Head of torch plant

FIELD: arrangements or devices for treating smoke or fumes.

SUBSTANCE: head comprises gas supply pipe with gas gate and protecting shield mounted outside and coaxially at the top end of the gas supply pipe. The protecting shield is composed of two baffles made of two hollow trancated cones mounted one on the other. The grater base of the top baffle faces downward, and that of the bottom baffle faces upward. The smaller base is connected with the gas supply pipe.

EFFECT: enhanced reliability and prolonged service life.

2 cl, 2 dwg

 

The invention relates to a device for combustion of accidental releases of gas in various industries, for example in the oil and gas industry.

Known flare tip containing gas supply pipe confused on the end which made vertical cuts with installed sectors, forming a radiating gas supply channels, and the flame stabilizer in an open top of a geometric body installed inside the upper part of the gas supply tube coaxially and with a gap to the confuser connected to radial nozzles, the peripheral ends of which are communicated with the atmosphere (see Patent No. 1626048, MKI F 23 G 7/06, F 23 B 5/00; B. I. No. 5, 1991).

The flame stabilizer in the specified flare tip made in the form of bowls and has the shape of a half, and radial nozzles are made with decreasing from the periphery to the center cross-section, with their peripheral ends are located on the generatrix of the surface of the confuser gas supply pipe between the vertical cuts. The stabilizer of this design allows you to actinovate the air in pricebuy zone of ignition, which intensifies the mixing of waste gas with air and the combustion of the mixture.

The disadvantage of this tip are burnout gas supply pipe due to blowing is Lamani in the stem of this pipe and burnout tip due to blockages of the flame on the outside of the tip below its cutoff to leeward.

The closest in technical essence is the flare tip containing gas supply pipe from gas valve and a conical protective screen installed outside and coaxially on the upper end of gas supply pipe (see Jet torches type Fluidic Flares firm NaO, USA).

Thanks installed on the gas supply pipe of the specified tip conical protective screen between the walls of the pipe and screen space is formed, excluding the lowering of the flame on the trunk of a gas supply pipe in a strong crosswind.

The disadvantages of the known heads are large aerodynamic resistance to air flow of the protective screen, requiring high rigidity of the tip, and burnout conical protective screen due to blockages of the flame at the tip and encapsulating them with a protective screen to leeward, and flameout when strong gusts of wind.

The objective of the invention is to improve the reliability and durability of the protective screen and the tip as a whole by eliminating blockages of the flame shield and flame failure in crosswind.

The problem is solved due to the fact that in the known flare tip containing gas supply pipe from gas valve and a protective screen installed outside and coaxially on the top to the nce gas supply pipe; the protective screen is made of two walls in the form of two hollow truncated cones mounted on each other coaxially and motionless, the top of which overlooks a large base down, bottom - up a large base and a small base is connected with a gas supply pipe, while the middle part of the side surface of the lower walls are made of parts that are installed on the generatrix of a cone with a gap relative to each other and facing peaks out.

In addition, the line connecting the large bases of the walls is on the cutting gas supply pipe.

Figure 1 shows the flare tip, a longitudinal section; figure 2 is a section along a-a in figure 1.

The tip contains a gas supply pipe 1 with a gas gate 2 and shield 3, installed on the outside and coaxially on the upper end of the gas supply pipe 1. Protective screen 3 is made of two partitions - the top 4 and bottom 5 in the form of two hollow truncated cones mounted on each other coaxially and motionless. The top wall 4 facing a large base down, the bottom wall 5 - up a large base and a small base is connected with a gas supply pipe 1. The middle part of the side surface of the lower partition wall 5 is made of over 6 installed on the generatrix of a cone with a gap relative to each other and facing the top and to the outside. Corners 6 with the angle between the shelves 45°installed at an angle of 22.5° to the pipe axis, play the role of a stabilizer flame during combustion of the combustible mixture.

The line of connection of the large bases of the upper 4 and lower 5 partitions located on the cutting gas supply pipe 1.

The tip works as follows.

Discharge gas is supplied to the gas supply pipe 1 from the bottom, passes through this pipe gas valve 2, straightens up and released into the atmosphere. Ejected from the gas supply pipe 1 discharge gas engages in joint upward movement of the air from the surrounding space above the head, and from the space between the shield 3 and the gas supply pipe 1. As a result of intensive mixing of the waste gas with air above the cut gas supply pipe 1 is formed combustible mixture which is ignited by the flame of the pilot burner.

When side winds the air from the windward side of the lower partition wall 5 is directed through the gaps between the parts 6 in the space between the gas supply pipe and a protective screen 3. The resistance of the lower partition 5 to the inlet airflow from the windward side in the gaps between the corners of the 6 little due to the lightweight wrap airflow over 6 located peaks towards the flow. The resistance of the lower partition 5 to the exit of the air is Otok downwind through the gaps between corners 6 large because of the difficulty wrapping airflow over 6, located peaks in the direction of flow. Thus, when side winds bottom wall 5 of the protective screen 3 works as aerodynamic diode, passing the airflow from the windward side and holding it on the leeward side of the head. In such wind conditions will balance the pressures in the space between the bottom wall 5 and a gas supply pipe 1 from the windward and leeward sides of the head. In the equalization of the pressures in the space between the shield 3 and the gas supply pipe 1 emitted from this space up the air pushes Savelieva from side winds flame up, straightening his.

When crosswind airflow at a meeting with the top wall 4 changes the direction of its movement, moving along the side wall of the upper partition 4 from the windward side. Reaching the top edges of the top walls 4, the air flow breaks down and is fond of flow of the combustible mixture up. As a result, in the cavity of the upper partition wall 4, an underpressure is created, facilitating suction of air from the surrounding space through the gaps between the parts 6 in the space between the gas supply pipe 1 and the upper wall 4.

The perform of the bottom walls 5 in the form of a truncated cone, facing a large basis is receiving up and the middle part of the side surface of the walls of which are located relative to each other with a gap of over 6, facing peaks out, reduces the aerodynamic resistance of the protective screen 3 and its mass compared to the prototype.

The proposed design of the tip prevents burnout protective screen due to the straightening of the flame when it is collapsing due to exposure to wind drift, which increases the reliability and durability of the protective screen and tip in General. This reduces operating costs.

1. Flare tip containing gas supply pipe from gas valve and a protective screen installed outside and coaxially on the upper end of the gas supply pipe, wherein the protective screen is made of two walls in the form of two hollow truncated cones mounted on each other coaxially and motionless, the top of which overlooks a large base down, bottom - up a large base and a small base is connected with a gas supply pipe, while the side surface of the lower walls are made of parts that are installed on the generatrix of a cone with a gap relative to each other and facing peaks of the corners outward.

2. The cap according to claim 1, characterized in that the line of connection of the large bases of the walls of the upper and lower whic is ogena on the cutting gas supply pipe.



 

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12 cl, 12 dwg

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