Flame extinguishing sheath for electrical switch connector of low-voltage distribution box

Abstract

The utility model relates to a low voltage distribution box electrical switch joint flame extinguishing sheath comprising an outer sleeve, the surface of the outer sleeve is integrally processed with a connecting band, the surface of the outer sleeve is provided with a mounting groove, one side of the connecting band is fixedly connected with a first flame extinguishing layer, and the inner part of the outer sleeve is fixedly connected with a second flame extinguishing layer. One side of the connecting belt is fixedly connected with a strong magnet, and the surface of the outer sleeve is fixedly connected with an iron sheet; according to the utility model, the outer sleeve with the second flame extinguishing layer is arranged to cover the electrical switch joint, and the first flame extinguishing layer is arranged to block the mounting groove, so that when the electrical switch joint burns due to faults, the temperature of flames melts the first flame extinguishing layer and the second flame extinguishing layer; and therefore, the flame extinguishing microcapsules and the perfluorohexanone fire extinguishing agent in the first flame extinguishing layer and the second flame extinguishing layer are released to extinguish flames.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical switch field especially relates to a low voltage distribution box electrical switch joint flame -out sheath. BACKGROUND

[0002] At present, electrical switch needs to connect cable, and the joint position of the electrical switch is prone to fire due to overheating or short circuit during use; in order to avoid the fire caused by the electrical switch joint,

[0003] The prior art document CN109411142A discloses a flame-retardant fire barrier tape for cable, which can effectively solve the fire problem by setting multiple flame-retardant materials, but the structure is relatively complex, and the installation and disassembly are difficult, the practical use is limited, and the practicability is poor, so a switch joint flame-out sheath is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a low voltage distribution box electrical switch joint flame -out sheath, which has the advantages of being able to extinguish the flame of the electrical switch joint.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a low voltage distribution box electrical switch joint flame -out sheath, including the sheath, the surface of the sheath is integrally processed with the connecting band, the surface of the sheath is provided with the mounting groove, one side of the connecting band is fixedly connected with the flame -out layer one, the inside of the sheath is fixedly connected with the flame -out layer two, one side of the connecting band is fixedly connected with the strong magnet, and the surface of the sheath is fixedly connected with the iron sheet.

[0006] The above technical scheme is adopted, the sheath, the flame -out layer two, the flame -out layer one and the mounting groove are arranged, can cover the surface of the electrical switch joint, when the switch joint burns, the temperature of the flame can melt the flame -out layer two and the flame -out layer one, the flame -out layer two and the flame -out layer one can realize the flame -out of the flame, the connecting band is limited by the strong magnet and the iron sheet, so that the flame -out layer one can be fixed after being clamped into the mounting groove, and the all -round flame -out effect of the lower part of the sheath on the flame is ensured.

[0007] The utility model is further provided with: the surface of the sheath is provided with the recess, and the iron sheet is located in the recess.

[0008] The above technical scheme is adopted, and the recess is arranged to be clamped with the strong magnet, so that the strong magnet and the iron sheet are mutually adsorbed, and the connecting band is fixed.

[0009] The utility model is further provided with: the width of the flame -out layer one is same with the width of the mounting groove.

[0010] By means of the above technical scheme, the flame-arresting layer one can be clamped into the inside of the mounting groove to wrap the bottom of the outer sleeve in all directions, so that the inside of the mounting groove also has the same flame-arresting effect as the flame-arresting layer two, thereby ensuring that the outer sleeve and the electrical switch joint clamp are connected and the flame is extinguished in all directions when the joint burns.

[0011] The utility model further sets up: the surface of outer sleeve has sprayed temperature sensing color change ink.

[0012] By means of the above technical scheme, the temperature sensing color change ink is arranged to sense the temperature inside the outer sleeve, and when the flame appears inside the outer sleeve, the temperature of the flame burning melts the flame-arresting layer two, which is then transmitted to the temperature sensing color change ink through the outer sleeve, and the temperature sensing color change ink changes color after sensing the heat, thereby achieving the prompting and early warning effects.

[0013] The utility model further sets up: the inside of flame-arresting layer one and flame-arresting layer two is equipped with flame-arresting microcapsule.

[0014] By means of the above technical scheme, the flame-arresting microcapsule contains perfluorohexanone extinguishing agent, which decomposes to generate free radicals under high temperature, and these free radicals react with the free radicals in the flame, thereby inhibiting the combustion chain reaction and extinguishing the flame; at the same time, the perfluorohexanone can also reduce the temperature of the combustible surface, so that the oxygen concentration on the surface of the combustible material is reduced, thereby inhibiting combustion.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The utility model discloses a sleeve with a flame-arresting layer two to cover the electrical switch joint, and a flame-arresting layer one to block the mounting groove, so that when the electrical switch joint burns due to failure, the temperature of the flame melts the flame-arresting layer one and the flame-arresting layer two, thereby releasing the flame-arresting microcapsule and the perfluorohexanone extinguishing agent inside the flame-arresting layer one and the flame-arresting layer two to extinguish the flame.

[0017] 2. The utility model discloses a connecting belt to connect the flame-arresting layer one, which is clamped into the inside of the mounting groove, and the strong magnet and the groove are connected and adsorbed by the iron sheet, so that the flame-arresting layer one can block the mounting groove, thereby allowing the lower part of the sleeve for covering the electrical switch joint to extinguish the flame in all directions when the switch joint burns, which ensures the flame-arresting effect and greatly reduces the installation difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural perspective view of the utility model.

[0019] Figure 2 It is an opening schematic view of the connecting belt of the utility model.

[0020] Figure 3It is the sectional view of the outer sleeve of the utility model.

[0021] Figure 4 It is the outer sleeve of the utility model Figure 3 The local structure amplification schematic view of A in the middle.

[0022] Reference signs: 1, outer sleeve; 2, connecting band; 3, installation groove; 4, flame-arresting layer one; 5, flame-arresting layer two; 6, strong magnet; 7, iron sheet; 8, recess; 9, temperature-sensitive color-changing ink. Specific implementation

[0023] The utility model will be further explained in detail in connection with the drawings.

[0024] Example 1:

[0025] Reference Figure 1 、 Figure 2 、 Figure 3 And Figure 4 , a low-voltage distribution box electrical switch joint flame-arresting sheath, comprising an outer sleeve 1, the surface of the outer sleeve 1 is integrally processed with a connecting band 2, the surface of the outer sleeve 1 is provided with an installation groove 3, one side of the connecting band 2 is fixedly connected with a flame-arresting layer one 4, and the inside of the outer sleeve 1 is fixedly connected with a flame-arresting layer two 5;One side of the connecting band 2 is fixedly connected with a strong magnet 6, and the surface of the outer sleeve 1 is fixedly connected with an iron sheet 7;The outer sleeve 1 with the flame-arresting layer two 5 is set to cover the electrical switch joint, the installation groove 3 is blocked by setting the flame-arresting layer one 4, when the electrical switch joint burns due to failure, the temperature of the flame will melt the flame-arresting layer one 4 and the flame-arresting layer two 5, so that the flame-arresting microcapsule and perfluorohexone extinguishing agent inside the flame-arresting layer one 4 and the flame-arresting layer two 5 are released to extinguish the flame;The connecting band 2 is connected with the flame-arresting layer one 4, the flame-arresting layer one 4 is clamped into the inside of the installation groove 3, and the strong magnet 6 and the recess 8 are clamped and adsorbed with the iron sheet 7, so that the installation groove 3 can be blocked by the flame-arresting layer one 4, so that the lower part of the outer sleeve 1 for sleeving the electrical switch joint can extinguish the flame in all directions when the switch joint burns, and the flame-arresting effect is guaranteed.

[0026] Further, the surface of the outer sleeve 1 is provided with a recess 8, and the iron sheet 7 is located in the inside of the recess 8, the recess 8 is set to be clamped with the strong magnet 6, so that the strong magnet 6 and the iron sheet 7 are mutually adsorbed, thereby fixing the connecting band 2.

[0027] Further, the width of the flame-arresting layer one 4 is the same as the width of the installation groove 3, the flame-arresting layer one 4 can be clamped into the inside of the installation groove 3 by setting the flame-arresting layer one 4 and the installation groove 3, the bottom of the outer sleeve 1 is wrapped in all directions, the installation groove 3 also has the flame-arresting layer one 4 with the same effect as the flame-arresting layer two 5, so that the outer sleeve 1 and the electrical switch joint are clamped, and the flame in all directions when the joint burns is extinguished.

[0028] Further, the surface of the outer cover 1 is sprayed with a temperature-sensitive color-changing ink 9, which is used to sense the temperature inside the outer cover 1. When a flame occurs inside the outer cover 1, the temperature of the flame will melt the flame-arresting layer two 5, which is then transmitted to the temperature-sensitive color-changing ink 9 through the outer cover 1. The temperature-sensitive color-changing ink 9 will change color after sensing the heat, achieving the effect of prompting and early warning.

[0029] Further, the inner part of the flame-arresting layer one 4 and the flame-arresting layer two 5 is provided with flame-arresting microcapsules, which contain perfluorohexanone extinguishing agent. At high temperatures, perfluorohexanone will decompose to produce free radicals, which will react with free radicals in the flame, thereby inhibiting the combustion chain reaction and extinguishing the flame. At the same time, perfluorohexanone can also reduce the temperature of the combustible surface, so that the oxygen concentration on the surface of the combustible material is reduced, thereby inhibiting combustion.

[0030] Brief description of the use process: when using, first pry open the installation slot 3, and then pass the cable through the installation slot 3 into the inner part of the outer cover 1.

[0031] Then install and connect the joint of the cable and the electrical switch.

[0032] Pull the outer cover 1 downward so that the bottom of the outer cover 1 contacts the electrical switch device. At this time, the electrical switch joint is sleeved in the inner part of the outer cover 1.

[0033] Then pull the connecting band 2 towards the groove 8, and insert the strong magnet 6 into the inner part of the groove 8 so that the strong magnet 6 and the iron sheet 7 are adsorbed. At this time, the flame-arresting layer one 4 connected with the connecting band 2 is also inserted into the installation slot 3.

[0034] When the electrical switch joint catches fire, the temperature of the flame will melt the flame-arresting layer one 4 and the flame-arresting layer two 5, and the flame-arresting microcapsules in the inner part of the flame-arresting layer one 4 and the flame-arresting layer two 5 will be released. The flame-arresting microcapsules will also be melted by the temperature of the flame, and the perfluorohexanone extinguishing agent contained in the inner part of the flame-arresting microcapsules will be released. At high temperatures, perfluorohexanone will decompose to produce free radicals, which will react with free radicals in the flame, thereby inhibiting the combustion chain reaction and extinguishing the flame.

[0035] This specific embodiment is only an explanation of the present application, and is not a limitation of the present application. Those skilled in the art can make modifications to this embodiment without creative contribution after reading the present specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A flame shield for electrical switch terminals of a low voltage distribution box comprising a sheath (1), characterized in that: The surface of the outer sleeve (1) is integrally processed with a connecting band (2), the surface of the outer sleeve (1) is provided with a mounting groove (3), one side of the connecting band (2) is fixedly connected with a flame-arresting layer one (4), the inside of the outer sleeve (1) is fixedly connected with a flame-arresting layer two (5); one side of the connecting band (2) is fixedly connected with a strong magnet (6), the surface of the outer sleeve (1) is fixedly connected with an iron sheet (7).

2. A flame shield for electrical switch terminals of a low voltage distribution box according to claim 1, characterized in that: The surface of the outer sleeve (1) is provided with a groove (8), and the iron sheet (7) is located in the inside of the groove (8).

3. A flame shield for electrical switch terminals of a low voltage distribution box according to claim 1, characterized in that: The width of the flame-arresting layer one (4) is the same as the width of the mounting groove (3).

4. A flame shield for electrical switch terminals of a low voltage distribution box according to claim 1, characterized in that: The surface of the outer sleeve (1) is sprayed with temperature-sensitive color-changing ink (9).

5. A flame shield for electrical switch terminals of a low voltage distribution box according to claim 1, characterized in that: The inside of the flame-arresting layer one (4) and the flame-arresting layer two (5) are both provided with flame-arresting microcapsules.

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