CN211146490U

CN211146490U - Double-fire source burner for oil field water jacket furnace

Info

Publication number: CN211146490U
Application number: CN201921928732.1U
Authority: CN
Inventors: 赵学功; 朱克海; 张前保; 刘子滨; 王健
Original assignee: Sinopec Shengli Oilfield Co Linpan Oil Production Plant
Current assignee: Sinopec Shengli Oilfield Co Linpan Oil Production Plant
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-31
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a two burning things which may cause a fire disaster combustors of oil field water jacket stove, this combustor includes that the back end plate body is equipped with the interior burning pipe and the front end pipe body of fresh air inlet are equipped with the inner flame spray tube of nozzle, the rear end at interior burning pipe is installed to the inner flame spray tube, outer burning pipe is still equipped with to the front portion of interior burning pipe, the burner plate is equipped with outer flame burning pipe hole and interior burning pipe hole, the burner plate is fixed at the front end of outer burning pipe and interior burning pipe, outer flame intake pipe and air-supply line setting in the both sides of interior burning pipe and respectively with outer burning pipe and the annular space intercommunication between the burning pipe. The utility model discloses simple structure, convenient operation can the optional combustion mode, and internal combustion pipe and outer combustion pipe mixability use, also can the exclusive use. The gas source can be saved, the natural gas consumption is reduced, the flue cleaning work and the furnace tube coking cleaning work are reduced, the environment-friendly combustion standard is reached, the pollution emission is reduced, the labor intensity of workers is reduced, the phenomenon of fire overflow is not easy to occur in the furnace body, and the safety factor is improved.

Description

Double-fire source burner for oil field water jacket furnace

Technical Field

The utility model relates to an air supply combustion device of a water jacket furnace in the petroleum industry, in particular to a double-fire source combustor of the water jacket furnace in an oil field.

Background

In the oil production management, the water jacket furnace is a special heating device for oil transportation of an oil well, and is mainly used for heating crude oil to a certain temperature to reduce back pressure so as to meet the process requirements of crude oil outward transportation, sedimentation, dehydration and the like. The heating principle is that after the combustible fuel is burnt in the fire tube, the generated heat energy is transferred to water in the water jacket furnace in the heat transfer modes of radiation, convection and the like, so that the temperature of the water is raised and is partially vaporized, and the water and steam thereof transfer the heat to crude oil in the oil coil pipe, so that the oil obtains the heat and the temperature is raised. The temperature of the produced fluid of the oil well passing through the oil well is raised to meet the conveying requirement.

The water jacket furnace combustor is divided into a normal pressure combustion fire tube and a negative pressure combustion fire tube. The normal pressure combustion fire tube uses a fan to forcibly supply air to the hearth and is provided with an automatic ignition and flameout protection device, and the burner has high cost and complex management.

The required air of negative pressure burning firetube is the natural air inlet, and firetube simple structure, convenient to use, low cost need not dispose other equipment, can self-control, nevertheless has following problem: 1. the phenomenon that the environment is not up to standard due to incomplete combustion of the water jacket furnace and black smoke emission exists in the combustion process of the fire tube of the water jacket furnace; 2. the fuel is not completely combusted, the coefficient of excess air is too small, water vapor is suddenly condensed when the smoke rises to the top of the chimney, water drops flow down along the chimney and are collected in a hearth, water flows out of the bottom of the heating furnace, the chimney drops are corroded, and the service life of the chimney is shortened; 3. the heating furnace has insufficient negative pressure, insufficient oxygen supply and insufficient combustion, and causes cigarette ash to block a flue, the chimney is easy to be deposited with ash and scale, the phenomenon of blocking the flue exists, and the water jacket furnace is scrapped when the blockage is serious. 4. The burning is insufficient, and the burning of heavy components into coke during burning blocks the fire tube, so that the burning effect of the fire tube is worse. The fire tube is blocked and flamed out when coking occurs, and the fire tube needs to be cleaned frequently, so that the workload is increased. 5. The phenomenon of air source waste due to low thermal efficiency during combustion.

The burners used by the oil well water jacket furnace are usually self-made, and particularly the burners used by the single well and remote oil well water jacket furnace are self-made. The single-well water jacket furnace generally adopts 6 branch pipes, and the front end of the single-well water jacket furnace is sawn into a plurality of saw seams by a hand steel saw to be used as an air outlet combustion hole. The main line furnace generally adopts a common furnace end formed by welding a large pipe sleeve and a small pipe together. Because the purity of the gas source can not be guaranteed, the nozzle is easy to coke, thereby affecting the combustion effect and not guaranteeing the heat efficiency. The structure of the above water jacket furnace burner needs to be improved.

Disclosure of Invention

The utility model aims at providing an oil field water jacket stove double-fire-source combustor solves the problem that water jacket stove combustion tube coking, extravagant air supply and thermal efficiency are low, the energy saving, the environmental protection.

The technical solution of the utility model is that:

the double-fire-source combustor of the oil field water jacket furnace comprises an inner combustion pipe and an inner flame spray pipe, wherein the inner combustion pipe is provided with an air inlet hole in the rear end plate body, the front part of the inner combustion pipe is provided with an outer combustion pipe, the combustion plate is provided with an outer flame combustion pipe hole and an inner combustion pipe hole, the combustion plate is fixed at the front end of the outer combustion pipe and the inner combustion pipe, and an outer flame air inlet pipe and an air inlet pipe are arranged on two sides of the inner combustion pipe and respectively communicated with an annulus between the outer combustion pipe and the inner combustion pipe.

The pipe body of the inner burner pipe is in a waist drum shape, the pipe body diameters of two ends are larger than the pipe body diameter of the middle section, and the pipe body of the middle section is respectively a reducing pipe, a throat pipe and a diffusion pipe.

The inner diameter of the outer combustion pipe is larger than the outer diameter of the inner combustion pipe, the outer flame combustion pipe hole is formed in the combustion plate between the inner combustion pipe and the outer combustion pipe, and the inner combustion pipe hole is formed in the combustion plate at the front end of the inner combustion pipe.

The aperture of the inner combustion pipe hole is larger than that of the outer flame combustion pipe hole, and the outer flame combustion pipe hole can be a taper hole or a straight hole with a small inner part and a large outer part.

The rear portion of the inner flame spray pipe is also provided with an air door adjusting plate, an air door adjusting hole and an air door adjusting handle are arranged on a plate body of the air door adjusting plate, and the outer diameter of the plate body of the air door adjusting plate is equal to or larger than that of the pipe body at the rear end of the inner combustion pipe.

The nozzle is of a conical structure, and the front-end pipe orifice is smaller than the rear-end pipe orifice.

Compared with the existing water jacket furnace burner, the utility model has the advantages that: the burner has improved the structure of the combustion tube, has set up two combustion tubes, it is the inner combustion tube and outer combustion tube respectively, the body of the inner combustion tube is the waist drum shape moreover. When the working gas is ejected from the nozzle at a high speed, the surrounding air is blown away by the jet flow at the inlet of the throat pipe in the inner combustion pipe to form vacuum, the surrounding air is sucked immediately, the fuel gas and the air are mixed in the throat pipe and exchange kinetic energy, so that the kinetic energy of the conveyed gas is increased, most of the kinetic energy is converted into pressure energy through the diffusion pipe, and finally the combustion is released, so that the heat efficiency can be improved by 10-15%. The air door regulating plate arranged at the rear part of the inner flame spray pipe can regulate the air inlet amount according to the combustion condition, and the associated gas used as fuel gas is fully mixed with the air, so that the combustion effect can be improved.

Because the pressure of natural gas has an effect relation with the diameter of burning tube hole, burning tube hole diameter is too big to lose the injection effect, diameter undersize burning heat is not enough again, for the compensation burning, has added outer burning pipe in the internal combustion pipe outside, and outer burning pipe comprises outer flame intake pipe and blast pipe, and the natural gas that outer flame intake pipe sent forms negative pressure and the air in the blast pipe enters into the annular space internal mixture burning between internal combustion pipe and the outer burning pipe when burning. When natural gas enters the outer combustion tube, because the temperature of the inner combustion tube is higher, light components in the gas are gasified at high temperature, so that pollution is reduced, and the combustion effect is improved.

The internal combustion pipe utilizes the jet principle to form negative pressure at the reducing pipe, natural gas and air are fully mixed at the rear pipe body of the internal combustion pipe, and the jet flow enters the throat pipe from the reducing pipe, the pressure rises, and the natural gas and the air are diffused to the pressure reduction of the diffusing pipe and are combusted at the combustion plate provided with the honeycomb holes. The air door adjusting plate is arranged at the rear part of the inner flame spray pipe, the air inlet amount can be adjusted according to the combustion condition, and the associated gas and the air are fully mixed through air inlet of the air door adjusting plate, so that the combustion effect is improved.

The nozzle at the front part of the inner flame spray pipe adopts a jet structure, the entering of external combustion-supporting air is increased, the heating efficiency is increased by the outer combustion pipe, and the combustion heat efficiency can be improved by about 20% under the same air source condition.

The combustor can also independently use the inner combustion pipe or the outer combustion pipe according to the actual condition of the water jacket furnace, and the air supply valve of the outer flame air inlet pipe is closed when the inner combustion pipe is independently used for combustion.

When the outer combustion pipe is used alone for combustion, the air supply valve of the inner combustion pipe is closed, the inner combustion pipe is used as an air inlet at the moment, and the air inlet amount of the air door is adjusted to achieve the best combustion effect.

To sum up the utility model discloses simple structure, convenient operation has the combustion effect and the using value that are showing, and the concrete expression is in:

1. the combustion mode is selected at will, the inner combustion pipe and the outer combustion pipe can be used in a mixed mode or can be used independently, and the adjustment is convenient.

2. The gas source is saved, the consumption of natural gas is reduced, and the natural gas amount can be saved by 30-40% under the same condition. In the same water jacket furnace test, the self-made fire-making pipe consumes more than 450 gas every day, and by using the burner, more than 200 cubic meters of natural gas can be saved every day, thereby achieving the effect of increasing the heating efficiency.

3. The flue cleaning work and the furnace tube coking cleaning work are reduced, the environment-friendly combustion reaches the standard, the pollution emission is reduced, the working efficiency is improved, the labor intensity of workers is reduced, the phenomenon of fire overflow caused by oil feeding is not easy to occur in the furnace body, and the safety factor is improved

4. Because the nozzle adopts a jet structure, part of light components can be filtered, the burner is not coked due to secondary filtration of combustion gas, and the burner body does not need to be cleaned.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the double-fire-source combustor of the oil field water jacket furnace comprises an inner combustion pipe 8 with an air inlet hole 3 on a rear end plate body and an inner flame spray pipe 1 with a nozzle 4 on a front end pipe body, wherein the inner flame spray pipe 1 is arranged at the rear end of the inner combustion pipe 8; the front portion of interior burning pipe 8 still is equipped with outer burning pipe 12, and burner plate 9 is equipped with outer flame burning tube hole 11 and interior burning tube hole 10, and burner plate 9 is fixed at the front end of outer burning pipe 12 and interior burning pipe 8, and outer flame intake pipe 14 and air-supply line 6 set up in the both sides of interior burning pipe 8 and respectively with the annular space intercommunication between outer burning pipe 12 and the interior burning pipe 8.

The pipe body of the inner burner pipe 8 is in a waist drum shape, the pipe body diameters of two ends are larger than the pipe body diameter of the middle section, and the pipe body of the middle section is respectively a reducing pipe 5, a throat pipe 13 and a diffusion pipe 7. After entering the inner combustion pipe 8, the fuel gas is mixed with the gas in the rear pipe body and then sucked into the front pipe body to be combusted. The natural gas and the air can form negative pressure in the inner combustion pipe 8, the natural gas and the air are fully mixed in the pipe body at the rear part of the inner combustion pipe 8 and enter the throat pipe 13 through the jet flow of the reducing pipe 5, the pressure is reduced after the pressure is increased and enters the pipe body at the front part of the inner combustion pipe 8 through the diffusion pipe 7, and the natural gas and the air are combusted at the position of the inner combustion pipe hole 10, so that the combustion effect after the gas and the air are mixed is better.

The inner diameter of the outer combustion pipe 12 is larger than the outer diameter of the inner combustion pipe 8, the outer flame combustion pipe hole 11 is arranged in the combustion plate 9 between the inner combustion pipe 8 and the outer combustion pipe 12, and the inner combustion pipe hole 10 is arranged in the combustion plate 9 at the front end of the inner combustion pipe 8.

The aperture of the inner combustion pipe hole 10 is larger than that of the outer flame combustion pipe hole 11, and the outer flame combustion pipe hole 11 can be a taper hole or a straight hole with a small inner part and a large outer part.

The rear portion of the inner flame spray pipe 1 is also provided with an air door adjusting plate 15, an air door adjusting hole 2 and an air door adjusting handle 16 are arranged on a plate body of the air door adjusting plate 15, and the outer diameter of the plate body of the air door adjusting plate 15 is equal to or larger than that of a pipe body at the rear end of the inner combustion pipe 8. The air door adjusting plate 15 is arranged at the air inlet hole 3 of the rear end plate body of the inner combustion pipe 8, the air inlet amount can be adjusted according to the combustion condition, the mixing of the oil well associated gas used as fuel gas and air is more sufficient, and the combustion effect can be improved.

The nozzle 4 is of a conical structure, the front end pipe orifice is smaller than the rear end pipe orifice, and fuel gas entering the nozzle can be ejected in a jet flow shape.

This device is placed in water jacket furnace, places air door regulating plate 15 at device rear portion outside furnace, and the air of being convenient for mixes and gets into in this combustor and conveniently adjusts the intake, and the air supply of interior burning pipe 8 passes through the air supply valve and connects in the screw thread department of interior flame spray tube 1 rear end, and the air supply of outer burning pipe 12 is connected in the mouth of pipe position of outer flame intake pipe 14 rear end.

When the air door adjusting plate is used, after ignition and combustion, the air inlet amount of the water jacket furnace can be adjusted through the air door adjusting plate 15, and the optimal combustion effect is achieved.

The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.

Claims

1. Two fire source combustors of oil field water jacket stove, the interior burning pipe that is equipped with the fresh air inlet including the back end plate body and the interior flame spray tube that the front end pipe body was equipped with the nozzle, the rear end at interior burning pipe is installed to the interior flame spray tube, characterized by, outer burning pipe is still equipped with to the front portion of interior burning pipe, the combustion plate is equipped with outer flame burning tube hole and interior burning pipe hole, the front end at outer burning pipe and interior burning pipe is fixed to the combustion plate, outer flame intake pipe and air-supply line setting are in the both sides of interior burning pipe and respectively with outer burning pipe and the annular space intercommunication between the burning pipe.

2. The dual fire source burner of claim 1, wherein the inner burner tube has a waist-drum shape with two ends having a larger diameter than the middle tube, and the middle tube is a reducing tube, a throat and a diffuser.

3. The dual fire source burner of the oil field water jacket furnace as claimed in claim 1, wherein the outer combustion pipe has an inner diameter larger than an outer diameter of the inner combustion pipe, the outer flame combustion pipe hole is provided in the combustion plate between the inner combustion pipe and the outer combustion pipe, and the inner combustion pipe hole is provided in the combustion plate at the front end of the inner combustion pipe.

4. The dual fire source burner of the oil field water jacket furnace according to claim 1 or 3, wherein the inner burner tube hole has a larger diameter than the outer flame burner tube hole, and the outer flame burner tube hole can be a tapered hole or a straight hole with a small inside and a large outside.

5. The dual fire source burner of the oil field water jacket furnace as claimed in claim 1, wherein the rear portion of the inner flame nozzle is further provided with an air door adjusting plate, the plate body of the air door adjusting plate is provided with an air door adjusting hole and an air door adjusting handle, and the outer diameter of the plate body of the air door adjusting plate is equal to or larger than the outer diameter of the pipe body at the rear end of the inner combustion pipe.

6. The dual fire source burner of an oil field water jacket furnace as claimed in claim 5, wherein said nozzle is of a conical configuration with a smaller forward end orifice than a rearward end orifice.