Fire-proof cover for liquefied petroleum gas steel cylinder

Abstract

The utility model discloses a fire-proof cover for a liquefied petroleum gas steel cylinder, which is characterized in that an upper shell is cylindrical corresponding to the upper part of the steel cylinder, and an upper fixing ring is integrally formed at the top of the upper shell corresponding to a top support plate of the steel cylinder; the upper fixing ring and a top supporting plate of the steel cylinder are fixed through a bolt; the lower shell is cylindrical corresponding to the lower part of the steel cylinder, and a lower fixing ring is integrally formed at the bottom of the lower shell corresponding to a bottom annular supporting plate of the steel cylinder; the lower fixing ring and the bottom annular supporting plate of the steel cylinder are fixed through bolts; the bottom of the upper shell and the top of the lower shell are connected in a curled-edge-type meshing mode. The inner interlayer is an annular ceramic fiber heat insulation layer, is arranged on the outer side of the steel cylinder in a sleeving mode and is located on the inner side of the upper shell and the inner side of the lower shell. According to the fire-proof cover for the liquefied petroleum gas steel cylinder, due to the arrangement of the ceramic wool, the temperature use upper limit of the steel cylinder is improved, the rescue time is prolonged, and the fire-proof cover is simple in installation process and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of safety equipment for liquefied gas cylinders, in particular to a fireproof cover for liquefied petroleum gas cylinders. Background Art

[0002] Liquefied petroleum gas cylinder explosion accidents occur frequently at home and abroad, causing countless irreparable huge losses of life and property. In fire accidents, the secondary explosion caused by the leakage of liquefied petroleum gas due to the heat and rupture of the cylinder is about ten times the thermal equivalent of TNT explosives, and the destructive power and lethality it produces are even greater. Therefore, it is urgent to design a fireproof cover for thermal insulation and fire protection of liquefied petroleum gas cylinders, increase the upper temperature limit of the cylinder, provide more time for fire rescue, and reduce danger. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a fireproof cover for a liquefied petroleum gas cylinder.

[0004] The utility model provides a fireproof cover for a liquefied petroleum gas cylinder, comprising an upper shell, a lower shell and an internal interlayer; wherein:

[0005] The upper shell body is configured to be cylindrical in shape corresponding to the upper portion of the steel cylinder, and the top of the upper shell body is configured to be integrally formed with an upper fixing ring corresponding to the top support plate of the steel cylinder; the upper fixing ring is fixed to the top support plate of the steel cylinder by bolts;

[0006] The lower shell body is configured to be cylindrical corresponding to the lower part of the steel cylinder, and the bottom of the lower shell body is configured to be integrally formed with a lower fixing ring corresponding to the bottom annular support plate of the steel cylinder; the lower fixing ring is fixed to the bottom annular support plate of the steel cylinder by bolts;

[0007] The bottom of the upper shell and the top of the lower shell are arranged to be in a crimping-type snap-in connection;

[0008] The inner interlayer is configured as an annular ceramic fiber heat insulation layer, which is sleeved on the outer side of the steel cylinder and located on the inner sides of the upper shell and the lower shell.

[0009] Preferably, the rolled edge bite connection includes an annular upward rolled edge arranged at the bottom of the upper shell and an annular downward rolled edge arranged at the top of the lower shell; the upward rolled edge is rolled inwardly in the circumferential direction, and the downward rolled edge is rolled outwardly in the circumferential direction; the upward rolled edge and the downward rolled edge are hooked and bitten into each other.

[0010] Preferably, the upper shell and the lower shell are both made of galvanized sheet material; and the upper shell and the lower shell are provided with annular raised reinforcing ribs.

[0011] Preferably, the ceramic fiber insulation layer is made of ceramic wool.

[0012] Preferably, the wall thickness of the upper shell and the lower shell is set to 0.35 mm; the distance between the outer wall of the cylinder and the inner wall of the upper shell and the lower shell is set to 2 mm.

[0013] Preferably, the thickness of the ceramic fiber insulation layer is set to 2 mm.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model of the fireproof cover for liquefied petroleum gas cylinder adopts the design of upper shell, lower shell and inner interlayer of ceramic wool to protect the liquefied petroleum gas cylinder from fire; the 2cm interlayer of ceramic wool has the fireproof and heat-insulating effect of the inner layer not exceeding 50℃ above zero within 1 hour at a high temperature of 1260℃, and the ceramic wool gives full play to its heat insulation, heat preservation, water repellency, durability and other characteristics, and the anti-corrosion galvanized sheet is used as the inner and outer walls of the fireproof cover to provide all-round protection for the ceramic wool interlayer, and the full coverage form an effective fireproof and heat-insulating effect for the heating of the liquefied petroleum gas cylinder. In view of the upper limit of the normal use of the liquefied petroleum gas cylinder must be below 60℃ above zero, the technical solution of the present application realizes the fundamental safety guarantee that the inner wall of the ceramic wool interlayer does not exceed 50℃ above zero within one hour at a space temperature of 1260℃ above zero, thereby achieving the purpose of exchanging space safety for at least one hour of firefighting time;

[0016] It can eliminate unnecessary fear among people at the fire scene in the initial stage of a fire, and prevent secondary disasters such as falling or being trampled due to panic escape;

[0017] It enables the personnel at the fire scene to extinguish the fire on their own based on the above, and to rationally carry out scientific procedures such as cutting off the power supply and extinguishing the fire source;

[0018] Buy precious time for timely evacuation of people, wounded, property and important information;

[0019] It plays a major role and significance in exchanging space safety for firefighting time;

[0020] The rupture and gas leakage of the liquefied petroleum gas cylinder were controlled within an effective time, avoiding the risk of firefighters being exposed to a secondary explosion caused by the fire.

[0021] It should be understood that the contents described in the summary of the utility model are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model.

[0022] Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 A schematic structural diagram of a fireproof cover for a liquefied petroleum gas cylinder provided in an embodiment of the utility model;

[0025] Figure 2 It is a longitudinal cross-sectional view after the upper curling edge and the lower curling edge are engaged and assembled;

[0026] Numbers in the figure: 1, upper shell; 2, upper fixing ring; 3, lower shell; 4, lower fixing ring; 5, ceramic fiber insulation layer; 6, upper folded edge; 7, lower folded edge; 8, reinforcing ribs; 9, steel cylinder. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Due to the frequent explosions of liquefied petroleum gas cylinders at home and abroad, countless irreparable and huge losses of life and property have been caused. The secondary explosion caused by the leakage of liquefied petroleum gas due to the heat and rupture of the cylinder in a fire accident is about ten times the thermal equivalent of TNT explosives, and the destructive power and lethality it produces are even greater; the application and invention of ceramic wool (aluminum silicate) cylinder fire shelter technology, through the fireproof and heat-insulating effect of the 2cm ceramic wool interlayer at a high temperature of 1260℃ for 1 hour, the inner layer does not exceed 50℃ above zero, providing a fundamental safety guarantee for the 15-minute firefighting time stipulated in the "Regulations on Duty and Combat of Public Security Fire Forces".

[0030] This application is based on the ceramic wool blanket product with fire resistance of not less than 1260℃, thermal conductivity of less than 0.035W / mk, and durability of more than 50 years. The interlayer between the upper shell of 0.3mm thick galvanized sheet and the lower shell of 0.3mm thick galvanized sheet is filled with a blanket product with 2cm thick ceramic wool, which fully covers the liquefied petroleum gas cylinder below the handle of the self-protection cover. In view of the upper temperature limit of liquefied petroleum gas cylinders that must be below 60℃ for normal use, the fundamental safety guarantee of the inner wall of the ceramic wool interlayer not exceeding 50℃ within one hour at a space temperature of 1260℃ is achieved, thereby achieving the application invention purpose of exchanging space safety for at least one hour of fire fighting time.

[0031] Please refer to Figures 1-2 The embodiment of the utility model provides a fireproof cover for a liquefied petroleum gas cylinder, comprising an upper shell 1, a lower shell 2 and an internal interlayer; wherein,

[0032] The upper shell 1 is set to be cylindrical corresponding to the upper part of the steel cylinder 9, and the top of the upper shell 1 is formed with an upper fixing ring 2 in an integral manner corresponding to the top support plate of the steel cylinder 9; the upper fixing ring 2 is fixed to the top support plate of the steel cylinder 9 by bolts;

[0033] The lower shell 3 is set to be cylindrical corresponding to the lower part of the steel cylinder 9, and the bottom of the lower shell 3 is formed with a lower fixing ring 4 in one piece corresponding to the bottom annular support plate of the steel cylinder 9; the lower fixing ring 4 is fixed to the bottom annular support plate of the steel cylinder 9 by bolts;

[0034] The bottom of the upper shell 1 and the top of the lower shell 3 are arranged to be connected by a crimping type snap connection;

[0035] The inner interlayer is configured as an annular ceramic fiber heat insulation layer 5 , which is sleeved on the outer side of the steel cylinder 9 and located on the inner side of the upper shell 1 and the lower shell 3 .

[0036] In a preferred embodiment, the rolled edge bite connection includes an annular upward rolled edge 6 arranged at the bottom of the upper shell 1 and an annular downward rolled edge 7 arranged at the top of the lower shell 3; the upward rolled edge 6 is rolled inwardly in the circumferential direction, and the downward rolled edge 7 is rolled outwardly in the circumferential direction; the upward rolled edge 6 and the downward rolled edge 7 are hooked and bitten with each other, and a sealed connection between the two is achieved through the rolling process.

[0037] In a preferred embodiment, the upper shell 1 and the lower shell 3 are both made of galvanized sheet material, which can protect the internal structure of the ceramic wool insulation layer with due thickness and hardness on the basis of anti-corrosion, especially the sealing characteristics of the crimping bite process, which is the greatest support for the water repellency and heat insulation and fireproof functions of the ceramic wool;

[0038] The upper shell 1 and the lower shell 3 are provided with annular reinforcement ribs 8 protruding outwards, and the reinforcement ribs 8 are formed by roll forming.

[0039] In a preferred embodiment, the ceramic fiber insulation layer 5 is made of ceramic wool material, which has the characteristics of fire resistance not less than 1260°C, thermal conductivity less than 0.035W / mk, and durability of more than 50 years. It is combined with the galvanized sheet material to form a fireproof cover to protect the cylinder from fire. When a fire occurs outside, the external temperature can be isolated within a certain time range and quickly transmitted to the cylinder, thereby increasing the upper temperature limit of the cylinder 9, thereby extending a certain rescue time.

[0040] In a preferred embodiment, the wall thickness of the upper shell 1 and the lower shell 3 is set to 0.35 mm; the distance between the outer wall of the steel cylinder 9 and the inner wall of the upper shell 1 and the lower shell 3 is set to 2 mm, and the 2 cm thick ceramic wool naturally fits between the steel cylinder 9 and the upper shell 1 and the lower shell 3.

[0041] In a preferred embodiment, the thickness of the ceramic fiber insulation layer 5 is set to 2 mm.

[0042] When the fireproof cover is installed with the steel cylinder 9, the ceramic wool is wrapped and sleeved on the circumferential outer side of the steel cylinder 9, and the shell is cured by glue; then the lower shell 3 is sleeved from the bottom of the steel cylinder 9 to the lower part of the circumferential outer side of the ceramic wool, and then the upper shell 1 is sleeved from the top of the steel cylinder 9 to the upper part of the circumferential outer side of the ceramic wool, and the top of the upper shell 1 and the bottom of the lower shell 3 are connected by a crimping bite connection, and the sealing is achieved by the crimping process; then the top of the upper shell 1 and the bottom of the lower shell 3 are fixedly connected to the top support plate and the bottom annular support plate of the steel cylinder 9 respectively by bolts, and the whole installation process is completed. The operation is simple and the fireproof and heat-insulating effects are good.

[0043] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fireproof cover for a liquefied petroleum gas cylinder, characterized in that: It includes an upper shell, a lower shell and an internal interlayer; wherein, The upper shell body is configured to be cylindrical in shape corresponding to the upper portion of the steel cylinder, and the top of the upper shell body is configured to be integrally formed with an upper fixing ring corresponding to the top support plate of the steel cylinder; the upper fixing ring is fixed to the top support plate of the steel cylinder by bolts; The lower shell body is configured to be cylindrical corresponding to the lower part of the steel cylinder, and the bottom of the lower shell body is configured to be integrally formed with a lower fixing ring corresponding to the bottom annular support plate of the steel cylinder; the lower fixing ring is fixed to the bottom annular support plate of the steel cylinder by bolts; The bottom of the upper shell and the top of the lower shell are arranged to be in a crimping-type snap-in connection; The inner interlayer is configured as an annular ceramic fiber heat insulation layer, which is sleeved on the outer side of the steel cylinder and located on the inner sides of the upper shell and the lower shell.

2. The fireproof cover for liquefied petroleum gas cylinder according to claim 1, characterized in that: The rolled edge bite connection includes an annular upward rolled edge arranged at the bottom of the upper shell and an annular downward rolled edge arranged at the top of the lower shell; the upward rolled edge is rolled inwardly in the circumferential direction, and the downward rolled edge is rolled outwardly in the circumferential direction; the upward rolled edge and the downward rolled edge are hooked and bitten with each other.

3. The fireproof cover for liquefied petroleum gas cylinder according to claim 1, characterized in that: The upper shell and the lower shell are both made of galvanized sheet material; the upper shell and the lower shell are provided with annular protruding reinforcing ribs.

4. The fireproof cover for liquefied petroleum gas cylinder according to claim 1, characterized in that: The ceramic fiber heat insulation layer is made of ceramic wool.

5. The fireproof cover for liquefied petroleum gas cylinder according to claim 1, characterized in that: The wall thickness of the upper shell and the lower shell is set to 0.35 mm; the distance between the outer wall of the cylinder and the inner wall of the upper shell and the lower shell is set to 2 mm.

6. The fireproof cover for liquefied petroleum gas cylinder according to claim 1, characterized in that: The thickness of the ceramic fiber insulation layer is set to 2 mm.

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