Steam smothering ring

Abstract

The utility model discloses a steam fire extinguishing ring pipe, including two same half ring pipe, two half ring pipe between through flange connection, one half ring pipe's middle position is provided with steam air inlet pipe, and the inboard surface of ring pipe that two half ring pipes constitute is provided with respectively first annular hole group, second annular hole group and third annular hole group around the center axis, first annular hole group, second annular hole group and third annular hole group are parallel to each other, second annular hole group is located in the middle position and is located same plane with steam air inlet pipe, first annular hole group and third annular hole group are symmetrically arranged in the both sides of second annular hole group, this steam fire extinguishing ring pipe can increase steam radiation range, and steam can be evenly injected in each part of ring pipe, thereby improving the fire extinguishing capacity of fire extinguishing ring pipe, and guaranteeing the safety of equipment.

Description

Technical Field

[0001] This utility model relates to the field of petrochemical equipment technology, specifically to a steam fire extinguishing ring pipe. Background Technology

[0002] Petrochemical plants are inherently hazardous due to the flammability of their raw materials and the use of high-temperature processes. This is especially true for equipment operating at temperatures equal to or above its auto-ignition point, such as atmospheric distillation towers and vacuum distillation tower bottom heat exchangers in atmospheric and vacuum distillation units, and hydrogenation reactors and high-pressure heat exchangers in fracturing units. These high-temperature equipment is highly susceptible to spontaneous combustion if a leak occurs at a flange, potentially causing a fire. Therefore, fire suppression systems are essential at the flanges of such equipment. Fixed steam fire suppression systems are simple to implement and highly effective in extinguishing initial fires, promptly extinguishing the ignition source upon leak and preventing further spread of the fire, thus avoiding significant loss of life and property.

[0003] Traditional steam fire extinguishing loops suffer from a small radiation range and uneven steam spray. The steam spray volume is too large near the steam inlet, resulting in steam waste, while the steam spray volume is insufficient further away from the steam inlet, leading to unsatisfactory fire extinguishing effect and failing to effectively guarantee the safety of the equipment. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a steam fire extinguishing ring pipe that can ensure the fire extinguishing effect of steam on equipment flanges, improve fire extinguishing capability, and effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a steam extinguishing ring pipe, comprising two identical semi-ring pipes connected by a flange, wherein a steam inlet pipe is provided in the middle of one of the semi-ring pipes, and a first annular hole group, a second annular hole group, and a third annular hole group are respectively provided on the inner side of the ring pipe formed by the two semi-ring pipes around its central axis, wherein the first annular hole group, the second annular hole group, and the third annular hole group are parallel to each other; The second annular hole group is located in the middle position and is on the same plane as the steam inlet pipe. The first annular hole group and the third annular hole group are symmetrically arranged on both sides of the second annular hole group. The size of the steam outlet in the first, second, and third annular hole groups gradually increases from the steam inlet pipe toward the far end.

[0006] As a preferred embodiment of this utility model, the steam outlets in the first annular hole group, the second annular hole group, and the third annular hole group are arranged alternately.

[0007] As a preferred embodiment of this utility model, the spacing between the steam outlet holes in the first annular hole group, the second annular hole group, and the third annular hole group gradually decreases from the steam inlet pipe toward the far end.

[0008] As a preferred embodiment of this utility model, the steam outlet in the second annular hole group faces its center, and the steam outlet in the first annular hole group, the third annular hole group, and the steam outlet in the second annular hole group are all at an angle of 60°.

[0009] Compared with the prior art, the beneficial effects of this utility model are: the steam fire extinguishing ring pipe is reasonably designed and ingeniously conceived. By opening three rows of parallel annular holes on the inner side of the fire extinguishing ring pipe, and the diameter of the steam outlet holes in each row of annular holes gradually increases from the steam inlet pipe to the far end, the steam radiation range is increased, ensuring that the steam is evenly sprayed in all parts of the ring pipe, thereby improving the fire extinguishing capability of the ring pipe. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is the front view of the present utility model; Figure 3 This is a main sectional view of the present invention; Figure 4 This is a schematic diagram showing the hole dimensions and the gradual change in hole diameter of each section of the annular tube in this utility model.

[0011] In the diagram: 1. Semi-circular pipe, 2. Steam inlet pipe, 3. First annular hole group, 4. Second annular hole group, 5. Third annular hole group, 6. Flange. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0013] Please see Figure 1-2 This utility model provides a technical solution: a steam extinguishing ring pipe, including two identical half-ring pipes 1, which are connected by a flange 6. A steam inlet pipe 2 is provided in the middle of one of the half-ring pipes 1. The inner side of the ring pipe formed by the two half-ring pipes 1 is provided with a first annular hole group 3, a second annular hole group 4 and a third annular hole group 5 around its central axis. The first annular hole group 3, the second annular hole group 4 and the third annular hole group 5 are parallel to each other. The second annular hole group 4 is located in the middle position and is on the same plane as the steam inlet pipe 2. The first annular hole group 3 and the third annular hole group 5 are symmetrically arranged on both sides of the second annular hole group 4. The size of the steam outlet in the first annular orifice group 3, the second annular orifice group 4, and the third annular orifice group 5 gradually increases from the steam inlet pipe 2 towards the far end.

[0014] To ensure uniform steam injection, the steam outlets in the first annular orifice group 3, the second annular orifice group 4, and the third annular orifice group 5 are arranged alternately.

[0015] like Figure 3-4 As shown, to ensure the steam injection volume at locations far from the steam inlet pipe 2, the spacing between the steam outlets in the first annular orifice group 3, the second annular orifice group 4, and the third annular orifice group 5 gradually decreases from the steam inlet pipe 2 towards the farthest end. The steam outlets in the three annular orifice groups 4 within the entire annular pipe are divided into three segments: the first segment is the area close to the steam inlet pipe 2; the second segment consists of two parts symmetrically arranged on both sides of the first segment; and the third segment is the area far from the steam inlet pipe 2, corresponding to the first segment. In this embodiment, the diameter of the steam outlets in the first annular pipe segment is 3mm, the diameter of the steam outlets in the second annular pipe segment is 4mm, and the diameter of the steam outlets in the third annular pipe segment is 5mm. The spacing between the steam outlets in the first annular pipe segment is 50mm, and the spacing between the steam outlets in the second annular pipe segment is 40mm. The steam outlet spacing in the third section of the ring pipe area is 30mm. The steam outlet diameters in the first annular hole group 3, the second annular hole group 4, and the third annular hole group 5 in each section are the same. The steam injection volume is adjusted by adjusting the size and spacing of the openings in each section, which effectively improves the situation of excessive steam injection volume near the steam inlet end and insufficient steam injection volume at the far end, reduces the difference in steam injection volume in various parts of the ring pipe, and extinguishes the fire in the entire area of ​​the equipment flange.

[0016] In order to further increase the steam radiation range, thereby increasing the area of ​​air isolation and increasing the steam protection area, the steam outlet in the second annular hole group 4 is oriented towards its center, and the steam outlet in the first annular hole group 3 and the third annular hole group 5 are at an angle of 60° with the steam outlet in the second annular hole group 4.

[0017] When in use: Install this ring pipe on the outside of the equipment flange. When fire extinguishing is required, steam enters the fire extinguishing ring pipe through the steam inlet pipe 2. The steam is then evenly sprayed from the inlet section to the outside of the equipment flange to extinguish the fire.

[0018] This invention adjusts the steam injection volume by changing the size and spacing of the openings in each section, effectively improving the situation of excessive steam injection near the steam inlet and insufficient steam injection at the far end, reducing the difference in steam injection volume at different parts of the ring pipe; by adjusting the opening angle, the steam radiation range is increased, thereby increasing the area of ​​air isolation, increasing the steam protection area, and improving the fire extinguishing capability.

[0019] The parts of this utility model not described in detail are prior art. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of the novel invention is defined by the appended claims and their equivalents.

Claims

1. A steam extinguishing ring pipe, comprising two identical semi-ring pipes (1), the two semi-ring pipes (1) being connected by a flange (6), wherein a steam inlet pipe (2) is provided at the middle position of one of the semi-ring pipes (1), characterized in that: The inner side of the ring tube composed of two semi-ring tubes (1) is provided with a first annular hole group (3), a second annular hole group (4) and a third annular hole group (5) around its central axis, and the first annular hole group (3), the second annular hole group (4) and the third annular hole group (5) are parallel to each other; The second annular hole group (4) is located in the middle position and is on the same plane as the steam inlet pipe (2). The first annular hole group (3) and the third annular hole group (5) are symmetrically arranged on both sides of the second annular hole group (4). The size of the steam outlet in the first annular hole group (3), the second annular hole group (4) and the third annular hole group (5) gradually increases from the steam inlet pipe (2) to the far end.

2. The steam extinguishing ring pipe according to claim 1, characterized in that: The steam outlets in the first annular hole group (3), the second annular hole group (4), and the third annular hole group (5) are arranged alternately.

3. A steam fire extinguishing ring pipe according to claim 1, characterized in that: The spacing between the steam outlet holes in the first annular hole group (3), the second annular hole group (4) and the third annular hole group (5) gradually decreases from the steam inlet pipe (2) toward the far end.

4. A steam fire extinguishing ring pipe according to claim 1, characterized in that: The steam outlet in the second annular hole group (4) faces its center, and the steam outlet in the first annular hole group (3) and the third annular hole group (5) are at an angle of 60° with the steam outlet in the second annular hole group (4).

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