Flexible explosion-proof fuel tank cap

Abstract

The utility model relates to a flexible explosion-proof fuel tank cap which comprises a bottom square flange, a square valve body is arranged on the top of the bottom square flange, a square flange cover is installed on the top of the square valve body, an installation base is fixedly installed on the bottom square flange, an installation groove is formed in the top wall of the installation base, and a valve rod is installed in the installation groove. A first guide column is installed in the installation groove, a second guide column is fixedly installed on the top of the first guide column, the outer surface of the second guide column is sleeved with a spring, and a nut is installed outside the first guide column. According to the flexible anti-explosion oil tank cover, the device is in a closed state under the daily working pressure, by arranging the first guide column, when the pressure rises instantly due to sudden faults in a transformer, the first guide column in the device is snapped, the device is started and the pressure is released, and by arranging the spring, when the pressure drops below a safety value, the first guide column in the device is snapped, and the device is closed. And the square flange cover is reliably closed by the spring outside the second guide post, so that the transformer is prevented from being polluted by external water or dirt.

Description

Technical Field

[0001] The utility model relates to the technical field of advanced manufacturing and automation, in particular to a flexible explosion-proof oil tank cover. Background Art

[0002] The fuel tank cap refers to a cover installed on the fuel tank to prevent the oil from being exposed to the air. It is mainly used to seal the fuel tank to prevent oil from evaporating.

[0003] When the transformer is short-circuited, the pressure increases very rapidly, and the oil tank cover manufactured by the current existing process cannot withstand it, causing the oil tank to rupture and cause safety hazards. Therefore, a flexible explosion-proof oil tank cover is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a flexible explosion-proof oil tank cover, which has the advantages of releasing the pressure generated by transformer failure, etc., and solves the problem that the oil tank manufactured by the existing process cannot withstand the pressure, resulting in the oil tank rupture and causing safety hazards.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flexible explosion-proof oil tank cover, comprising a bottom square flange, a square valve body is arranged on the top of the bottom square flange, a square flange cover is installed on the top of the square valve body, a mounting seat is fixedly installed on the bottom square flange, a mounting groove is provided on the top wall of the mounting seat, a first guide column is installed in the mounting groove, a second guide column is fixedly installed on the top of the first guide column, a spring is sleeved on the outer surface of the second guide column, and a nut is installed on the outside of the first guide column.

[0008] Furthermore, the top of the spring is fixedly connected to the square flange cover, and the bottom of the spring is fixedly connected to the nut.

[0009] Furthermore, the surfaces of the bottom square flange and the square valve body are both made of flexible polymer composite materials, and the surface of the square flange cover is made of flexible polymer composite materials.

[0010] Further, the diameter of the first guide pillar is smaller than the diameter of the second guide pillar, and the length of the first guide pillar is smaller than the length of the second guide pillar.

[0011] Furthermore, the top of the second guide column is fixedly connected to the square flange cover, the number of the first guide columns exceeds five, the number of the second guide columns and springs is consistent with the number of the first guide columns, and the number of the nuts is consistent with the number of the first guide columns.

[0012] Furthermore, the axial positions of the first guide pillar and the second guide pillar correspond to each other, the first guide pillar and the second guide pillar are evenly distributed inside the square valve body, and the surface of the square flange cover is provided with an antistatic paint layer.

[0013] Furthermore, the nut is installed at the bottom of the outer surface of the second guide column, and the size of the installation groove is matched with the size of the first guide column.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The flexible explosion-proof oil tank cover is in a closed state under normal working pressure. By setting the first guide column, when a sudden fault in the transformer causes the pressure to rise instantly, the first guide column in the device is pulled off, the device opens and releases the pressure. By setting the spring, when the pressure drops below the safe value, the spring outside the second guide column will reliably close the square flange cover to prevent external water or dirt from polluting the transformer, and also isolate oxygen to prevent the flame in the transformer from further spreading. It solves the problem that when the transformer is short-circuited, the pressure increases very quickly, and the oil tank cover manufactured by the current existing process cannot withstand it, resulting in the rupture of the oil tank and causing safety hazards. The surfaces of the bottom square flange and the square valve body are both made of flexible polymer composite materials, and the surface of the square flange cover is made of flexible polymer composite materials, which have explosion-proof, moisture-proof, corrosion-resistant and acid-alkali resistant capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is the front view of the utility model;

[0019] Figure 3 It is a front cross-sectional view of the utility model.

[0020] In the figure: 1 bottom square flange, 2 square valve body, 3 square flange cover, 4 mounting seat, 5 mounting groove, 6 first guide column, 7 second guide column, 8 spring, 9 nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3A flexible explosion-proof fuel tank cover in this embodiment includes a bottom square flange 1, a square valve body 2 is arranged on the top of the bottom square flange 1, a square flange cover 3 is installed on the top of the square valve body 2, a mounting seat 4 is fixedly installed on the bottom square flange 1, a mounting groove 5 is opened on the top wall of the mounting seat 4, a first guide column 6 is installed in the mounting groove 5, a second guide column 7 is fixedly installed on the top of the first guide column 6, a spring 8 is sleeved on the outer surface of the second guide column 7, and a nut 9 is installed on the outside of the first guide column 6.

[0023] In the embodiment, the surfaces of the bottom square flange 1 and the square valve body 2 are both made of flexible polymer composite materials, and the surface of the square flange cover 3 is made of flexible polymer composite materials, which have explosion-proof, moisture-proof, corrosion-resistant, and acid- and alkali-resistant capabilities.

[0024] In the embodiment, the diameter of the first guide pillar 6 is smaller than the diameter of the second guide pillar 7, and the length of the first guide pillar 6 is smaller than the length of the second guide pillar 7. The first guide pillar 6 having a smaller diameter and a smaller length is easier to break than the second guide pillar 7 when a sudden fault in the transformer causes an instantaneous increase in pressure, thereby enabling the device to open and release pressure.

[0025] In an embodiment, the number of first guide pillars 6 exceeds five, the number of second guide pillars 7 and springs 8 is consistent with the number of first guide pillars 6, and the number of nuts 9 is consistent with the number of first guide pillars 6. By setting multiple first guide pillars 6, second guide pillars 7, springs 8 and nuts 9, the device can be more stably kept in a closed state under daily working pressure.

[0026] In the embodiment, the first guide column 6 and the second guide column 7 are evenly distributed inside the square valve body 2, and the surface of the square flange cover 3 is provided with an anti-static paint layer. The anti-static paint layer refers to a paint layer formed by spraying the existing anti-static paint on the cover body. Its purpose is to reduce the accumulation of static electricity and avoid electrostatic discharge.

[0027] When implementing, follow these steps:

[0028] 1) When a sudden fault in the transformer causes the pressure to rise instantly, the first guide column 6 is broken first, the device opens and releases the pressure;

[0029] 2) Then when the pressure drops below the safe value, the spring 8 closes the square flange cover 3;

[0030] 3) After the final shutdown, the inside of the device is sealed and isolated to prevent external water or dirt from contaminating the transformer and prevent the flame inside the transformer from further spreading.

[0031] To sum up, the flexible explosion-proof oil tank cover is in a closed state under normal working pressure. By setting the first guide column 6, when a sudden fault in the transformer causes the pressure to rise instantly, the first guide column 6 in the device is broken, the device opens and releases the pressure, and by setting the spring 8, when the pressure drops below the safe value, the spring 8 outside the second guide column 7 will reliably close the square flange cover 3 to prevent external water or dirt from polluting the transformer, and also isolate oxygen to prevent the flame in the transformer from further spreading; the surfaces of the bottom square flange 1 and the square valve body 2 are both made of flexible polymer composite materials, and the surface of the square flange cover 3 is made of flexible polymer composite materials, which are explosion-proof, moisture-proof, corrosion-resistant and acid-alkali resistant, and solve the problem that when the transformer is short-circuited, the pressure increases very rapidly, and the oil tank cover manufactured by the current existing process cannot withstand it, resulting in the rupture of the oil tank and causing safety hazards.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible explosion-proof fuel tank cover, comprising a bottom square flange (1), characterized in that: A square valve body (2) is arranged on the top of the bottom square flange (1), a square flange cover (3) is installed on the top of the square valve body (2), a mounting seat (4) is fixedly installed on the bottom square flange (1), a mounting groove (5) is provided on the top wall of the mounting seat (4), a first guide column (6) is installed in the mounting groove (5), a second guide column (7) is fixedly installed on the top of the first guide column (6), a spring (8) is sleeved on the outer surface of the second guide column (7), and a nut (9) is installed on the outside of the first guide column (6).

2. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The top of the spring (8) is fixedly connected to the square flange cover (3), and the bottom of the spring (8) is fixedly connected to the nut (9).

3. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The surfaces of the bottom square flange (1) and the square valve body (2) are both made of flexible polymer composite materials, and the surface of the square flange cover (3) is made of flexible polymer composite materials.

4. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The diameter of the first guide column (6) is smaller than the diameter of the second guide column (7), and the length of the first guide column (6) is smaller than the length of the second guide column (7).

5. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The top of the second guide column (7) is fixedly connected to the square flange cover (3), the number of the first guide columns (6) exceeds five, the number of the second guide columns (7) and the springs (8) is consistent with the number of the first guide columns (6), and the number of the nuts (9) is consistent with the number of the first guide columns (6).

6. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The axial positions of the first guide pillar (6) and the second guide pillar (7) correspond to each other; the first guide pillar (6) and the second guide pillar (7) are evenly distributed inside the square valve body (2); and the surface of the square flange cover (3) is provided with an antistatic paint layer.

7. The flexible explosion-proof fuel tank cover according to claim 1, characterized in that: The nut (9) is mounted on the bottom of the outer surface of the second guide column (7), and the size of the mounting groove (5) is matched with the size of the first guide column (6).

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