Anti-deflagration pipeline flame arrester

Abstract

The anti-deflagration pipeline flame arrester comprises a first valve body and a second valve body, the first valve body and the second valve body are both in a circular truncated cone shape, connecting flanges are arranged on the short-diameter sides of the first valve body and the second valve body, and a first fixing flange and a second fixing flange are arranged on the long-diameter sides of the first valve body and the second valve body respectively. A first sealing ring is arranged on the inner surface of one side of the first fixing flange, a second sealing ring is arranged on the outer surface of the first sealing ring, and one side of the second sealing ring is connected with one side face of the second fixing flange. By arranging the first fixing ring and the second fixing ring, the first fixing ring and the second fixing ring have extremely high hardness and abrasion resistance, the situation that the sealing performance is reduced due to abrasion caused by long-time use is avoided, and the situation that the sealing performance is reduced due to the fact that the first fixing flange and the second fixing flange are frequently taken down is prevented; and the explosion phenomenon in the pipeline is further caused.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline flame arresters, in particular to an explosion-proof and flame-retarding pipeline flame arrester. Background Technique

[0002] An explosion-proof pipeline flame arrester is a safety device used to prevent the spread of flames of flammable gases and prevent flashback from causing explosions. The explosion-proof pipeline flame arrester is usually installed on storage tanks and pipelines for transporting or discharging flammable and explosive gases, such as heating combustion systems, petroleum gas recovery systems or other flammable gas systems.

[0003] In the prior art, during the use of an explosion-proof pipeline flame arrester, certain dirt will be generated inside the pipeline. Therefore, the flange nuts at the connection of the two flame arrester shells need to be removed, so that the two flame arrester shells can be removed, and then the inside of the flame arrester shell can be cleaned. During the use process, dirt will be frequently generated inside the pipeline. Therefore, the flange needs to be frequently removed. Frequent removal of the flange easily causes certain wear on the flange, which in turn leads to less than ideal flange sealing, resulting in external air entering. Generally, the explosion-proof pipeline is filled with easily explosive gases. These gases are likely to explode when in contact with air. When the sealing is not ideal, the explosion-proof and flame-retarding effect cannot be achieved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an explosion-proof and flame-retarding pipeline flame arrester to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An explosion-proof and flame-retarding pipeline flame arrester includes a first valve body and a second valve body. The shapes of the first valve body and the second valve body are both frustum-shaped. Connecting flanges are provided on the shorter diameter sides of the first valve body and the second valve body. A first fixed flange and a second fixed flange are respectively provided on the longer diameter sides of the first valve body and the second valve body. A first sealing ring is provided on the inner surface of one side of the first fixed flange. A second sealing ring is provided on the outer surface of the first sealing ring. One side of the second sealing ring is connected to one side surface of the second fixed flange.

[0007] Preferably, studs are provided at the fixing holes of the first fixed flange and the second fixed flange. Nuts are respectively sleeved at both ends of the studs. The bottom of the nuts is connected to the other side of the first fixed flange or the other side of the second fixed flange.

[0008] Preferably, a second sealing groove is opened on one side surface of the first fixed flange and on the outer surface of the first sealing ring. The second sealing groove is connected to the second sealing ring in a snap-fit manner.

[0009] Preferably, a first sealing groove is formed in the inner surface of one side of the second fixed flange, and a first sealing ring is connected to the first sealing groove in a snap-fit manner.

[0010] Preferably, a first sealing rubber is fixedly connected to the inner surface of the first sealing ring, and one side surface of the first sealing rubber is located on the side of one side surface of the first sealing ring.

[0011] Preferably, a second sealing rubber is fixedly connected to the outer surface of the second sealing ring, and one side surface of the second sealing rubber is in contact with the side surface of the first fixed flange.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By providing a first fixing ring and a second fixing ring, the first fixing ring and the second fixing ring have extremely high hardness and wear resistance, and will not be worn after long-term use, thus preventing the sealing performance from decreasing. This can prevent the sealing performance from decreasing due to frequent removal of the first fixed flange and the second fixed flange, and further prevent the occurrence of explosion inside the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0015] Figure 2 is a schematic diagram of the longitudinal sectional structure of the present utility model.

[0016] In the figure: 1, connecting flange; 2, first valve body; 3, second valve body; 4, first fixed flange; 5, second fixed flange; 6, stud; 7, nut; 8, first sealing rubber; 9, second sealing rubber; 10, first sealing ring; 11, second sealing ring; 12, first sealing groove; 13, second sealing groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0019] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Please refer to Figure 1-2 , the present utility model provides a technical solution:

[0021] An explosion-proof and flame-retardant pipeline flame arrester includes a first valve body 2 and a second valve body 3. The shapes of the first valve body 2 and the second valve body 3 are both frustum-shaped. Connecting flanges 1 are provided on the shorter diameter sides of the first valve body 2 and the second valve body 3. A first fixing flange 4 and a second fixing flange 5 are respectively provided on the longer diameter sides of the first valve body 2 and the second valve body 3. A first sealing ring 10 is provided on the inner surface of one side of the first fixing flange 4. A second sealing ring 11 is provided on the outer surface of the first sealing ring 10. One side of the second sealing ring 11 is connected to one side surface of the second fixing flange 5.

[0022] Furthermore, studs 6 are provided at the fixing holes of the first fixing flange 4 and the second fixing flange 5. Nuts 7 are respectively sleeved at both ends of the studs 6. The bottom of the nut 7 is connected to the other side of the first fixing flange 4 or the other side of the second fixing flange 5.

[0023] Furthermore, a second sealing groove 13 is formed on one side surface of the first fixing flange 4 and is located on the outer surface of the first sealing ring 10. The second sealing groove 13 is connected to the second sealing ring 11 in a snap-fit manner.

[0024] Furthermore, a first sealing groove 12 is formed on the inner surface of one side surface of the second fixing flange 5. The first sealing groove 12 is connected to the first sealing ring 10 in a snap-fit manner.

[0025] Furthermore, a first sealing rubber 8 is fixedly connected to the inner surface of the first sealing ring 10. One side surface of the first sealing rubber 8 is located on the side of one side surface of the first sealing ring 10.

[0026] Furthermore, a second sealing rubber 9 is fixedly connected to the outer surface of the second sealing ring 11, and one side surface of the second sealing rubber 9 is in contact with the side surface of the first fixing flange 4.

[0027] Working principle:

[0028] For the explosion-proof and flame-arresting pipeline flame arrester of the present utility model, during the installation of the first fixing flange 4 and the second fixing flange 5, the first sealing ring 10 will be inserted into the first sealing groove 12, and the second sealing ring 11 will be inserted into the second sealing groove 13. The materials of the first sealing ring 10 and the second sealing ring 12 are both wear-resistant steel plates. After the first fixing flange 4 and the second fixing flange 5 are frequently removed for a long time, due to the extremely high hardness and wear resistance of the first sealing ring 10 and the second sealing ring 11, the first sealing ring 10 and the second sealing ring 11 will still be snap-connected at the first sealing groove 12 and the second sealing groove 13, so that the connection part is tightly sealed. In addition, a first sealing rubber 8 is provided on the inner surface of the first sealing ring 10, and the first sealing rubber 8 will seal the first sealing ring 10 and the first fixing flange 4 again. Moreover, a second sealing rubber 9 is provided on the outer surface of the second sealing ring 11, and the second sealing rubber 9 will seal the second sealing ring 11 and the first fixing flange 4 again.

[0029] It should be noted that the first sealing rubber 8 and the second sealing rubber 9 are made of flame-retardant rubber and will not burn in the case of deflagration inside the pipeline flame arrester.

[0030] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-explosion pipeline flame arrester, comprising a first valve body (2) and a second valve body (3), characterized in that: The first valve body (2) and the second valve body (3) are both truncated cone-shaped, and the shorter diameter sides of the first valve body (2) and the second valve body (3) are both provided with connecting flanges (1), and the longer diameter sides of the first valve body (2) and the second valve body (3) are respectively provided with first fixing flanges (4) and second fixing flanges (5), and a first sealing ring (10) is provided on the inner surface of one side of the first fixing flange (4), and a second sealing ring (11) is provided on the outer surface of the first sealing ring (10), and one side of the second sealing ring (11) is connected to a side surface of the second fixing flange (5).

2. The anti-explosion pipeline flame arrester according to claim 1, characterized in that: Studs (6) are provided at the fixing holes of the first fixing flange (4) and the second fixing flange (5), and nuts (7) are respectively sleeved at both ends of the studs (6), and the bottom of the nuts (7) is connected to the other side of the first fixing flange (4) or the other side of the second fixing flange (5).

3. The anti-explosion pipeline flame arrester according to claim 1, characterized in that: A second sealing groove (13) is provided on one side of the first fixing flange (4) and located on the outer surface of the first sealing ring (10), and the second sealing groove (13) is snap-fittedly connected to the second sealing ring (11).

4. The anti-explosion pipeline flame arrester according to claim 1, characterized in that: A first sealing groove (12) is provided on the inner surface of one side of the second fixing flange (5), and a first sealing ring (10) is snap-fittedly connected to the first sealing groove (12).

5. The anti-explosion pipeline flame arrester according to claim 1, characterized in that: The inner surface of the first sealing ring (10) is fixedly connected to a first sealing rubber (8), and a side surface of the first sealing rubber (8) is located to the side of a side surface of the first sealing ring (10).

6. The anti-explosion pipeline flame arrester according to claim 1, characterized in that: The outer surface of the second sealing ring (11) is fixedly connected to a second sealing rubber (9), and one side surface of the second sealing rubber (9) is in contact with the side surface of the first fixed flange (4).

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