CN212006215U

CN212006215U - Negative pressure heating furnace

Info

Publication number: CN212006215U
Application number: CN202020273325.8U
Authority: CN
Inventors: 陈广强; 李东林
Original assignee: Beijing Bright Petroleum Technology Co ltd
Current assignee: Beijing Bright Petroleum Technology Co ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-11-24
Anticipated expiration: 2030-03-06

Abstract

The utility model discloses a negative pressure heating furnace, which comprises a furnace body, wherein a sacrificial anode is arranged in the furnace body and welded on the furnace body to form a whole with the furnace body; a heat exchange device, a combustion device and a fuel preheating device are arranged in the furnace body; the heat exchange device is composed of a heating coil, and two ends of the heating coil extend out of the furnace body; the combustion device consists of a combustion chamber, a smoke pipe, a smoke box and a chimney short joint, wherein the combustion chamber, the smoke pipe, the smoke box and the chimney short joint are connected end to end, the end parts of the combustion chamber and the smoke box extend out of the furnace body, the chimney short joint is arranged at the upper part of the smoke box, and a negative pressure adjusting plate is arranged in the chimney short joint; the fuel preheating device is a preheating pipe consisting of independent pipelines, and two ends of the preheating pipe extend out of the furnace body. The utility model has the advantages of little water supplement, relatively stable water quality in the furnace and no need of frequent pollution discharge; the automatic temperature regulation and flameout protection functions can be realized, and the sacrificial anode is a current circulating body to prevent the corrosion of the furnace body; high heating efficiency and long service life.

Description

Negative pressure heating furnace

Technical Field

The utility model relates to a special firing equipment of oil gas field, especially a negative pressure heating furnace of arranging the heating coil of furnace body in the boiler waters.

Background

With continuous exploitation of oil fields, the gas consumption per ton also increases greatly, and energy waste and environmental pollution caused by heating furnaces, such as incomplete combustion of fuel, heat dissipation loss and the like, become problems that cannot be ignored in the whole oil field, so that the energy conservation and consumption reduction strength must be increased. The negative pressure heating furnace and the popularization and application of the technology thereof effectively solve the problem, and the furnace becomes an ideal replacement product of the traditional heating furnace of the oil field at present due to the advantages of low manufacturing cost, low energy consumption, high efficiency and the like. However, when the existing heating furnace runs under fuel oil or fuel gas, external power supply equipment is needed, and the existing heating furnace cannot adapt to the severe desert environment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defect that the existing heating furnace needs to have external power supply equipment, invent a negative pressure heating furnace of arranging furnace body heating coil in boiler waters, set up the sacrificial anode in the furnace body, the sacrificial anode welds and forms an organic whole with the furnace body on the furnace body, is the circulation body of an electric current, prevents the furnace body corrosion, sets up heating coil in the heating furnace, the negative pressure heating furnace that carries out the heat transfer in the furnace body through the working medium water in the stove and the heated medium in the coil, this kind of heating furnace adopts electroless negative pressure injection type combustion system, and control system adopts self-excitation formula pneumatic control mode, can realize the automatically regulated and the flame-out protect function of temperature.

The purpose of the utility model is realized through the following technical scheme:

a negative pressure heating furnace comprises a closed furnace body in an oxygen-free state, wherein a sacrificial anode is arranged in the furnace body, and is welded on the furnace body to form a whole with the furnace body, so that the sacrificial anode is a current circulating body; the furnace body is also internally provided with a heat exchange device, a combustion device and a fuel preheating device;

the heat exchange device is composed of a heating coil, the heating coil is arranged in the water area of the furnace body, and two ends of the heating coil extend out of the furnace body; the combustion device consists of a combustion chamber, a smoke pipe, a smoke box and a chimney short joint, wherein the combustion chamber, the smoke pipe, the smoke box and the chimney short joint are connected end to end, the end parts of the combustion chamber and the smoke box extend out of the furnace body, the chimney short joint is arranged at the upper part of the smoke box, and a negative pressure adjusting plate is arranged in the chimney short joint; the fuel preheating device is a preheating pipe consisting of independent pipelines, and two ends of the preheating pipe extend out of the furnace body.

Further, the negative pressure regulating plate is welded on a through long round steel by a circular plate smaller than the diameter of the chimney, the round steel stretches out of the short circuit of the chimney, the two sides of the round steel are fixed through nuts, and the regulating plate fixes the round steel through nuts after regulating a preset angle.

Furthermore, the negative pressure adjusting plate is welded on a full-length round steel by a circular plate which is 3 cm smaller than the diameter of the chimney.

Furthermore, the negative pressure heating furnace adopts an electroless negative pressure injection type combustion system, the combustion system adopts a self-excitation type pneumatic control mode to realize the functions of automatic temperature adjustment and flameout protection, and the negative pressure degree in the hearth is adjusted through a negative pressure adjusting plate to enable the combustion to reach the optimal state.

Furthermore, the part of the smoke box extending out of the furnace body is provided with an explosion-proof device, and the explosion-proof device is used for automatically exhausting and releasing pressure through an explosion-proof door of the explosion-proof device when deflagration occurs, so that the combustion device is prevented from being damaged.

Furthermore, the upper end of the furnace body is provided with an inspection opening, and the inspection opening is connected with an inspection channel inside the furnace body and used for inspecting the internal structure of the furnace body through the inspection channel of the inspection opening after the furnace is stopped.

Furthermore, a liquid level display port for installing a liquid level meter is arranged on the side of the furnace body.

Furthermore, the upper end of the furnace body is provided with a connecting hole for connecting an external device and symmetrical lifting lugs.

Furthermore, symmetrical supporting devices are welded at the lower end of the furnace body.

The utility model discloses an actively the effect as follows: because the utility model works in a closed environment, the heat carrier water is recycled, the water is not required to be supplemented in daily life, and only the furnace water needs to be replaced once a year, and the water in the furnace is relatively stable because of little water supplement, and the frequent pollution discharge is not required; because the furnace body works in an anaerobic state, mineral substances cannot be brought into the furnace along with water to cause the phenomena of scaling, overburning, bulging and the like, so that the furnace body cannot generate oxygen corrosion when running under negative pressure or micro positive pressure, and the safety performance is good; the sacrificial anode is welded on the furnace body and is integrated with the furnace body, and is a current circulating body to prevent the furnace body from being corroded; the heating furnace without the sacrificial anode is generally used for ten years, ten years are corroded and can not be used continuously after being detected again, the corrosion of the sacrificial anode is checked every year after the sacrificial anode is additionally arranged, if the sacrificial anode is corroded seriously and is replaced with a new sacrificial anode, the sacrificial anode is corroded as long as the corrosion exists during operation, a furnace body is not corroded, the condition that the maintenance and the operation are kept every year, the service life of the furnace body is designed under the condition that the design service life of ten years is achieved, and the service life of twenty years can be guaranteed. The utility model has high heating efficiency and long service life; the utility model discloses use oil and natural gas as fuel, be equipped with the combustor and adopt pneumatic control, it is sturdy and durable, need not any plus measure, lean on the combustor to control from the action of encouraging completely, adjust the negative pressure degree in the furnace through the negative pressure regulating plate and make the burning reach the optimum state, do not have to external dependence, consequently the combustor interference killing feature is strong, the good reliability.

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. In the drawings:

FIG. 1 is a front view structural diagram of the present invention;

FIG. 2 is a view showing the structure from the B-B direction in FIG. 1;

FIG. 3 is a view of the structure from A-A in FIG. 1;

fig. 4 is a schematic view of a negative pressure adjusting plate provided by the present invention;

in the figure: 1 furnace body 2 heating coil 3 combustion chamber 4 smoke pipe 5 smoke box 6 explosion-proof equipment 7 inspection hole 8 liquid level display hole 9 connecting hole 10 lifting lug 11 supporting device 12 fuel preheating device 13 chimney short circuit 14 negative pressure regulating plate 15 sacrificial anode

Detailed Description

It should be noted at the outset that the examples of the present invention disclose only preferred embodiments, and should not be construed as limiting the practice of the invention, which is limited only by the disclosure of the claims.

As shown in figures 1-4, the embodiment of the utility model discloses a negative pressure heating furnace, negative pressure heating furnace includes airtight furnace body 1 under the anaerobic condition, sets up sacrificial anode 15 in the furnace body, sacrificial anode welds and forms an organic whole with the furnace body on the furnace body, is the circulation of an electric current, prevents that the furnace body from corroding.

A heat exchange device, a combustion device and a fuel preheating device 12 are arranged in the furnace body 1, the heat exchange device is composed of a heating coil 2, the heating coil is arranged in the water area of the furnace body, and two ends of the heating coil 2 extend out of the furnace body 1; the combustion device consists of a combustion chamber 3, a smoke pipe 4, a smoke box 5 and a chimney short joint 13, wherein the combustion chamber 3, the smoke pipe 4, the smoke box 5 and the chimney short joint 13 are connected end to end, the end parts of the combustion chamber 3 and the smoke box 5 extend out of the furnace body 1, the chimney short joint 13 is arranged at the upper part of the smoke box 5, and a negative pressure adjusting plate 14 is arranged in the chimney short joint 13; the fuel preheating device is a preheating pipe consisting of independent pipelines, and two ends of the preheating pipe extend out of the furnace body.

Negative pressure regulating plate 14 is by a 3 centimetres of plectane welding than the chimney diameter on leading to long round steel, and the round steel stretches out the chimney short circuit outside, and the round steel both sides are fixed through the nut, and the regulating plate is adjusted and is fixed the round steel through the nut after predetermined angle, if change readjust aperture and fix again.

The negative pressure heating furnace adopts an electroless negative pressure injection type combustion system, the combustion system adopts a self-excitation type pneumatic control mode to realize the functions of automatic temperature adjustment and flameout protection, and the negative pressure adjusting plate is used for adjusting the negative pressure degree in the hearth so as to enable the combustion to reach the optimal state.

The part of the smoke box extending out of the furnace body 1 is provided with an explosion-proof device 6, and the explosion-proof device is used for automatically exhausting and releasing pressure through an explosion-proof door of the explosion-proof device when deflagration occurs, so that the combustion device is prevented from being damaged.

The upper end of the furnace body 1 is provided with an inspection opening 7, the inspection opening is connected with an internal inspection channel of the furnace body and is used for inspecting the internal structure of the furnace body through the inspection channel of the inspection opening after the furnace is stopped.

And a liquid level display port 8 for mounting a liquid level meter is formed in the side of the furnace body 1.

The upper end of the furnace body 1 is provided with a connecting hole 9 for connecting an external device and symmetrical lifting lugs 10.

And symmetrical supporting devices 11 are welded at the lower end of the furnace body.

The utility model discloses a negative pressure heating furnace, which is an indirect heating hot water boiler and is formed by arranging a heating coil in the water space in the furnace body. When the utility model works, fuel enters the smoke pipe after being combusted in the combustion chamber and is finally discharged into the atmosphere through the smoke box, and in the process, the smoke radiates and releases heat in the combustion chamber and convectively releases heat in the smoke pipe, so that water (intermediate medium) in the furnace body is heated, and the heated medium in the heating coil pipe is supplied to a user for use after being heated; the fuel in the fuel preheating device is preheated to improve the combustion effect (the fuel with high temperature is easier to combust). The sacrificial anode is welded on the furnace body and is integrated with the furnace body, and is a current circulating body to prevent the corrosion of the furnace body. This negative pressure heating furnace can be water, crude oil, natural gas by heating medium, just in time is fit for the oil field condition, by the manifold demand of heating medium change, can preheat the fuel in order to more do benefit to the burning simultaneously.

Finally, it should be pointed out that any unit or person using or implementing the technical solution of the present invention is an infringement of the present invention, and that any unit or person, without the permission of the applicant, cannot implement the present patent alone. And any unit or individual motivated by, or susceptible to, the present invention when embodied in a simple, convenient or practical manner, is also to be considered as part of the present patent.

Claims

1. A negative pressure heating furnace is characterized by comprising a closed furnace body in an oxygen-free state, wherein a sacrificial anode is arranged in the furnace body, is welded on the furnace body to form a whole with the furnace body and is a current circulating body; the furnace body is also internally provided with a heat exchange device, a combustion device and a fuel preheating device;

2. The negative-pressure heating furnace according to claim 1, wherein the negative-pressure adjusting plate is welded to a full-length round steel by a circular plate with a diameter smaller than that of the chimney, the round steel extends out of the short circuit of the chimney, two sides of the round steel are fixed by nuts, and the adjusting plate is adjusted to a preset angle and then fixes the round steel by the nuts.

3. The negative pressure heating furnace according to claim 1, wherein the negative pressure adjusting plate is welded to a full length round steel by a circular plate having a diameter smaller than that of the chimney by 3 cm.

4. The negative-pressure heating furnace according to claim 1, wherein the negative-pressure heating furnace adopts an electroless negative-pressure injection type combustion system, the combustion system adopts a self-excited pneumatic control mode to realize the functions of automatic temperature adjustment and flameout protection, and the negative-pressure adjusting plate is used for adjusting the negative pressure degree in the hearth so as to enable the combustion to reach the optimal state.

5. The negative-pressure heating furnace according to claim 1, wherein the part of the smoke box extending outside the furnace body is provided with an explosion-proof device for automatically exhausting and releasing pressure through an explosion-proof door of the explosion-proof device when explosion occurs, so as to prevent the combustion device from being damaged.

6. The negative-pressure heating furnace according to claim 1, wherein the upper end of the furnace body is provided with an inspection opening, the inspection opening is connected with an inspection passage inside the furnace body, and the inspection opening is used for inspecting the internal structure of the furnace body through the inspection passage of the inspection opening after the furnace is stopped.

7. The negative-pressure heating furnace according to claim 1, wherein a liquid level display port for installing a liquid level meter is formed on the side of the furnace body.

8. The negative-pressure heating furnace according to claim 1, wherein the upper end of the furnace body is provided with a connecting hole for connecting an external device and symmetrical lifting lugs.

9. The negative-pressure heating furnace according to claim 1, wherein the lower end of the furnace body is welded with symmetrical supporting devices.