Automatic fire fighting device

Abstract

The utility model provides an automatic fire-fighting device, which is used for spraying fire extinguishment at the bottom of a bridge, and comprises a temperature sensing spraying assembly which is configured to be capable of being automatically opened at a preset temperature alpha, is arranged on a side slope and is close to a column body; one end of the water pipe is connected with the temperature sensing spraying assembly, and the other end is connected with a water source; the pressure monitoring assembly and the pump assembly are installed on the water conveying pipe, the pressure monitoring assembly is in control connection with the pump assembly, and the pressure monitoring assembly is used for monitoring the water pressure of the water conveying pipe and controlling the pump assembly to be opened or closed. When welding slag falls in the beam body welding construction process to cause small-area fire on the slope surface of the bridge bottom and the environment temperature reaches the preset temperature alpha, the temperature sensing spraying assembly automatically sprays water, and the pump assembly pressurizes water flow in the water conveying pipe, so that the temperature sensing spraying assembly can continuously and stably spray water for cooling, and the purpose of controlling the initial fire disaster is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge fire protection, and particularly relates to an automatic fire-fighting device. Background Art

[0002] Bridges are an important means to improve road traffic capacity. Especially when building a bridge on a hillside, it can "replace the bridge with a road", reduce the excavation and damage to the mountain body, protect the natural form of the mountain body, and at the same time enable the road in the hillside to extend continuously and smoothly. A large amount of welding construction is required when building a steel structure bridge. Although fire prevention measures such as fire catching are set during welding construction, it is inevitable that welding slag will fall or the cable will be burned due to overloading during high-altitude welding work. Since the bottom slope of the bridge is overgrown with weeds and thick jungles, the welding slag or the burned cable falling on the slope is likely to cause a fire on the bottom slope of the bridge. If the fire is not extinguished in time to control the initial fire situation, the fire area will quickly expand, and in severe cases, it may even cause a large-scale mountain fire, causing great harm to national resources and people's lives and property. Therefore, there is an urgent need for an automatic fire extinguishing device to control the fire situation in time when a fire occurs on the slope under the bridge due to bridge construction. Summary of the Utility Model

[0003] One of the purposes of the utility model is to provide an automatic fire-fighting device to solve the problem that it is difficult to control the initial danger when a fire is caused by welding slag or a burned cable falling on the slope during bridge welding construction, and to prevent the occurrence of large-scale mountain fires.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] An automatic fire-fighting device for spraying and extinguishing fire at the bottom of a bridge. The bridge includes a column body and a beam body. One end of the column body is connected to the beam body, and the other end of the column body is supported on a slope. The fire-fighting device includes: a temperature-sensitive spraying component configured to automatically open at a preset temperature α. The temperature-sensitive spraying component is arranged on the slope and close to the column body; a water delivery pipe, one end of which is connected to the temperature-sensitive spraying component and the other end is used to connect to a water source; a pressure monitoring component and a pump component, which are respectively installed on the water delivery pipe, and the pressure monitoring component is in control connection with the pump component. The pressure monitoring component is used to monitor the water pressure of the water delivery pipe and control the opening or closing of the pump component.

[0006] Using the above-mentioned automatic fire-fighting device, a temperature-sensitive spraying component is arranged on the slope near the bridge column. When welding slag drops during the welding construction of the beam body, causing a small area of fire on the slope at the bottom of the bridge and the ambient temperature reaches the preset temperature α, the temperature-sensitive spraying component can automatically open and spray water, so that the water in the water delivery pipe is ejected. The pressure monitoring component monitors the water pressure change in the water delivery pipe and controls the opening of the pump component. The pump component is used to pressurize the water flow in the water delivery pipe, so that the temperature-sensitive spraying component can continuously and stably spray water to cool down, achieving the purpose of controlling the initial fire disaster. The structure of the utility model is simple and the installation is convenient. When the slope catches fire due to bridge construction, it can automatically spray water to extinguish the fire and ensure the construction safety.

[0007] Further, the temperature-sensitive spraying component includes a spray head. The spray head includes a spray head body, a water delivery channel and a temperature-sensitive element. The water delivery channel is formed inside the spray head body, and the temperature-sensitive element is installed on the water delivery channel for sealing the water in the water delivery channel. The temperature-sensitive element is configured to be able to melt or rupture at the preset temperature α.

[0008] According to the above technical means, the temperature-sensitive element is installed on the water delivery channel to seal the water delivery channel. When a fire occurs and the ambient temperature around the temperature-sensitive element reaches the preset temperature α, the temperature-sensitive element melts or ruptures, opening the water delivery channel, and the water in the water delivery pipe can be ejected from the water delivery channel.

[0009] Further, the temperature-sensitive spraying component further includes a support pipe. One end of the support pipe is communicated with the water delivery pipe, and the other end is communicated with the spray head, and the support pipe is vertically arranged on the slope.

[0010] According to the above technical means, the support pipe supports the spray head at a certain height from the slope, so that the spray head can spray water to a larger range when spraying water, so as to cool down a larger range of the burning slope.

[0011] Further, the preset temperature α≥68°C.

[0012] According to the above technical means, setting the preset temperature α above 68°C can not only ensure the personal safety of the slope workers when the slope catches fire, but also avoid the misoperation of the spray head.

[0013] Further, the pressure monitoring component includes a wet alarm valve and a pressure switch. The wet alarm valve is installed on the water delivery pipe, the pressure switch is connected to the wet alarm valve, and the pressure switch is connected to the pump component for control.

[0014] According to the above technical means, when the water in the water delivery pipe is sprayed out through the temperature-sensitive spraying assembly, the valve flap of the wet alarm valve opens, enabling the pressure switch to receive the water pressure signal to control the opening or closing of the pump assembly.

[0015] Furthermore, it further includes a pressure signal line, with both ends of the pressure signal line respectively connected to the pressure switch and the pump assembly, for transmitting the water pressure signal monitored by the pressure switch to the pump assembly to control the opening or closing of the pump assembly.

[0016] According to the above technical means, the pressure signal line can transmit the water pressure signal received by the pressure switch to the pump assembly, so that the pump assembly can pressurize the water in the water delivery pipe when a fire occurs.

[0017] Furthermore, the pump assembly includes a pressure pump and a distribution box. The pressure pump is installed on the water delivery pipe, the distribution box is controllably connected to the pressure pump, and the pressure switch is controllably connected to the distribution box.

[0018] According to the above technical means, the pressure switch transmits the monitored water pressure signal to the distribution box, and the distribution box controls the opening or closing of the pressure pump after receiving the water pressure signal.

[0019] Furthermore, a plurality of the temperature-sensitive spraying assemblies are arranged on the water delivery pipe, and the plurality of temperature-sensitive spraying assemblies are evenly arranged along the length direction of the beam body.

[0020] According to the above technical means, arranging a plurality of the temperature-sensitive spraying assemblies along the length direction of the beam body can spray water for cooling in a larger range when a slope catches fire, effectively controlling the initial disaster situation.

[0021] Furthermore, the water source is a fire fighting water tank.

[0022] According to the above technical means, the fire fighting water tank can store fire fighting water, providing a large amount of pressurized water source for the temperature-sensitive spraying assembly, so that the temperature-sensitive spraying assembly can spray water continuously and stably.

[0023] Furthermore, the water delivery pipe is a galvanized steel pipe.

[0024] According to the above technical means, the galvanized steel pipe has good corrosion resistance, which can effectively prevent the water delivery pipe from corroding; at the same time, the galvanized steel pipe has good high-temperature resistance, and during a fire, the water delivery pipe will not melt and deform, so as to maintain good water delivery performance.

[0025] The beneficial effects of the present utility model are as follows:

[0026] Adopt the above-mentioned automatic fire-fighting device, and arrange a temperature-sensitive spraying component on the slope surface close to the bridge column. When welding slag drops during the welding construction of the beam body, causing a small area of fire on the slope surface at the bottom of the bridge and the environmental temperature reaches the preset temperature α, the temperature-sensitive spraying component automatically opens and sprays water, so that the water in the water delivery pipe flows to generate a water flow pressure. The pressure monitoring component monitors the water pressure change in the water delivery pipe and controls and opens the pump component. The pump component is used to increase the pressure of the water flow in the water delivery pipe, so that the temperature-sensitive spraying component continuously and stably sprays water to cool down, achieving the purpose of controlling the initial fire disaster. The structure of the utility model is simple and the installation is convenient. It can automatically spray and extinguish fire when the slope catches fire due to bridge construction, ensuring construction safety. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 is the side view of the overall structure of the present invention;

[0029] Figure 2 is the top view of the partial structure of the present invention;

[0030] Figure 3 is the structural schematic diagram of the temperature-sensitive spraying component of the present invention;

[0031] Figure 4 is the structural schematic diagram of the pressure monitoring component installed on the water delivery pipe of the present invention.

[0032] Wherein:

[0033] 100, temperature-sensitive spraying component; 110, spray head; 111, spray head body; 112, water delivery channel; 113, temperature-sensitive element; 120, support pipe; 200, water delivery pipe; 300, pressure monitoring component; 310, wet alarm valve; 320, pressure switch; 400, pump component; 410, pressure pump; 420, distribution box; 500, pressure signal line; 600, fire fighting water tank. Detailed Embodiment

[0034] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. The accompanying drawings are only for illustrative purposes and should not be construed as a limitation to the present utility model. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for explaining the present utility model and not for limiting the protection scope of the present utility model.

[0035] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0036] This embodiment provides an Figures 1 to 4 automatic fire-fighting device as shown, which is used for spraying and extinguishing fires at the bottom of a bridge. The bridge includes a column and a beam. One end of the column is connected to the beam, and the other end of the column is supported on a slope; the fire-fighting device includes: a temperature-sensitive spraying component 100, which is configured to automatically open at a preset temperature α. The temperature-sensitive spraying component 100 is arranged on the slope and close to the column; a water delivery pipe 200, one end of the water delivery pipe 200 is connected to the temperature-sensitive spraying component 100, and the other end is used to connect to a water source; a pressure monitoring component 300 and a pump component 400, the pressure monitoring component 300 and the pump component 400 are respectively installed on the water delivery pipe 200, and the pressure monitoring component 300 is control-connected to the pump component 400. The pressure monitoring component 300 is used to monitor the water pressure in the water delivery pipe 200 and control the pump component 400 to turn on or off.

[0037] By using the above automatic fire-fighting device, the temperature-sensitive spraying component 100 is arranged on the slope close to the bridge column. When welding slag drops during the welding construction process of the beam body, causing a fire on the slope at the bottom of the bridge and the ambient temperature reaches the preset temperature α, the temperature-sensitive spraying component 100 automatically opens and sprays water, causing the water in the water delivery pipe 200 to spray out and generate a water flow pressure. The pressure monitoring component 300 monitors the change in water pressure in the water delivery pipe 200 and controls and opens the pump component 400. The pump component 400 is used to increase the pressure of the water flow in the water delivery pipe 200, so that the temperature-sensitive spraying component 100 continuously and stably sprays water to cool down, achieving the purpose of controlling the initial fire situation. The structure of the present utility model is simple and the installation is convenient. It can automatically spray and extinguish fires when a fire occurs on the slope due to bridge construction, ensuring construction safety.

[0038] As Figure 3As shown in the figure, in this embodiment, the temperature-sensitive sprinkler assembly 100 includes a sprinkler head 110. The sprinkler head 110 includes a nozzle body 111, a water delivery channel 112, and a temperature-sensitive element 113. The water delivery channel 112 is formed inside the nozzle body 111, and the temperature-sensitive element 113 is installed on the water delivery channel 112 for sealing water in the water delivery channel 112. The temperature-sensitive element 113 is configured to be able to melt or break at a preset temperature α. The temperature-sensitive element 113 is installed on the water delivery channel 112 to seal the water delivery channel 112. When a slope catches fire and the ambient temperature around the temperature-sensitive element 113 reaches the preset temperature α, the temperature-sensitive element 113 melts or breaks, opening the water delivery channel 112 so that the water in the water delivery pipe 200 can be sprayed out from the water delivery channel 112.

[0039] Preferably, the temperature-sensitive element 113 is a vitreous body filled with an organic solution having a high coefficient of thermal expansion, or the temperature-sensitive element 113 is a fusible alloy.

[0040] In other embodiments, the temperature-sensitive element 113 can also be a glass bulb type temperature-sensitive member installed at the water outlet end of the water delivery channel 112.

[0041] As Figure 3 shown in the figure, in this embodiment, the temperature-sensitive sprinkler assembly 100 further includes a support pipe 120. One end of the support pipe 120 is connected to the water delivery pipe 200, and the other end is connected to the sprinkler head 110, and the support pipe 120 is vertically arranged on the slope. The support pipe 120 supports the sprinkler head 110 at a certain height from the slope, so that the sprinkler head 110 can spray water over a larger range when spraying water, in order to cool a larger range of the burning slope.

[0042] Preferably, the length of the support pipe 120 is 2m, which can make the sprinkler head 110 have a certain distance from the slope, so that the water spraying and cooling range of the sprinkler head 110 is larger.

[0043] Preferably, the support pipe 120 is a DN25 galvanized steel pipe.

[0044] In other embodiments, the length of the support pipe 120 can also be greater than or less than 2m, so that the sprinkler head 110 can have a certain distance from the slope.

[0045] In other embodiments, the support pipe 120 can also be made of materials such as PE pipes, stainless steel pipes, and PVC pipes.

[0046] In this embodiment, the preset temperature α ≥ 68°C. Setting the preset temperature α to above 68°C can not only ensure the personal safety of slope workers when the slope catches fire, but also prevent the sprinkler head 110 from being accidentally activated. When the ambient temperature reaches the preset temperature α, the temperature-sensitive sprinkler assembly 100 can be automatically opened to enter the working state to spray water and cool the burning slope without manual intervention.

[0047] As Figure 4 shown, in this embodiment, the pressure monitoring component 300 includes a wet alarm valve 310 and a pressure switch 320. The wet alarm valve 310 is installed on the water delivery pipe 200. The pressure switch 320 is connected to the wet alarm valve 310, and the pressure switch 320 is connected to the pump assembly 400 for control. When the water in the water delivery pipe 200 is sprayed out through the temperature-sensitive sprinkler component 100, the valve flap of the wet alarm valve 310 opens, enabling the pressure switch 320 to receive the water pressure signal to control the opening or closing of the pump assembly 400.

[0048] Preferably, the pressure switch 320 is connected to the wet alarm valve 310 through a connecting pipe. When the water in the water delivery pipe 200 is sprayed out, the valve flap inside the wet alarm valve 310 opens, and part of the water flow can flow to the pressure switch 320 through the connecting pipe, enabling the pressure switch 320 to monitor the water pressure signal.

[0049] Preferably, a hydraulic alarm bell is further provided on the wet alarm valve 310. The hydraulic alarm bell is also connected to the wet alarm valve 310 through a connecting pipe. When the water in the water delivery pipe 200 is sprayed out, the valve flap inside the wet alarm valve 310 opens, enabling part of the water flow to flow to the hydraulic alarm bell through the connecting pipe, enabling the hydraulic alarm bell to emit a sound and light alarm to warn the nearby staff that a disaster has occurred, so that the staff can take emergency measures in time.

[0050] As Figure 1 and Figure 2 shown, in this embodiment, the automatic fire-fighting device further includes a pressure signal line 500. The two ends of the pressure signal line 500 are respectively connected to the pressure switch 320 and the pump assembly 400, and are used to transmit the water pressure signal monitored by the pressure switch 320 to the pump assembly 400 to control the opening or closing of the pump assembly 400. The pressure signal line 500 can transmit the water pressure signal received by the pressure switch 320 to the pump assembly 400, so that the pump assembly 400 can pressurize the water in the water delivery pipe 200 when a fire breaks out on the slope.

[0051] As Figure 1 shown, in this embodiment, the pump assembly 400 includes a pressure pump 410 and a distribution box 420. The pressure pump 410 is installed on the water delivery pipe 200. The distribution box 420 is connected to the pressure pump 410 for control, and the pressure switch 320 is connected to the distribution box 420 for control. The pressure switch 320 transmits the monitored water pressure signal to the distribution box 420, and the distribution box 420 controls the opening or closing of the pressure pump 410 after receiving the water pressure signal.

[0052] Preferably, the pressure pump 410 is connected to the distribution box 420 through a control signal line, and the pressure switch 320 is connected to the distribution box 420 through a pressure signal line 500. When the pressure switch 320 monitors the water pressure signal, the pressure signal line 500 transmits the pressure signal received by the pressure switch 320 to the distribution box 420. After the distribution box 420 receives the pressure signal, it determines whether to turn on or off the pressure pump 410 through a preset instruction, and then transmits the on / off signal to the pressure pump 410 through the control signal line. The pressure pump 410 receives the control signal to turn on or off.

[0053] As Figure 2 shown, in this embodiment, a plurality of temperature-sensitive sprinkler assemblies 100 are arranged on the water delivery pipe 200, and the plurality of temperature-sensitive sprinkler assemblies 100 are uniformly arranged along the length direction of the beam body. Arranging a plurality of temperature-sensitive sprinkler assemblies 100 along the length direction of the beam body can spray water for cooling in a larger range when a fire breaks out on the slope, effectively controlling the initial disaster situation.

[0054] Preferably, the plurality of temperature-sensitive sprinkler assemblies 100 are arranged on the slope under the beam body, and the distance between two adjacent temperature-sensitive sprinkler assemblies 100 is 2 m.

[0055] In other embodiments, at least some of the plurality of temperature-sensitive sprinkler assemblies 100 may also be arranged on the slope under the beam body to be able to cool in a larger range when a fire breaks out on the slope.

[0056] In other embodiments, the distance between two adjacent temperature-sensitive sprinkler assemblies 100 may also be greater than or equal to 1.5 m. Such a spacing can not only make the spraying range of the temperature-sensitive sprinkler assemblies 100 larger, but also prevent the spacing between two adjacent temperature-sensitive sprinkler assemblies 100 from being too dense, resulting in waste of resources.

[0057] In other embodiments, the plurality of temperature-sensitive sprinkler assemblies 100 may also be installed on the water delivery pipe 200 at non-uniform intervals.

[0058] As Figure 1 shown, in this embodiment, the water source is a fire fighting water tank 600, and the fire fighting water tank 600 is arranged on the slope higher than the temperature-sensitive sprinkler assemblies 100. The fire fighting water tank 600 can store fire fighting water and provide a large amount of pressurized water source for the temperature-sensitive sprinkler assemblies 100, so that when the temperature-sensitive element 113 in the temperature-sensitive sprinkler assemblies 100 breaks at the initial stage of a fire on the slope, the water in the water delivery pipe 200 can be sprayed out from the sprinkler head 110 under the action of the gravity of the water itself to open the valve flap of the wet alarm valve 310.

[0059] Preferably, a water pipe connecting to an external water source is installed on the fire fighting water tank 600 to supply water to the fire fighting water tank 600.

[0060] In other embodiments, the water source can also be a stream formed on a hillside, an excavated well, and so on.

[0061] In this embodiment, the water delivery pipe 200 is a galvanized steel pipe. The galvanized steel pipe has good corrosion resistance and can effectively prevent the water delivery pipe 200 from being corroded. At the same time, the galvanized steel pipe has good high-temperature resistance. In case of a fire, the water delivery pipe 200 will not melt and deform, thus maintaining good water delivery performance.

[0062] Preferably, the water delivery pipe 200 is a DN50 galvanized steel pipe.

[0063] In other embodiments, the water delivery pipe 200 can also be made of materials such as PE pipes, stainless steel pipes, PVC pipes, etc.

[0064] Preferably, the water delivery pipe 200 includes a first pipe and a second pipe. The first pipe is arranged along the length direction of the bridge, and both ends of the second pipe are respectively connected to the water source and the first pipe.

[0065] In other embodiments, multiple water sources can be arranged along the length direction of the bridge. Correspondingly, multiple second pipes can also be arranged to respectively connect the first pipe and each water source. The arrangement of multiple water sources can provide enough water for the first pipe.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An automatic fire-fighting device, characterized in that: Used for spraying fire extinguishing at the bottom of a bridge, the bridge comprises a column and a beam, one end of the column is connected to the beam, and the other end of the column is supported on a slope; the fire fighting device comprises: A temperature-sensitive spray assembly (100), the temperature-sensitive spray assembly (100) being configured to be automatically opened at a preset temperature α, the temperature-sensitive spray assembly (100) being arranged on the slope and close to the column; A water delivery pipe (200), one end of the water delivery pipe (200) being connected to the temperature-sensitive spray assembly (100), and the other end being used for connecting to a water source; A pressure monitoring component (300) and a pump component (400), wherein the pressure monitoring component (300) and the pump component (400) are respectively installed on the water pipe (200), and the pressure monitoring component (300) is control-connected to the pump component (400), and the pressure monitoring component (300) is used to monitor the water pressure of the water pipe (200) and control the pump component (400) to be turned on or off.

2. The automatic fire fighting device according to claim 1, characterized in that: The temperature-sensing spray assembly (100) comprises a spray head (110), wherein the spray head (110) comprises a spray head body (111), a water supply channel (112) and a temperature sensing element (113), wherein the water supply channel (112) is formed inside the spray head body (111), and the temperature sensing element (113) is installed on the water supply channel (112) and is used to seal water in the water supply channel (112); the temperature sensing element (113) is configured to be able to melt or break at a preset temperature α.

3. The automatic fire fighting device according to claim 2, characterized in that: The temperature-sensitive spray assembly (100) further comprises a support pipe (120), one end of the support pipe (120) being connected to the water pipe (200), and the other end of the support pipe (120) being connected to the spray head (110), and the support pipe (120) being vertically arranged on the slope.

4. The automatic fire fighting device according to claim 1 or 2, characterized in that: The preset temperature α is ≥ 68°C.

5. The automatic fire fighting device according to claim 1, characterized in that: The pressure monitoring assembly (300) comprises a wet alarm valve (310) and a pressure switch (320); the wet alarm valve (310) is installed on the water pipe (200); the pressure switch (320) is connected to the wet alarm valve (310); and the pressure switch (320) is controllably connected to the pump assembly (400).

6. The automatic fire fighting device according to claim 5, characterized in that: It also includes a pressure signal line (500), the two ends of which are respectively connected to the pressure switch (320) and the pump assembly (400), and is used to transmit the control signal of the pressure switch (320) to the pump assembly (400) to control the pump assembly (400) to be turned on or off.

7. The automatic fire fighting device according to claim 5, characterized in that: The pump assembly (400) comprises a pressure pump (410) and a distribution box (420); the pressure pump (410) is installed on the water pipe (200); the distribution box (420) is control-connected to the pressure pump (410); and the pressure switch (320) is control-connected to the distribution box (420).

8. The automatic fire fighting device according to claim 1, characterized in that: A plurality of the temperature-sensitive spray assemblies (100) are arranged on the water delivery pipe (200), and the plurality of the temperature-sensitive spray assemblies (100) are evenly arranged along the length direction of the beam body.

9. The automatic fire fighting device according to claim 1, characterized in that: The water source is a fire water tank (600).

10. The automatic fire fighting device according to claim 1, characterized in that: The water pipe (200) is a galvanized steel pipe.

Images