CN212006231U

CN212006231U - Vacuum phase-change furnace

Info

Publication number: CN212006231U
Application number: CN202020273267.9U
Authority: CN
Inventors: 陈广强; 吕静; 苏崇传
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 vacuum phase-change furnace, which comprises an airtight furnace body in an anaerobic state, wherein 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 and a smoke box, wherein the combustion chamber, the smoke pipe and the smoke box are connected end to end, a smoke disturbance device is arranged in the smoke pipe, the smoke disturbance device is placed in the smoke pipe and clamped at the smoke outlet side, and the end parts of the combustion chamber and the smoke box extend out of the furnace body; 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 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 utility model discloses heating efficiency is high, long service life.

Description

Vacuum phase-change furnace

Technical Field

The utility model relates to a special firing equipment of oil gas field, especially a furnace body still can normal operating's vacuum phase transition stove under negative pressure or little positive pressure.

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 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 vacuum 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, high automation degree and the like. However, when the existing vacuum heating furnace operates under negative pressure or slight positive pressure, impurities can be brought into the furnace along with water, and the phenomena of scaling, overburning, bulging, corrosion, poor heat exchange and the like occur, so that the furnace water needs to be frequently replaced for pollution discharge, and the working efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of scaling, overburning and bulging of the existing vacuum heating furnace, and inventing a vacuum phase-change furnace, wherein a heating coil is arranged in the vacuum phase-change furnace, and phase-change heat exchange is carried out between working medium water in the furnace and a heated medium in the coil in a closed furnace body.

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

a vacuum phase-change furnace comprises a closed furnace body in an oxygen-free state, wherein 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 and a smoke box, wherein the combustion chamber, the smoke pipe and the smoke box are connected end to end, a smoke disturbance device is arranged in the smoke pipe, the smoke disturbance device is placed in the smoke pipe and clamped at the smoke outlet side, and the end parts of the combustion chamber and the smoke box extend out of the furnace body; 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 furnace body is internally provided with a sacrificial anode which is welded on the furnace body to form a whole with the furnace body and is a current circulating body.

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 smoke pipe is internally provided with the smoke disturbance device, so that the heat exchange coefficient can be obviously increased, the smoke exhaust temperature is reduced, the heat loss brought away by smoke is reduced, and the heat efficiency is increased; 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 advanced full-automatic combustor, sturdy and durable, degree of automation is high, 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 turbulator provided by the present invention;

fig. 5 is a C diagram of fig. 4.

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 smoke disturbance device 14 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 fig. 1-5, the embodiment of the utility model discloses a vacuum phase change furnace, which comprises a closed furnace body 1 in an oxygen-free state, wherein a heat exchange device, a combustion device and a fuel preheating device 12 are arranged in the furnace body;

the heat exchange device is composed of a heating coil 2, and two ends of the heating coil extend out of the furnace body; the combustion device consists of a combustion chamber 3, a smoke pipe 4 and a smoke box 5, the combustion chamber, the smoke pipe and the smoke box are connected end to end, a smoke disturbance device 13 is arranged in the smoke pipe, the smoke disturbance device is placed in the smoke pipe and clamped at the smoke outlet side, and the end parts of the combustion chamber and the smoke box extend out of the furnace body; 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 furnace body is internally provided with a sacrificial anode 14 which is welded on the furnace body to form a whole with the furnace body and is a current circulating body to prevent the corrosion of the furnace body.

The part of the smoke box extending out of the furnace body 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 is provided with an inspection opening 7, 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.

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

The upper end of the furnace body 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 relates to an indirect heating hot water boiler, which is formed by arranging a heating coil in a gas phase space in a transfer furnace body. The utility model discloses at the during operation, the fuel gets into the tobacco pipe after the combustion in the combustion chamber, at last, exhaust into the atmosphere through the smoke box, pharyngeal gas radiates heat release at the combustion chamber in this process, convection heat release in the tobacco pipe, make the water (intermediate medium) in the furnace body heated, a part of water is heated into the saturated vapor under the vacuum state, make furnace body upper portion form the steam space, the vapor meets phase transition heat exchange tube and fuel preheating device and condenses into water and fall back water space automatically, evaporation-condensation-evaporation … …, so circulate ceaselessly, supply the user with after heating up by the heating medium in the heating coil; the fuel in the fuel preheating device is preheated, so that the combustion effect can be improved (the fuel with high temperature is easier to combust); the turbulence device is arranged in the smoke pipe and clamped at the smoke outlet side, so that the smoke exhaust temperature is reduced, and the heat efficiency is improved; 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 vacuum phase change 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. The vacuum phase change furnace can realize dual purposes of steam and hot water, can supply steam or hot water independently, and can also supply steam and hot water simultaneously, thereby bringing great convenience to users needing steam and hot water 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 vacuum phase-change furnace is characterized by comprising a closed furnace body in an oxygen-free state, wherein a heat exchange device, a combustion device and a fuel preheating device are arranged in the furnace body;

2. The vacuum phase-change furnace according to claim 1, wherein the part of the smoke box extending out of 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.

3. The vacuum phase-change furnace as claimed in claim 1, wherein the upper end of the furnace body is provided with an inspection port, the inspection port is connected with an inspection channel inside the furnace body, and the inspection port is used for inspecting the internal structure of the furnace body through the inspection channel of the inspection port after the furnace is stopped.

4. The vacuum phase-change furnace according to claim 1, wherein a liquid level display port for installing a liquid level meter is arranged on the side of the furnace body.

5. The vacuum phase change 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.

6. The vacuum phase change furnace according to claim 1, wherein the lower end of the furnace body is welded with a symmetrical supporting device.