An electrically activated non-pressure storage liquid-based explosion suppression bottle

Abstract

Provided is an electrically activated non-pressure-storage liquid-based explosion suppression bottle, comprising a bottle body, a liquid fire extinguishing agent, a fire extinguishing agent driving assembly, a main bursting disc and a spattering nozzle; the bottle body and the main bursting disc at the bottom thereof constitute the bottle body; the fire extinguishing agent driving assembly is arranged on the inner side of the mouth of the bottle body, and is used to destroy the main bursting disc by the driving force of its action to form an initial overflow channel for the liquid fire extinguishing agent; the spattering nozzle is connected to the main bursting disc, and is used to atomize and spray the liquid fire extinguishing agent overflowing from the position of the main bursting disc; the fire extinguishing agent driving assembly comprises a fixing part, an electric starter, a gas generating part and an actuating part; the electric starter is used to generate an electric starting signal, and includes an electric squib, which is used to start the fire extinguishing agent driving assembly; the gas generating part is used to generate gas to drive the actuating part to move and pressurize the liquid fire extinguishing agent, and the gas generating part includes a gas generating powder; the actuating part directly destroys the main bursting disc or generates a driving force to destroy the main bursting disc under the action of gas generated by the gas generating powder

Description

Technical Field

[0001] The present invention generally relates to the field of fire fighting technology, and in particular to an electrically activated non-pressure storage type liquid-based explosion suppression bottle. Background Art

[0002] Explosion suppression bottles used in firefighting mostly use a pressure storage solution using ultrafine dry powder. The bottle contains a mixture of ultrafine dry powder and high-pressure gas, which requires regular maintenance and inspection for pressure leaks. Ultrafine dry powder will diffuse in the explosion suppression area during operation, and when used to extinguish fires in confined spaces such as airplanes or vehicles, it will affect the vision of passengers and drivers in the cabin. Ultrafine dry powder pressure storage explosion suppression bottles use electric detonators to open the blasting disc, which will inevitably produce fragments, posing a potential hazard to the safety of people in the cabin. Summary of the Invention

[0003] The purpose of the present invention is to provide an electrically activated non-pressure storage liquid-based explosion suppression bottle, which replaces the original ultra-fine dry powder storage pressure with a liquid fire extinguishing agent without pressure storage. It adopts a non-pressure storage solution of a positive arch cross-groove bursting disc, does not produce fragments and has good safety. It uses a clean liquid fire extinguishing agent without endangering the health of occupants.

[0004] The technical solution of the present invention is an electrically activated non-pressure storage liquid-based explosion suppression bottle, comprising a bottle body, a liquid fire extinguishing agent, a fire extinguishing agent driving assembly, a main bursting disc and a splash nozzle; the bottle body and the main bursting disc arranged at the bottom thereof constitute a bottle body, the bottle body is used to contain the liquid fire extinguishing agent and house the fire extinguishing agent driving assembly; the fire extinguishing agent driving assembly is arranged on the inner side of the mouth of the bottle body, and is used to destroy the main bursting disc through the driving force of its action to form an initial overflow channel for the liquid fire extinguishing agent; the splash nozzle is connected to the main bursting disc, and is used to spray the liquid fire extinguishing agent overflowing from the main bursting disc position atomized spraying is performed; the fire extinguishing agent driving assembly includes a fixing part, an electric starter, a gas generating part and an action part; the fixing part is used to fix the fire extinguishing agent driving assembly on the inner side of the bottle body mouth; the electric starter is used to form an electric starting signal, including an electric squib, and the electric squib is used to start the fire extinguishing agent driving assembly; the gas generating part is used to generate gas to drive the action part to move and pressurize the liquid fire extinguishing agent, and the gas generating part includes a gas generating powder; the action part directly destroys the main bursting disc or forms a driving force to destroy the main bursting disc under the action of the gas generated by the gas generating powder.

[0005] Furthermore, the liquid fire extinguishing agent is one of 1,1,1,2,2,4,5,5,5-nonafluoro-4--3-pentanone and 2-bromo-3,3,3,-trifluoropropene or a mixture of the two, the loading amount of the liquid fire extinguishing agent accounts for 85-95% of the volume of the bottle, and the filling amount is 0.5-10 kg.

[0006] Furthermore, the fixing parts of the above-mentioned fire extinguishing agent drive assembly include screws and flanges; there is a center tube on the inner side of the bottle body mouth; the flange fixes the fire extinguishing agent drive assembly in the center tube by screws, and the joint of the bottle body, flange and center tube is sealed by a sealing ring; the sealing ring is made of EPDM rubber; the electric starter is arranged at the center of the flange; the electric starter also includes a squib base, a short-circuit ring, a squib sealing ring, an ignition box, and ignition powder; the squib base is used to fix the squib, and the squib sealing ring is arranged between the inner edge of the flange and the outer edge of the squib base to seal the connection between the flange and the squib base; the ignition box containing ignition powder is sealed and connected to the bottom of the squib base; the charge of the squib is 30 to 300 mg, and the starting current is not less than 1.0 A.

[0007] Furthermore, the ignition powder is one or more of black powder, a mixture of boron and potassium nitrate, and a polymer of magnesium and polytetrafluoroethylene, and the charge amount is 2 to 20 g.

[0008] Furthermore, the gas generating part further comprises a combustion chamber, wherein the combustion chamber and the gas generating powder contained therein are arranged in the space between the periphery of the ignition cartridge and the central tube; the gas generating powder is a composite solid propellant, the combustion temperature of which does not exceed 1400K; the burning rate is not less than 10mm / s; the sum of the outer surface area of ​​the charge, i.e., the initial burning surface, is not less than 20000mm 2 , gas generation volume is 13-26 mol / kg, and charge amount is 10-100g.

[0009] Furthermore, the above-mentioned action member is arranged below the combustion chamber and is connected to the combustion chamber through a through hole below the combustion chamber; the action member moves downward along the inner wall of the central tube under the push of the gas in the combustion chamber.

[0010] Furthermore, the above-mentioned actuating part includes a piston rod, a piston sealing ring and an anti-vibration spring; the piston rod is a T-shaped structure, the upper horizontal rod is connected to the combustion chamber, the lower vertical rod passes through the anti-vibration spring and the bottom end is 0.5-5mm away from the main bursting disc; the piston sealing ring is arranged on the outer periphery of the piston rod to achieve sealing between the piston rod and the inner wall of the center tube; the anti-vibration spring is arranged at the lower part of the piston rod to prevent the piston rod from being dislocated in a vibrating environment; the head of the piston rod is spherical.

[0011] Furthermore, the above-mentioned actuating part includes a piston, a piston sealing ring and an anti-vibration spring; the piston is an inverted U-shaped structure, the upper part is connected to the combustion chamber, and the lower part is connected to the anti-vibration spring; the piston sealing ring is arranged on the outer periphery of the piston to achieve sealing between the piston and the inner wall of the center tube; the anti-vibration spring is used to prevent the piston rod from being dislocated in a vibrating environment.

[0012] Furthermore, a first pressure relief hole is provided on the wall of the central tube below the above-mentioned actuating member. When the actuating member moves to a position below the first pressure relief hole, the first pressure relief hole forms an escape channel for the gas generated by the combustion of the gas generating agent to pressurize the liquid fire extinguishing agent in the bottle.

[0013] Furthermore, the side wall of the above-mentioned combustion chamber is provided with multiple rows of evenly distributed second pressure relief holes, which are used to allow part of the gas generated by the combustion of the gas-generating agent to escape between the central tube and the actuating member. When the actuating member moves below the position of the first pressure relief hole, the liquid fire extinguishing agent in the bottle is pressurized at the same time.

[0014] Furthermore, the above-mentioned actuating parts include a piston, a piston sealing ring, a vibration-isolating spring, a jet tube, a bursting disc pressure cap, and a side bursting disc; the side bursting disc and the bursting disc pressure cap, the piston, and the vibration-isolating spring are sequentially arranged below the combustion chamber in the central tube, the jet tube is arranged below the combustion chamber, and the jet tube is connected to the bottom of the central tube; the side bursting disc is arranged on the side wall of the central tube, and its opening pressure is greater than the opening pressure of the main bursting disc; the piston is an H-shaped structure, and its two sides are sealed and connected to the inner side of the central tube.

[0015] Furthermore, the side bursting disc is a positive arched grooved bursting disc, the groove is a cross-shaped groove, and the opening pressure is 1 to 10 MPa.

[0016] Furthermore, the main bursting disc is a positive arch grooved bursting disc, the groove is a cross groove, the diameter of the cross groove is at least 40 mm, and the opening pressure of the main bursting disc is 0.2-2 MPa.

[0017] Furthermore, the above-mentioned electrically activated non-pressure storage liquid-based explosion suppression bottle also includes a fixed base, which is used to fix the bottle body, including a U-shaped bolt, a flange nut and a support; the U-shaped bolt is fixed to the support via the flange nut, and the arc shape of the support and the U-shaped bolt form a ring shape consistent with the shape of the top, middle or bottom of the bottle body, so as to surround and fix the top, bottom or middle of the bottle body; a conical surface is provided inside the sputtering nozzle to atomize and spray the fire extinguishing agent.

[0018] Furthermore, the above-mentioned gas-generating powder is a composite solid propellant, including a binder, a curing agent, an oxidant and a cooling agent; the binder includes terminal hydroxyl polybutadiene and / or terminal carboxyl polybutadiene, with a content of 10% to 40% by mass; the curing agent is toluene diisocyanate and / or isophorone diisocyanate, with a content of 0.5% to 5% by mass; the oxidant is ammonium perchlorate and / or ammonium nitrate, with a content of 20% to 60% by mass; the cooling agent is azodicarbonamide, with a content of 20% to 60% by mass.

[0019] The present invention is more advanced than the prior art in that:

[0020] 1) In the prior art, armored vehicles use pressurized halon explosion suppression bottles, whose extinguishing medium is gaseous halon and are pre-filled with 4.2 MPa nitrogen. This exhibits a slow decompression phenomenon similar to conventional pressurized fire extinguishers, requiring regular leak checks. Furthermore, the detonation wave generated by an electric detonator is used to open the bursting disc and release the extinguishing agent. This detonation wave has a tearing effect, inevitably generating fragments and posing a risk of injury. The present invention, however, uses the thrust generated by the gas-generating charge to drive the piston rod or piston, applying thrust to the bursting disc to destroy it. This eliminates the generation of fragments and significantly reduces the risk.

[0021] 2) The present invention utilizes the combustion of gas generating agent to generate gas, which on the one hand serves as the driving force for the actuating member and the pressurizing driving force for the liquid fire extinguishing agent. On the other hand, the heating effect of the gas generated by the combustion of gas generating agent is utilized to provide conditions for subsequent atomization, thereby solving the problems of large flow resistance, large heat capacity, and difficulty in atomizing the liquid medium at low temperatures in the prior art. The liquid fire extinguishing agent is pressurized by the combustion gas of the gas generating agent in the bottle and ejected at high pressure through the sputtering nozzle, achieving a good atomization effect. Even at low temperatures, the pressurization can be achieved to the desired level, thereby achieving the desired atomization effect and explosion suppression efficiency.

[0022] 3) The fire extinguishing agent drive assembly of the present invention has an integrated design of electric starter, gas generating part and actuating part. By using a traditional electric squib in combination with a certain amount of ignition powder (an ignition powder box and a specific type and dosage of ignition powder are additionally provided), as well as the coordination of the gas generating powder, the combustion chamber and the actuating part, when an electric starting signal is given, the explosion suppression bottle will spray the fire extinguishing agent within 3ms, and more than 3kg of fire extinguishing medium will be sprayed in 110ms. Its starting time is faster than the 7ms of the prior art.

[0023] 4) The present invention ensures the speed and volume of gas production through the design of the gas-generating agent's burning rate, initial burning surface, and charge amount. The design of the actuating element and the pressure relief hole allows the liquid fire extinguishing agent to be pressurized to a predetermined range simultaneously with the rupture of the main blasting fragment. This allows no less than 3 kg of fire extinguishing agent to be atomized and diffused into a designated area within an extremely short time (50 ms), achieving the effect of rapid fire extinguishing and explosion suppression. Furthermore, the use of a liquid clean fire extinguishing agent instead of traditional ultrafine dry powder solves the problem of ultrafine dry powder affecting the driver's vision after diffusion and affecting the passengers' breathing after being inhaled.

[0024] 4) The present invention adopts a non-pressure storage solution and a positive arch cross-groove bursting disc, which will not produce fragments. This solves the problem of the risk of fragments injuring people after the bursting disc is opened in the traditional pressure storage solution. At the same time, the non-pressure storage solution has no high pressure in the bottle when not in use, which is safer and does not require regular maintenance.

[0025] 5) The device of the present invention has a simple structure and principle. It adopts a non-pressure storage solution, that is, through the principle of gas production by the working of the gas generator, high pressure is generated inside the bottle in a very short time. When the opening pressure of the main bursting disc is reached, the internal liquid fire extinguishing agent is rapidly ejected under the impetus of the high-pressure gas, which can achieve the effect of fire extinguishing and explosion suppression.

[0026] 6) The device structure of the present invention has the characteristic of adapting to a wide range of ambient temperatures: the gas generated by the gas generating agent can heat and pressurize the liquid fire extinguishing agent. In combination with a special type of liquid fire extinguishing agent, the device of the present invention can operate normally within a wide temperature range, and can achieve the characteristic of a wide operating temperature, that is, the ambient temperature can be from -50°C to +80°C.

[0027] The working process of the invented device is that the electrical signal activates the gas-generating agent in the combustion chamber. The gas-generating agent is activated within 0.5ms, generating a large amount of high-pressure gas, which pushes the action component located below it to move, and opens the main bursting piece at the bottom of the bottle body. Then the internal liquid fire extinguishing agent is rapidly ejected under the push of the high-pressure gas generated by the generator. When it hits the sputtering nozzle located at the bottom of the bottle body, it is quickly atomized and diffused to the designated area, thereby achieving the purpose of explosion suppression and fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] These and / or other aspects and advantages of the present invention will become more apparent and more readily understood from the following detailed description of embodiments of the present invention in conjunction with the accompanying drawings, in which:

[0029] Figure 1 This is a schematic structural diagram of an electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 1 of the present invention;

[0030] Figure 2 This is a schematic structural diagram of a fire extinguishing agent driving assembly in an electrically activated non-pressure storage type liquid-based explosion suppression bottle in Example 1 of the present invention;

[0031] Figure 3 This is a schematic structural diagram of an electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 2 of the present invention;

[0032] Figure 4 This is a schematic structural diagram of a fire extinguishing agent driving assembly in an electrically activated non-pressure storage type liquid-based explosion suppression bottle in Example 2 of the present invention;

[0033] Figure 5 This is a schematic structural diagram of an electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 3 of the present invention;

[0034] Figure 6 This is a schematic structural diagram of a fire extinguishing agent driving assembly in an electrically activated non-pressure storage type liquid-based explosion suppression bottle in Example 3 of the present invention;

[0035] Figure 7 Schematic diagram of the structure of the fixed base in the electrically activated non-pressure storage type liquid-based explosion suppression bottle in an embodiment of the present invention;

[0036] Figure 8 This is a working pressure curve diagram at the bottom outlet of the electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 1 of the present invention;

[0037] Figure 9 This is a graph showing the initial working pressure of the space inside the electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 2 of the present invention;

[0038] Figure 10 This is a working pressure curve diagram at the bottom outlet of the electrically activated non-pressure storage liquid-based explosion suppression bottle in Example 2 of the present invention;

[0039] Among them: 1-bottle body, 2-liquid fire extinguishing agent, 3-fire extinguishing agent drive assembly, 4-main bursting disc, 6-sputtering nozzle, 5-fixed base, 301-flange, 302-squib base, 303-short-circuit ring, 304-squib, 305-squib sealing ring, 306-center tube, 307-piston rod, 307-1-piston, 308-piston sealing ring, 309-vibration damping spring, 310-combustion chamber, 311-gas generating powder, 312-ignition cartridge, 313-ignition powder; 51-U-bolt, 52-flange nut, 53-support, 314-jet tube, 315-bursting disc pressure cap, 316-side bursting disc. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Example 1

[0042] An electrically activated non-pressure storage liquid-based explosion suppression bottle, the structure of which is as follows Figure 1 As shown, it includes a bottle body 1, a liquid fire extinguishing agent 2, a fire extinguishing agent driving assembly 3, a main bursting disc 4, a splash nozzle 6 and a fixed base 5;

[0043] The functions and interconnection relationships of each part are as follows:

[0044] The bottle body 1 and the primary bursting disc 4 provided at the bottom thereof constitute a bottle body, and the bottle body is used to contain the liquid fire extinguishing agent 2 and to house the fire extinguishing agent driving assembly 3;

[0045] The fire extinguishing agent driving assembly 3 is arranged inside the mouth of the bottle body 1 and is used to destroy the main bursting disc 4 through the driving force of its action to form an initial overflow channel for the liquid fire extinguishing agent 2;

[0046] The sputtering nozzle 6 is connected to the main bursting disc 4 and is used to atomize and spray the liquid fire extinguishing agent 2 overflowing from the main bursting disc 4;

[0047] The fixing base 5 is used to fix the bottle body.

[0048] The core of the device is the fire extinguishing agent drive assembly 3: the fire extinguishing agent drive assembly 3 includes a fixing part, an electric starter, a gas generating part and an action part; the fixing part is used to fix the fire extinguishing agent drive assembly 3 to the inner side of the mouth of the bottle body 1; the electric starter is used to generate an electric starting signal, including an electric squib 304, and the electric squib 304 is used to start the fire extinguishing agent drive assembly 3; the gas generating part is used to generate gas to drive the action part to move and pressurize the liquid fire extinguishing agent 2, and the gas generating part includes a gas generating agent 311; the action part directly destroys the main bursting disc 4 or generates a driving force to destroy the main bursting disc 4 under the action of the gas generated by the gas generating agent 311. Its specific structure is as follows Figure 2 As shown:

[0049] The actuating member is arranged below the combustion chamber 310 and is connected to the combustion chamber 310 through a through hole below the combustion chamber 310; the actuating member moves downward along the inner wall of the central tube 306 under the push of the gas in the combustion chamber 310, and the specific structure includes a piston rod 307, a piston sealing ring 308 and an anti-vibration spring 309; the piston rod 307 is a T-shaped structure, the upper cross bar is connected to the combustion chamber 310, the lower vertical bar passes through the anti-vibration spring 309 and the bottom end is 3-4mm away from the main bursting piece 4; the piston sealing ring 308 is arranged on the outer periphery of the piston rod 307, for achieving sealing between the piston rod 307 and the inner wall of the central tube 306; the anti-vibration spring 309 is arranged at the lower part of the piston rod 307, for preventing the piston rod 307 from being dislocated under a vibration environment; the head of the piston rod is spherical. A first pressure relief hole 317 is provided on the wall of the central tube 306 at the lower part of the actuating member. When the actuating member moves to a position below the first pressure relief hole 317, the first pressure relief hole 317 forms an escape channel for the gas generated by the combustion of the gas generating agent 311 to increase the pressure of the liquid fire extinguishing agent 2 in the bottle. The side wall of the combustion chamber 310 is provided with multiple rows of evenly distributed second pressure relief holes. The second pressure relief holes are used to allow part of the gas generated by the combustion of the gas generating agent 311 to escape to between the central tube 306 and the actuating member. When the actuating member moves to a position below the first pressure relief hole 317, the liquid fire extinguishing agent 2 in the bottle is also pressurized.

[0050] The other parts of the fire extinguishing agent driving assembly 3 are as follows:

[0051] The fixing parts include screws and a flange 301: the flange 301 fixes the fire extinguishing agent driving assembly 3 in the central tube 306 inside the mouth of the bottle body 1 by screws, and the joint between the bottle body 1, the flange 301 and the central tube 306 forms a seal;

[0052] The electric starter is provided at the center position of the flange 301; the electric starter also includes an electric squib base 302, a short-circuit ring 303, an electric squib sealing ring 305, an ignition powder box 312, and ignition powder 313; the electric squib base 302 is used to fix the electric squib 304, and the electric squib sealing ring 305 is provided between the inner edge of the flange 301 and the outer edge of the electric squib base 302 to seal the connection between the flange 301 and the electric squib base 302; the ignition powder box 312 containing the ignition powder 313 is sealed and connected to the bottom of the electric squib base 302; the charge amount of the electric squib 304 is 45 to 60 mg, and the starting current is not less than 1.0 A.

[0053] The ignition powder 313 is one or more of black powder, a mixture of boron and potassium nitrate, and a polymer of magnesium and polytetrafluoroethylene, with a charge of 6 to 10 g; the screws are M8 hexagon socket screws, and the number is 8.

[0054] The gas generating component also includes a combustion chamber 310, and the combustion chamber 310 and the gas generating powder 311 contained therein are arranged in the space between the periphery of the ignition cartridge 312 and the central tube 306; the gas generating powder is a composite solid propellant, including an adhesive, a curing agent, an oxidizing agent and a cooling agent; the adhesive includes hydroxyl-terminated polybutadiene and / or carboxyl-terminated polybutadiene, with a content of 10% to 40% by mass; the curing agent is toluene diisocyanate and / or isophorone diisocyanate, with a content of 0.5% to 5% by mass; the oxidizing agent is ammonium perchlorate and / or ammonium nitrate, with a content of 20% to 60% by mass; and the cooling agent is azodicarbonamide, with a content of 20% to 60% by mass.

[0055] The composite solid propellant has a combustion temperature not exceeding 1400K; a burning rate not less than 34 mm / s; a charge weight of 30 to 100 g; and a total outer surface area of ​​the charge, i.e., an initial burning surface area not less than 50,000 mm. 2 The gas generation volume is 13-26 mol / kg and the charge amount is 30-50g.

[0056] Other specific designs include:

[0057] The liquid fire extinguishing agent 2 is one of 1,1,1,2,2,4,5,5,5-nonafluoro-4-trifluoromethyl-3-pentanone and 2-bromo-3,3,3-trifluoropropene or a mixture of the two. The loading amount of the liquid fire extinguishing agent 2 accounts for 85-95% of the volume of the bottle, and the filling amount is 4-10 kg.

[0058] The main bursting disc 4 is a positive arched grooved bursting disc, wherein the groove is a cross-shaped groove with a diameter of 65 mm and an activation pressure of 0.5 to 2 MPa.

[0059] The structure of the fixed base 5 is as follows Figure 7As shown, it includes a U-shaped bolt 51, a flange nut 52 and a support 53; the U-shaped bolt 51 is fixed to the support 53 through the flange nut 52, and the arc shape of the support 53 and the U-shaped bolt 51 form a ring shape consistent with the bottom shape of the bottle body 1 to surround and fix the bottom of the bottle body 1.

[0060] The sputtering nozzle 6 is provided with a cone surface inside to quickly atomize and spray the fire extinguishing agent.

[0061] The working process of the electrically started non-pressure storage liquid-based explosion suppression bottle is as follows: the electric signal starts the gas generator of the electric squib 304, and the gas generator starts within 2ms, generating a large amount of high-pressure gas, pushing the piston rod located below it to move, and opening the main bursting piece at the bottom of the bottle body. As the piston rod 307 moves downward, after it moves through the first pressure relief hole at the bottom of the central tube, the seal between the piston rod 307 and the central tube fails, and the gas generated by the gas-generating agent inside the central tube is ejected from the first pressure relief hole, synchronously pressurizing the liquid fire extinguishing agent in the bottle body, and then the internal liquid fire extinguishing agent is rapidly ejected under the push of the high-pressure gas generated by the generator. When it hits the sputtering nozzle located at the bottom of the bottle body, it is quickly atomized and diffused to the designated area, thereby achieving the purpose of explosion suppression and fire extinguishing.

[0062] Figure 8 This is a graph of the operating pressure at the bottom outlet of the electrically activated, non-pressure-storage, liquid-based explosion suppression bottle in this embodiment. The pressure sensor is located directly below the bottom outlet on the outside of the bottle and outside the bursting disc, directly exposed to the atmosphere. When the pressure is significantly higher than atmospheric pressure, it indicates the release of fire extinguishing agent, representing the activation time of the explosion suppression bottle. As can be seen from the graph, the activation time (from activation signal input to fire extinguishing agent discharge) is 1.5ms, significantly ahead of current competing products (5-7ms).

[0063] Example 2

[0064] An electrically activated non-pressure storage liquid-based explosion suppression bottle, the structure of which is as follows Figure 3 As shown, the structure of the embodiment 1 is different from that of the action member in the fire extinguishing agent driving assembly 3. The structure of the fire extinguishing agent driving assembly 3 and its action member is as shown in FIG. Figure 4 As shown, it can be seen that its moving parts include a piston 307-1, a piston sealing ring 308 and an anti-vibration spring 309; the piston 307-1 is an inverted U-shaped structure, the upper part is connected to the combustion chamber 310, and the lower part is connected to the anti-vibration spring 309; the piston sealing ring 308 is arranged on the outer periphery of the piston 307-1, and is used to achieve sealing between the piston rod 307 and the inner wall of the center tube 306; the anti-vibration spring 309 is used to prevent the piston rod (307) from being displaced under a vibrating environment.

[0065] As in Example 1, a first pressure relief hole 317 is provided on the wall of the central tube 306 below the actuating member. When the actuating member moves to a position below the first pressure relief hole 317, the first pressure relief hole 317 forms an escape channel for the gas generated by the combustion of the gas generating agent 311, thereby pressurizing the liquid fire extinguishing agent 2 in the bottle. The side wall of the combustion chamber 310 is provided with multiple rows of evenly distributed second pressure relief holes. The second pressure relief holes are used to allow part of the gas generated by the combustion of the gas generating agent 311 to escape between the central tube 306 and the actuating member, thereby pressurizing the liquid fire extinguishing agent 2 in the bottle when the actuating member moves to a position below the first pressure relief hole 317.

[0066] The working process of the electrically started non-pressure storage liquid-based explosion suppression bottle is as follows: the electric signal starts the gas generator, which starts within 2ms, generating a large amount of high-pressure gas, pushing the piston located below it to move, and the piston pushes the lower liquid fire extinguishing agent, opening the main bursting disc at the bottom of the bottle body. Then the internal liquid fire extinguishing agent is rapidly ejected under the push of the high-pressure gas generated by the generator. When it hits the sputtering nozzle located at the bottom of the bottle body, it quickly atomizes and diffuses to the designated area, immediately achieving the purpose of explosion suppression and fire extinguishing.

[0067] Figure 9 This is a graph of the operating pressure at the bottom outlet of the electrically activated, non-pressure-storage, liquid-based explosion suppression bottle of this embodiment. The pressure sensor is located directly below the bottom outlet on the outside of the bottle and outside the bursting disc, directly exposed to the atmosphere. When the pressure is significantly higher than atmospheric pressure, it indicates the release of fire extinguishing agent, representing the activation time of the explosion suppression bottle. As can be seen from the graph, the activation time (from activation signal input to fire extinguishing agent discharge) is 2.5ms, significantly exceeding the 5-7ms of current competing products.

[0068] Example 3

[0069] An electrically activated non-pressure storage liquid-based explosion suppression bottle, the structure of which is as follows Figure 5 As shown, the structure of the embodiment 1 is different from that of the fire extinguishing agent driving component 3 and its actuating member. The structure of the fire extinguishing agent driving component 3 is as shown in FIG. Figure 6 As shown, it can be seen that the actuating member 11 includes a piston 307-1, a piston sealing ring 308, an anti-vibration spring 309, a jet tube 314, a bursting disc pressure cap 315, and a side bursting disc 316; the side bursting disc 316 and the bursting disc pressure cap 315, the piston 307-1, and the anti-vibration spring 309 are sequentially arranged below the combustion chamber in the central tube 306, and the jet tube 314 is connected to the bottom of the central tube 306; the side bursting disc 316 is arranged on the side wall of the central tube 306, and its opening pressure is greater than the opening pressure of the main bursting disc 4; the piston 307-1 has an H-shaped structure, and its two sides are sealed to the inner side of the central tube 306.

[0070] The side bursting disc 316 is preferably a positive dome-shaped, grooved disc with a cross-shaped groove, and has an opening pressure of 5-10 MPa. This means that its opening pressure is greater than that of the main bursting disc 4. After the main bursting disc 4 ruptures, the high pressure generated by the combustion of the gas generating agent further opens the side bursting disc 316, allowing the gas to enter the bottle and increase its pressure.

[0071] The working process of this embodiment is as follows: an electrical signal activates the gas generator, which starts within 2ms and generates a large amount of high-pressure gas, pushing the piston 3071-1 located thereunder to move. The piston 307-1 squeezes the liquid fire extinguishing agent located inside the central tube 306 and the jet tube 314 (compared to Examples 1 and 2, the jet tube 314 and its interior in this embodiment are not sealed with the fire extinguishing agent, and the liquid fire extinguishing agent fills the jet tube 314 before activation). A hydraulic device is formed to eject the liquid fire extinguishing agent at a high speed. Under the pressure of the high-speed liquid fire extinguishing agent, the main bursting disc at the bottom of the bottle is opened. When the pressure in the central tube 306 reaches the opening pressure of the side bursting disc 316, the side bursting disc 316 opens, and the gas generated by the gas generating agent enters the bottle, rapidly increasing the pressure inside the bottle. The fire extinguishing agent in the bottle is ejected under the push of the high-pressure gas. When it hits the sputtering nozzle located at the bottom of the bottle, it is quickly atomized and diffused into the designated area, thereby achieving the purpose of explosion suppression and fire extinguishing.

[0072] Figure 10 This is a graph showing the operating pressure at the bottom outlet of the electrically activated, non-storage, liquid-based explosion suppression bottle of this embodiment. The pressure sensor is located directly below the bottom outlet on the outside of the bottle. A rise in pressure indicates the release of fire extinguishing agent, so the first inflection point of the pressure curve represents the activation time of the explosion suppression bottle. As can be seen from the graph, the activation time (from activation signal input to fire extinguishing agent discharge) is 3ms, significantly exceeding the 5-7ms of current competing products.

[0073] While various embodiments of the present invention have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limiting of the disclosed embodiments. Numerous modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Therefore, the scope of the present invention shall be determined by the scope of the claims.

Claims

1. An electrically activated non-pressure storage liquid-based explosion suppression bottle, characterized in that: It comprises a bottle body (1), a liquid fire extinguishing agent (2), a fire extinguishing agent driving assembly (3), a main bursting disc (4) and a splash nozzle (6); The bottle body (1) and the primary bursting disc (4) arranged at the bottom thereof constitute a bottle body, and the bottle body is used to contain liquid fire extinguishing agent (2) and to house a fire extinguishing agent driving assembly (3); The fire extinguishing agent driving assembly (3) is arranged inside the mouth of the bottle body (1) and is used to destroy the main bursting disc (4) through the driving force of its action to form an initial overflow channel for the liquid fire extinguishing agent (2); The sputtering nozzle (6) is connected to the main bursting disc (4) and is used to atomize and spray the liquid fire extinguishing agent (2) overflowing from the main bursting disc (4); The fire extinguishing agent driving assembly (3) comprises a fixing member, an electric starter, a gas generating member and an action member; the fixing member is used to fix the fire extinguishing agent driving assembly (3) on the inner side of the mouth of the bottle body (1); the electric starter is used to generate an electric starting signal and comprises an electric squib (304), and the electric squib (304) is used to start the fire extinguishing agent driving assembly (3); the gas generating member is used to generate gas to drive the action member to move and pressurize the liquid fire extinguishing agent (2), and the gas generating member comprises a gas generating agent (311); the action member directly destroys the main bursting disc (4) or generates a driving force to destroy the main bursting disc (4) under the action of the gas generated by the gas generating agent (311); The liquid fire extinguishing agent (2) is one of 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and 2-bromo-3,3,3-trifluoropropene or a mixture of the two, the loading amount of the liquid fire extinguishing agent (2) accounts for 85-95% of the volume of the bottle, and the filling amount is 0.5-10 kg; The fixing parts of the fire extinguishing agent driving assembly (3) include screws and a flange (301); a central tube (306) is provided inside the mouth of the bottle body (1); The flange (301) fixes the fire extinguishing agent driving assembly (3) in the central tube (306) by screws, and the joint between the bottle body (1), the flange (301) and the central tube (306) is sealed by a sealing ring; the sealing ring is made of EPDM rubber; The electric starter is arranged at the center of the flange (301); the electric starter also includes a squib base (302), a short-circuit ring (303), a squib sealing ring (305), an ignition cartridge (312), and ignition powder (313); The squib base (302) is used to fix the squib (304), and the squib sealing ring (305) is arranged between the inner edge of the flange (301) and the outer edge of the squib base (302) to seal the connection between the flange (301) and the squib base (302); An ignition powder box (312) containing ignition powder (313) is sealed and connected below the squib base (302); The charge of the electric squib (304) is 30-300 mg, and the starting current is not less than 1.0 A; The ignition powder (313) is one or more of black powder, a mixture of boron and potassium nitrate, and a polymer of magnesium and polytetrafluoroethylene, and the charge amount is 2 to 20 g; The gas generating member further comprises a combustion chamber (310), wherein the combustion chamber (310) and the gas generating powder (311) contained therein are arranged in the space between the periphery of the ignition powder box (312) and the central tube (306); The gas generating agent is a composite solid propellant, the combustion temperature of which does not exceed 1400K; the burning rate is not less than 10mm / s; the sum of the outer surface area of ​​the charge, i.e. the initial burning surface, is not less than 20000mm 2 , gas generation volume is 13~26mol / kg, charge amount is 10~100g; The actuating member is arranged below the combustion chamber (310) and is in communication with the combustion chamber (310) through a through hole below the combustion chamber (310); the actuating member moves downward along the inner wall of the central tube (306) under the push of the gas in the combustion chamber (310); The main bursting disc (4) is a positive arched grooved bursting disc, the groove is a cross-shaped groove, the diameter of the cross-shaped groove is at least 40 mm, and the opening pressure of the main bursting disc (4) is 0.2-2 MPa; The electrically activated non-pressure storage liquid-based explosion suppression bottle further comprises a fixed base (5), which is used to fix the bottle body and comprises a U-shaped bolt (51), a flange nut (52) and a support (53); The U-shaped bolt (51) is fixed to the support (53) via the flange nut (52); the arc shape of the support (53) and the U-shaped bolt (61) form a ring shape consistent with the shape of the top, middle or bottom of the bottle body (1), so as to surround and fix the top, bottom or middle of the bottle body (1); The sputtering nozzle (6) is provided with a cone surface inside to spray out the fire extinguishing agent in atomized form; The gas generating agent (311) includes an adhesive, a curing agent, an oxidizing agent and a cooling agent; The adhesive comprises hydroxyl-terminated polybutadiene and / or carboxyl-terminated polybutadiene, with a content of 10% to 40% by mass; The curing agent is toluene diisocyanate and / or isophorone diisocyanate, and the content is 0.5% to 5% by mass; The oxidant is ammonium perchlorate and / or ammonium nitrate, with a content of 20% to 60% by mass; The cooling agent is azodicarbonamide, and its content is 20% to 60% by mass.

2. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 1, characterized in that: The actuating member comprises a piston rod (307), a piston sealing ring (308) and an anti-vibration spring (309); The piston rod (307) is a T-shaped structure, the upper horizontal rod is connected to the combustion chamber (310), the lower vertical rod passes through the vibration-proof spring (309), and the bottom end is 0.5-5 mm away from the main bursting disc (4); The piston sealing ring (308) is arranged on the outer periphery of the piston rod (307) and is used to achieve sealing between the piston rod (307) and the inner wall of the central tube (306); The anti-vibration spring (309) is arranged at the lower part of the piston rod (307) to prevent the piston rod (307) from being dislocated under a vibration environment; The head of the piston rod is spherical.

3. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 1, characterized in that: The actuating member comprises a piston (307-1), a piston sealing ring (308) and an anti-vibration spring (309); The piston (307-1) is an inverted U-shaped structure, with the upper portion connected to the combustion chamber (310) and the lower portion connected to the vibration-stopping spring (309); The piston sealing ring (308) is arranged on the outer periphery of the piston (307-1) and is used to achieve sealing between the piston (307-1) and the inner wall of the central tube (306); The anti-vibration spring (309) is used to prevent the piston (307-1) from being dislocated in a vibrating environment.

4. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 2 or 3, characterized in that: A first pressure relief hole (317) is provided on the wall of the central tube (306) below the actuating member. When the actuating member moves to a position below the first pressure relief hole (317), the first pressure relief hole (317) forms an escape channel for gas generated by combustion of the gas generating agent (311) to pressurize the liquid fire extinguishing agent (2) in the bottle.

5. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 4, characterized in that: The side wall of the combustion chamber (310) is provided with multiple rows of evenly distributed second pressure relief holes, which are used to allow part of the gas generated by the combustion of the gas generating agent (311) to escape between the central tube (306) and the actuating member, and when the actuating member moves below the position of the first pressure relief hole (317), the liquid fire extinguishing agent (2) in the bottle is pressurized.

6. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 1, characterized in that: The actuating parts include a piston (307-1), a piston sealing ring (308), a vibration-stopping spring (309), a jet tube (314), a bursting disc pressure cap (315), and a side bursting disc (316); The side bursting disc (316), the bursting disc pressure cap (315), the piston (307-1), and the vibration-stopping spring (309) are sequentially arranged below the combustion chamber in the central tube (306), and the jet tube (314) is connected to the bottom of the central tube (306); The side bursting disc (316) is arranged on the side wall of the central tube (306), and its opening pressure is greater than the opening pressure of the main bursting disc (4); The piston (307-1) is an H-shaped structure, and both sides thereof are sealedly connected to the inner side of the central tube (306).

7. The electrically activated non-pressure storage liquid-based explosion suppression bottle according to claim 6, characterized in that: The side bursting disc (316) is a positive arched grooved bursting disc, the groove is a cross-shaped groove, and the opening pressure is 1 to 10 MPa.

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