KR20020042784A - LPG omitted - Google Patents

Abstract

PURPOSE: A water spray pattern forming apparatus, a sprinkle water pattern forming apparatus, and an automatic anti-blast apparatus for an LPG tank lorry using a heat sensitive opened valve are provided to enable normal fire detection and water sprinkle action to be successively performed even if an obstacle is present in a sprinkle position. CONSTITUTION: The heat sensitive valve, used in a water spray pattern forming apparatus, a sprinkle water pattern forming apparatus, and an automatic anti-blast apparatus for an LPG tank lorry for ensuring the successful actuation of them consists of a valve body(113), a disk sheet(117), a gasket(110), a cover(109), an O-ring(111), a spring(108), a disk(115), a disk packing(116), a valve base(112), a cap(107), a silicone O-ring(122), a back packing(114), a frame(106), a fixing screw(101), and a heat sensing part.

Description

Thermo-opening valve, water spray pattern forming device, water spray pattern forming device, and LPG tank lorry automatic explosion prevention device {omitted}

※ The technical field to which the present invention belongs is as follows.

The present invention relates to a thermally open valve and a spraying pattern forming apparatus, a water distribution pattern forming apparatus and an LPG tank lorry automatic explosion prevention device using the same.

Thermally open valves are heat- or pressure-sensitive valves that are open and have thermally-sensitive thermally-opening valves and pressure- and thermally-sensitive thermally-opening valves and thermally-sensitive thermally-opening valves are fusible-link thermally-opening valves. The thermally open valve with pressure and heat sensing functions is called a glass bulb thermally open valve.

The thermally open valve can be used for the same purpose as the fusible valve. In the glass bulb type thermally open valve, the valve fully performs the functions of the fusible valve and the rupture plate. In addition, the sprinkling pattern or water spray pattern forming apparatus using a thermally open valve is used in the sprinkler fire extinguishing system using a closed sprinkler head to form a sprinkling pattern such as a pipe, a hanger, a duct, a lighting fixture, and a beam at the installation position of the closed sprinkler head. If there are obstacles that interfere, normal fire detection and normal sprinkling pattern should be formed and electrical equipment related devices such as electric room, power generation room, substation room, battery room, communication equipment room, computer room, etc. are installed under the closed sprinkler head installation location. If a sprinkler head is not to be sprayed using a closed sprinkler head, such as a place or an oil storage facility, normal fire detection and formation of a normal water spray pattern should be achieved. LPG tank lorry automatic explosion prevention device using a thermally open valve is to prevent the LPG tank lorry from automatically exploding when the tank lorry is in flames due to fire during operation of the tank lorry or LPG filling station.

※ The prior art related to the thermosensitive valve is as follows.

<Closed sprinkler head>

Closed sprinkler head is used in sprinkler fire extinguishing equipment, and it means sprinkler head which the nozzle is opened by automatically destroying, dissolving or releasing the heating element at a certain temperature. However, when it reaches a certain temperature by heat, it breaks itself and melts away from the head, so that the waterproof hole is opened to operate the sprinkler head. Fuzzy Blink refers to the part which is fused with a fusible metal or Glass-bulbrain refers to the assembly of liquid in a glass sphere in a heat-sensitive body.

<Before use>

Soluble pot is a plug filled with low alloy made of lead, tin, antimony, cadmium, bismuth, etc. in the center. It is a kind of safety device attached to boiler or freezer. When the surface is overheated, when the temperature of the condenser or receiver is abnormally raised, the fusible plug is melted and water, steam, and refrigerant are spilled to prevent the container from being destroyed. If the refrigerant gas is a flammable gas or a toxic gas, it is not possible to use a soluble plate or a rupture plate in a refrigeration system, and it is installed and used in a container such as acetylene, chlorine or ethylene oxide, and the melting temperature of the alloy depends on the type of gas. This temperature corresponds to a pressure no greater than 0.8 times the pressure resistance test pressure.

<Rupture board>

A bursting plate is a safety device installed in a high-pressure container. It is a device that bursts thin plates when the internal pressure rises abnormally and rapidly releases internal pressure. The purpose of using a bursting disc is to install it in the following cases where it is very unlikely to work. Similar to deflagration or abnormal reaction, when the pressure rise is abrupt, it is inappropriate to install the spring type safety valve according to the properties of the reaction product, the inner material is mixed with liquid and powder or the spring is handled due to the handling of relatively viscous material. In case of deposits or dust deposits that interfere with the safety relief valve operation, a spring safety relief valve is provided. In addition, safety valves and rupture plates are provided in double places in the place where handling and storing pressure fluctuations and severe corrosive materials and handling and storing toxic substances.

<Spring type safety valve>

The spring-type safety valve is pushed and closed by the valve seat by the spring force. However, when the steam pressure applied to the valve body is greater than the spring force, the spring-loaded safety valve is an automatic pressure release device that maintains safety by opening the steam. The discharge pressure can be adjusted by adjusting the spring pressure, and since it is sure to operate, it is most widely used as a safety valve.

<Storage tank explosion prevention system in case of LPG filling station fire>

The fluid storage tank explosion prevention method in the case of fire and the fluid storage tank explosion prevention method in the case of a fire are different because the internal pressure rising speed of the fluid storage tank rapidly rises in a fire.

Referring to the schematic diagram of the storage tank explosion prevention system when the LPG charging station fire of Figure 18 as follows.

LPG filling station fire storage tank explosion prevention system is to open the second storage tank protection pipe valve 813 in the case of a fire in or around the flammable gas storage tank 808 through the storage tank protective pipe 804 combustible gas To the expansion tank 812 and gradually open the control valve 815 after ignition to the combustor ignition torch 802 using the propane vessel 817 to combust the combustible gas through the discharge pipe 816. When the fluid in the storage tank 808 is a flammable liquefied gas by combustion in the atmosphere, the water vapor in the atmosphere is condensed and frozen in the frost state due to the absorption of latent heat of liquefied gas. Attached to the surface of the tank 808 to prevent a decrease in tensile strength due to heating by the flame 806 of the storage tank 808, and inside the storage tank 808 through the discharge pipe 816 to the atmosphere and storage tank (808) Equalization Low evaporation temperature and latent heat of evaporation of the combustible gas approaching the atmospheric pressure can be obtained, so that the temperature and pressure drop sharply, and the flame 806 extinguishes as the flame 806 outside the storage tank 808 rapidly decreases. It is possible to prevent the explosion of the storage tank 808, and if the fluid in the storage tank 808 is a combustible compressed gas such as compressed natural gas, the pressure between the atmosphere and the storage tank 808 through the discharge pipe 816 As the operation proceeds, the internal pressure of the storage tank 808 drops sharply, which causes the flame 806 to extinguish as the flame 806 outside the storage tank 808 rapidly decreases, causing the storage tank 808 to explode. It can be prevented and digested.

In other words, storage tank explosion prevention system in case of LPG filling station fire converts gas filling system into refrigeration system. When the vapor pressure of the propane storage tank is equal to the standard atmospheric pressure, the temperature at the propane liquid level approaches -42.6 [℃], and when the propane evaporates, it absorbs 101 [kcal / kgf] of the latent heat of evaporation, thereby cooling the propane storage tank. The internal pressure drops sharply and the flame is extinguished to prevent and extinguish the explosion of the propane storage tank.

When the LPG storage tank is fired and the LPG filling station fires, the LPG storage tank is heated by water when water is sprayed on other parts of the LPG storage tank except the flame contacted part. Care should be taken as the leakage of steam increases and the size of the flame increases.

LPG Filling Station Fire Tanks Another function of the explosion protection system is to combust the combustor using the propane vessel 817 and opening the second liquid pipe valve 814 in the event of a fire in or near the flammable gas storage tank 808. After ignition to the torch 802, the control valve 815 is gradually opened, and combustible gas is combusted in the combustor 801 through the discharge pipe 816 to be discharged into the atmosphere, so that the equalization action between the atmosphere and the expansion tank 812 proceeds. The internal pressure of the expansion tank 812 is close to the atmospheric pressure, and in conjunction with this, the liquid combustible gas in the storage tank 808 flows into the siphon pipe 807 by the vapor pressure of the gas phase part and expands through the liquid pipe 803. The pressure regulator 811 which is rapidly introduced into the tank 812, wherein the container valve 818 of the N 2 vessel 810 is opened to a pressure resistance test pressure of the storage tank 808 equal to or lower than the saturation pressure corresponding to the temperature of the combustible gas. Through And when ejecting the N ₂ gas toward the top of the inside the storage tank 808 in the storage tank 808 of the inner bottom-pipe type injection nozzle 809 via a main pipe 805 for ejecting N ₂ of the storage tank (808) When the gaseous part pressure rises, the liquid flammable gas stops evaporating, and when the mixed vapor of the combustible gas and N ₂ is discharged to the outside of the flammable gas storage tank 808, only N ₂ vapor exists in the gaseous part of the storage tank 808. The flame 806 is extinguished as the flame 806 outside the storage tank 808 rapidly decreases due to N ₂ ejection at the flammable gas leakage part of the storage tank 808, and the flame tank 808 disappears. The internal liquid flammable gas rapidly enters the expansion tank 812, and when the inflow is completed, the N ₂ gas is introduced into the expansion tank 812 and the N ₂ gas and the combustible gas are mixed in the combustor 801. Steam is discharged, the incomplete combustion phenomenon is severe in the combustor 801 Is generated and blocks the control valve 815. By doing so, it is possible to prevent the explosion of the storage tank 808, and to extinguish.

And the basic theory to promote the understanding of storage tank explosion protection system in case of LPG filling station fire is as follows.

Referring to the basic theory explanatory diagram of the storage tank explosion prevention system in the case of LPG charging station fire of Figure 17 as follows.

Figure 17 shows the torso removed from the top of the disposable gas lighter. Before the parts of the upper gas burner are removed, the left chamber 701 and the right chamber 702 are filled with LPG liquid.

However, after removing the upper part of the gas writer, the LPG liquid of the left chamber 701 is released into the atmosphere within 2 seconds through the siphon tube 703 so that only the LPG vapor is present in the left chamber 704 and the upper portion of the LPG liquid of the right chamber 705 is removed. As the falling hole 706 is formed and a portion of the liquid is evaporated at the liquid stage, the latent liquid is absorbed from the remaining liquid, and the remaining liquid in the liquid stage is cooled to a low temperature to slide down to the center of the falling hole 706 and the falling hole 706. At the center of the bottom of the lower chamber 705 is lowered.

The LPG can visually confirm that the cooling liquid lowering part 707 is formed by lowering the liquid cooled to the lower end of the lower chamber 705 at the center of the lowering hole 706 when the body of the colorless transparent liquid or gas lighter is observed.

It is estimated that the liquid having low light transmittance of the cooled liquid and the uncooled liquid of the LPG liquid is small and can be visually confirmed. The ignition hole 706 and the coolant lowering part 707 when igniting the gas writer in a steady state Cannot be formed.

In addition, when the vaporization of LPG occurs in the right chamber 705, water vapor in the atmosphere condenses on the outer surface of the gas lighter body, forming water droplets. This phenomenon occurs most strongly in the gas lighter body adjacent to the falling hole 706. When the gas lighter body is touched with a finger, the part contacting the falling hole 706 has the lowest temperature, the gas phase part 711 has a high temperature, the liquid lower part also has a high temperature, and as time passes, the temperature of the liquid lower part also appears low. Evaporation capacity is reduced. In addition, if a piece of thin and light paper such as toilet paper is placed on the top of the siphon tube 708 immediately after removing the parts on the top of the gas lighter, the pieces of paper do not even move.

This can also be seen that the pressure of the LPG vapor inside the gas writer is in equilibrium with atmospheric pressure.

The colorless and transparent liquid around the coolant lowering part 707 is not visually confirmed, but the liquid 709 in contact with the coolant lowering part 707 is cooled down by the coolant lowering part 707 and lowered from the gas lighter body and the atmosphere. The liquid 710 in contact with the gas-lighter body, which is easily absorbed by heat, can be estimated to be heated and rise to the liquid level, and the arrows shown in 709 and 710 indicate the motion paths of fine materials having a higher specific gravity than the LPG liquid. It can be checked with the naked eye.

In addition, LPG containers consume 800 [kg] of propane per month, use two 50 [kg] containers and two 50 [kg] containers in a restaurant with a storage capacity of 200 [kg]. When using LPG, water vapor in the LPG container condenses, causing water droplets to form frost and frost to ice. The latent heat of evaporation absorbed when LPG evaporates inside the container can be absorbed only from the LPG balance and the atmosphere. When the LPG balance is quenched, the amount of heat absorbed from the atmosphere is small and the evaporation capacity of the LPG decreases rapidly. When disappearing and butane is used, LPG's evaporation capacity decreases faster than propane.

The cause is that butane has a boiling point of -0.38 [° C.], propane of -42.6 [° C.], latent heat of evaporation of 15.6 [° C.] of 84.78 [kcal / kgf], and butane of 90.01 [kcal / kgf]. In other words, the boiling point of butane is higher than that of propane and the latent heat of evaporation is larger than that of propane.

The heat that can be absorbed by the butane in the LPG vessel, which has reached its boiling point and is close to atmospheric pressure and equilibrium, only becomes heat in the atmosphere. However, air is a very difficult material to transfer heat, and it delivers only about one-tenth as much as water. In addition, the air transfers rapidly because it is rapidly cooled when it comes into contact with the LPG container. The air temperature on the LPG container surface is much lower than the air temperature in the air, so the difference in temperature between butane inside the container and the air temperature on the surface of the container is small. The amount of butane vapor generated is only a small amount so that it can be said that evaporation of butane was stopped because of this defect.

In case LPG vapor is released to the atmosphere by fully opening the valve of LPG container, the discharge pressure is high and the discharge amount is large, but after a while, the discharge pressure drops and the discharge amount decreases rapidly. Occurs badly.

Liquid-vapor equilibrium is not affected by the amount of liquid and the vapor pressure of the liquid is independent of the volume of the vessel as long as there is a liquid that can equilibrate. In a 20 [kg] propane container of [kcal / cm 2], when 10 [kg] of steam was used for 2 hours, the propane vapor pressure dropped sharply and the vapor pressure dropped even after 12 hours after the use of propane was stopped. That is, in the case of propane supplied to a general consumer, the larger the amount of liquid in the same volume of propane container, the higher the propane vapor pressure. Therefore, the above problems arise from practical application of the theory of the conventional physicochemical system that the pressure represented by steam when liquid and vapor are present together is independent of the volume of the container.

If the vapor pressure of liquefied butane of 30 [℃] is 2.3 [kgf / cm2] in the LPG container at atmospheric temperature 30 [℃] and the butane vapor is supplied to the LPG container to the compressor to stop the compressor at 15 [kgf / cm2]. Butane vapor condenses to release latent heat of condensation, increasing the temperature of the LPG vessel, and releasing latent heat of condensation into the atmosphere, thereby rapidly reducing butane vapor pressure and increasing the volume of butane liquid.

However, after a while, it becomes dynamic equilibrium but the butane vapor pressure is not 2.3 [kgf / ㎠], but it is maintained at 7 [kgf / ㎠] or more and when liquid butane is released from the LPG container, the steam part expands and the steam pressure is 2.3 [ kgf / cm 2].

When propane or butane in the gaseous state is pressured at 8 [deg.] At 15 [deg.] C and butane at 2 [deg.] At 15 [deg.] C, it becomes liquid and becomes liquefied petroleum gas, LPG.

When the saturated vapor pressure of the propane container is 7.4 [kgf / ㎠], when the N ₂ gas is injected into the gas phase and maintained at 19 [kgf / ㎠], the spring-type safety valve of the container valve operates to mix propane and N ₂ . Steam is discharged and propane liquid cannot evaporate, so that only N ₂ gas is present in the gas phase of the propane container.

When the liquid butane is discharged from the hose to the atmosphere, if the discharge pressure is 8 [kgf / ㎠] from the 25 [mm] hose to the atmosphere of 1 [m] height from the ground, the liquid butane absorbs the heat of the atmosphere. As a result of the evaporation and rapid diffusion, liquid butane does not fall to the ground due to gravity.

However, if the liquid is discharged from the 50 [mm] hose to the ground at a discharge pressure of 2.3 [kgf / cm2], the butane evaporates the latent heat of evaporation of butane from 5 to 50 [cm] above the ground. Due to the condensation of water vapor in the atmosphere, it forms a high concentration of water vapor layer to prevent butane diffusion, and the formation of water vapor layer is less likely to occur because propane has lower latent heat of evaporation than butane, and the probability of occurrence is low in winter, even though the absolute humidity is lower than in summer. The formation of the water vapor layer is easily formed.

In the summer, when the upper part of the rear end of the 50 [mm] Lori hose is cut 100 [%] and liquid butane flows out by forming the height of 0.4 [m] at the upper part of the Lori hose, the water vapor in the air condenses and The phenomenon of forming a vapor layer does not occur and diffuses into the atmosphere.

In addition, when the liquid LPG is released to the ground, it can be seen visually that propane diffusion occurs faster than butane.

※ The problems of the prior art are as follows.

<Problems with Closed Sprinkler Heads>

Closed sprinkler heads in sprinkler fire extinguishing systems are to be capable of forming normal fire detection and normal watering patten.

However, if the sprinkler head is installed at the installation position of the sprinkler head to prevent the sprinkling pattern formation such as pipes, hangers, ducts, lighting fixtures, beams, etc. There is a problem not to install a normal sprinkler pattern to form a closed sprinkler head is a problem that does not detect the normal fire.

In addition, sprinkling in the closed sprinkler head has a problem in that water is sprayed in a raindrop shape and there is no electrical insulation and a nonflammable emulsification layer, ie, an emal zone, on the oil surface. In other words, electrical facilities such as electrical rooms, communication equipment rooms, computer rooms, etc. should be free of water, and closed sprinkler heads cannot be used in these places.

When described in detail with reference to the Figure showing the sprinkler pattern forming method in the sprinkler tube of Figure 12 as follows.

Gas, heat, and smoke are generated by the combustion of combustible materials during indoor fire.Because the high temperature combustion gas and smoke have higher temperature than the surrounding air, buoyancy is generated due to the difference in density and rises upward, spreading mushroom-wide. High temperature gas accumulates toward the ceiling and the temperature rises, and the temperature change of the ceiling and the floor during indoor fire shows a difference of 310 [℃] 10 minutes after the fire.

In the case of closed sprinkler heads, in case of fire, the closest sprinkler head closest to the fire is opened within a few seconds depending on the distance between the ceilings. For example, if the clearance between the closed sprinkler head and the ceiling is 10 [m], the initial sprinkler will open within 60 seconds, and if the clearance is 30 [cm], the closed sprinkler head will open within 2 minutes.

In the case of the closed sprinkler head 201 proximate to the beam 204, the sprinkler head 201 and 208 of the closed sprinkler head 207 and 208 proximate to the beam 205 in order to prevent the sprinkling pattern on the right side due to the beam on the right side to form the sprinkling pattern. In this case, a method of installing below the beam 205 is currently used. However, in this case, the closed sprinkler heads 206 and 209 of the high temperature part are operated quickly in the event of a fire, and the operating time of the closed sprinkler heads 207 and 208 of the low temperature part takes a long time, resulting in the injury caused by the generation of smoke. Is concerned and there is a problem that leads to the expansion of fire or failure of automatic fire extinguishing, and also when the closed sprinkler head 214 is installed on the duct 213 and the upper portion of the pipe 212. It is currently used to install the automatic drain valve 226 and the closed sprinkler head 220 in the lower portion of the duct 219 and the pipe 221 to prevent the sprinkling pattern formed by the water. . However, in this case, there is a problem that the closed sprinkler head 218 of the high temperature part operates rapidly and the operating time of the closed sprinkler head 220 of the low temperature part takes a long time.

That is, the closed sprinkler head loses the fire detection function when the closed sprinkler head is placed under the obstacle when there is an obstacle that prevents the spatter pattern formation such as a pipe, a hanger, a duct, a luminaire, and a beam. When installed on the top or side of the sprinkler pattern is interrupted to form a sprinkling pattern to form an abnormal sprinkling water does not reach, there is a problem that the performance of the sprinkler fire extinguishing equipment is reduced.

That is, when arranging the closed sprinkler head, it is a basic principle that there is no area where water is not reached. Placement methods are square, rectangular, trapezoidal, and in either case, the sprinkling can be overlapped, but there must be no rectangular area where the sprinkling cannot reach.

In addition, the closed sprinkler head has a problem that can not be used in the electric fire, oil fire to spray water in the shape of raindrops.

<Problem before use>

Before use, there is a problem in that a pipeline cannot be formed at the outlet of the fluid and there is a problem in that there is no pressure sensing function.

In an overfilled container, when exposed to high temperature, there is no pressure sensing function such as a rupture plate, a spring type safety valve, and there is a problem in that the available charge is not sufficiently melted and burst.

As shown in the attached arrangement of the safety device in the underground buried LPG storage tank of FIG. 14, when the fusible field 403 of the upper portion of the storage tank 404 operates in the event of a fire, the explosion of the adjacent LPG tank lorry is promoted. There is a problem leading to the expansion of fire in buildings adjacent to 404.

This phenomenon is because before use, it is not possible to form a conduit at the outlet of the fluid so that the fluid cannot be discharged to a safe place over a certain distance from the storage tank 404.

<Problem of rupture board>

Rupture plate has a problem that there is no heat detection function.

Tanks that store flammable substances underground do not have a heat sensing function such as soluble before fire does not work.

As shown in the attached arrangement of the safety device in the underground buried LPG storage tank of FIG. 14, the spring type safety valve 401 does not operate when a fire occurs on the upper portion of the storage tank 404. For this reason, the bursting plate 402 having a higher set pressure than the spring type safety valve is inoperative in the event of a fire. When the fire occurs, the spring type safety valve 401 and the rupture plate 402 do not operate and the storage tank 404 does not detonate, and there is no problem, and the internal pressure of the storage tank 404 cannot be lowered. 404 can not reduce the flame generated in the upper there is a problem that leads to the expansion of the fire of the tank lorry and adjacent buildings adjacent to the storage tank 404.

In addition, the rupture plate has a problem that a malfunction of the gas spontaneous operation occurs frequently.

<Problems with Spring Safety Valves>

There are many leaks in the valve seat, but there are many problems that the user does not know, and there is a problem that the mass flow rate of gas discharge is small due to the structure of the spring type safety valve, and the tensile strength of the storage tank due to the flame in case of fire. There is a problem that can not prevent the explosion due to degradation and there is a problem that the spring-type safety valve does not operate in the event of a fire in the underground storage tank that stores the combustible material and will be described in detail as follows.

Referring to the analysis of the cause of the explosion of the LPG storage tank equipped with the spring-type safety valve of Figure 13 will be described as follows.

Ground fire LPG storage tanks equipped with spring-loaded safety valves may cause explosion in the following cases. First, the gas phase part 302 of the storage tank 301 is in contact with the flame 303 and the flame contact portion 304 of the storage tank 301 swells due to a decrease in tensile strength of the storage tank 301. It can be assumed that 301 explodes, and in current gas engineering this is called boiling liquid vapor explosion (BLEVE).

Before operation of the spring-type safety valve 305 in the storage tank 301, the LPG liquid in the storage tank 301 is convection so that the upper portion 306 of the liquid forms a high temperature portion and the central portion 307 of the liquid forms a middle temperature portion. The lower portion 308 of the liquid forms a low temperature portion.

However, in case of LPG storage tank explosion, such an explosion where the storage tank is divided into two or the front and rear hard plates are separated and the copper plate is transformed into a flat plate should not be regarded as an explosion due to a decrease in the tensile strength of the storage tank.

Second, it can be assumed that the explosion of the storage tank 310 due to the decrease in the tensile strength of the storage tank 310 with the increase in the internal pressure of the storage tank 310.

The gas phase part 311 and the liquid phase part of the LPG storage tank 310 are heated by the flame 312 and the liquid inside the storage tank 310 is convection so that the upper part 313 of the liquid forms a high temperature part and the middle part of the liquid ( 307 forms the middle temperature portion and the lower portion of the liquid 308 forms the low temperature portion, the LPG vaporized by the spring-type safety valve 316 of the upper storage tank 310 is operated by the increase in the LPC vapor pressure storage tank 310 LPG liquid in the storage tank 310 is discharged to the upper portion of the liquid upper portion 317 of the liquid when the LPG is evaporated to evaporate by absorbing the heat of the liquid of the upper portion 317, the low temperature LPG is the liquid Evenly distributed in the upper portion 317 and lowered to the lower portion 318, LPG liquid 319 of the inner surface of the storage tank 310 absorbs heat from the atmosphere and flame to move to the upper portion 317 of the liquid to move upward Some of the LPG liquid takes the heat of the LPG liquid and evaporates, and the remaining low temperature LPG liquid is lower (318) The convection is caused by the movement of the convection, and the speed of the convection is faster as the amount of LPG vapor discharged from the spring type safety valve 316 increases. Also, the more heat that is absorbed from the atmosphere and the flame of the storage tank 310, the more convection. This speeds up the convection and this convection cools the storage tank. However, when the LPG gas molecules released from the spring type safety valve 316 are less than the gas molecules generated by evaporation from the LPG liquid, the internal pressure of the storage tank 310 continues to rise higher than the set pressure of the spring type safety valve 316. The storage tank 310 is exploded. At this time, the decrease in tensile strength due to the flame of the storage tank 310 also acts as a cause of the storage tank 310 explosion.

Third, it can be assumed that the storage tank 321 is exploded by the liquid rod phenomenon of the storage tank 321, and when the liquid seal phenomenon by the flame occurs 100 [%] regardless of the thickness of the storage tank, there is no exception .

The expansion rate according to the temperature change of LPG liquid is about 20 times that of propane water. When the liquid ratio of propane at 15 [deg.] C is 100 [%], it is 104.9 [%] at 30 [deg.] C, 111.1 [%] at 45 [deg.] C, and 119.3 [%] at 60 [deg.] C. If the propane liquid temperature reaches 45 [° C.] at the time of the fire at the storage tank 321 liquid capacity 90 [%] at 15 [° C.], the liquid capacity becomes 99.99 [%] of the storage tank. At this time, the propane vapor pressure is 15 [kgf / ㎠], when the propane liquid temperature is 53 [° C], the propane vapor pressure is 18 [kgf / ㎠] and the spring pressure relief valve 322 has an operating pressure of 18 [kgf / ㎠] or It should be regarded that the liquid rod phenomenon is started in the storage tank at propane liquid temperature 45 [deg.] C, and when the ejection of propane liquid from the spring type safety valve 322 starts, the storage tank 321 is swept into the flame 323 by the ejected propane liquid. In addition, the liquid expansion amount in the storage tank 321 can not be discharged from the spring-type safety valve 322 and the storage tank 321 will explode.

This is because the magnitude of the force to expand in the liquid rod phenomenon is infinite, and this force is the force that can destroy any pressure vessel of any thickness, the author is Kim Byung-hu, signature perfection gas engineer, published 20 February 2001, It is said that the issuer is a book resident, and the 821P was heated to two tank lorry on the ground during the explosion of September 11, 1998 in Bucheon Daesung filling station, and the liquid inside the tank was released through the safety valve and the tank exploded. It should be noted that the liquid was released from the spring-loaded safety valve, which proves that the LPG in the tank expands and the liquid volume in the storage tank is 100 [%]. This is because the liquid can be ejected only when the liquid volume is 100 [%] from the storage tank because it is installed at the top of the gas phase part.

Fourth, it can be assumed that the explosion by the overcharging of the storage tank 321. LPG storage tanks have a safety space of 10 [%] to prevent explosion of storage tanks due to overpressure caused by overcharging. In the event of a fire during overcharging, pressure surges that cannot be handled by spring type safety valves are prevented. Accompanied by the fact that the storage tank is ruptured is known to fire and gas engineers all over the world, this is the same as the explosion of the storage tank 321 by the liquid rod phenomenon. And when an overfilled LPG container with no safety space is exposed to direct sunlight or the air temperature is higher than the LPG liquid temperature, the spring-type safety valve installed in the valve of the LPG container operates to release the expanded LPG. Does not explode However, according to a 2002 news report by MBC, Korea, a test result that a 20kg LPG container with a safe space is exploded in three minutes when heated by a flame is disclosed. That is, overfilled LPG vessels and storage tanks will explode 100% when heated by flame and there is no exception.

＜ Problem of installing spring type safety valve, rupture plate, and usable oil in underground investment type LPG storage tank ＞

Referring to the layout of the safety device in the underground buried LPG storage tank of Figure 14 as follows.

When the LPG storage tank 404 is installed in the basement, the spring-type safety valve 401 and the rupture plate 402 do not operate in the event of a fire. The propane vapor pressure of 30 [° C.] is 9.9 [kgf / cm 2], the vapor pressure of butane of 30 [° C.] is 2.3 [kgf / cm 2], and the set pressure of the spring type safety valve 401 is 18 [kgf / cm 2]. Cold air flows into the upper end of the storage tank 404 due to convection in the event of a fire in the upper portion of the storage tank 404 to prevent overheating of the storage tank 404 and the latent heat of evaporation of LPG vapor flowing out of the storage tank 404. LPG liquid is cooled due to absorption of water to prevent excessive rise of LPG vapor pressure and to prevent excessive rise of LPG vapor pressure due to the thermal insulation of the ground, so that the storage tank installed underground does not generate excessive pressure rise in the convection. As a result, cold air is introduced into the upper portion of the storage tank 404, so that an explosion of the storage tank does not occur due to a decrease in tensile strength.

This can be seen that the spring-type safety valve 401 which is the main safety valve of the storage tank 404 does not operate at the fire site. In addition, the radiant heat from the upper flame of the storage tank 404 and the heat absorption from the ground and the heat absorption from the ground are made, so that the latent heat of evaporation necessary for the evaporation of the LPG liquid in the storage tank 404 is sufficiently supplied to the upper portion of the storage tank 404. Large flames are formed in the.

In addition, the spring type safety valve 401 does not operate, so the bursting plate 402 having a higher set pressure than the spring type safety valve 401 does not operate naturally.

In addition, the jeonjeonjeon 403 is installed on the upper end of the storage tank 404 is not operating due to the inflow of cold air due to convection or the operation time is delayed, when the jeonjeonjeon 403 is operated storage tank ( Forming a huge flame on the top of the 404, the adjacent buildings are engulfed in flame, there is a problem of promoting the explosion of the tank lorry adjacent to the storage tank (404). In other words, when a storage tank of combustible material is installed underground, the spring type safety valve and the rupture plate become useless and there is a problem of expanding the fire before use.However, when the pressure rises due to reactions such as polymerization and decomposition, The spring safety valve 401 or the rupture plate 402 may operate in the storage tank of the combustible material.

＜ Problem when installing a spring type safety valve, a rupture disk, and a usable battery in a terrestrial LPG storage tank

Referring to the layout of the safety device in the ground-type LPG storage tank or the storage tank fixed to the vehicle of Figure 15 as follows.

In the event of a fire in the storage tank 504, the spring-type safety valve 501 cannot prevent the explosion of the storage tank 504, and the existing LPG storage tank 504 is not provided with a rupture plate 502 and a fusible plate 503. However, if it is installed, the bursting plate 502 has a risk of malfunction and does not have a fire detection function. Therefore, the bursting plate 502 is stored at or below the set pressure of the bursting plate 502 due to a decrease in tensile strength caused by local heating of the storage tank 504. There is a risk of explosion of the tank 504 and the soluble 503 does not operate or has a long operation time because it is difficult to generate heat storage phenomena in the soluble 503 installed in the vapor part of the storage tank 504 in an open space. When it is late and the available war 503 is activated, a huge flame is formed at the top of the storage tank 504 to engulf adjacent buildings in flames.

＜ Problem of Storage Tank Explosion Proof System in Fire of LPG Filling Station ＞

There is a problem that the operation method is manual.

As described above, solubility has the disadvantage of not forming a conduit at the outlet of the fluid.

Accordingly, an object of the present invention is to provide a heat-opening valve having a heat sensing function capable of forming a conduit at an outlet of a fluid while fully performing a function before use, and as described above, the rupture plate has a heat such as that available. The downside was that there was no detection.

Accordingly, an object of the present invention is to provide a thermally open valve having a pressure sensing function and a heat sensing function capable of performing the functions of a rupture plate and a soluble plate completely, and as described above, a closed sprinkler in a sprinkler fire extinguishing system. When the head has an obstacle that prevents the sprinkling pattern formation at the installation position of the closed sprinkler head, the closed sprinkler head has a disadvantage in that it cannot form a normal fire detection and a normal sprinkler pattern.

Accordingly, the present invention is to provide a sprinkling pattern forming apparatus using a thermally open valve that allows the normal fire detection and the normal sprinkling pattern formation is made even in the sprinkler fire extinguishing equipment there is an obstacle that prevents the sprinkling pattern formation. In the sprinkler fire extinguishing system using a closed sprinkler head as described above, electrical facilities such as an electrical room, a communication equipment room, and a computer room should be free of waterproof water, but a closed sprinkler head may not be free of water.

Therefore, the present invention uses a thermo-opening valve to allow a normal fire detection and normal water distribution patten is formed in a sprinkler pipe installed in an electrical facility such as an electrical room, a communication equipment room, and a computer room in a sprinkler fire extinguishing system using a closed sprinkler head. It is an object of the invention to provide an apparatus for forming a water spray pattern, and as described above, there is a disadvantage that the LPG tank lorry explodes when it is in flames. Therefore, the present invention is to provide a LPG tank lorry automatic explosion prevention device using a thermally open valve that automatically prevents the explosion of LPG tank lorry in the event of a fire in the LPG tank lorry or when the LPG tank lorry is caught in a flame. The purpose.

1 is a cross-sectional view of a fusible-link thermally open valve

Figure 2 is a cross-sectional view of the glass bulb type thermal open valve

3 is a bottom view of a fugitive receiving material

4 is a plan view of the induction plate

5 is a frame right side view

6 is a frame bottom view

7 is a top view of the cap

8 is a cover cross-sectional view

9 is a plan top view

10 is a valve seat front view.

11 is a cross-sectional view of the valve body

12 is a view showing a watering pattern forming method in a sprinkler pipe

13 is a view analyzing the cause of explosion of the LPG storage tank equipped with a spring-type safety valve

14 is a layout view of the safety device in the underground buried LPG storage tank

15 is a layout view of a safety device in a terrestrial LPG storage tank or a storage tank fixed to a vehicle.

16 is a schematic diagram of a flammable gas storage tank automatic explosion prevention and removal fire extinguishing system using a thermal open valve

17 is an explanatory view of the basic theory of the storage tank explosion prevention system in case of LPG charging station fire

18 is a schematic diagram of a storage tank explosion prevention system in case of LPG charging station fire

19 is a view showing a water spray pattern forming method in a sprinkler pipe

20 is a schematic diagram of a LPG tank lorry automatic explosion prevention device using a thermosensitive valve

In order to achieve the object of the present invention to the LPG tank lorry automatic explosion prevention device using a thermal spray valve and a thermal spray valve forming apparatus, a water spray pattern forming apparatus using a thermal opening valve and a thermal opening valve implemented in the present invention. Referring to the configuration and operation in detail with reference to the accompanying drawings as follows.

In order to achieve the object of the invention described above, the components of the thermally open valve implemented in the present invention and the coupling relationship between the components are as follows.

It demonstrates based on attached drawing (FIGS. 1-11). 1 is a cross-sectional view of a fusible-link type thermally open valve according to the present invention, and FIG. 2 is a cross-sectional view of a glass bulb type thermally open valve according to the present invention, and is a view of components of the thermally open valve of FIG. 1 or 2. FIG. 3 is a bottom view of a fugitive material receiver, FIG. 4 is a plan view of a sloped induction plate, FIG. 5 is a frame right side view, FIG. 7 is a cap plan view, FIG. 8 is a cover section view, FIG. 9 is a cover plan view, and FIG. 10 is a front view of the valve seat, and FIG. 11 is a cross-sectional view of the valve body, and the components of the thermally open valve and the coupling relationship between the components are as follows.

The center line of the valve inlet 119 and the valve outlet 120 is perpendicular to each other, and a tapered female thread is formed at the valve inlet 119 and the valve outlet 120, and the disk opening 118 is perpendicular to the upper center of the valve inlet 119. ), And a frame coupling portion 113-1, which is externally threaded, is formed on the outer peripheral surface of the opposite upper end of the valve inlet 119, and the gasket groove 113-2 is formed inside the upper upper end of the valve inlet 119. And a valve body 113 having a female threaded cover engaging portion 113-3 at an inner central portion in contact with the gasket groove, and integrally formed with the valve body 113 and having an upper end of the disk opening 118. A disc sheet 117 protruding from the gasket, a gasket 110 inserted into the gasket groove 113-2 of the valve body 113, and a cover engaging portion 113-3 of the valve body 113. Valve body engaging portion (109-5) formed on the bottom of the outer circumferential surface thereof and coupled to the valve body coupling portion (109-5). A gasket pressing portion 109-3 protruding from the upper outer circumferential surface is formed, and a hexagonal surface 109-2 is formed to clamp the valve body engaging portion to the upper outer circumferential surface of the gasket pressing portion 109-3. 109-2) Cap and valve stem support portion 109-1 is formed in the upper portion, a valve stem penetration portion 109-7 is formed in the inner center portion, and an O-ring groove 109 is formed in the valve stem penetration portion 109-7. -6) and a cover 109 having a spring chamber 109-4 formed above the valve stem penetrating portion 109-7, and O inserted into the O-ring groove 109-6 of the cover 109. A spring 108 inserted into a ring 111 and a spring chamber 109-4 of the cover 109 and a disc packing insert 115-1 in close contact with the disc sheet 117. Penetrates the disk 115, the disk packing 116 inserted into the disk packing inserting portion 115-1 under the disk 115, and the valve stem penetrating portion 109-7 of the lid 109. Is formed integrally with the disk 115, the top A valve stem 112 having a male threaded cap coupling portion 112-1 formed on an outer circumferential surface thereof, and having a groove 112-2 for inserting a heat sensing portion at an inner central portion of the upper end thereof, and the valve stem 112 of the valve stem 112. The valve is coupled to the cap coupling portion 112-1, the cap of the cover 109 and the insertion portion 107-1 of the valve stem support portion 109-1 is formed in the inner lower portion, and the female threaded valve in the inner central portion A cap 107 having a large coupling portion 107-2, a silicon O ring 122 inserted into the cap and the valve stem support 109-1 of the lid 109, and the valve stem 112. Inserted through the upper end of the disk 115 is in close contact with the top of the bag packing 114, the valve body coupling portion 113-1 of the valve body 113, the valve body coupling portion female threaded to the inner bottom ( 106-1) and the gasket pressing portion insertion portion 106-5 of the gasket pressing portion 109-3 of the cover 109 is formed on the valve body engaging portion 106-1, and the gasket pressing portion On insertion part 106-5 Forming frame 106-2 is formed on both sides of the stage, the upper frame 106-4 is formed on the upper portion of the frame 106-2, and the fixed screw coupling portion which is female-threaded in the inner center of the frame 106-4 ( 106-3) to form a frame 106 so that the upper two sides open to the atmosphere, and a fixing screw coupled to the fixing screw engaging portion 106-3 of the frame 106-4 of the frame 106-4 And a heat sensing portion inserted between the fixing screw 101 and the heat sensing portion inserting groove 112-2 of the valve stem 112.

The heat sensing part of the thermally open valve has a hollow cylindrical fusible material receiver 102 having a bottom surface open to the atmosphere, a fusible material and an inclined guide plate and an insertion part 102-1 of the fusible material receiver 102. The disk pillar 104-1 is formed in the disk 104-3 to be eccentric with the center of the disk 104-3, and the gap retaining rod insertion groove 104-2 is formed in the inner center of the lower end. The inclined guide plate 104, the fusible material of the fusible material receiving 102 and the fusible material 103 inserted into the inclined guide plate inserting portion 102-1, and the inclined guide plate 104 The gap holding rods are inserted into the grooves for inserting the gap 104-2, and the gap holding rods 105 are formed in a hemispherical shape at the top and bottom of the cylinder. It is characterized by consisting of the glass bulb 121.

The heat-sensitive valve composed of the fusible material receiver 102, the inclined guide plate 104, the fusible material 103, and the gap retaining rod 105 is called a fusible-link type thermally-opening valve. The thermally open valve composed of the glass bulb 121 in which liquid is sealed in the glass sphere is called a glass bulb type thermally open valve.

※ The coupling relationship between the components and components of the water spray pattern forming apparatus using a thermally open valve implemented in the present invention to achieve the object of the present invention is as follows.

The sprinkler pattern forming method of the sprinkler tube of FIG. 12 will be described with reference to FIG.

A sprinkler pipe 241 of the sprinkler fire extinguishing system, a branch pipe 242 branched from the sprinkler pipe 241, a thermal open valve 243 provided at an end of the branch pipe 242, and the thermal open valve ( And an open sprinkler head 245 provided at an end of the curved pipe 244, and a curved pipe 244 provided at the outlet of 243.

The components of the water spray pattern forming apparatus using the thermally open valve implemented in the present invention to achieve the object of the invention described above are as follows.

A water spray pattern forming method in the sprinkler tube of FIG. 19 will be described with reference to FIG.

The sprinkler pipe 246 of the sprinkler fire extinguishing system, the branch pipe 247 branched from the sprinkler pipe 246, the thermal open valve 248 provided at the end of the branch pipe 247, and the thermal open valve ( And a water spray head 250 provided at an end of the curved pipe 249 and a water spray head 250 provided at an end of the curved pipe 249.

※ The coupling relationship between the components and components of the LPG tank lorry automatic explosion prevention device using the thermally open valve implemented in the present invention to achieve the above object is as follows.

Referring to the LPG tank lorry automatic explosion prevention system using a thermally open valve of Figure 20 will be described with reference to.

The relationship between components and components is as follows.

LPG storage tank 838 installed in the tank lorry, an internal pipe 840 installed inside the LPG storage tank 838, a control valve 846 installed at the outlet of the infunnel pipe 840, and the control Inlet-side main pipe 847 of the glass bulb type thermally open valves 836, 837, and 848 having an operating temperature of 92 [deg.] C and an operating pressure of 23 [kgf / cm &lt; 2 &gt; The glass bulb type thermally open valves 836, 837 and 848 provided at the outlet of the inlet-side main pipe 847 of the thermally open valve and the glass bulb type thermally open valves 836, 837 and 848 are provided at the outlet side. Outlet main pipe 851 of the glass bulb type thermally open valve, stop valve 834 provided in the outlet side main pipe 851 of the glass bulb type thermally open valve, and outlet main pipe of the glass bulb type thermally open valve A stop valve 835 provided to the branch pipe branched at 851 and an outlet of the stop valve 835. A glass bulb type thermally open valve 831 having an operating temperature of 92 [deg.] C and an operating pressure of 17 [kgf / [cm2] provided at the end of the union 850 and the outlet main pipe 851 of the glass bulb type thermally open valve; A discharge tube 833 provided at an outlet side of the glass bulb type thermally open valve 831, a cap 832 provided at an end of the discharge tube 833, and a gas phase portion of the storage tank 838. A spring type safety valve 839 having a set pressure of 18 [kgf / cm 2], a loading arm 849 coupled to the union 850 and installed at an LPG filling station, and an outlet of the loading arm 849. A tank lorry protective tube 852, a control valve 842 provided in the tank lorry protective tube 852, a liquid separation tube 852 branched from the tank lorry protective tube 852, and the tank lorry protective tube 852 ), A combustor 844 provided at the end of the), an ignition torch 843 for ignition of the combustor 844, a propane container 845 that is a fuel of the ignition torch 843, and the And a stop valve 841 provided in a pipe connecting the ignition torch 843 and the propane container 845.

※ Embodiments of the thermally open valve implemented in the present invention in order to achieve the object of the present invention is as follows.

① In order to achieve the object of the present invention, the manufacturing process of the thermally open valve in order to be able to reproduce the action of each component and the thermally open valve in the coupling relationship between the components of the thermally open valve implemented in the present invention. The basic data generated from are as follows.

An embodiment is also described based on FIGS. 1 to 11.

The valve body 113 has the center line of the valve inlet 119 and the valve outlet 120 at right angles so that the flow direction of the fluid changes at right angles, and the tapered female thread for the tubular inlet at the valve inlet 119 and the valve outlet 120. To form a tube to connect the pipe or pipe joint, and to form a disk opening 118 in the upper center of the valve inlet 119, the fluid is introduced from the valve inlet 119 and the valve outlet 120 through the disk opening 118 ), The fluid flows out. The other one except for the valve inlet 119 and the valve outlet 120 of the valve body 113 having a T-shaped shape forms a frame coupling part 113-1 by processing a male screw on the outer circumferential surface of the upper end, and The gasket groove 113-2 is formed on the inner side of the valve body, and the material of the valve body 113 having the female threaded cover coupling portion 113-3 formed on the inner center portion in contact with the gasket groove 113-2 is made of brass or Stainless steel or those suitable for ambient temperature and contact fluid shall be used.

The disc sheet 117 is formed integrally with the valve body 113, and the disc sheet 117 formed by protruding from the upper end of the disc opening 118 is usually heat-sensitive as the disc packing 116 of the disc 115 is in close contact with each other. Keep the open valve closed.

Gasket 110 is inserted into the gasket groove 113-2 of the valve body 113 to maintain the airtight to prevent the leakage of fluid between the valve body 113 and the cover 109 and the material is basically rubber Alternatively, teflon should be used or suitable for ambient temperature and contact fluid.

The cover 109 is coupled to the cover engaging portion 113-3 of the valve body 113, and forms a valve body engaging portion 109-5 which is externally threaded on the lower circumferential surface thereof, and the valve body engaging portion 109-. A gasket pressing portion 109-3 is formed on the upper outer circumferential surface of 5), and a hexagonal surface 109 can be attached to the valve body engaging portion 109-5 on the upper outer circumferential surface of the gasket pressing portion 109-3. -2), the cap and the valve stem support portion 109-1 are formed on the hexagonal surface 109-2, the valve stem penetration portion 109-7 is formed in the inner center portion, and the valve stem penetration portion is formed. An o-ring groove 109-6 is formed in 109-7, and a cover 109 in which a spring chamber 109-4 is formed on the upper portion of the valve stem penetrating portion 109-7 is provided with the valve body 113. Is connected to a screw bonnet type with a gasket 110 interposed therebetween, and a thermally open valve when connecting a valve body engaging portion 109-5, which has been threaded, by applying an actual substance such as epoxy or compound. The gasket 110 does not need to be installed, and the material of the cover 109 should be made of brass or stainless steel, or suitable for ambient temperature and contact fluid.

The O-ring 111 is inserted into the O-ring groove 109-6 inside the valve stem penetrating portion 109-7 of the cover 109 and is disposed between the valve stem 112 and the valve stem penetrating portion 109-7. It is to be kept airtight to prevent leakage of fluids and the material should be rubber or Teflon or suitable for ambient temperature and contact fluid.

The spring 108 is inserted into the spring chamber 109-4 of the cover 109, and the thermally open valve lifts the disk 115 when the thermal sensing unit is operated by the increase of the ambient temperature or the internal pressure. It is used to open quickly and the material is made of stainless steel and the thickness of spring coil is 1.2 [mm], the inner diameter of spring is (diameter of valve seat 112 + 1 [mm]) and the length of spring is ( The depth of the spring chamber (109-4) + 50 [mm]) was processed to test the operation resulted in the best state. The material of the spring shall also be suitable for the ambient temperature and the contact fluid.

The disk 115 is in close contact with the disk sheet 117, and the disk 115 having the disk packing insertion portion 115-1 formed therein maintains the shape of the soft disk packing 116. .

The disc packing 116 is inserted into the disc packing inserting portion 115-1 below the disc 115 to be in close contact with the disc sheet 117 to close the fluid to keep the disc opening 118 sealed. The material should be rubber or teflon or suitable for ambient temperature and contact fluid.

The valve stem 112 is formed integrally with the disk 115 to penetrate the valve stem through portion 109-7 and form a male threaded cap coupling portion 112-1 on the outer circumferential surface of the upper end, and the inner side of the upper end. The valve seat 112 having the heat sensing portion inserting groove 112-2 in the center serves to keep the disk 115 in close contact with the disk sheet 117, and the outer side of the male screw formed in the cap coupling portion 112-1. The diameter of the O-ring 111 is reduced to 1 [mm] with respect to the inner diameter of the O-ring 111. The lower end of the O-ring 111 is tapered to insert the valve stem 112 into the valve stem penetrating portion 109-7. When the O-ring 111 made of rubber is used, the outer diameter of the valve stem 112 is smaller than 0.05 [mm] or less than 0.15 [mm] with respect to the inner diameter of the valve stem penetrating portion 109-7. Machining is performed so that the valve stem 112 passes through the valve stem penetrating portion 109-7 and prevents excessive shaking of the valve stem 112 and smoothly penetrates the inner diameter of the O-ring 111. For airtightness, it should be processed to be larger than 0.2 [mm] or more than 0.35 [mm] and the valve stem 112 should be made of brass or stainless steel, or suitable for ambient temperature and contact fluid.

The cap 107 is coupled to the cap engaging portion 112-1 of the valve stem 112, and an insertion portion 107-1 of the cap of the lid 109 and the valve stem support 109-1 at an inner lower portion thereof. Is formed, and the cap 107 formed with the female threaded valve stem coupling portion 107-2 in the inner central portion prevents the inflow of foreign substances from the outside into the spring chamber 109-4 of the cover 109. It serves to support the valve stem 112 and when the cap 107 is coupled to the cap coupling portion 112-1 of the valve stem 112 so that the male screw portion of the valve stem 112 is coated with epoxy or compound When the pressure of fluid is formed at the outlet of the thermally open valve, it should be kept airtight and the material should be made of brass or stainless steel or suitable for ambient temperature and contact fluid.

The silicon O ring 122 is inserted into the cap and the valve stem support 109-1 of the cover 109 to maintain airtightness between the hexagonal surface 109-2 and the cap 107, and the material is rubber. Alternatively, silicon or soft materials suitable for ambient temperature and contact fluid should be used. If the soft materials are not used, the disc packing 116 will be difficult to maintain airtightness in the disc sheet 117.

The bag packing 114 is inserted through the upper end of the valve seat 112 to be in close contact with the upper end of the disk 115 and maintains airtightness between the disk 115 and the cover 109 when the thermosensitive valve is opened. It plays a role of mitigating impact by water hammer action and the material should be rubber or silicone or soft material suitable for ambient temperature and contact fluid.

The frame 106 is coupled to the frame coupling portion 113-1 of the valve body 113 and forms a female body threaded valve body coupling portion 106-1 at an inner lower side thereof, and the valve body coupling portion 106-1 is formed. At the upper end of the cover 109 is formed the insertion portion 106-5 of the gasket pressing portion of the gasket pressing portion 109-3, and the frame 106- is formed on both sides of the upper end of the insertion portion 106-5 of the gasket pressing portion. 2), the upper frame 106-4 is formed on the upper portion of the frame 106-2, and the inner threaded fixing screw coupling portion 106-3 is formed on the inner central portion of the upper frame 106-4. Frame 106 is formed so that the two sides of the open to the atmosphere supports the fixing screw 101, protects the heat sensing portion between the two frames (106-2) from the external impact and the two sides of the upper is opened to the atmosphere In case of fire, it plays a role of ensuring the rapid operation of the heat sensing unit by the high temperature combustion gas by radiant heat and convection from the flame. It is to be used to use a stainless steel or suitable to ambient temperature and the fluid contact.

The fixing screw 101 is coupled to the fixing screw coupling part 106-3 of the frame frame 106-4, and fixes the disk 115, the valve stem 112 and the heat sensing part, and fixes the disk 115 to the disk. In close contact with the 117, it serves to keep the thermally open valve closed. The material should be made of stainless steel or suitable for ambient temperature and contact fluid.

The heat sensing portion is inserted between the fixing screw 101 and the heat sensing portion insertion groove 112-2 of the valve stem 112, and the heat sensing portion of the fusible-link type thermally open valve of FIG. 1 receives the fusible material 102. , Inclined guide plate 104, a fusible material 103, and a gap retaining rod 105, and the heat sensing portion of the glass bulb type thermally open valve of FIG. 2 is configured of a glass bulb 121.

The fusible material receiver 102 is a fusible material receiver 102 having a hollow cylindrical fusible material and an inclined guide plate inserting portion 102-1 with its bottom surface open to the atmosphere. Because it is weak to compressive load, it has a property of being plated by pressure and hitting, and it prevents deformation of fusible material due to compressive load.It is made of brass or suitable for ambient temperature and contact fluid.Thermal conductivity of brass One having a thermal conductivity above should be used.

The inclined guide plate 104 is inserted into the fusible material and the inclined guide plate inserting portion 102-1 of the fusible material receiver 102 so as to be eccentric with the center of the disc 104-3 on the disc 104-3. The inclined guide plate 104, in which the disk pillar 104-1 is formed and the gap retaining rod insertion groove 104-2 is formed at the inner center of the lower end thereof, has the fusible material 103 at a certain temperature due to heat. When dissolved, the valve stem 112 and the spacing holding rod 105 are raised by the force of the spring 108 to press the disk 104-3 of the inclined guide plate 104, and the disk 104- 3) The disk 104-3 is inclined by the disk pillar 104-1 formed to be eccentric with the center thereof, and the gap retaining rod 105 is also inclined in association with the disc pillar 104-1, so that the gap retaining rod 105 is separated from the thermally open valve. The material is made of brass or suitable for ambient temperature and contact fluid. In that it has a thermal conductivity shall be used.

The fusible material 103 is inserted into the fusible material and the inclined guide plate inserting portion 102-1 of the fusible material receiver 102 and is dissolved when the predetermined temperature is reached by heat to incline the inclined guide plate 104. The material should be low melting point below 260 [℃] such as lead alloy, tin, antimony, cadmium, bismuth soluble alloy and synthetic resin.

The gap retaining rod 105 is inserted into the gap retaining rod insertion groove 104-2 of the inclined guide plate 104, and the gap retaining rod 105 having the hemispherical shape of the top and bottom of the cylinder is made of a fusible material ( When the 103 reaches a predetermined temperature by heat, it dissolves in conjunction with the inclined guide plate 104, and when the inclined guide plate 104 is inclined, the gap retaining rod is also inclined in conjunction with the disc retaining rod 105 from the thermosensitive valve. Is raised to open the thermally open valve. That is, when the thermally open valve 105 is opened in the closed state, the disc 115 rises to the bottom of the cover 109 to secure the interval between the discs 115 so that the thermally open valve can be completely opened. Material shall be stainless steel or one suitable for ambient temperature and contact fluid.

The glass bulb 121 is inserted between the fixing screw 101 and the heat sensing part insertion groove 112-2 of the valve stem 112 and is sealed by putting a liquid in a glass sphere, and using alcohol, ether, etc. as a liquid. When the ambient temperature rises to a constant temperature, the glass bulb 121 is destroyed by the expansion of the liquid or the vapor pressure, thereby deviating from the thermally open valve, so that the disk 115 is raised to open the thermally open valve. That is, the glass bulb 121 is a thermal sensing and the rising interval of the disk 115 so that the disk 115 rises to the bottom of the cover 109 when the thermally open valve is opened in the closed state to fully open the thermally open valve. For example, the compression fracture load of the glass bulb 121 is 60 [kgf], the spring pressure safety valve is 18 [kgf / ㎠], and the pressure test pressure is 31 [kgf / ㎠]. By installing a thermally open valve in the LPG storage tank, when the internal pressure of the LPG storage tank is 23 [kgf / ㎠], the glass bulb is destroyed so that the thermal valve valve is opened. In this case, if the area of the disc opening 118 is 60 ÷ 23 = 2.608695652 [cm2], the glass bulb 121 is broken when the internal pressure of the LPG storage tank is 23 [kgf / cm2], and the glass bulb type thermally open valve is Open.

In other words, the glass bulb type thermally open valve has a heat sensing function and a pressure sensing function. In addition, the glass bulb type thermally open valve has a pressure sensing function only when no liquid is put in the glass sphere.

② The assembly method of the thermosensitive valve is as follows.

1. The assembly method except heat detection part in thermally open valve is as follows.

Apply adhesive to the disk packing insert 115-1 of the disk 115, insert the disk packing 116, insert the bag packing 114 through the top of the valve seat 112, and then top the disk 115. The O-ring 111 into the O-ring groove 109-6 of the lid 109, apply grease for packing, and attach the valve stem 112 to the valve stem penetration portion 109 of the lid 109. -7), the silicone O-ring 112 is inserted into the cap and valve stem support 109-1 of the lid 109, and the spring 108 in the spring chamber 109-4 of the lid 109. Insert the seal, apply the actual cap to the coupling portion 112-1 of the upper end of the valve stem 112, and then combine the cap 107, gasket 110 in the gasket groove 113-2 of the upper end of the valve body 113 ), And the cover 109 with the gasket 110 between the cover coupling portion 113-3 of the valve body 113 with a spanner on the hexagonal surface 109-2 of the cover 109. Tighten the frame 106 to the frame coupler 113-1 at the upper end of the valve body 113. A monkey spanner is inserted into both frames 106-2 of the frame 106 to clamp the frame 106 to the valve body 113, and the fixing screw 101 is fixed to the frame screw 106-4. When combined with 106-3), the assembly is completed except for the heat sensing part in the thermosensitive valve.

2. The method of assembling the heat sensing part in the thermosensitive valve is as follows.

The heat sensing portion of the fusible-link thermally-opening valve shown in the cross-sectional view of the fusible-link thermally-opening valve of FIG. 1 is a fusible material receiver 102, an inclined guide plate 104, a fusible material 103, and a gap retaining rod 105. It is composed of, and the fusible material 103, such as soluble alloy, synthetic resin, etc. is inserted into the fusible material and the inclined guide plate insert portion 102-1 of the fusible material receiving 102, the fusible material receiving 102 When a high-frequency current flows in or heats the fusible material receiver 102 by a heater, and the fusible material 103 is dissolved, the inclined guide plate 104 is inserted into the fusible material and the inclined guide plate insertion unit 102-1. After the insertion, the heating is stopped to fix the inclined guide plate 104 to the fugable material receiver 102, and while pressing the cap 107 of the thermally open valve with the left hand, the lower end of the gap retaining rod 105 is opened with the right hand. It inserts into the heat-sensing part insertion groove 112-2 of the 112, and the fusible material 103 to the fusible material receiving 102. And the interval holding rod insertion groove 104-2 of the inclined guide plate 104 is inserted into the upper end of the interval holding rod 105, and the left hand is released when the inclined guide plate 104 is fixed. The cap 107, the spaced retaining rod 105, the inclined guide plate 104, and the fusible material receiver 102 are raised by the force of the fusible material receiver 102 so that the frame 106 of the frame 106 is raised. -4), when the fixing screw 101 is tightened, the assembly of the fusible link-type thermally open valve is completed.

The heat sensing portion of the glass bulb type thermally open valve shown in the cross-sectional view of the glass bulb type thermally open valve is composed of a glass bulb 121 sealed by putting a liquid such as alcohol, ether, etc. in the glass sphere, and the cap 107 of the thermally open valve. With the left hand pressing the left hand, insert the lower end of the glass bulb 121 into the heat sensing portion insertion groove 112-2 of the valve stem 112 and release the left hand. When the valve stem 112 and the glass bulb 121 are raised and the upper end of the glass bulb 121 is in close contact with the lower part of the fixing screw 101, the valve stem 112 and the glass bulb 121 are tightened with the fixing screw 101 to assemble the glass bulb type thermally open valve. This is done.

③ The operating sequence of the thermosensitive valve is as follows.

The operating sequence of the fusible-link thermally open valve shown in sectional view of the fusible-link thermally open valve of FIG. 1 is as follows.

When the ambient temperature of the flexible link type thermally open valve reaches a constant temperature by heat, the fusible material 103 is dissolved, and when the fusible material 103 is dissolved, the valve stem 112 and the gap retaining rod 105 are closed. Ascending by the force of the spring 108, the inclined guide plate 104 is inclined when the spacing holding rod 105 is raised, and the inclined guide plate 105 is inclined when the inclined guide plate 104 is inclined to the spacing holding rod When 105 is separated from the fusible-link thermally open valve, when the gap retaining rod 105 is disengaged, the disk 115 is raised to open the fusible-link thermally open valve.

The operation sequence of the glass bulb type thermal open valve shown in sectional view of the glass bulb type thermal open valve of FIG. 2 is as follows.

When the ambient temperature of the glass bulb type thermally open valve reaches a constant temperature by heat, when the glass bulb 121 is destroyed and released due to the expansion of the liquid in the glass sphere or the increase of the vapor pressure, the disk 115 is raised to the glass. The bulb type thermally open valve is opened and the fluid pressure at the valve inlet 119 of the glass bulb type thermally open valve rises by a predetermined pressure or more, so that the load acting on the disk 115 reaches the compressive fracture load of the glass bulb 121. The lower surface of the glass bulb 121 is broken, and the disk 115 is raised to open the glass bulb type thermally open valve.

④ The function of the thermal open valve is as follows.

The fusible-link thermally open valve is opened when the ambient temperature reaches a constant temperature by heat, and the fluid at the valve inlet 119 flows into the valve outlet 120 and discharges to the outside through the pipe outlet at the valve outlet 120. (119) is a valve having a function of lowering the pressure, that is, the function of lubrication, the closed sprinkler head and the soluble before the fluid inlet is the outlet can not form an outlet conduit, but the fusible-link type thermal open valve The outlet 120 has a function to form a pipeline.

The glass bulb type thermally open valve is opened when the ambient temperature reaches a constant temperature due to heat, and the fluid flows into the valve inlet 119 toward the valve outlet 120 and discharges to the outside through the pipe outlet toward the valve outlet 120. (119) the ability to lower the pressure,

When the pressure at the valve inlet 119 becomes a predetermined pressure, that is, when the load acting on the disk 115 reaches the compression fracture load of the glass bulb 121, the glass bulb 121 is broken and the valve is opened. Ie the function of fusible and rupture discs and the closed sprinkler head and fusiform cannot form a conduit at the outlet of the fluid, but the glass bulb thermally open valve can form a conduit of the valve outlet (p. 120). There is this.

⑤ Automatic explosion prevention and removal fire extinguishing equipment for combustible gas storage tank using thermal open valve, one of the methods of using thermal open valve, is as follows.

Referring to the flammable gas storage tank using the thermally open valve of Figure 16, automatic explosion prevention and removal fire extinguishing facility system diagram as follows.

The flammable gas storage tank 808 or its open state with the control valve 815 and the second storage tank protection tube valve 813 open, and ignited by the combustor ignition torch 802 using the propane container 817. In the event of a fire in the surroundings, the thermal-opening valve 822 installed in the storage tank protective tube 804 is opened at a predetermined temperature or pressure by heat sensing or an increase in the internal pressure of the storage tank 808, and the storage tank protective tube The combustible gas is introduced into the expansion tank 812 through 804, combusted in the combustor 801 through the discharge pipe 816, and released into the atmosphere, and liquefied when the fluid in the storage tank 808 is combustible liquefied gas. Due to the absorption of latent heat of evaporation of gas, water vapor in the atmosphere is condensed and frozen outside the storage tank 808 and attached to the surface of the storage tank 808 in a frost state to be heated by the flame 806 of the storage tank 808. To reduce the tensile strength And the inside of the storage tank 808 through the discharge pipe 816 and the equalization of the atmosphere and the storage tank 808 proceeds to obtain a low evaporation temperature and a large evaporation latent heat close to the atmospheric pressure temperature and pressure drops sharply As the flame 806 outside the storage tank 808 rapidly decreases, the flame 806 disappears, thereby preventing the explosion of the storage tank 808, and the fluid of the storage tank 808 is compressed natural gas. In the case of flammable compressed gas, such as the pressure equalization between the atmosphere and the storage tank 808 through the discharge pipe 816, the internal pressure of the storage tank 808 drops sharply, and the flame 806 outside the storage tank 808. This rapidly decreases the phenomenon that the flame 806 is extinguished, it is possible to prevent and extinguish the explosion of the storage tank 808.

Automatic explosion prevention and removal of flammable gas storage tanks Another function of the fire extinguishing system is to open the control valve 815, the second liquid pipe valve 814, the container valve 818 of the N ₂ container 810, and torch burner ignition ( In the case where a fire occurs in or near the combustible gas storage tank 808 with the ignition on 802, the thermal open valve 823 provided in the liquid pipe 803 and the thermal open valve installed in the N ₂ ejection main pipe 805. The 821 is opened at a predetermined temperature or pressure by heat sensing or an increase in the internal pressure of the storage tank 808, and the liquid combustible gas in the storage tank 808 is transferred to the siphon tube 807 by the vapor pressure of the gas phase part. It is introduced into the expansion tank 812 through the liquid pipe 803, and combustible gas is combusted in the combustor 801 through the discharge pipe 816 to be discharged into the atmosphere to equalize the atmosphere and the expansion tank 812 proceeds. The internal pressure of the expansion tank 812 The pressure regulator 811 is set to be close to atmospheric pressure and the liquid combustible gas is rapidly introduced into the expansion tank 812, and the pressure regulator 811 is set to be equal to or less than the saturation pressure corresponding to the temperature of the combustible gas or less than the pressure test pressure of the storage tank 808. When the N ₂ gas is ejected toward the upper end of the storage tank 808 from the upwardly pipe-type injection nozzle 809 inside the storage tank 808 via the N ₂ jet main pipe 805 through the storage tank 808. The pressure of the gas phase rises more than the saturation pressure corresponding to the temperature of the combustible gas so that the vapor of the combustible gas is condensed, the vaporization of the liquid combustible gas stops evaporation, and the storage tank 808 is provided at the vapor part of the storage tank 808. ), The flame 806 is extinguished as the flame 806 outside the storage tank 808 suddenly decreases due to the N ₂ ejection at the flammable gas leaking part of the combustion tank, and the N ₂ vapor pressure in the gas phase in the storage tank 808 occurs. By When the combustible gas of the liquid is rapidly flowing into the expansion tank 812, the inlet is complete N ₂ gas to be introduced into the expansion tank 812, the mixed vapor of the N ₂ gas and the combustible gas is discharged from the combustor 801 If the incomplete combustion phenomenon occurs severely in the combustor 801, the control valve 815 may be shut off. When the positive pressure at the outlet side of the pressure regulator 811 drops sharply than the set pressure, the opening of the selection valve 818 is adjusted so that the scale of the pressure gauge 820 of the pressure chamber 819 coincides with the set pressure of the pressure regulator 811. Do it. By doing so it is possible to prevent and extinguish the explosion of the storage tank (808).

※ Embodiment of the water spray pattern forming apparatus using a thermally open valve implemented in the present invention to achieve the above object is as follows.

① In order to achieve the object of the present invention, the action of each component in the coupling relationship between the components and components of the water spray pattern forming apparatus using the thermosensitive open valve implemented in the present invention are as follows.

The sprinkler pattern forming method of the sprinkler tube of FIG. 12 will be described with reference to FIG.

The sprinkler pipe 241 of the sprinkler fire extinguishing facility serves to send water that is a fire extinguishing agent, the branch pipe 242 branched from the sprinkler pipe 241 serves to divide the flow rate in the sprinkler pipe 241, The thermally open valve 243 installed at the end of the branch pipe 242 is opened when the ambient temperature reaches a constant temperature by heat during a fire, and serves to send water, which is an extinguishing agent, to the open sprinkler head 245. The curved pipe 244 installed at the outlet of the thermally open valve 243 serves to change the flow direction of the fluid at a right angle, and the open sprinkler head 245 installed at the end of the curved pipe 244 has a waterproof hole at all times. It is open and the water supplied from the thermally open valve 243 is spouted to spray in the shape of raindrops to serve to extinguish in the event of fire.

(2) The comparative example of the conventional method of forming the sprinkler pattern in the sprinkler pipe of the sprinkler fire extinguishing system using the closed sprinkler head and the method of forming the sprinkler pattern using the thermally open valve is as follows.

The sprinkling pattern in the sprinkler tube of FIG. 12 will be described with reference to FIG.

In the case of the closed sprinkler head 201 that is close to the beam 204, the sprinkler pattern on the right side prevents the sprinkler pattern from being formed on the right side and the water spray does not reach the bottom right of the closed sprinkler head 201. The automatic fire extinguishing function of the sprinkler fire extinguishing system is lost and the thermally open valve 202 close to the beam 204 is automatically opened in the event of a fire, and the sprinkler fire extinguishing system forms a normal water spray pattern in the lower open sprinkler head 203 to allow the Automatic fire extinguishing is maintained.

In addition, when the closed sprinkler heads 207 and 208 proximate to the beam 205 are installed at the lower end of the beam 205, the closed sprinkler heads 206 and 209 of the high temperature part operate normally when the fire occurs and the low temperature part is closed. The type sprinkler heads 207 and 208 do not operate or take a long time to be opened by operation, and do not form a sprinkler pattern so that the sprinkler does not reach the bottom of the closed sprinkler heads 207 and 208 of the low temperature portion. If the automatic fire extinguishing function of the extinguishing equipment is lost or takes a long time to operate and open, the risk of asphyxiation is increased due to the expansion of fire and the generation of smoke.

In addition, when the sprinkler heads 214 and 216 are installed on the duct 213 and the pipe 212 under the ceiling 215, the normal watering pattern is prevented by the duct 213 and the pipe 212 during a fire. Water spray does not reach the bottom of the duct 213 and the lower part of the pipe 212, so the automatic fire extinguishing function of the sprinkler extinguishing facility is lost, and only the other closed sprinkler heads 210 and 211 operate normally.

In addition, when the automatic drain valve 226 and the closed sprinkler head 220 are installed at the lower portion of the duct 219 and the pipe 221 under the ceiling 217, the closed sprinkler head 220 positioned at the low temperature part in case of fire is If the sprinkler pattern does not form due to a long time of inoperation or opening, the automatic extinguishing function of the sprinkler fire extinguishing system is lost. The risk of suffocation is increased.

Then, the thermosensitive valve 224 is installed at the upper part of the duct 222 and the pipe 223 under the ceiling 217, and the outlet valve of the thermosensitive valve 224 is disposed at the lower part of the duct 222 and the pipe 223. When the open sprinkler head 225 is installed at the end of the 227, the thermally open valve 224 of the high temperature part is normally opened quickly in the event of a fire and is opened immediately, and immediately at the open sprinkler head 225 through the outlet curved pipe 227. Watering is started to form a normal watering pattern to maintain the normal automatic fire extinguishing function of the sprinkler fire extinguishing system.

※ Embodiment of the water spray pattern forming apparatus using a thermally open valve implemented in the present invention in order to achieve the object of the present invention is as follows.

In order to achieve the object of the present invention, the function of the water spray pattern forming apparatus using the thermally open valve implemented in the present invention and the action of each component in the coupling relationship between the components and components are as follows.

A water spray pattern forming method in the sprinkler tube of FIG. 19 will be described with reference to FIG.

The sprinkler pipe 246 of the sprinkler fire extinguishing facility serves to send water which is a fire extinguishing agent, and the branch pipe 247 branched from the sprinkler pipe 246 serves to divide the flow rate in the sprinkler pipe 246. , The thermally open valve 248 installed at the end of the branch pipe 247 is opened when the ambient temperature reaches a constant temperature by the heat in the event of fire, and serves to send water, which is an extinguishing agent, to the water spray head 250. The curved pipe 249 installed at the outlet of the thermally open valve 248 serves to change the flow direction of the fluid at a right angle, and the water spray head 250 installed at the end of the curved pipe 249 has a watertight opening at all times. The extinguishing water supplied from the thermally open valve 248 is atomized into a small size of water droplets and is waterproof. The free water has good electrical insulation, and has a cooling effect, a suffocating effect, a dilution effect, and a nonflammable surface. It plays a role in extinguishing by the effect of forming an emulsified layer, that is, an emalzone.

※ LPG tank lorry automatic explosion prevention device using a thermally open valve implemented in the present invention in order to achieve the object of the present invention is as follows.

The function of each LPG tank lorry automatic explosion prevention device using a thermally open valve, the method of use, and the action of each component in the coupling relationship between components are as follows.

Referring to the LPG tank lorry automatic explosion prevention system using a thermally open valve of Figure 20 will be described with reference to.

When the LPG tank lorry is in flames while the LPG tank lorry is in operation, the glass bulb thermally open valves (831, 836, 837, 848) are opened at 92 [deg.] C or the glass bulb thermally open valves (831, 836, 837, If the heat detection unit fails to detect the heat in 848, the spring type safety valve with the set pressure of 18 [kgf / cm2] when the internal pressure rises when the LPG liquid in the storage tank 838 expands and there is no safety space. LPG liquid is discharged from the glass 839, and then the glass is operated at 23 [kgf / cm 2] when the internal pressure suddenly rises due to rapid liquid expansion inside the storage tank 838 which cannot be handled by the spring type safety valve 839. Bulb-type thermally open valves 836, 837, 848 are opened followed by a glass bulb-type thermally open valve 831 with an operating pressure of 17 [kgf / cm 2]. The installation method of this type of thermally open valve is called a series-parallel connection of the thermally open valve, and the series connection is one or more of the glass bulb type thermally open valves 836, 837, and 848 having an operating pressure of 23 [kgf / cm2] connected in parallel. LPG is discharged through the discharge tube 833 only when this opening is made and the glass bulb type thermally open valve 831 having an operating pressure of 17 [kgf / cm 2] is opened. That is, serial connection is to prevent malfunction due to some reason such as rollover of tank lorry, and parallel connection is to increase flow rate and fire detection capability. When the glass bulb type thermally open valves 831, 836, 837, and 848 are opened, the LPG of the storage tank 838 passes through the internal pipe 848 and the main pipe 847 of the inlet side of the glass bulb type thermally open valve; Cap 832 via bulb type thermally open valves 836, 837, 848, glass bulb type thermally open valve outlet side main pipe 851, glass bulb type thermally open valve 831, and discharge tube 833. ), Released into the atmosphere, ignited by the flame, and the LPG starts to burn, and the internal pressure of the storage tank 838 drops sharply to automatically prevent the explosion of the LPG tank lorry, and the LPG tank lorry is waiting for stocking at the charging station. Normally, the loading arm 849 is coupled to the union 850 of the tank lorry, the stop valve 834 is closed, and the stop valves 835 and 841 are opened to ignite the torch 843 for ignition and the control valve 842. To prepare for a fire.

When the LPG tank lorry is engulfed in flames, the glass bulb-type thermally open valves (836, 837, 848) are opened at 92 [deg.] C or the LPG liquid in the storage tank 838 expands to an overcharge state with no safety space. LPG liquid is released from the spring-type safety valve 839 having a set pressure of 18 [kgf / cm 2] by the rising, and the released LPG liquid is combusted to increase the amount of heat input to the storage tank 838. Due to the rapid expansion of the liquid in the spring-type safety valve (839) it is unable to release more than the amount of liquid expansion, liquid rod phenomenon occurs, the internal pressure of the storage tank 838 suddenly rises, the glass of operating pressure 23 [kgf / ㎠] When the bulb type thermally open valves 836, 837, and 848 are opened, the LPG of the storage tank 838 is connected to the internal pipe 840 and the inlet side main pipe 847 of the glass bulb type thermally open valve, and the glass bulb type thermally open type valve. Valves 836, 837 and 848, with glass bulb type thermostat LPG liquid flows into the liquid separation pipe 852 by gravity through the main valve 851 and the branch valve stop valve 835, the loading arm 849, and the tank lorry protection pipe 852. When the LPG vapor flows into the combustor 844 and burns the LPG and releases it into the atmosphere, the water vapor in the atmosphere is condensed and frozen outside the storage tank 838 due to absorption of latent heat of LPG. It is attached to the surface of the storage tank 838 to prevent the decrease in tensile strength due to the heating by the flame, and the inside of the storage tank 838 through the tank lorry protective tube 852 equalizing the atmosphere and the storage tank 838 As a result, a low evaporation temperature and a large evaporation latent heat corresponding to the LPG vapor pressure close to the atmospheric pressure can be obtained, so that the temperature and pressure drop sharply to prevent an increase in the internal pressure of the storage tank 838 to prevent the explosion of the storage tank 838. Prevent and remove LPG by combustion Which will be open for digestion.

As described above, the present invention can not form a conduit at the outlet of the fluid in the case of a closed sprinkler head and soluble, but the thermally open valve has the effect of forming a conduit at the outlet of the fluid, the soluble before overcharging However, in the case of the old container, when the available solvent is not sufficiently melted and exposed to high temperature, the container may rupture, that is, it does not work. However, the thermally open valve is opened by the heat sensing unit when it is exposed to high temperature, and the heat sensing unit is heated. When the internal pressure of the container rises due to the failure of detection, the glass bulb ruptures under the pressure test pressure of the container, and the thermally open valve is opened, thereby enabling the function of the pre-availability and the function of the bursting disc to be performed simultaneously. In operation, a thin sheet of debris is present in the passage, but a thermally open valve There is an effect that cannot flow into the passage, and the rupture plate malfunctions due to the creep of the sheet, fatigue, and unevenness of the material, but the glass bulb of the glass bulb type thermally open valve is used as the thermal element of the glass bulb type closed sprinkler head. It is supplied in large quantities, but there is no malfunction. The glass bulb-type thermal open valve that uses the glass bulb as a heat sensing part has no malfunction, and the spring type safety valve is operated by the spring's resistance when it releases fluid. Although the discharge flow rate has a disadvantage, the thermally open valve has an effect that there is no spring or similar resistor inside the thermally open valve when the fluid is released to release the fluid, and the closed sprinkler in the sprinkler fire extinguishing system using the closed sprinkler head. Piping, hangers, ducts, fixtures at the installation position of the head If there is an obstacle that prevents the sprinkling pattern formation, such as a sphere or beam, install a thermal open valve at the installation position of the closed sprinkler head, install a curved pipe at the valve outlet of the thermal open valve, and install an open sprinkler head at the end of the curved pipe. It is effective to prevent the performance deterioration of sprinkler fire extinguishing equipment by making normal fire detection and normal sprinkling pattern formation, and installed in electric facilities such as electric room, communication equipment room, computer room in sprinkler fire extinguishing equipment using closed sprinkler head. By installing a thermally open valve in the sprinkler pipe, installing a curved pipe at the outlet of the thermally open valve, and installing a water spray head at the end of the curved pipe, it is effective to detect a normal fire and to form a normal water spray pattern.

LPG tank lorry can automatically prevent the explosion when LPG tank lorry is caught in flames during operation of LPG tank lorry or LPG charging station.

It is effective to prevent damage caused by malfunction by installing thermal open valve in series in LPG tank lorry, and it heats the branch pipe branched from the pipe through which the extinguishing agent of automatic fire extinguishing equipment such as fire extinguishing equipment, non-combustible gas extinguishing equipment flows. When an open valve is installed, a curved pipe is installed at the outlet of the thermally open valve, and a spray head used in the fire extinguishing facility is installed at the end of the curved pipe, the fire is automatically detected at the place where the fire occurs and the extinguishing agent is released. By releasing the extinguishing agent only in the place where the fire occurred, it is effective to prevent damage caused by the release of a large amount of extinguishing agent

Claims (6)

The center lines of the valve inlet 119 and the valve outlet 120 are perpendicular to each other, and a tapered female thread is formed at the valve inlet 119 and the valve outlet 120, and the disk opening 118 is perpendicular to the upper center of the valve inlet 119. ), A male threaded frame engaging portion 113-3 is formed on the outer circumferential surface of the opposite upper end of the valve inlet 119, and a gasket groove 113-2 is provided inside the upper upper end of the valve inlet 119. ) And a valve body 113 having a female threaded cover engaging portion 113-3 formed at an inner central portion in contact with a gasket groove, and protruding from an upper end of a disk opening 118 of the valve body 113. An outer circumferential surface coupled to a disc site 117, a gasket 110 inserted into a gasket groove 113-2 of the valve body 113, and a cover engaging portion 113-3 of the valve body 113. A valve body engaging portion 109-5, which is externally threaded, is formed on the lower portion, and protrudes from the upper outer circumferential surface of the valve body engaging portion 109-5. A gasket pressing portion 109-3 is formed, and a hexagonal surface 109-2 is formed to fasten the valve body engaging portion 109-5 to the upper outer peripheral surface of the gasket pressing portion 109-3. (109-2) A cap and a valve stem support portion 109-1 are formed in the upper portion, a valve stem penetration portion 109-7 is formed in the inner center portion, and an O-ring groove ( 109-6 and a cover 109 having a spring chamber 109-4 formed above the valve stem penetrating portion 109-7, and inserted into the O-ring groove 109-6 of the cover 109. The O-ring 111, the spring 108 inserted into the spring chamber 109-4 of the cover 109, and the disc packing insert 115-1 in close contact with the disc sheet 117. The formed disk 115, the disk packing 116 inserted into the disk packing inserting portion 115-1 below the disk 115, and the valve stem penetrating portion 109-7 of the lid 109. It penetrates and is formed integrally with the disk 115, and has an external thread on the outer circumferential surface of the upper end. A valve cap 112 having a processed cap coupling portion 112-1, and having a heat sensing portion insertion groove 112-2 formed at an inner central portion of the upper end thereof, and a cap coupling portion of the valve stem 112 ( 112-1), the cap 109 of the cover 109 and the insertion portion 107-1 of the valve stem support portion 109-1 is formed in the inner lower portion, the valve stem coupling portion (37) 107-2 is formed through the upper end of the silicone O-ring 122 and the valve stem 112 is inserted into the cap and valve stem support portion 109-1 of the cover 109 and the cover 109 The valve body coupling portion 106-1, which is coupled to the bag packing 114 adhered to the upper end of the disk 115, and the frame coupling portion 113-1 of the valve body 113, and which has a female thread processed on the inner lower portion thereof, And insert the gasket pressing portion 106-5 of the gasket pressing portion 109-3 of the cover 109 on the valve body engaging portion 106-1, and the insertion portion 106-of the gasket pressing portion 106-1. 5) on both sides of the top frame (10 6-2), the upper frame 106-4 is formed on the upper portion of the frame 106-2, and the fixed screw coupling portion 106-3 formed with the female thread on the inner central portion of the outer frame 106-4. Frame 106 formed at two upper surfaces to open to the atmosphere, a fixing screw 101 coupled to a fixing screw coupling portion 106-3 of the frame 106 and the upper frame 106-4, and the And a heat sensing portion inserted between the fixing screw 101 and the heat sensing portion inserting groove 112-2 of the valve stem 112. According to claim 1, wherein the bottom of the heat sensing unit open to the atmosphere hollow hollow fusible material receiver 102, the fusible material and the inclined guide plate insertion portion 102-1 of the fusible material receiver 102 Inclined to form a disk column 104-1 on the disk 104-3, the disk pillar 104-1 eccentric to the disk 104-3, and to form a space retaining rod insertion groove 104-2 at the inner center of the lower end of the disk 104-3. The gap between the induction plate 104, the fusible material of the fusible material receiving 102 and the fusible material 103 inserted into the inclined guide plate inserting portion 102-1, and the inclined guide plate 104 A fusible-link thermally open valve, which is inserted into the holding rod inserting groove 104-2 and comprises a spacing holding rod 105 formed in a hemispherical shape at the top and bottom of the cylinder. The glass bulb type thermally open valve according to claim 1, wherein the heat sensing portion is formed of a glass bulb (121) sealed by putting a liquid in a glass sphere. The method according to any one of claims 1 to 3 Sprinkler pipe 241 of the sprinkler fire extinguishing system, a branch pipe 242 branched from the sprinkler pipe 241, a thermally open valve 243 provided at the end of the branch pipe 242, and the thermally open valve ( 243), and a thermally open valve and a sprinkling pattern forming apparatus using the same, comprising a curved pipe 244 installed at an outlet of the curved pipe 244, and an open sprinkler head 245 mounted at an end of the curved pipe 244. The method according to any one of claims 1 to 3 Sprinkler pipe 246 of the sprinkler fire extinguishing system, a branch pipe 247 branched from the sprinkler pipe 246, a thermal open valve 248 provided at the end of the branch pipe 247, and the thermal open valve A heat-opening valve and a water spray pattern forming apparatus using the same, comprising a curved pipe 249 installed at an outlet of 248 and a water spray head 250 provided at an end of the curved pipe 249. The method of claim 3, LPG storage tank 838 installed in the Laurie, an internal pipe 840 installed inside the storage tank 838, a control valve 846 provided at the exit of the internal pipe 840, and An inlet-side main pipe 847 of the glass bulb type thermally open valves 836, 837, and 848 having an operating temperature of 92 [deg.] C and an operating pressure of 23 [kgf / cm &lt; 2 &gt; On the outlet side of the glass bulb type thermally open valves 836, 837, and 848 provided at the outlet of the inlet-side main pipe 847 of the thermosensitive valve, and on the outlet side of the glass bulb type thermally open valves 836, 837, and 848. The outlet side main pipe 851 of the glass bulb type thermally open valve, the stop valve 834 provided in the outlet side main pipe 851 of the glass bulb type thermally open valve, and the outlet side of the glass bulb type thermally open valve. Stop valve 835 provided at branch pipe branched from main pipe 851, and union provided at outlet of said stop valve 835. A glass bulb type thermally open valve 831 having an operating temperature of 92 [deg.] C. and a working pressure of 17 [kgf / cm &lt; 2 &gt;] provided at an end of the main pipe 851 of the outlet side of the glass bulb type thermally open valve; A discharge tube 833 provided at an outlet side of the glass bulb type thermally open valve 831, a cap 832 provided at an end of the discharge tube 833, and a gaseous phase portion of the storage tank 838. A spring type safety valve 839 having a set pressure of 18 [kgf / cm 2], a loading arm 849 coupled to the union 850 and installed at an LPG filling station, and installed at an outlet of the loading arm 849. A tank lorry protective tube 852, a control valve 842 provided in the tank lorry protective tube 852, a liquid separation tube 852 branched from the tank lorry protective tube 852, and the tank lorry protective tube 852. A combustor 844 provided at the end of the combustion chamber, an ignition torch 843 for ignition of the combustor 844, a propane container 845 that is a fuel of the ignition torch 843, and the ignition The torch (843) and Propane container 845 gaebangsik heat-sensitive valve and LPG tank automatically explosion-proof apparatus using the same characterized in that comprises a stop valve (841) installed in the pipe connecting the.