Protective garment capable of preventing high-temperature liquid and steam

Abstract

The invention belongs to the field of protective clothing, and particularly relates to a protective clothing capable of preventing high-temperature liquid and steam, which comprises a protective clothing body, and a protective head cover, protective gloves and protective boots which are detachably and hermetically connected with the protective clothing body, wherein the protective clothing body is of a one-piece structure; a face mask and a respirator are arranged at the front part of the protective hood; the protective garment body and the protective hood are both made of composite fabric capable of preventing high-temperature liquid and steam, and each composite fabric comprises a steam blocking layer, a heat insulation middle layer and an inner layer which are sequentially arranged. The protective clothing is good in protective effect and low in cost.

Description

Technical Field

[0001] The invention belongs to the field of protective clothing, and in particular relates to protective clothing for protection against high-temperature liquids and steam. Background Art

[0002] There are various heat disasters in life, such as high temperature fire, high temperature steam, and high temperature liquid splashing. In order to protect the lives of workers, high temperature protective clothing came into being. High temperature protective clothing is a protective equipment for workers in special construction environments such as steam and high temperature liquid splashing.

[0003] Commonly used high temperature resistant protective clothing is usually worn with the sleeves tucked into the protective gloves and the trouser legs tucked into the protective boots. When high temperature liquid splashes or sprays, the high temperature liquid will flow along the sleeves into the protective gloves and along the trouser legs into the protective boots, and then contact the exposed arm and calf skin, causing skin burns and even endangering life.

[0004] In the medical field, CN212545738U discloses a protective suit, including protective clothing and protective pants, one side of the protective clothing is provided with conductive silk, one side of the conductive silk is fixed with a PU hook, one side of the PU hook is installed with a permanent magnet, the side of the protective clothing is provided with a protective sleeve, the lower side of the protective sleeve is placed with a protective glove, the upper end of the protective glove is provided with a rubber tightening belt, the inner side of the protective sleeve is provided with a PU support ring near the rubber tightening belt, the two ends of the outer side of the PU support ring are fixed with bumps, and the lower side of the protective clothing is provided with protective pants. The protective clothing does not have protective boots, and the material is not suitable for high-temperature steam and liquid splash environments. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology and provide a protective clothing for high temperature liquids and steam with good protective effect and low cost. In order to solve the above technical problem, the technical solution proposed by the present invention is: a protective clothing for high temperature liquids and steam, comprising: A protective suit body, and a protective hood, protective gloves and protective boots which are detachably and sealably connected to the protective suit body; Wherein, the protective clothing body is a one-piece structure; The front part of the protective hood is provided with a mask and a respirator; The protective clothing body and the protective hood are both composite fabrics that are resistant to high-temperature liquids and steam, including a steam barrier layer, a heat-insulating middle layer, and an inner layer that are arranged in sequence; The steam barrier layer is composed of a blended fabric layer formed by chloronitrile, flame-retardant viscose and aramid fibers, and a PTFE film compounded on the inner side of the blended fabric layer; The heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-insulating fiber layer composited on the upper and lower surfaces of the porous vacuum silicon material layer; the porous vacuum silicon material layer is prepared by a vacuum cross-linking, gasification and high-pressure drying preparation process to prepare a porous oxidized vacuum silica material and a polymer skeleton material, and the heat-insulating fiber layer is a heat-insulating fiber plain cloth or a heat-insulating fiber felt; The inner layer is a fiber blended fabric layer formed by blending high temperature resistant flame retardant aramid fibers and flame retardant cotton fibers.

[0006] In one embodiment, a cooling vest comprises a vest body, and a plurality of pockets are provided on the inner back and both sides of the vest body, and the pockets are used to place reusable cooling ice packs made of phase change material.

[0007] In one embodiment, a circulation pipe is laid inside the cooling vest, and the circulation pipe is connected to a compression refrigerator. Cold air is delivered to the circulation pipe by the compression refrigerator. The compression refrigerator is detachably arranged on the back side of the cooling vest.

[0008] In one embodiment, a circulation pipe is laid inside the cooling vest, and the circulation pipe is connected to a semiconductor refrigeration module. The semiconductor refrigeration module is used to cool the water in the circulating water tank and then transport it to the circulation pipe. The semiconductor refrigeration module is connected to a portable power source.

[0009] In one embodiment, the blended fabric layer is woven from 40%-50% chloronitrile, 20%-30% flame retardant viscose and 20%-30% aramid fiber blended yarns in a mass ratio, and the unit area weight of the blended fabric layer is 170-190 g / m2 and the thickness is 0.5-0.7 mm; The porous vacuum silicon material layer has a thickness of 0.3-0.7 mm, a pore diameter of 10-40 nm, a porosity of >97%, a density of <0.03 g / ml, and a minimum thermal conductivity of 0.014 W / m·K; The fiber blended fabric layer is a pipe fabric woven from 65-75% meta-aramid fiber and 25-35% flame-retardant cotton fiber blended yarn according to a mass ratio, and the fiber blended fabric layer has a unit area weight of 180-220 g / m2 and a thickness of 0.5-0.7 mm; The skeleton material is an organic fiber material or an inorganic fiber material, the heat-resistant fiber plain cloth is an aramid plain cloth, a PPS plain cloth or a PBO plain cloth, and the heat-resistant fiber felt is an aramid fiber felt, a PPS fiber felt or a PBO fiber felt.

[0010] In one embodiment, the composite fabric resistant to high temperature liquids and steam has a second degree burn time of >1200s under the conditions of a water temperature of 95°C and a flow rate of 40±1mL / s, and a second degree burn time of >900s under the conditions of a steam temperature of 100°C and a steam pressure of 50kPa.

[0011] In one embodiment, the respirator is a positive pressure air respirator, comprising: Back support assembly, including shoulder and waist straps and bottle holder; The gas cylinder is placed in a bottle holder. A pressure reducing valve is provided at the gas outlet of the gas cylinder, which is connected to the protective mask through a high-pressure pipe. An air supply valve is provided at the air inlet of the protective mask.

[0012] In one embodiment, the protective head cover comprises a head cover body and an annular bib piece connected to the lower part of the head cover body. The lower part of the hood body and the collar of the protective clothing body are connected by a sealed waterproof zipper. The edge of the front part of the annular bib piece and the corresponding part of the front part of the protective clothing body are connected through at least one pair of mutually attracted magnetic blocks.

[0013] In one embodiment, the sleeves of the protective clothing body and the protective gloves, and the trouser legs of the protective clothing body and the protective boots are connected via a sealing connection structure. The sealing connection structure comprises a first annular clamping member and a second annular clamping member which are sealingly clamped to each other; The first annular engaging member is arranged in the corresponding sleeve and above the cuff, or in the corresponding trouser leg and above the trouser leg opening. The outer peripheral surface of the first annular engaging member is sealingly connected to the inner surface of the corresponding sleeve or trouser leg; The second annular engaging member is disposed in the glove opening of the corresponding protective glove or in the boot opening of the corresponding protective boot; The outer peripheral surface of the second annular engaging member is sealingly connected to the inner surface of the corresponding glove opening or the boot opening.

[0014] In one embodiment, the cuffs and the trouser legs are both provided with tightening parts, and the protective clothing body is provided with a diagonal placket from one shoulder to the other hip. The diagonal long placket is connected by a plurality of pairs of mutually bonded Velcros arranged in sequence from top to bottom, and the inner opening is covered by a waterproof zipper.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: in the protective clothing for preventing high-temperature liquids and steam provided by the present invention, the protective clothing body is a one-piece structure, and the connected protective hood, protective gloves and protective boots are all detachably sealed and connected. That is, the entire protective clothing realizes fully sealed overall protection, and the protective hood, protective gloves and protective boots are detachably connected, which is convenient to wear. More importantly, the sealed connection between the protective clothing body and the protective hood can effectively prevent the penetration of high-temperature liquids and steam, and provide all-round protection for the human body. The composite fabric for preventing high-temperature liquids and steam used in the protective clothing of the present application has three layers inside and outside, wherein the steam barrier layer is composed of a blended fabric layer of nitrile chloroform, flame-retardant viscose and aramid fibers and a PTFE film compounded on the inner side of the blended fabric layer; the heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-resistant fiber layer compounded on the upper and lower surfaces of the porous vacuum silicon material layer, and the inner layer is a fiber blended fabric layer formed by blending high-temperature resistant flame-retardant aramid fibers and flame-retardant cotton fibers. The composite fabric for protection against high-temperature liquids and steam formed by a multi-layer composite structure has very good resistance to high-temperature liquid and steam penetration, high temperature resistance and heat insulation functions, can be used in a high temperature environment of 95°C, and has good wearing comfort. Furthermore, the composite fabric for protection against high-temperature liquids and steam of the present application is cheap. Compared with the high-temperature liquid and steam protective fabric containing polyimide aerogel material, the price can be reduced by more than 50%. Therefore, it has better functions, lower prices, and is more suitable for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of a protective suit for protecting against high temperature liquids and steam according to an embodiment; Figure 2 It is a schematic structural diagram of a protective glove of a protective clothing for protection against high temperature liquid and steam according to an embodiment; Figure 3 The present invention is a schematic structural diagram of a cooling vest of a protective clothing for protecting against high temperature liquids and steam according to one embodiment. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0019] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0020] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0021] like Figure 1-3 As shown, in one embodiment, the protective clothing for protecting against high temperature liquids and steam comprises a protective clothing body 10, a protective hood 20, two protective gloves 30 and two protective boots 40. The protective clothing body 10 and the protective hood 20, the protective gloves 30 and the two protective boots 40 are all detachably sealed and connected. The protective clothing body 10 is a one-piece structure. A mask 23 and a respirator 24 are provided at the front of the protective hood 20.

[0022] Specifically, the protective clothing body 10 and the protective hood 20 are both composite fabrics that are resistant to high-temperature liquids and steam, including a steam barrier layer, a heat-insulating middle layer and an inner layer arranged in sequence; wherein the steam barrier layer is composed of a blended fabric layer formed by chloronitrile, flame-retardant viscose and aramid fibers, and a PTFE film compounded on the inner side of the blended fabric layer. Specifically, the heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-insulating fiber layer compounded on the upper and lower surfaces of the porous vacuum silicon material layer; the porous vacuum silicon material layer is prepared by a vacuum cross-linking gasification high-pressure drying preparation process to prepare a porous oxidized vacuum silica material and a polymer skeleton material, and the heat-insulating fiber layer is a heat-insulating fiber plain cloth or a heat-insulating fiber felt. The inner layer is a fiber blended fabric layer formed by blending high-temperature resistant flame-retardant aramid fibers and flame-retardant cotton fibers.

[0023] The protective clothing body 10 of the present application is a one-piece structure, and the connected protective hood 20, protective gloves 30 and protective boots 40 are all detachably sealed. That is, the entire protective clothing realizes fully sealed overall protection, and the protective hood, protective gloves and protective boots are detachably connected, which is convenient to wear. More importantly, the sealed connection between the protective clothing body 10 and the protective hood 20 can effectively prevent the penetration of high-temperature liquids and steam, and provide all-round protection for the human body. The composite fabric that is resistant to high-temperature liquids and steam has three layers inside and outside, wherein the steam barrier layer is composed of a blended fabric layer of nitrile chloroform, flame-retardant viscose and aramid fibers and a PTFE membrane compounded on the inner side of the blended fabric layer; the heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-resistant fiber layer compounded on the upper and lower surfaces of the porous vacuum silicon material layer, and the inner layer is a fiber blended fabric layer formed by blending high-temperature resistant flame-retardant aramid fibers and flame-retardant cotton fibers. The composite fabric for protection against high-temperature liquids and steam formed by a multi-layer composite structure has very good resistance to high-temperature liquid and steam penetration, high temperature resistance and heat insulation functions, can be used in a high temperature environment of 95°C, and has good wearing comfort. Furthermore, the composite fabric for protection against high-temperature liquids and steam of the present application is cheap. Compared with the high-temperature liquid and steam protective fabric containing polyimide aerogel material, the price can be reduced by more than 50%. Therefore, it has better functions, lower prices, and is more suitable for large-scale production.

[0024] Specifically, in one embodiment, the protective clothing body 10 has two sleeves 15 and two trouser legs 16. The two protective gloves 30 correspond to the two sleeves 15, respectively. The two protective boots 40 correspond to the two trouser legs 16, respectively.

[0025] Specifically, in one embodiment, a diagonal placket 17 is provided from one shoulder of the protective clothing body 10 to the other hip. The diagonal long placket 17 is connected by a plurality of pairs of mutually bonded Velcro tapes arranged in sequence from top to bottom. A waterproof zipper is provided inside the diagonal placket 17. The diagonal long placket 17 covers the opening of the inner waterproof zipper. Specifically, a diagonal placket 17 is provided from the front left shoulder to the right hip of the protective clothing body 10 to facilitate wearing and taking off.

[0026] Specifically, in one embodiment, a storage bag 14 is provided at the front right portion of the protective clothing body 10 for storing objects such as construction tools.

[0027] Specifically, in one embodiment, reflective strips 18 are provided on the left and right shoulders of the protective clothing body 10, the central part of the sleeves 15, and the lower part of the trouser legs 16, which serve as warnings and safety reminders to reduce the accident rate of operators.

[0028] The sleeves 15 of the protective suit body 10 and the protective gloves 30, and the trouser legs 16 of the protective suit body 10 and the protective boots 40 are all connected by sealing structures. Specifically, the two sleeves 15 and the two protective gloves 30 are sealed by two sealing structures 31, respectively, and the two trouser legs 16 and the two protective boots 40 are sealed by two sealing structures 41, respectively.

[0029] Specifically, in one embodiment, since the sealing connection structure 31 and the sealing connection structure 41 have substantially the same structure, the sealing connection structure 31 corresponding to the sleeve 15 and the protective glove 30 will be described below as an example.

[0030] Specifically, in one embodiment, the sealing connection structure 31 comprises a first annular engaging member 311 and a second annular engaging member 312 that are sealingly engaged with each other. Preferably, a tightenable member 313 is also included.

[0031] The first annular engaging member 311 is disposed in the cuff of the corresponding sleeve 11 and is located at a predetermined position above the cuff.

[0032] The second annular engaging member 312 is disposed in the glove opening of the corresponding protective glove 30. In this embodiment, the lower surface of the first annular engaging member 311 has an engaging hook 311a, and the upper surface of the second annular engaging member 312 has an engaging groove 312a matching the engaging hook 311a.

[0033] Preferably, in this embodiment, the first annular clamping part 311 and the second annular clamping part 312 are both composed of a skeleton of high-temperature resistant injection-molded hard PVC material and a high-temperature resistant soft rubber layer wrapped on the outer surface of the skeleton, and the clamping hook 311a and the skeleton of the first annular clamping part 311 are integrally formed; the outer peripheral surface of the first annular clamping part 311 is sealed to the inner surface of the sleeve 11 through a high-temperature resistant adhesive, and the outer peripheral surface of the second annular clamping part 312 is sealed to the inner surface of the glove opening of the protective glove 30 through a high-temperature resistant adhesive.

[0034] The tightening member 313 is arranged at the cuff of the corresponding sleeve 15. In the present embodiment, the tightening member 313 is a tightening belt, which is embedded in the corresponding cuff. Of course, according to actual needs, the tightening member 313 can also adopt other structures such as tightening buckles.

[0035] Specifically, in one embodiment, the protective hood 20 is made of a composite fabric that is resistant to high-temperature liquids and steam, and comprises a hood body 21 and an annular bib piece 22 integrally formed at the lower portion of the hood body 21. The lower portion of the hood body 21 and the collar portion of the protective clothing body 10 are connected via a sealed waterproof zipper, and the front edge of the annular bib piece 22 and the connection portion of the front portion of the protective clothing body 10 are connected via at least one pair of mutually attracted magnetic blocks.

[0036] The hood body 21 is a contoured hood body with a mask opening at the front. A mask 23 and a respirator 24 are provided at the mask opening. The respirator 24 is integrated at the bottom of the mask 23. The edge of the mask opening is sealed to the mask 23 and the respirator 24 by a high temperature resistant adhesive.

[0037] Specifically, in one embodiment, in a high-temperature steam environment, the respirator is a positive pressure air respirator, including: a back support assembly, including shoulder straps, a waist belt and a bottle support; a gas cylinder, which is placed in the bottle support, a pressure reducing valve is provided at the gas outlet of the gas cylinder, and a protective mask is connected through a high-pressure pipe, and an air supply valve is provided at the air inlet of the protective mask. The positive pressure air respirator is used to prevent the inhalation of moisture or toxic and harmful particles carried in the moisture.

[0038] Specifically, in one embodiment, the protective clothing against high-temperature liquids and steam also includes a cooling vest 50, which includes a vest body 51, and a plurality of pockets 52 on the inner back and both sides of the vest body, and the pockets 52 are used to place reusable cooling ice packs made of phase change material.

[0039] Preferably, the cooling time of the cooling vest 50 is limited. When it is necessary to stay in a high temperature environment for a long time, the cooling method of the cooling vest 50 can be further optimized as follows: a circulation pipeline is laid inside the cooling vest 50, the circulation pipeline is connected to a compression refrigerator, and cold air is delivered to the circulation pipeline through the compression refrigerator. The compression refrigerator is detachably arranged on the back side of the cooling vest 50. Alternatively, a circulation pipeline is laid inside the cooling vest 50, and the circulation pipeline is connected to a semiconductor refrigeration module. The semiconductor refrigeration module is used to cool the water in the circulating water tank and then deliver it to the circulation pipeline. The semiconductor refrigeration module is connected to a portable power source.

[0040] Specifically, in one embodiment, the vapor barrier layer of the composite fabric for preventing high temperature liquid and steam is composed of a blended fabric layer of nylon, flame retardant viscose and aramid fiber and a PTFE film compounded on the inner side of the blended fabric layer. Preferably, the blended fabric layer is woven from 40%-50% nylon, 20%-30% flame retardant viscose and 20%-30% aramid fiber blended yarn in a mass ratio. The unit area weight of the blended fabric layer is 170~190g / m 2, with a thickness of 0.5~0.7mm. The PTFE membrane passes through the inner side of the high temperature resistant adhesive blended fabric layer. The PTFE membrane has good steam barrier and high temperature resistance. Furthermore, since the blended fabric layer has high tensile strength, high tear resistance, and good flame retardant and heat insulation properties, the overall tensile and tear resistance of the steam barrier layer is large, and it has good flame retardant and heat insulation properties. The steam barrier layer has a certain heat insulation effect, and has a good flame retardant effect when exposed to flames; the composite PTFE membrane can prevent high temperature liquids from penetrating the fabric and contacting the skin to cause burns. After the high temperature steam penetrates into the fabric, it will also condense in the PFTE membrane in advance, away from the skin, to prevent further burns.

[0041] In the above blended fabric layer, nylon fiber has a wool-like feel and high flame retardant properties, is acid-resistant and chemical-resistant, and has a low cost. The use of flame-retardant viscose can enhance the flame retardancy, and the use of aramid can enhance the strength of the blended fabric layer, thereby making the blended fabric layer feel comfortable and have excellent flame retardant and strength properties.

[0042] The heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-insulating fiber layer composited on the upper and lower surfaces of the porous vacuum silicon material layer. The heat-insulating fiber layer is a heat-insulating fiber plain cloth or a heat-insulating fiber felt. The porous vacuum silicon material layer is prepared by vacuum cross-linking gasification high-pressure drying preparation process to prepare porous oxidized vacuum silica material and polymer skeleton material. The thickness of the porous vacuum silicon material layer is 0.3~0.7mm, the pore diameter is 10~40nm, the porosity is greater than 97%, the density is less than 0.03g / ml, and the minimum thermal conductivity is 0.014W / m·K. In this application, the porous vacuum silicon material layer of Meixing is used. The porous vacuum silicon material layer has a porous structure, a uniform surface, and a thermal conductivity coefficient of 0.014W / m·K at the lowest. It also has excellent properties such as hydrophobicity, flame retardancy, insulation, and environmental protection. It solves the problem of thermal insulation and further improves the comfort of human body. Compared with traditional thermal insulation materials, the porous vacuum silicon material layer further reduces the thermal conductivity of the thermal insulation middle layer. The porous vacuum silicon material layer is composited with thermal insulation fiber plain cloth or thermal insulation fiber felt on the upper and lower surfaces to increase flexibility, improve durability and reusability.

[0043] Preferably, in one embodiment, the skeleton material is an organic fiber material or an inorganic fiber material. Specifically, it can be an organic fiber such as aramid 1313 or polyimide fiber, or an inorganic fiber material such as glass fiber. Preferably, in one embodiment, the heat-resistant insulation fiber plain cloth is an aramid plain cloth, a PPS plain cloth or a PBO plain cloth, and the heat-resistant insulation fiber felt is an aramid fiber felt, a PPS fiber felt or a PBO fiber felt.

[0044] The insulating middle layer uses low-weight plain cloth or fiber felt, which has good protective insulation effect and avoids damage to the insulating middle layer during friction. Since the low-weight plain cloth is thin, the heat transfer can be ignored and does not affect the overall thermal conductivity. Compared with traditional short fiber flakes, the porous vacuum silicon material layer can not only improve the thermal insulation performance, but also reduce the weight, that is, to achieve lightweight high thermal insulation and reduce the clothing load when wearing. Moreover, the overall cost of the insulating middle layer is cheap.

[0045] The inner layer is a fiber blended fabric layer formed by blending high temperature resistant flame retardant aramid fiber and flame retardant cotton fiber. Preferably, the fiber blended fabric layer is a pipe fabric woven from 65-75% meta-aramid fiber and 25-35% flame retardant cotton fiber blended yarn according to a mass ratio. The fiber blended fabric layer has a unit area weight of 180-220 g / m 2 , with a thickness of 0.5~0.7mm. The pipe fabric has excellent flame retardancy and skin-friendliness. Its pipe structure also makes it have good moisture conductivity, increasing its moisture permeability and improving comfort. The use of meta-aramid can enhance the strength and service life of the fabric. The flame-retardant cotton fiber can play a flame retardant role while enhancing comfort and reducing discomfort when in contact with the skin. The fiber blended fabric layer is directly used as the inner layer, which has moisture absorption and perspiration and flame retardancy functions, is more comfortable, and can further improve the thermal insulation performance of the thermal insulation middle layer.

[0046] Specifically, the composite fabric for protecting against high-temperature liquids and steam used in the protective clothing of the present application has a second-degree burn time of >1200s under the conditions of water temperature of 95°C and flow rate of 40±1mL / s, and a second-degree burn time of >900s under the conditions of steam temperature of 100°C and steam pressure of 50kPa. According to the test results, it can be seen that the composite fabric for protecting against high-temperature liquids and steam used in the protective clothing of the present application has excellent performance in protecting against high-temperature liquids and high-temperature steam.

[0047] Compared with the prior art, the present invention has the following beneficial effects: due to the first annular engaging member 311 and the second annular engaging member 312 which are sealed and engaged with each other, the first annular engaging member 311 is arranged in the corresponding sleeve 15 and is located at a predetermined position above the cuff, or in the corresponding trouser leg 16 and is located at a predetermined position above the trouser leg opening, the outer peripheral surface of the first annular engaging member 311 is sealed and connected with the inner surface of the corresponding sleeve or trouser leg, the second annular engaging member 312 is arranged in the glove opening of the corresponding protective glove 30, or in the boot opening of the corresponding protective boot 40, the outer peripheral surface of the second annular engaging member 312 is sealed and connected with the inner surface of the corresponding glove opening or boot opening, thereby achieving comprehensive high-temperature liquid protection for the arms and calves; and, since the first annular engaging member 311 is located at the predetermined position above the corresponding cuff, or at the predetermined position above the corresponding trouser leg opening, the connection between the first annular engaging member 311 and the second annular engaging member 312 can be well shielded, further ensuring the protective effect. In addition, because the cuffs are also provided with a tightening member 313, and the trouser legs are also provided with a similar structure, the cuffs and trouser legs can be tightened, thereby improving the airtightness between the cuffs and the protective gloves 30, and between the trouser legs and the protective boots 40, and further ensuring the protective effect. The performance test results of each layer of the protective clothing for protection against high temperature liquids and steam according to an embodiment of the present application are shown in Table 1 below.

[0048] Table 1 Performance test results of each layer of protective clothing against high temperature liquids and steam in one embodiment of the present application

[0049] The protective clothing for high temperature liquid and steam of the present application has a second degree burn time of >1200s under the conditions of water temperature of 95°C and flow rate of 40±1mL / s, and a second degree burn time of >900s under the conditions of steam temperature of 100°C and steam pressure of 50kPa. According to the test results, the protective clothing for high temperature liquid and steam of the present application has excellent performance in protecting against high temperature liquid and high temperature steam.

Claims

1. A protective clothing against high temperature liquids and steam, characterized in that: include: A protective suit body, and a protective hood, protective gloves and protective boots which are detachably and sealably connected to the protective suit body; Wherein, the protective clothing body is a one-piece structure; The front part of the protective hood is provided with a mask and a respirator; The protective clothing body and the protective hood are both composite fabrics that are resistant to high-temperature liquids and steam, including a steam barrier layer, a heat-insulating middle layer, and an inner layer that are arranged in sequence; The steam barrier layer is composed of a blended fabric layer formed by chloronitrile, flame-retardant viscose and aramid fibers, and a PTFE film compounded on the inner side of the blended fabric layer; The heat-insulating middle layer is composed of a porous vacuum silicon material layer and a heat-insulating fiber layer composited on the upper and lower surfaces of the porous vacuum silicon material layer; the porous vacuum silicon material layer is prepared by a vacuum cross-linking, gasification and high-pressure drying preparation process to prepare a porous oxidized vacuum silica material and a polymer skeleton material, and the heat-insulating fiber layer is a heat-insulating fiber plain cloth or a heat-insulating fiber felt; The inner layer is a fiber blended fabric layer formed by blending high temperature resistant flame retardant aramid fibers and flame retardant cotton fibers.

2. The protective clothing for protecting against high temperature liquids and steam according to claim 1, characterized in that: Also includes: A cooling vest comprises a vest body. The inner back and both sides of the vest body are provided with a plurality of pockets, and the pockets are used for placing reusable cooling ice packs made of phase change material.

3. The protective clothing for protecting against high temperature liquids and steam according to claim 2, characterized in that: The inner lining of the cooling vest is paved with a circulation pipeline, which is connected to a compression refrigerator. Cold air is transported to the circulation pipeline through the compression refrigerator. The compression refrigerator is detachably arranged on the back side of the cooling vest.

4. The protective clothing for protecting against high temperature liquids and steam according to claim 2, characterized in that: A circulation pipe is laid inside the cooling vest, and the circulation pipe is connected to a semiconductor refrigeration module. The semiconductor refrigeration module is used to cool the water in the circulation water tank and then transport it to the circulation pipe. The semiconductor refrigeration module is connected to a portable power source.

5. The protective clothing for protection against high temperature liquids and steam according to claim 1, characterized in that: The blended fabric layer is woven from 40%-50% chloronitrile, 20%-30% flame retardant viscose and 20%-30% aramid fiber blended yarns according to a mass ratio, and the unit area weight of the blended fabric layer is 170-190g / m 2 , thickness is 0.5~0.7mm; The porous vacuum silicon material layer has a thickness of 0.3-0.7 mm, a pore diameter of 10-40 nm, a porosity of >97%, a density of <0.03 g / ml, and a minimum thermal conductivity of 0.014 W / m·K; The fiber blended fabric layer is a pipe fabric woven from 65-75% meta-aramid fiber and 25-35% flame-retardant cotton fiber blended yarn according to a mass ratio, and the fiber blended fabric layer has a unit area weight of 180-220 g / m 2 , thickness is 0.5~0.7mm; The skeleton material is an organic fiber material or an inorganic fiber material, the heat-resistant fiber plain cloth is an aramid plain cloth, a PPS plain cloth or a PBO plain cloth, and the heat-resistant fiber felt is an aramid fiber felt, a PPS fiber felt or a PBO fiber felt.

6. The protective clothing for protection against high temperature liquids and steam according to claim 1, characterized in that: The composite fabric resistant to high-temperature liquids and steam has a second-degree burn time of >1200s under the conditions of a water temperature of 95°C and a flow rate of 40±1mL / s, and a second-degree burn time of >900s under the conditions of a steam temperature of 100°C and a steam pressure of 50kPa.

7. The protective clothing for protecting against high temperature liquids and steam according to claim 1, characterized in that: The respirator is a positive pressure air respirator, comprising: Back support assembly, including shoulder and waist straps and bottle holder; The gas cylinder is placed in a bottle holder. A pressure reducing valve is provided at the gas outlet of the gas cylinder, which is connected to the protective mask through a high-pressure pipe. An air supply valve is provided at the air inlet of the protective mask.

8. The protective clothing for protecting against high temperature liquids and steam according to claim 1, characterized in that: The protective head cover comprises a head cover body and an annular bib piece connected to the lower part of the head cover body. The lower part of the hood body and the collar of the protective clothing body are connected by a sealed waterproof zipper. The edge of the front part of the annular bib piece and the corresponding part of the front part of the protective clothing body are connected through at least one pair of mutually attracted magnetic blocks.

9. The protective clothing for protecting against high temperature liquids and steam according to claim 1, characterized in that: The sleeves of the protective clothing body and the protective gloves, as well as the trouser legs of the protective clothing body and the protective boots are connected via a sealing connection structure. The sealing connection structure comprises a first annular clamping member and a second annular clamping member which are sealingly clamped to each other; The first annular engaging member is arranged in the corresponding sleeve and above the cuff, or in the corresponding trouser leg and above the trouser leg opening. The outer peripheral surface of the first annular engaging member is sealingly connected to the inner surface of the corresponding sleeve or trouser leg; The second annular engaging member is disposed in the glove opening of the corresponding protective glove or in the boot opening of the corresponding protective boot; The outer peripheral surface of the second annular engaging member is sealingly connected to the inner surface of the corresponding glove opening or the boot opening.

10. The protective clothing for protecting against high temperature liquids and steam according to claim 7, characterized in that: The cuffs and the trouser legs are both provided with tightening parts, and the protective clothing body is provided with a diagonal placket from one shoulder to the other hip. The diagonal long placket is connected by a plurality of pairs of mutually bonded Velcro strips arranged in sequence from top to bottom, and the inner opening is covered by a waterproof zipper.

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