A burner for heating a furnace fire tube

Abstract

The present invention discloses a burner for a fire barrel of a heating furnace, comprising a shell, a drop-in liquid level transmitter and a bracket. The drop-in liquid level transmitter comprises a liquid level transmitter body, a liquid level probe and a pressure pipe connecting the transmitter body and the liquid level probe. The liquid level transmitter body is fixed to the outside of the shell through the bracket, the pressure pipe passes through the shell, and the liquid level probe is arranged at the lower part of the shell inner cavity or in front of the shell inner cavity. A liquid leakage detection device is installed on the burner of the present invention. The liquid level probe of the liquid leakage detection device can detect whether there is liquid at the lower part of the fire barrel. If no liquid is sensed, it is in a normal working state. After the liquid level probe senses the presence of liquid, the liquid level transmitter body transmits a signal to the main control cabinet through the line, and performs a fire extinguishing operation on the fire barrel, so as to quickly extinguish the fire in the fire barrel.

Description

[Technical field]

[0001] The invention relates to an oil field heating furnace, in particular to a burner of a heating furnace fire tube. [Background Technology]

[0002] The oilfield heating furnace, referred to as the fire tube furnace, is a heating equipment widely used in oilfields to heat the multiphase mixed liquid in oilfield production. The multiphase mixed liquid includes oil, water and other impurities. The oilfield heating furnace includes a furnace body and a fire tube, wherein the fire tube is the main heating device of the heating furnace, including a fire tube, a burner and a smoke tube. The burner is installed on the outside of the furnace body, at the rear end of the fire tube. The fuel is ignited in the burner at the rear end of the fire tube and sprayed into the fire tube for combustion. The multiphase mixed liquid outside the fire tube convects heat with the outer wall of the fire tube to achieve oil-water separation. However, if the fire tube is perforated due to fire, the multiphase mixed liquid will flow into the fire tube and cause a fire. At present, there is no detection device specifically for the leakage of the fire tube of the oilfield heating furnace, and the leakage of the fire tube cannot be detected quickly, and the fire extinguishing response of the leakage of the fire tube is slow. [Summary of the invention]

[0003] The technical problem to be solved by the present invention is to provide a burner for a heating furnace fire barrel which can quickly detect fire barrel leakage so as to quickly extinguish fire in the fire barrel.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is a burner for a heating furnace fire barrel, comprising a shell, a immersion liquid level transmitter and a bracket. The immersion liquid level transmitter comprises a liquid level transmitter body, a liquid level probe and a pressure pipe connecting the transmitter body and the liquid level probe. The liquid level transmitter body is fixed to the outside of the shell by the bracket, the pressure pipe passes through the shell, and the liquid level probe is arranged at the lower part of the shell cavity or in front of the shell cavity.

[0005] The burner of the heating furnace fire tube described above has an inner cavity of the shell including a jacket, and the lower part of the annular rear wall of the jacket includes a pressure pipe hole and a plurality of threaded holes; a fixing ring is installed in the pressure pipe hole, and the pressure pipe passes through the inner hole of the fixing ring and enters the jacket of the burner shell; the front plate of the bracket is fixed to the annular rear wall of the jacket by a plurality of screws.

[0006] The burner of the heating furnace fire tube described above, the fixed ring is a three-point heat reduction type fixed ring, the outer periphery of the three-point heat reduction type fixed ring includes three ridges arranged separately along the circumferential direction, and the three ridges of the three-point heat reduction type fixed ring are supported by three points of the pressure pipe hole.

[0007] The burner of the heating furnace fire barrel described above, the bracket includes a base plate. The base plate includes a mounting hole; the immersion liquid level transmitter includes a nut and two insulation pads, the upper end of the liquid level transmitter body includes a threaded shaft head, the threaded shaft head passes through the mounting hole of the base plate, and the nut is screwed on the upper end of the threaded shaft head; two insulation pads are sleeved on the threaded shaft head, one is located below the base plate, and the other is located above the base plate; the aperture of the mounting hole is larger than the diameter of the threaded shaft head, and there is an insulation gap between the threaded shaft head and the mounting hole.

[0008] The burner of the heating furnace fire tube described above, the bracket includes an arc-shaped top plate, and the mounting hole of the bottom plate is located at the rear of the bracket; the top plate serves as an insulation plate to cover the pressure pipe outside the burner and the top of the liquid level transmitter body.

[0009] The burner of the heating furnace fire tube described above has a support whose outer surface facing the burner is sprayed with nano heat-insulating paint.

[0010] The burner of the heating furnace fire tube described above, the pressure pipe led out from the upper end of the liquid level transmitter body surrounds a flat and long ring with its long axis in the horizontal direction and then enters the shell.

[0011] In the burner of the heating furnace fire tube described above, the pressure-conducting pipe led out from the upper end of the liquid level transmitter body is wound around a plurality of spiral rings before entering the burner shell.

[0012] The burner of the heating furnace fire tube described above, the front plate of the bracket, the rear plate of the bracket and the bottom plate of the bracket each include a heat-reducing overhead hole.

[0013] The burner of the present invention is equipped with a liquid leakage detection device. The liquid level probe of the liquid leakage detection device can detect whether there is liquid under the fire tube. If no liquid is sensed, it is in a normal working state. After the liquid level probe senses the presence of liquid, the liquid level transmitter body transmits a signal to the main control cabinet through the line, and the fire tube is extinguished to quickly extinguish the fire in the fire tube. [Drawings]

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a front view of a fire tube burner of a heating furnace according to an embodiment of the present invention.

[0016] Figure 2 It is a left side view of a fire tube burner of a heating furnace according to an embodiment of the present invention.

[0017] Figure 3 yes Figure 2 AA section view in.

[0018] Figure 4 It is a three-dimensional diagram of a fire tube burner of a heating furnace according to an embodiment of the present invention.

[0019] Figure 5 It is a three-dimensional diagram of a liquid leakage detection device according to an embodiment of the present invention.

[0020] Figure 6 1 is an exploded view of a liquid leakage detection device according to an embodiment of the present invention. [Specific implementation method]

[0021] The structure of the fire tube burner of the heating furnace in the embodiment of the present invention is as follows: Figures 1 to 6 As shown, it includes a burner and a liquid leakage detection device.

[0022] The leakage detection device comprises a submersible liquid level transmitter 10 and a bracket 20. The submersible liquid level transmitter 10 comprises a liquid level transmitter body 11, a liquid level probe 12, a pressure pipe 13, a mounting nut 14, a heat insulating pad 15 and a heat insulating pad 16. The liquid level probe 12 is connected to the liquid level transmitter body 11 through the pressure pipe 13.

[0023] The inner cavity of the shell 30 of the burner includes an annular jacket 31. In this embodiment, the lower part of the annular rear wall 32 of the jacket 31 has a pressure pipe hole 321 and two threaded holes (not shown in the figure). The pressure pipe fixing ring 17 is installed in the pressure pipe hole 321.

[0024] The bracket 20 includes a front plate 21, a top plate 22 and a bottom plate 23. The bracket 20 is arranged below the burner housing 30, and the front plate 21 of the bracket 20 is fixed to the lower part of the annular rear wall 32 of the jacket 31 by two screws. The outer surface of the bracket 20 facing the burner housing is sprayed with nano thermal insulation paint to block the heat transferred from the heating furnace.

[0025] like Figure 6 As shown, the front plate 21 of the bracket 20 , the rear plate 24 of the bracket and the bottom plate 23 of the bracket each include a heat reduction overhead hole, which can reduce the heat conducted from the burner to the liquid level transmitter 10 .

[0026] The bottom plate 23 of the bracket 20 has a mounting hole 231, and the mounting hole 231 of the bottom plate 23 is located at the rear of the bracket 20. The upper end of the liquid level transmitter body 11 has a threaded shaft head 111, and the threaded shaft head 111 passes through the mounting hole 231 of the bottom plate 23, and the mounting nut 14 is screwed on the upper end of the threaded shaft head 111. The thermal insulation pad 15 and the thermal insulation pad 16 are sleeved on the threaded shaft head 111, the thermal insulation pad 16 is located below the bottom plate 23, and the thermal insulation pad 15 is located above the bottom plate 23. The signal line output connector 18 of the liquid level transmitter 10 is located at the lower end of the liquid level transmitter body 11. The diameter of the mounting hole 231 is larger than the diameter of the threaded shaft head 111. After the mounting nut 14 is tightened, there is a thermal insulation gap between the threaded shaft head 111 of the liquid level transmitter body 11 and the mounting hole 231.

[0027] After the pressure pipe 13 led out from the upper end of the liquid level transmitter body 11 surrounds a flat and long ring 13A with its long axis in the horizontal direction, the pressure pipe 13 passes through the pressure pipe fixing ring 17 and then enters the jacket 31 of the burner shell 30. The liquid level probe 12 is arranged at the front end of the jacket 31.

[0028] The pressure pipe fixing ring 17 is a three-point heat reduction fixing ring, and three ridges are arranged circumferentially on the outer circumference of the three-point heat reduction fixing ring. The three ridges of the three-point heat reduction fixing ring are supported at three points by the pressure pipe holes 321 to reduce heat transfer from the burner shell 30 to the pressure pipe 13.

[0029] The arc-shaped top plate 22 serves as a heat insulation plate to cover the flat and long ring 13A of the pressure pipe outside the burner and the top of the liquid level transmitter body 11, so as to reduce the influence of the heat radiation of the burner housing 30 on the liquid level transmitter.

[0030] Because the temperature on the burner shell is relatively high, the heat will be transferred to the bracket and then transmitted to the liquid level transmitter through the bracket, which is not conducive to the normal operation of the liquid level transmitter. In the above embodiments of the present invention, the distance from the liquid level probe to the liquid level transmitter body is lengthened by a flat long ring, and two insulation gaskets are used to separate the connection between the bracket and the liquid level transmitter body, so that the temperature of the liquid level transmitter body will not be affected by the heat radiation of the burner shell.

[0031] The distance from the level probe to the level transmitter body can also be lengthened by using multiple spiral rings in the shape of a spiral spring.

[0032] The burner of the above embodiment of the present invention is equipped with a liquid leakage detection device. The liquid level probe of the liquid leakage detection device can detect whether there is liquid under the fire tube. If no liquid is sensed, it is in a normal working state. After the liquid level probe senses the presence of liquid, the liquid level transmitter body transmits a signal to the main control cabinet through the line, and the fire tube is extinguished to quickly extinguish the fire in the fire tube.

Claims

1. A burner for heating a furnace fire tube, comprising a shell, characterized in that: The invention comprises a submersible liquid level transmitter and a bracket. The submersible liquid level transmitter comprises a liquid level transmitter body, a liquid level probe and a pressure pipe connecting the transmitter body and the liquid level probe. The liquid level transmitter body is fixed to the outside of the shell through the bracket. The pressure pipe passes through the shell. The liquid level probe is arranged at the lower part of the shell inner cavity or in front of the shell inner cavity. The shell inner cavity comprises a jacket. The lower part of the annular rear wall of the jacket comprises a pressure pipe hole and a plurality of threaded holes. A fixing ring is installed in the pressure pipe hole. The pressure pipe passes through the inner hole of the fixing ring and enters the jacket of the burner shell. The front plate of the bracket is fixed to the annular rear wall of the jacket by a plurality of screws. The fixing ring is a three-point heat-reducing fixing ring. The outer periphery of the three-point heat-reducing fixing ring comprises three ridges arranged separately along the circumferential direction. The three-point The three ridges of the heat-reducing fixed ring are supported at three points by the pressure pipe hole; the bracket includes a base plate. The base plate includes a mounting hole; the immersion type liquid level transmitter includes a nut and two thermal insulation pads, and the upper end of the liquid level transmitter body includes a threaded shaft head, the threaded shaft head passes through the mounting hole of the base plate, and the nut is screwed on the upper end of the threaded shaft head; two thermal insulation pads are sleeved on the threaded shaft head, one is located below the base plate, and the other is located above the base plate; the aperture of the mounting hole is larger than the diameter of the threaded shaft head, and there is a thermal insulation gap between the threaded shaft head and the mounting hole; the pressure pipe led out from the upper end of the liquid level transmitter body surrounds a flat and long ring with a long axis in the horizontal direction and then enters the shell, or the pressure pipe led out from the upper end of the liquid level transmitter body surrounds multiple spiral rings and then enters the burner shell.

2. The burner of the heating furnace fire tube according to claim 1, characterized in that: The bracket comprises an arc-shaped top plate, and the mounting hole of the bottom plate is located at the rear of the bracket; the top plate serves as a heat insulation plate to cover the pressure pipe outside the burner and the upper part of the liquid level transmitter body.

3. The burner of the heating furnace fire tube according to claim 1, characterized in that: The outer surface of the bracket facing the burner is sprayed with nano heat insulation paint.

4. The burner of the heating furnace fire tube according to claim 1, characterized in that: The front plate of the bracket, the rear plate of the bracket and the bottom plate of the bracket each include a heat reducing overhead hole.

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