Improved fire extinguishing steam device

Abstract

The utility model relates to an improved fire extinguishing steam device in the technical field of petrochemical fire extinguishing safety, which comprises a dehydration buffer tank and a fire extinguishing ring pipe positioned at a static sealing position of chemical equipment, a plurality of atomizing nozzles are annularly arranged on the lower pipe wall of the fire extinguishing ring pipe along a circle of the fire extinguishing ring pipe, and the fire extinguishing ring pipe is obliquely arranged above the dehydration buffer tank. The inclined low-end pipe body is correspondingly communicated with the top end of the dehydration buffer tank through a steam outlet pipe; the middle tank wall of the dehydration buffer tank is connected with a steam inlet pipe, a steam inlet control valve is installed at the far end of the steam inlet pipe, a steam inlet pipe body, close to the steam inlet control valve, between the steam inlet control valve and the dehydration buffer tank is communicated with an emptying pipe with an emptying valve, and the bottom end of the dehydration buffer tank is communicated with a blow-off pipe with a blow-off valve; the tank wall, close to the bottom end, of the dehydration buffer tank is communicated with an emptying pipe with an emptying valve, and a steam trap is further mounted on the emptying pipe; the fire extinguishing steam device can prevent stored water and carried impurities from flowing into the atomizing steam nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of petrochemical fire extinguishing safety, in particular to an improved fire extinguishing steam device. Background Art

[0002] In the field of petrochemicals, fire extinguishing steam devices are often installed at high-temperature static seals (flanges, etc.) where process media are flammable, explosive, and prone to leakage and ignition. The atomized steam nozzles of the fire extinguishing steam device correspond to the high-temperature static seals, and the steam control valves of the fire extinguishing steam device are generally installed in a safe position away from the high-temperature static seals, and are connected in the middle by pipelines;

[0003] During the use of traditional fire-extinguishing steam devices, since the steam-controlled valve is far away from the atomizing steam nozzle, the pipeline from the steam control valve to the atomizing steam nozzle is normally in a cold state. In the early stage of the fire-extinguishing steam device being put into use, a large amount of steam will first condense into water, and the steam will not be in a gaseous state until the pipeline temperature is all greater than the saturated steam temperature. At the same time, since the steam-controlled valve will leak during the standby process, the pipeline from the steam control valve to the atomizing steam nozzle is often filled with water. Due to the presence of a large amount of water, a large amount of water will be ejected through the steam nozzle in the early stage of the fire-extinguishing steam device being put into use. Not only will the impurities carried in the water easily clog the atomizing holes of the steam nozzle, reducing the function of the atomizing steam nozzle and increasing safety hazards, but a large amount of water will be sprayed onto the high-temperature static seal through the atomizing steam nozzle, which can easily cause the high-temperature static seal to further fail due to the drastic temperature change, aggravate the leakage of the static seal, and further expand the accident. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology and solve the existing technical problems, the utility model discloses an improved fire extinguishing steam device, which can prevent the stored water and the impurities carried by it from flowing into the atomizing steam nozzle.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] An improved fire extinguishing steam device comprises a dehydration buffer tank and a fire extinguishing ring pipe located at a static seal of a chemical equipment, wherein a plurality of atomizing nozzles are arranged around the lower tube wall of the fire extinguishing ring pipe, the fire extinguishing ring pipe is arranged obliquely above the dehydration buffer tank, and the inclined lower end tube body is correspondingly connected to the top of the dehydration buffer tank through a steam outlet pipe; a steam inlet pipe is connected to the middle tank wall of the dehydration buffer tank, a steam inlet control valve is installed at the far end of the steam inlet pipe, a vent pipe with a vent valve is connected to the steam inlet pipe body between the steam inlet control valve and the dehydration buffer tank near the steam inlet control valve, the bottom end of the dehydration buffer tank is connected to a drain pipe with a drain valve, the tank wall of the dehydration buffer tank near the bottom end is connected to a drain pipe with a drain valve, and a steam trap is also installed on the drain pipe.

[0007] Furthermore, the plurality of atomizing nozzles are evenly spaced apart.

[0008] Furthermore, the angle between the fire extinguishing ring pipe and the horizontal plane is 5 to 20 degrees.

[0009] Furthermore, the port of the drain pipe connected to the dehydration buffer tank is at least 10 cm higher than the upper port of the sewage pipe.

[0010] Furthermore, the proximal end of the steam inlet pipe is tangent to the wall of the dehydration buffer tank.

[0011] Furthermore, the lower end of the steam outlet pipe is located at the center of the top of the dehydration buffer tank and extends vertically into the dehydration buffer tank.

[0012] Furthermore, a mesh ring plate is coaxially fixed to the upper inner tank wall of the dehydration buffer tank.

[0013] Furthermore, the inner circle of the mesh ring plate is lower than the outer circle.

[0014] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0015] The improved fire extinguishing steam device disclosed by the utility model has a fire extinguishing ring pipe that is all-roundly covered at the static sealing component. Before the device is put into use, the water that may be retained in the fire extinguishing ring pipe, the dehydration buffer tank and the steam inlet pipe can be drained by opening the vent valve and the drain valve. After the device is put into use, the dehydration buffer tank can be used to dehydrate and collect a large amount of condensed water in the initial preheating steam to prevent it from being sprayed out from the atomizing nozzle, that is, it is avoided that a large amount of water impacts the high-temperature static sealing component and causes a huge temperature change to cause the seal to fail, and it is also prevented that the impurities carried in the water clog the atomizing nozzle, and the water and impurities can finally be collected and discharged at the lower part of the dehydration buffer tank, while improving the fire extinguishing effect and avoiding the damage to the device and the expansion of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the implementation structure of the utility model;

[0017] Figure 2 It is a schematic diagram of another implementation structure of the utility model.

[0018] In the figure: 1. Fire extinguishing ring pipe; 2. Steam outlet pipe; 3. Dehydration buffer tank; 4. Steam inlet pipe; 5. Steam inlet control valve; 6. Vent valve; 7. Drain valve; 8. Drain valve; 9. Steam trap; 10. Net ring plate. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" and the like indicating directions or positional relationships, they are only corresponding to the drawings of the present invention, for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction: Embodiment 1:

[0020] Combined with Figure 1 The improved fire extinguishing steam device comprises a dehydration buffer tank 3 and a fire extinguishing ring pipe 1 located at the static seal of the chemical equipment. The lower tube wall of the fire extinguishing ring pipe 1 is provided with a plurality of atomizing nozzles along a circle of the fire extinguishing ring pipe 1. The plurality of atomizing nozzles are evenly spaced. The static seal of the chemical equipment includes valve seal, pipeline flange connection, pump seal, container seal, etc. The fire extinguishing ring pipe 1 can be fully encircled at the static sealing component, and the atomizing nozzle sprays steam to achieve the best fire extinguishing effect; the fire extinguishing ring pipe 1 is tilted above the dehydration buffer tank 3, and the tilted lower end pipe body is correspondingly connected to the top of the dehydration buffer tank 3 through the steam outlet pipe 2, so that the stored water can automatically fall to the dehydration buffer tank 3 under its own weight; according to needs, the angle between the fire extinguishing ring pipe 1 and the horizontal plane is 5 to 20 degrees. If the angle is too large, the steam sprayed from each atomizing nozzle will contact the high-temperature static sealing component and there will be a front and rear interval to form a temperature difference. If the angle is too small, the stored water will not fall naturally.

[0021] The middle tank wall of the dehydration buffer tank 3 is connected to a steam inlet pipe 4, and a steam inlet control valve 5 is installed at the far end of the steam inlet pipe 4. The steam inlet pipe 4 ensures a slope setting so that the proximal end is higher than the distal end. The steam inlet pipe 4 body between the steam inlet control valve 5 and the dehydration buffer tank 3 near the steam inlet control valve 5 is connected to a vent pipe with a vent valve 6, and the bottom end of the dehydration buffer tank 3 is connected to a drain pipe with a drain valve 7. The tank wall near the bottom end of the dehydration buffer tank 3 is connected to a drain pipe with a drain valve 8, and a steam trap 9 is also installed on the drain pipe; as needed, the port of the drain pipe connected to the dehydration buffer tank 3 is at least 10 cm higher than the upper port of the drain pipe to prevent impurities in the water from clogging the steam trap 9.

[0022] In the improved fire extinguishing steam device of the utility model, before the device is put into use for fire extinguishing, the vent valve 6 and the drain valve 7 are always in the open state to ensure that any water remaining in the fire extinguishing ring pipe 1, the dehydration buffer tank 3 and the steam inlet pipe 2 is drained; after the device is put into use, the vent valve 6 and the drain valve 7 are closed, and the drain valve 8 is opened, and the dehydration buffer tank 3 is used to dehydrate and collect a large amount of condensed water in the initial preheating steam to prevent it from being sprayed out from the atomizing nozzle, and impurities are precipitated on the bottom of the water in the lower part of the dehydration buffer tank 3, and the relatively clean water overflowing the port of the drain pipe is drained from the drain pipe. Embodiment 2:

[0023] As attached Figure 2As shown, on the basis of Example 1, the proximal end of the steam inlet pipe 4 is designed to be tangent to the wall of the dehydration buffer tank 3, and a certain centrifugal effect is used to throw water droplets out and fall; as needed, the lower end of the steam outlet pipe 2 is located at the center of the top of the dehydration buffer tank 3, and extends vertically into the dehydration buffer tank 3 to prevent the water on the top wall of the dehydration buffer tank 3 from being directly blown into the steam outlet pipe 2; in addition, a mesh ring plate 10 is coaxially fixed to the upper inner tank wall of the dehydration buffer tank 3, which is used to attach and block the water droplets from rising, while not hindering the steam from entering the steam outlet pipe 2, and the inner circle of the mesh ring plate 10 is lower than the outer circle, so that the water droplets on the mesh ring plate 10 can be easily gathered and dripped.

[0024] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. An improved fire extinguishing steam device, characterized in that: The invention comprises a dehydration buffer tank (3) and a fire extinguishing ring pipe (1) located at a static seal of chemical equipment, wherein a plurality of atomizing nozzles are arranged around the lower pipe wall of the fire extinguishing ring pipe (1), the fire extinguishing ring pipe (1) is arranged obliquely above the dehydration buffer tank (3), and the inclined lower end pipe body is correspondingly connected to the top of the dehydration buffer tank (3) through a steam outlet pipe (2); the middle tank wall of the dehydration buffer tank (3) is connected to a steam inlet pipe (4), and the steam inlet pipe (4) is connected to the middle tank wall of the dehydration buffer tank (3). A steam inlet control valve (5) is installed at the far end of the pipe (4); a vent pipe with a vent valve (6) is connected to the body of the steam inlet pipe (4) between the steam inlet control valve (5) and the dehydration buffer tank (3) near the steam inlet control valve (5); a drain pipe with a drain valve (7) is connected to the bottom end of the dehydration buffer tank (3); a drain pipe with a drain valve (8) is connected to the tank wall near the bottom end of the dehydration buffer tank (3); and a steam trap (9) is also installed on the drain pipe.

2. The improved fire extinguishing steam device according to claim 1, characterized in that: Multiple atomizing nozzles are evenly spaced.

3. The improved fire extinguishing steam device according to claim 1, characterized in that: The angle between the fire extinguishing ring pipe (1) and the horizontal plane is 5 to 20 degrees.

4. The improved fire extinguishing steam device according to claim 1, characterized in that: The port of the drain pipe connected to the dehydration buffer tank (3) is at least 10 cm higher than the upper port of the sewage pipe.

5. The improved fire extinguishing steam device according to claim 1, characterized in that: The proximal end of the steam inlet pipe (4) is tangent to the tank wall of the dehydration buffer tank (3).

6. The improved fire extinguishing steam device according to claim 1, characterized in that: The lower end of the steam outlet pipe (2) is located at the center of the top of the dehydration buffer tank (3) and extends vertically into the dehydration buffer tank (3).

7. The improved fire extinguishing steam device according to claim 1, characterized in that: A mesh ring plate (10) is coaxially fixed to the upper inner tank wall of the dehydration buffer tank (3).

8. The improved fire extinguishing steam device according to claim 7, characterized in that: The inner ring of the mesh ring plate (10) is lower than the outer ring.

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