the guide disk 21 is 6-8 times the diameter of the guide core 22, preferably 7 times.

[0071] In one embodiment, the diameter of the delivery pipe 4 is 0.6-0.95 times the diameter of the guide core 22, preferably 0.8 times.

[0072] In a preferred embodiment, the angle between the inner wall of the contraction section 15 and the central axis is 30°, and the angle between the inner wall of the expansion section 11 and the central axis is 45°.

[0073] In one embodiment, the length of the DC section 12 is 0.2-0.8 times the maximum diameter of the guide plate 21, preferably 0.4-0.6 times, and more preferably 0.5 times.

[0074] In one embodiment, the axial length of the portion of the guide plate 21 with the conveying channel 23 is 0.2-0.8 times the maximum diameter of the guide plate 21, preferably 0.6 times.

[0075] In one embodiment, the angle between the conveying channel 23 within the guide plate 21 and the central axis is 1-5°, preferably 2.5°.

[0076] In one embodiment, the maximum outer diameter of the conveying channel 23 is 0.3-0.45 times the maximum diameter of the guide plate 21, preferably 0.4 times.

[0077] The radial spacing of the conveying channel 23 (the radial dimension of the opening of the conveying channel 23) is 0.01-0.1 times the maximum diameter of the guide plate 21, preferably 0.05 times.

[0078] According to a preferred embodiment of the present invention, a rectifier cone 7 is coaxially disposed at the front end of the guide member 2. The rectifier cone 7 can disrupt the vortex generated in front of the guide plate 21, reduce the influence of the vortex on the dry powder jet 102, improve the spray concentration and accuracy of the dry powder jet 102, and enable the dry powder jet 102 to more accurately converge with the liquid jet 101 at the same position, thereby increasing the range.

[0079] In one specific embodiment, the rectifier cone 7 is configured with a shape in which the outer diameter gradually decreases from rear to front. For example... Figure 1 As shown, the rectifier cone 7 is configured in a conical shape, and the rear end of the rectifier cone 7 ( Figure 1 The diameter of the left end of the rectifier cone 7 is smaller than the diameter of the front end of the conveying channel 23. The angle of the rectifier cone 7 can be adjusted by those skilled in the art according to the actual situation.

[0080] In one embodiment, the maximum diameter of the rectifier cone 7 is 0.2-0.6 times the maximum diameter of the guide plate 21, preferably 0.4 times.

[0081] In one embodiment, the axial length of the rectifier cone 7 is 0.2-0.8 times, preferably 0.5 times, the maximum diameter of the guide disk 21.

[0082] According to the present invention, a multiphase medium long-distance fire fighting method is also provided. Using the multiphase medium long-distance fire monitor 100 provided according to the present invention, the rear end of the bend section 13 of the outer cylinder 1 is connected to a liquid phase, and the liquid phase is transported into it from the rear end of the outer cylinder 1. The rear end of the conveying pipe 4 is connected to dry powder, and the dry powder is transported into it from the rear end of the conveying pipe 4. The liquid phase and dry powder are sprayed out from the front end of the multiphase medium long-distance fire monitor 100 and converge at the same position, so that the dry powder jet is carried forward by the liquid phase jet.

[0083] When using the multiphase medium long-range fire monitor 100 provided according to the present invention in the blooming mode, the telescopic rod 63 is controlled by the driver 62 to put the DC section 12 in the retracted position (the DC section 12 moves backward relative to the expansion section 11), so that the liquid phase is rectified from the water inlet section 16 by the rectifier 5, passes through the contraction section 15 and the throat 14, and is sprayed out through the annular channel 3 between the guide plate 21 and the expansion section 11 to form the blooming mode.

[0084] When using the liquid jet mode of the multiphase medium long-range fire monitor 100 provided according to the present invention, the telescopic rod 63 is controlled by the driver 62 to make the DC section 12 extend (the DC section 12 moves forward relative to the expansion section 11), so that the liquid phase is rectified from the water inlet section 16 by the rectifier 5, passes through the contraction section 15 and the throat 14, and is ejected through the annular channel 3 between the guide plate 21 and the expansion section 11, and then is redirected by the DC section 12 to form a liquid jet.

[0085] When using the multiphase medium long-range fire monitor 100 provided according to the present invention to spray dry powder, nitrogen carries the dry powder into the conveying pipe 4, passes through the rectifier 5 and the guide core 22 into the conveying chamber 24 of the guide plate 21, and then sprays out through the conveying channel 23 to form a dry powder jet.

[0086] When using the multiphase medium long-range fire monitor 100 provided according to the present invention for DC / dry powder coordinated spraying, the multiphase medium long-range fire monitor 100 is adjusted to liquid phase jet mode, and dry powder is sprayed at the same time. Then the dry powder jet 102 is carried forward by the liquid phase jet 101 and finally the dry powder / liquid phase jet reaches a longer spraying distance.

[0087] Experimental Example 1

[0088] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0089] Liquid phase pressure 1MPa, flow rate 60L / s.

[0090] Dry powder flow rate: 6 kg / s.

[0091] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0092] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0093] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0094] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0095] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 42m, and 66m respectively.

[0096] Experimental Example 2

[0097] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0098] Liquid phase pressure 1MPa, flow rate 60L / s.

[0099] Dry powder flow rate: 6 kg / s.

[0100] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0101] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0102] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0103] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0104] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 4 cm.

[0105] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 40m, and 65m respectively.

[0106] Experiment Example 3

[0107] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0108] Liquid phase pressure 1MPa, flow rate 60L / s.

[0109] Dry powder flow rate: 6 kg / s.

[0110] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0111] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0112] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0113] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0114] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 4.5 cm.

[0115] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 40.8m, and 65.3m respectively.

[0116] Experiment Example 4

[0117] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0118] Liquid phase pressure 1MPa, flow rate 60L / s.

[0119] Dry powder flow rate: 6 kg / s.

[0120] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0121] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0122] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0123] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0124] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 5cm.

[0125] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.6m, and 65.8m respectively.

[0126] Experimental Example 5

[0127] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0128] Liquid phase pressure 1MPa, flow rate 60L / s.

[0129] Dry powder flow rate: 6 kg / s.

[0130] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0131] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0132] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0133] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0134] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 6cm.

[0135] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.8m, and 65.9m respectively.

[0136] Experimental Example 6

[0137] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0138] Liquid phase pressure 1MPa, flow rate 60L / s.

[0139] Dry powder flow rate: 6 kg / s.

[0140] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0141] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0142] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0143] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0144] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 6.5 cm.

[0145] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.6m, and 65.6m respectively.

[0146] Experimental Example 7

[0147] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0148] Liquid phase pressure 1MPa, flow rate 60L / s.

[0149] Dry powder flow rate: 6 kg / s.

[0150] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0151] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0152] The angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0153] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0154] The parameters are the same as in Experiment 1, except that the axial length of the conveying channel 23 is 7cm.

[0155] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.4m, and 65.3m respectively.

[0156] Experimental Example 8

[0157] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0158] Liquid phase pressure 1MPa, flow rate 60L / s.

[0159] Dry powder flow rate: 6 kg / s.

[0160] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0161] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0162] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0163] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0164] The parameters are the same as in Experiment 1, except that the angle between the conveying channel 23 and the central axis is 1°.

[0165] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 43m, and 63m respectively.

[0166] Experiment Example 9

[0167] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0168] Liquid phase pressure 1MPa, flow rate 60L / s.

[0169] Dry powder flow rate: 6 kg / s.

[0170] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0171] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0172] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0173] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0174] The parameters are the same as in Experiment 1, except that the angle between the conveying channel 23 and the central axis is 1.5°.

[0175] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 42.7m, and 64m respectively.

[0176] Experimental Example 10

[0177] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0178] Liquid phase pressure 1MPa, flow rate 60L / s.

[0179] Dry powder flow rate: 6 kg / s.

[0180] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0181] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0182] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0183] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0184] The parameters are the same as in Experiment 1, except that the angle between the conveying channel 23 and the central axis is 2°.

[0185] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 42.3m, and 65m respectively.

[0186] Experimental Example 11

[0187] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0188] Liquid phase pressure 1MPa, flow rate 60L / s.

[0189] Dry powder flow rate: 6 kg / s.

[0190] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0191] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0192] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0193] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0194] The parameters are the same as in Experiment Example 1, except that the angle between the conveying channel 23 and the central axis is 3°.

[0195] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.6m, and 65.3m respectively.

[0196] Experimental Example Twelve

[0197] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0198] Liquid phase pressure 1MPa, flow rate 60L / s.

[0199] Dry powder flow rate: 6 kg / s.

[0200] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0201] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0202] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0203] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0204] The parameters are the same as in Experiment Example 1, except that the angle between the conveying channel 23 and the central axis is 3.5°.

[0205] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.2m, and 64.6m respectively.

[0206] Experimental Example Thirteen

[0207] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0208] Liquid phase pressure 1MPa, flow rate 60L / s.

[0209] Dry powder flow rate: 6 kg / s.

[0210] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0211] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0212] The axial length of the conveying channel 23 is 5.5cm, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0213] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0214] The parameters are the same as in Experiment 1, except that the angle between the conveying channel 23 and the central axis is 4°.

[0215] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 40.9m, and 64m respectively.

[0216] Experimental Example Fourteen

[0217] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0218] Liquid phase pressure 1MPa, flow rate 60L / s.

[0219] Dry powder flow rate: 6 kg / s.

[0220] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0221] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0222] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, and the maximum outer diameter of the conveying channel 23 is 3.7cm.

[0223] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0224] The parameters are the same as in Experiment 1, except that the radial spacing of the conveying channels 23 is 0.3 cm.

[0225] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41m, and 75m respectively.

[0226] Experimental Example 15

[0227] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0228] Liquid phase pressure 1MPa, flow rate 60L / s.

[0229] Dry powder flow rate: 6 kg / s.

[0230] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0231] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0232] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, and the maximum outer diameter of the conveying channel 23 is 3.7cm.

[0233] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0234] The parameters are the same as in Experiment 1, except that the radial spacing of the conveying channels 23 is 0.4 cm.

[0235] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41.6m, and 75.4m respectively.

[0236] Experimental Example Sixteen

[0237] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0238] Liquid phase pressure 1MPa, flow rate 60L / s.

[0239] Dry powder flow rate: 6 kg / s.

[0240] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0241] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0242] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, and the maximum outer diameter of the conveying channel 23 is 3.7cm.

[0243] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0244] The parameters are the same as in Experiment 1, except that the radial spacing of the conveying channels 23 is 0.5 cm.

[0245] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 41m, and 74.8m respectively.

[0246] Experimental Example 17

[0247] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0248] Liquid phase pressure 1MPa, flow rate 60L / s.

[0249] Dry powder flow rate: 6 kg / s.

[0250] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0251] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0252] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, and the maximum outer diameter of the conveying channel 23 is 3.7cm.

[0253] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7cm and an axial length of 4.6cm.

[0254] The parameters are the same as in Experiment 1, except that the radial spacing of the conveying channels 23 is 0.6 cm.

[0255] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 76m, 40m, and 73.5m respectively.

[0256] Experimental Example 18

[0257] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0258] Liquid phase pressure 1MPa, flow rate 60L / s.

[0259] Dry powder flow rate: 6 kg / s.

[0260] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0261] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0262] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0263] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7 cm.

[0264] The parameters are the same as in Experiment Example 1, except that the axial length of the rectifier cone 7 is 3cm.

[0265] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 75.8m, 41m, and 74.5m respectively.

[0266] Experimental Example 19

[0267] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0268] Liquid phase pressure 1MPa, flow rate 60L / s.

[0269] Dry powder flow rate: 6 kg / s.

[0270] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0271] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0272] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0273] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7 cm.

[0274] The parameters are the same as in Experiment 1, except that the axial length of the rectifier cone 7 is 4 cm.

[0275] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 75.9m, 41.6m, and 75.3m respectively.

[0276] Experiment Example 20

[0277] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0278] Liquid phase pressure 1MPa, flow rate 60L / s.

[0279] Dry powder flow rate: 6 kg / s.

[0280] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0281] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0282] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0283] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7 cm.

[0284] The parameters are the same as in Experiment Example 1, except that the axial length of the rectifier cone 7 is 5cm.

[0285] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 75.9m, 41.7m, and 75.4m respectively.

[0286] Experimental Example 21

[0287] The multiphase medium long-range fire monitor 100 is used for spraying, and the parameters are designed as follows.

[0288] Liquid phase pressure 1MPa, flow rate 60L / s.

[0289] Dry powder flow rate: 6 kg / s.

[0290] The diameter of the inlet section 16 is 8cm, the diameter of the throat 14 is 6.4cm, the diameter of the guide core 22 is 1.3cm, the maximum diameter of the guide plate 21 is located at the center of the expansion section 11, the maximum diameter of the guide plate 21 is 9.2cm, the diameter of the delivery pipe 4 is 1cm, and the length of the direct flow section 12 is 4.6cm.

[0291] The angle between the contraction section 15 and the central axis is 30°, and the angle between the expansion section 11 and the central axis is 45°.

[0292] The axial length of the conveying channel 23 is 5.5cm, the angle between the conveying channel 23 and the central axis is 2.5°, the maximum outer diameter of the conveying channel 23 is 3.7cm, and the radial spacing of the conveying channel 23 is 0.46cm.

[0293] The rectifier cone 7 is designed in a conical shape with a maximum diameter of 3.7 cm.

[0294] The parameters are the same as in Experiment 1, except that the axial length of the rectifier cone 7 is 6 cm.

[0295] Liquid jet test, dry powder spray test, and DC / dry powder combined spray test were conducted respectively, with spray ranges of 75.8m, 41.2m, and 74.6m respectively.

[0296] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0297] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0298] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multiphase medium long-range fire monitor, characterized in that, include: outer cylinder(1); A flow guide (2) coaxially disposed within the outer cylinder (1), wherein the flow guide (2) and the outer cylinder (1) form an annular channel (3) allowing the passage of a first medium; and The conveying pipe (4) is used to convey the second medium. The guide (2) is constructed as a hollow structure. The conveying pipe (4) is connected to the guide (2), so that the second medium is ejected from the guide (2).

2. The multiphase medium long-range fire monitor according to claim 1, characterized in that, The guide (2) is configured to allow the first medium and the second medium to converge toward the central axis of the outer cylinder (1) after being ejected, and to converge at the same position.

3. The multiphase medium long-range fire monitor according to claim 2, characterized in that, The outer cylinder (1) includes an expansion section (11) and a direct current section (12) coaxially disposed on the expansion section (11). The expansion section (11) is constructed in a shape with an inner diameter that gradually increases from back to front. The flow guide (2) includes a flow guide disk (21), and the axial rear end of the flow guide disk (21) is disposed within the axial length range of the expansion section (11).

4. The multiphase medium long-range fire monitor according to claim 3, characterized in that, The outer wall of the guide plate (21) is shaped such that the outer diameter gradually decreases from back to front. A conveying channel (23) communicating with the conveying pipe (4) is provided inside the guide plate (21). The conveying channel (23) is configured to allow the second medium to be sprayed toward the confluence of the first medium.

5. The multiphase medium long-range fire monitor according to claim 4, characterized in that, The conveying channel (23) is constructed in the shape of an annular ring with a diameter that gradually decreases from back to front, and is coaxially arranged inside the guide plate (21).

6. The multiphase medium long-range fire monitor according to claim 5, characterized in that, The flow guide (2) also includes a flow guide core (22) coaxially disposed at the rear end of the flow guide disk (21). The outer diameter of the flow guide core (22) is smaller than the outer diameter of the flow guide disk (21). A rectifier (5) is coaxially disposed inside the outer cylinder (1). The flow guide core (22) is coaxially connected to the rectifier (5).

7. The multiphase medium long-range fire monitor according to claim 6, characterized in that, A conveying cavity (24) communicating with the conveying channel (23) is provided in the rear end of the guide plate (21). The conveying pipe (4) passes through the rectifier (5) and the guide core (22) in sequence and communicates with the conveying cavity (24).

8. The multiphase medium long-range fire monitor according to any one of claims 1 to 7, characterized in that, The outer cylinder (1) includes a bend section (13), and the conveying pipe (4) enters the outer cylinder (1) from the bend section (13).

9. The multiphase medium long-range fire monitor according to any one of claims 3 to 7, characterized in that, The outer cylinder (1) also includes a throat (14) coaxially disposed at the rear end of the expansion section (11), and a contraction section (15) coaxially disposed at the rear end of the throat (14). The contraction section (15) is constructed in a shape with an inner diameter that gradually decreases from back to front, and a water inlet section (16) coaxially disposed at the rear end of the contraction section (15).

10. The multiphase medium long-range fire monitor according to any one of claims 3 to 7, characterized in that, The DC section (12) is connected to the expansion section (11) via a telescopic mechanism (6), which is configured to allow the DC section (12) to move axially relative to the expansion section (11).

11. The multiphase medium long-range fire monitor according to claim 10, characterized in that, The telescopic mechanism (6) includes: A support section (61) is arranged along the axial direction, and the DC section (12) is movably connected to the support section (61); The driver (62) is mounted on the support section (61); and The telescopic rod (63) is connected to the DC section (12) via the driver (62), thereby driving the DC section (12) to move coaxially relative to the expansion section (11).

12. The multiphase medium long-range fire monitor according to any one of claims 1 to 7, characterized in that, A rectifier cone (7) is coaxially provided at the front end of the flow guide (2).

13. The multiphase medium long-range fire monitor according to claim 12, characterized in that, The rectifier cone (7) is constructed with an outer diameter that gradually decreases from back to front.

14. A multiphase medium long-distance fire suppression method, characterized in that, Using the multiphase medium long-range fire monitor according to any one of claims 1 to 13, a liquid phase is conveyed into the outer cylinder (1) from the rear end, and dry powder is conveyed into the conveying pipe (4) from the rear end, so that the liquid phase and dry powder are sprayed out from the front end of the multiphase medium long-range fire monitor and converge at the same position, so that the dry powder jet is carried forward by the liquid phase jet.

15. A method of using a multiphase medium long-range fire monitor according to any one of claims 1 to 13, characterized in that, Multiphase medium long-range fire monitors are used in petrochemical fires.

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