JP2007009380A - Superheated steam protective clothing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide superheated steam protective clothing for protecting the human body from a superheated steam spouting accident from a high-pressure steam line or a container, and excellent in heat resistance, thermal insulation properties and waterproof properties. <P>SOLUTION: The superheated steam protective clothing TBOY is composed of a dress material layer 2, a middle layer 3 and a lining layer 4. The dress material layer 2 is obtained by coating a heat resistant and waterproof film 6 with heat resistance of ≥150°C on the surface of a meta aramid fiber fabric, the middle layer 3 comprises soft heat resistant fiber felt 10, and the lining layer 4 comprises a woven fabric. The superheated steam protective clothing TBOY is made of a protective fabric 1 which is obtained by forming each layer of the three-layer structure fabric to an appropriate thickness and whose reverse temperature becomes ≤45°C when spraying 180°C superheated steam to the surface of the fabric for 10 min. The superheated steam protective clothing TBOY is composed of overalls 13 and a hood 14. The hood 14 has a flap 32 below a head protective helmet 31, and there is no space formed between the flap 32 and the overalls 13 so as to protect both of them from superheated steam intrusion. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a superheated steam protective suit for protecting a human body against an accident of jetting superheated steam from a high pressure steam pipe or a container.

  In recent years, there have been accidents in which workers or inspectors who work near high-pressure steam pipes, etc. encounter a sudden superheated steam ejection accident from the high-pressure steam pipes and are burned.

  Despite the fact that there are many heat-resistant protective suits such as fire-fighting suits, there has been no superheated steam protective suit for such a superheated steam jet accident.

As heat-resistant protective clothing such as fire-fighting clothing, there has long been known that aluminum is vapor-deposited on a base fabric in order to reflect radiant heat. However, aluminum vapor deposition has a drawback that it easily peels off. As countermeasures, Japanese Utility Model Publication No. 62-34765 and Utility Registration No. 3090780 propose to bond a polymer film layer in order to protect the aluminum deposition surface. However, when the polymer film layer is bonded to protect the aluminum deposition surface, there is a drawback that the texture is deteriorated and the comfort is hindered.
Also, Japanese Utility Model Publication No. 45-2552 proposes a protective clothing for a fire-resistant fabric in which a fire-resistant artificial rubber or the like in which aluminum powder or the like is mixed is formed on the surface of the fabric. However, in this publication, neoprene is used as an artificial rubber. Even though this neoprene has a heat resistance of about 100 ° C. and is excellent as a fire fighting suit, 180 ° C. superheated steam continues for 10 minutes because it has no heat resistance. When sprayed, there is a possibility of thermal degradation and partial destruction. As the overheated steam protective clothing, fire resistance is not required, heat resistance and heat insulation are required, and the publication does not indicate that.

  The above three publications are fire fighting suits and have the effect of reflecting radiant heat. However, since the heat insulation is small, when 180 ° C superheated steam is blown, the heat is passed through the fire fighting suits and burns. is there.

In Japanese Patent Application Laid-Open No. 2002-115106, a surface layer is composed of meta-aramid fibers and para-aramid fibers, and an intermediate layer on which an inorganic compound such as aluminum is supported and water-repellent is processed. There has been proposed a heat-resistant protective clothing having a moisture and waterproof property and comprising a woven or knitted fabric having an air amount V of 0.07 cm or more as a heat shielding layer. This heat-resistant protective clothing is excellent in chemical resistance and waterproofness, but it is moisture permeable, so if 180 ° C superheated steam is sprayed, the superheated steam may penetrate into the protective clothing and cause burns. .
Japanese Utility Model Publication No. 62-34765 Utility registration No. 3090780 Japanese Utility Model Publication No. 45-2552 JP 2002-115106 A

 An object of the present invention is to solve the above-mentioned problems and to protect a human body against a sudden overheating steam blowing accident from a high-pressure steam pipe or a container or the like, superheated steam excellent in heat resistance, heat insulation and waterproofness To provide protective clothing.

 The present invention has been achieved as a result of intensive studies to solve the above problems.

  That is, the present invention is a superheated steam protective suit for protecting a human body such as a worker against a superheated steam jet accident from a high pressure steam pipe or a container, and is composed of a surface layer, an intermediate layer, and a back layer. The surface layer is formed by coating a heat-resistant waterproof film with a coating material having a heat resistance of 150 ° C. or more on the surface of the meta-aramid fiber fabric, the intermediate layer is formed of a soft heat-resistant fiber felt, and the backing layer is a fabric. By forming each layer of the three-layer structure fabric to an appropriate thickness, the temperature of the back surface of the protective fabric becomes 45 ° C. or less when 180 ° C. superheated steam is blown on the surface of the fabric for 10 minutes. It is characterized by being a protective fabric.

  Since the fabric of the present invention forms a heat-resistant waterproof coating using a coating material having a heat resistance of 150 ° C. or higher on the surface of the meta-aramid fiber, 180 ° C. overheated steam may be blocked and raw steam may enter the inner layer. Absent. Here, heat resistance of 150 ° C. means heat resistance under normal rubber test conditions, and means that the strength does not halve at 150 ° C. for 72 hours. Accordingly, durability of 150 ° C. × 72 hours is expected to be 36 hours at 160 ° C., 18 hours at 170 ° C., and 9 hours at 180 ° C. In fact, if it is about 200 ° C. for about 10 minutes, the steam can be shut off without any change.

  Since the meta-aramid fiber is used for the thickness of the fabric, it can be manufactured as thin and light as about 0.3 to 0.5 mm. The coating film is formed as thin as possible within a range that does not impair waterproofness. Specifically, it may be determined whether or not the outermost surface position is about 0.1 mm in a state in which the woven fabric of the meta-aramid fiber is sufficiently impregnated. If the thickness is larger than that, the weight of the material becomes large, and the overall weight also becomes large, and the workability becomes particularly worse. In terms of weight, the fire fighting suit shown in the prior art is helpful. The work clothes of the present invention must have the same weight as the fire fighting clothes despite the fact that the heat insulation is much better than the conventional fire fighting clothes. This can be achieved by using a meta-aramid fiber excellent in strength, heat resistance and heat insulation or soft heat-resistant fiber felt. It is also effective to place a pile or a thin gauze layer on the back surface of the aramid fiber fabric of the outer layer.

  The intermediate layer is composed of soft heat-resistant fiber felt in order to obtain sufficient heat insulation. The thickness is preferably 1.5 to 4.0 mm when no load is applied, and meta-aramid fibers are preferably used in order to obtain heat resistance and superior heat insulation. In general, when high-temperature steam of 180 ° C. is blown onto the surface layer for 10 minutes, the surface temperature of the surface layer increases to 100 ° C. In particular, the jet steam from a close distance may become superheated steam and instantaneously rise to about 150 ° C. Therefore, it is preferable that the surface layer is made of a material having a heat resistance of 150 ° C. or higher. Thus, although the surface temperature rises, since the heat-resistant fiber felt is used for the intermediate layer, the heat flow rate to the intermediate layer is particularly bad, and the surface temperature of the backing layer is 45% with respect to the mannequin temperature (about 25 ° C.). Do not exceed ℃. It shows that the heat flow does not exceed the amount of heat absorption based on the heat capacity of the mannequin. Therefore, it can be specified that the fabric of the present invention can withstand overheated steam at 180 ° C. × 10 minutes.

  In addition, the present invention related to tailoring using the fabric of the present invention is a superheated steam protective suit for protecting a human body such as an operator against a superheated steam jetting accident, comprising pants, a jacket, a hood, The trousers and the outerwear are integrated coveralls, the hood has a sag under the helmet for protecting the head, and between the sag and the tiepatch, the superheated steam enters from above and from below It is characterized in that it is configured without a gap so as to prevent both intrusions.

  The present invention is composed of a coverall and a hood, and can be safely worn as a newly proposed superheated steam protective suit by not creating a gap between which steam can be directly blown. Incidentally, when high-temperature steam enters the body through the gap between the fabrics and comes into contact with the body, it is burned instantly, so it cannot be made protective clothing. Further, since the steam blown out from the steam pipe has a property of being reflected excessively by the floor surface, it is necessary to consider blowing up from the floor surface. As a method of eliminating the gap, it is not always necessary to seal, but it is possible not only to superimpose both sides but also to firmly fix it using a hook-and-loop fastener and hook or to prevent direct invasion by folding it back. . Thereby, the superheated steam protective clothing of the present invention can be a protective clothing that can stay for at least 10 minutes in the superheated steam blowing environment.

  Since the present invention is a superheated steam protective suit as described in the claims, it has the following effects.

  The present invention uses a surface layer formed by thinly coating a heat-resistant waterproof film with a coating material having a heat resistance of 150 ° C. or more on the surface of the meta-aramid fiber fabric, and the surface of the surface layer is 180 ° C. When the superheated steam is blown for 10 minutes, the heat does not deteriorate and the waterproof property is excellent, and the superheated steam does not permeate the surface layer.

  The protective fabric used in the present invention is a protective fabric having a three-layer structure in which the surface layer and the lining layer composed of a woven fabric are laminated on both sides of a heat insulating intermediate layer made of soft heat-resistant fiber felt. By appropriately forming the thickness of each layer of the fabric, particularly the thickness of the soft heat-resistant fiber felt, the heat flow rate was suppressed, and 180 ° C. superheated steam was sprayed on the surface of the protective fabric for 10 minutes. Sometimes, the temperature of the back surface of the protective fabric can be 45 ° C. or lower, and the comfort is not impaired.

  The heat insulating intermediate layer is made of soft heat-resistant fiber felt and is weak against friction. Therefore, a three-layer protective fabric resistant to friction can be obtained by laminating a backing layer made of woven fabric.

  The superheated steam protective clothing of the present invention comprises trousers, a jacket, and a hood, wherein the trousers and the jacket are integrated coveralls, and the hood includes a sag under a helmet for protecting the head, the sag and the sword Since there is no gap between the cover clothes to prevent both the intrusion of the superheated steam from the upper side and the lower side from entering, the superheated steam suddenly ejected from the high-pressure steam pipe or container is sprayed on the human body. Even if this is done, the superheated steam does not enter the protective clothing, and the human body can be safely protected.

  The best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view showing an embodiment of a protective fabric used in the superheated steam protective garment of the present invention, and FIG. 2 is an enlarged cross-sectional view of part A of FIG. The protective fabric 1 includes a surface layer 2, a heat insulating intermediate layer 3, and a backing layer 4.

The surface layer 2 is formed by thinly coating the surface of the meta-aramid fiber fabric 5 with a heat-resistant waterproof coating 6 with a coating material having a heat resistance of 150 ° C. or higher according to a rubber test method. The meta-aramid fiber fabric 5 is preferably a polymetaphenylene isophthalamide fiber fabric having a basis weight of 100 to 200 g / m ² , for example. When the basis weight is less than 100 g / m ² , it is not preferable from the viewpoint of strength and coating properties. Conversely, when the basis weight exceeds 200 g / m ² , the weight is increased, which is not preferable. As the coating material, it is preferable to use a synthetic rubber having a heat resistance of 150 ° C. or higher, or a thermoplastic resin having a softening point of 200 ° C. or higher, and chlorosulfonated polyethylene is particularly preferable. Chlorosulfonated polyethylene has good heat resistance and elastic modulus, and also has good affinity with the meta-aramid fiber woven fabric. It has the effect of penetrating and improving adhesive strength. When the coating material is coated with a heat diffusion material 9 such as metal powder having a good thermal conductivity, for example, 8 to 20% by weight of aluminum powder, the heat diffusion material 9 is heated even if superheated steam is blown. Therefore, the effect of reducing the heat conduction to the inside of the protective fabric 1 can be expected. The coating amount of the heat-resistant waterproof coating 6 is adjusted to about 500 g / m ² or less, preferably 400 g / m ² or less including the meta-aramid fiber fabric and the heat diffusion material 9.

  As for the coating, it is preferable to completely infiltrate the coating material into the woven fabric in order to increase the adhesive force. However, this increases the weight (weight per unit area). Therefore, it is preferable to penetrate to the center of the fabric. It is desirable to weave as thin as possible and to coat as thin as possible within the range where the required strength can be maintained.

The heat insulation intermediate layer 3 is formed in a sandwich shape by disposing soft heat-resistant fiber felts 10 and ultrathin nonwoven fabrics 11 and 12 above and below them. It can be said that it is preferable that all of the three nonwoven fabrics are composed of meta-aramid fibers, for example, the polymetaphenylene isophthalamide fibers described above, because heat resistance and heat insulation are improved. Thus, the heat flow rate of heat can be limited by increasing the number of nonwoven fabrics. Para-aramid fibers also have good heat resistance and strength, but meta-aramid fibers are superior in terms of heat insulation. The thickness of the soft heat-resistant fiber felt 10 is preferably 1.3 to 4.0 mm when unloaded and the apparent specific gravity is selected from the range of 0.15 to 0.35. When the thickness is reduced, the heat insulation effect is reduced, but the weight is reduced. When the thickness is increased, the heat insulation effect is improved, but it is heavy. Also, if the apparent specific gravity is increased, it becomes heavier and costly.If the apparent specific gravity is decreased, the heat insulation effect can be obtained with a small amount of fiber including a large amount of air. Become. It is better to determine the optimum thickness and apparent specific gravity by trial and error. Moreover, it is good to make it the sandwich form by the ultra-thin nonwoven fabrics 11 and 12, and to improve the heat insulation effect, and to make the total fabric weight of these 3 sheets into 130-200 g / m < ² >.

Since the heat insulation intermediate layer 3 is made of three nonwoven fabrics and is susceptible to slippage due to friction, it is preferable that the lining layer 4 made of a woven fabric is overlapped and quilted to prevent slippage between the layers. The backing layer 4 is preferably a high-strength yarn spun yarn having a fabric weight of 130 to 260 g / m ² and a thin woven fabric. In this embodiment, a meta-aramid having excellent heat resistance (for example, the aforementioned aramid) (Polymetaphenylene isophthalamide fibers) and flame-retardant rayon staple fibers.

By appropriately forming each layer of the three-layer structure fabric including the woven fabric of the backing layer 4 to an appropriate thickness, particularly the thickness of the heat-resistant fiber felt 10, 180 ° C. superheated steam is applied to the surface of the fabric for 10 minutes. The temperature of the back surface of the protective fabric when sprayed can be a protective fabric having a temperature of 45 ° C. or lower. With the protective fabric 1 having the above configuration, even when 180 ° C. superheated steam is continuously sprayed on the surface, The back surface temperature can be hardly increased. However, this does not apply when a heat insulating material that does not absorb any heat is disposed on the back surface. This is because the temperature rises due to the heat flow. However, since the human body (temperature of 36.5 ° C.) absorbs heat at a temperature higher than that, the back surface temperature rise of the protective fabric 1 is suppressed by a small amount of heat absorption. There is no further problem when air is supplied into the clothes.

  FIG. 3 is a front view of an operator shown with a superheated steam protective suit according to an embodiment of the present invention. FIG. 4 is a rear view of the operator of FIG. FIG. 5 is a side cross-sectional view showing the joint between the hood and the coverall in a state where the overheated steam protective clothing TBOY according to one embodiment of the present invention is worn. FIG. 6 is an enlarged cross-sectional view of a portion corresponding to the arrow F6-F6 in FIG.

  First, in terms of a tailoring system for the superheated steam protective clothing TBOY of the present invention, the superheated steam protective clothing TBOY of the present invention consists of a coverall 13 and a hood 14. The coverall 13 is composed of trousers and an outerwear, and the trousers and the outerwear are integrated, and there are cuffs 15 of both hands, hems 16 of both feet, five portions of the neck, and an opening / closing portion 17 for attachment / detachment. These openings do not necessarily need to be completely sealed, but they are not only overlapped on both sides, but are also firmly fixed using hooks or fasteners, preferably hook-and-loop fasteners, or folded to prevent direct entry. It may be in shape. For example, the cuffs 15 of both hands and the hems 16 of both feet may be squeezed into a hook or a fastener, preferably a hook-and-loop fastener, or a narrowed part with a rubber string sewn inside the cuff or hem. Synthetic rubberized cloth with excellent heat resistance and heat insulation of commercially available products (preferably the same cloth as the above-mentioned protective fabric) Gloves 18 is worn on both hands, and boots 19 with excellent heat resistance and heat insulation of commercial products are on both feet. It should just be a structure that can be worn and adhered from above. By adopting such a configuration, even if the superheated steam 22 ejected from the steam ejection hole 21 of the high-pressure steam pipe 20 hits the floor surface 23 and rebounds or reverses in the middle to become an updraft, the cuff 15 of the coverall 13 is formed. Further, it is possible to prevent the hem 16 from entering the superheated steam protective clothing TBOY.

  As shown in FIG. 4, the cover 13 is formed with a detachable opening / closing portion 17 linearly from the rear neck 24 to the rear waist 25, and is fixed to the detachable opening / closing portion 17 with a fastener, preferably a hook-and-loop fastener. Tailored to structure. Therefore, even if the superheated steam 22 is blown onto the attaching / detaching opening / closing part 17 fixed with a fastener, preferably a hook-and-loop fastener, the steam does not easily enter the superheated steam protective clothing TBOY. However, as shown in FIG. 6, one end portion 26 of the attaching / detaching opening / closing portion 17 is a double-sided fastener 27, and the other end portion 28 of the attaching / detaching opening / closing portion 17 is attached with a fastener presser 29 that sandwiches the end face of the one end portion 26. If both sides are closed, the attachment / detachment opening / closing part 17 is fixed without gaps, and the structure is such that superheated steam cannot enter the interior, which is preferable because safety is doubled. It should be noted that the opening / closing part 17 for attaching / detaching the coverall 13 is formed in a straight line from the front neck part to the front waist part, so that the work of attaching and detaching the protective clothes and the fastener operation are easier, but from the rear neck part 24 to the rear waist part as described above. It can be said that it is safer to form a straight line up to 25 with less damage to steam injection.

  The hood 14 includes a head protection helmet, preferably a full-face helmet 31 having a cushion 30 therein, and a sagging 32 made of the protective fabric, between the sagging 32 and the coversuit 13. In order to prevent the intrusion of the superheated steam, there is no gap. In FIG. 5, the sag 32 is inserted inside the upper end of the coverall 13 and closed with a hook-and-loop fastener. Further, attaching a fastener presser 33 around the neck of the sag 32, making the upper end of the cover garment 13 a double-sided fastener, and closing both sides with the neck of the sag 32 and the fastener presser 33 is a detachable opening / closing part for the tie cover 13 It can be said that it is preferable for the same reason as FIG.

  In addition, since it has a folded structure when using the above-mentioned fastener pressers 29 and 33, it is not always necessary to use a hook-and-loop fastener, and the use of ordinary fasteners or hooks can prevent the entry of overheated steam. Can do.

  The superheated steam protective clothing TBOY of the present invention is tailored as described above, but if the sewing machine needle hole at the time of sewing is crushed with a heat-resistant waterproofing agent, the sprayed vapor will penetrate into the sewing machine needle hole. It is possible to prevent a part of the vapor from entering the back of the protective clothing.

  Further, as described above, the superheated steam protective clothing TBOY of the present invention is prepared from the protective fabric 1 having excellent heat insulation properties and is configured without a gap to prevent the intrusion of the superheated steam. Then, it becomes hot even in winter, and it may become difficult to breathe when working hard, so it is preferable to supply air or oxygen inside the clothes.

  Next, the wearing procedure of the superheated steam protective clothing TBOY of the present invention is shown. First, the hood 14 shown in FIG. 5 is worn on the head, and the opening / closing part 17 for attaching / detaching the coverwear 13 shown in FIG. Insert into the trousers, pull up the jacket and insert both hands into the sleeves. Next, the droop 32 of the hood 14 is covered with the upper part of the cover 13, the hook-and-loop fastener 17 of the attachment / detachment opening / closing part 17 is closed from below, and the upper part of the droop 32 and the cover 13 is fixed with the hook-and-loop fastener. The zipper presser 33 is used to hold the neckline of the coverall 13 and fix it. Next, a synthetic rubber-coated cloth glove 18 having excellent heat resistance or a boot 19 having excellent heat resistance and heat insulation is worn, and both the cuffs 15 and both hems 16 of the coverall 13 are fixed while being squeezed with a hook-and-loop fastener. The wear is complete. Thus, since the superheated steam protective clothing TBOY comprising the coverall 13 and the hood 14 is configured without a gap, both the intrusion from the upper side and the intrusion from the lower side of the superheated steam ejected from the high-pressure steam pipe or container is prevented. And can safely protect the human body from burns.

  Next, the high-pressure steam piping site will be described. Generally, there are many types of steam used in factories: low pressure steam of about 0.3 MPa and high pressure steam of about 1.0 MPa. Since high-pressure steam is more dangerous than low-pressure steam, here, 1.0 MPa high-pressure steam will be described. The temperature of the high-pressure saturated steam of 1.0 MPa is about 180 ° C., and the high-pressure steam pipe is usually stretched about 2.5 to 3.0 m above the floor surface. The pipes are vertically connected from above. Therefore, the accident of jetting superheated steam often occurs when the high-pressure steam pipe stretched upward corrodes and has holes due to long-term use. FIG. 2 is also a diagram assuming such an accident. It is assumed that a part of the high-pressure steam pipe 20 is corroded and a steam ejection hole 21 having a diameter of 9 mm is opened, and the steam ejection hole 21 suddenly ejected. Steam 22 happens to be underneath and is sprayed on the worker wearing the superheated steam protective suit TBOY. Assuming that there is a distance of 1 m from the steam ejection hole 21 to the shoulder portion of the superheated steam protective clothing TBOY of the worker, when high-temperature steam 22 of 180 ° C. is sprayed on the shoulder portion of the protective clothing TBOY for 10 minutes, The surface temperature of the formation rises to 100 ° C. Nevertheless, since the superheated steam protective clothing TBOY of the present invention has an excellent heat insulating effect, the surface temperature of the backing layer 4 does not exceed 45 ° C. The superheated steam 22 ejected from the steam ejection hole 21 covers the worker completely, and a part of the steam surpasses the floor surface and becomes an ascending current. In such a situation, as described above, the superheated steam protective clothing TBOY is configured without a gap so as to prevent both intrusion from the upper side and intrusion from the lower side. This prevents the intrusion of the inside of the inside, prevents the raw steam from entering the inner layer, and can completely protect the human body from burns.

Examples of the steam ejection test are as follows. In this embodiment, a superheated steam protective suit TBOY prepared using the protective fabric 1 shown in FIG. 1 created under the conditions shown in Table 1 is worn on a mannequin preheated in advance to a human body temperature, and a 9 mmφ hole faces downward. The mannequin was installed so that the left shoulder of the mannequin was positioned 1 m below the high-pressure steam pipe drilled in the pipe, and high-pressure steam having a pipe internal pressure of 1.0 MPa and a temperature of 180 ° C. was flown out of the hole and sprayed on the left shoulder of the mannequin. FIG. 7 shows the time-dependent change measurement results and burn estimation results of the mannequin left shoulder skin surface temperature.

  As is clear from FIG. 7, even when 180 ° C. superheated steam is ejected from the high-pressure steam pipe and sprayed on the left shoulder of the mannequin wearing the superheated steam protective suit of the present invention, the mannequin's left shoulder skin surface temperature is 600 seconds later. The temperature rises only to 45 ° C., and there is a 700 second delay before the burn becomes red once, and it can be seen that evacuation can be made sufficiently during that period.

  The present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented without departing from the gist of the present invention.

It is sectional drawing which shows one Embodiment of the protection fabric used for the superheated steam protective clothing of this invention. It is the A section expanded sectional view of FIG. It is a front view of the operator shown in the state where the superheated steam protective suit concerning one embodiment of the present invention was put on. It is a rear view of the operator of FIG. It is a sectional side view which shows the junction part of the hood part and the coverall in the state which wore the overheated steam protective clothing concerning one Embodiment of this invention. FIG. 5 is an enlarged cross-sectional view of a portion corresponding to an F6-F6 arrow view of FIG. 4. It is a graph which shows the mannequin skin temperature inside the protective fabric surface which the jetted steam hit, and a burn estimation result.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Protective fabric 2 Surface layer 3 Thermal insulation intermediate layer 4 Lining layer 5 Meta system aramid fiber fabric 6 Heat-resistant waterproof coating 7 Penetration part 8 Interface 9 Heat diffusion material 10 Heat-resistant fiber felt 11, 12 Non-woven fabric 13 Cover clothes 14 Head width 15 Cuffs 16 Bottom 17 Detachable opening / closing part 18 Gloves 19 Boots
20 High-pressure steam piping 21 Steam outlet
DESCRIPTION OF SYMBOLS 22 Superheated steam 23 Floor 24 Rear neck part 25 Back waist part 26 One end part of attachment / detachment opening / closing part 27 Double-sided fastener 28 The other end part of attachment / detachment opening / closing part
29 Fastener press 30 Cushion 31 Helmet 32 Droop 33 Fastener press TBOY Superheated steam protection suit

Claims (2)

  Superheated steam protective clothing to protect human bodies such as workers from a superheated steam jet accident from high-pressure steam piping or containers, which consists of a surface layer, an intermediate layer, and a back layer. The surface of the aramid fiber fabric is coated with a heat-resistant waterproof coating with a coating material having a heat resistance of 150 ° C. or more, the intermediate layer is composed of a soft heat-resistant fiber felt, the backing layer is composed of a fabric, and these three-layer structures By forming each layer of the fabric to an appropriate thickness, when the superheated steam at 180 ° C. is sprayed on the surface of the fabric for 10 minutes, the temperature of the back surface of the protective fabric is 45 ° C. or less. And overheated steam protective clothing. A superheated steam protective suit for protecting a human body such as an operator against a superheated steam jetting accident, comprising trousers, a jacket, and a hood, wherein the trousers and the jacket are integrated coveralls, The head protection helmet is provided with a sag underneath, and the sag and the coverall are configured without a gap so as to prevent both the entry of the superheated steam from the upper side and the entry from the lower side. The overheated steam protective suit according to claim 1.

Images