Vertical spiral coil water jacket heating furnace

Abstract

The utility model provides a vertical spiral coil water jacket heating furnace which comprises a box body, and a vertical combustion channel is arranged downwards along the top face of the box body. Water is contained in the box body; a spiral coil pipe is arranged in the box body and surrounds the combustion channel, and the two open ends of the spiral coil pipe are exposed out of the side wall of the box body. During use, combustion materials are combusted in the combustion channel, combustion heat is transferred into the box body, water in the box body is heated, then the temperature of the spiral coil pipe is increased, natural gas extracted from a gas well is introduced into the spiral coil pipe, and the temperature of the natural gas extracted from the gas well can be increased. The combustion channel is vertically designed, and the heating coil is of a spiral structure, so that the heating furnace has the advantages of being high in safety, low in energy consumption, high in heat exchange efficiency, small in occupied area and convenient to transport.

Description

Technical Field

[0001] The utility model relates to the technical field of heating furnace structures, in particular to a vertical spiral coil water jacket heating furnace. Background Art

[0002] The natural gas extracted from the gas well has high pressure and cannot be directly transported into the gathering and transportation pipeline network system. It needs to be throttled and depressurized. When the gas passes through the throttle valve, the pressure decreases, the volume expands, and the temperature drops sharply. Hydrates may be generated at the throttle valve to block the pipeline and affect normal production. In order to prevent the formation of hydrates, the natural gas must be heated before throttling.

[0003] At present, the natural gas heating device commonly used by various oil and gas field development units is a horizontal reciprocating coil heating furnace, which uses the heat generated by the combustion of fuel gas to heat water, and then puts the coil with natural gas produced from the gas well in hot water, so that the heat of the water is transferred to the natural gas through the heat exchange coil, thereby achieving the purpose of heating the natural gas. The heating furnace is a horizontal structure, and the coil used to heat the natural gas produced from the gas well is welded with a large number of elbows and straight pipes of about 90°, which occupies a large area. The erosion and cutting of the elbows by the fluid in the pipe can easily cause pipeline leakage. During the heating process of the natural gas fluid, a small amount of liquid water will gather in the pipeline; and the combustion channel of the horizontal heating furnace is arranged horizontally, which is not conducive to the combustion of natural gas, the heating area is single, the thermal efficiency is low, the energy consumption is large, and it is easy to cause the chamber to explode when the furnace fails to ignite.

[0004] Therefore, with the development of natural gas development technology, it is of great significance to study a natural gas heating furnace with high safety, low energy consumption, high heat exchange efficiency, small footprint and convenient transportation. Utility Model Content

[0005] The purpose of the utility model is to provide a vertical spiral coil water jacket heating furnace in view of the problems of low safety, high energy consumption, low heat exchange efficiency, large floor space and a small amount of liquid water still formed in the heat exchange coil commonly used in the prior art horizontal reciprocating coil heating furnace. It comprises a box body, the top surface of which is provided with a vertical combustion channel downward; water is contained in the box body; a spiral coil is provided around the combustion channel in the box body, and the two open ends of the spiral coil are exposed from the side wall of the box body. When in use, the fuel is burned in the combustion channel, the combustion heat is transmitted into the box body, and the water in the box body is heated to increase the temperature of the spiral coil, and the natural gas extracted from the gas well is passed into the spiral coil, so that the temperature of the natural gas extracted from the gas well can be increased, and it has high safety, low energy consumption, high heat exchange efficiency, small floor space and is easy to transport.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A vertical spiral coil water jacket heating furnace comprises a box body, a vertical combustion channel is arranged downward along the top surface of the box body; water is contained in the box body; a spiral coil is arranged in the box body around the combustion channel, and both open ends of the spiral coil are exposed from the side wall of the box body; the combustion channel is used to burn fuel to heat the water in the box body.

[0008] The utility model provides a vertical spiral coil water jacket heating furnace, including a box body, wherein a vertical combustion channel is downwardly arranged on the top surface of the box body; water is contained in the box body; a spiral coil is arranged in the box body around the combustion channel, and both open ends of the spiral coil are exposed from the side wall of the box body. When in use, the fuel is burned in the combustion channel, and the combustion heat is transmitted into the box body, and the water in the box body is heated to increase the temperature of the spiral coil. The natural gas extracted from the gas well is passed into the spiral coil, so that the temperature of the natural gas extracted from the gas well can be increased. Among them, the combustion channel is a vertical design, and the fuel gas combustion efficiency is sufficient, which can reduce carbon dioxide emissions and prevent the occurrence of chamber explosion. The fuel gas consumption of the same energy efficiency and power is minimal, the volume is small, the floor space is small, and transportation is convenient. The heating coil adopts a spiral structure, which can effectively reduce the erosion and cutting effect of the high-pressure natural gas flow in the coil on the coil, reduce the use of pipe elbows, reduce the coil erosion and perforation caused by high-pressure airflow, and cause leakage accidents, and improve safety performance. At the same time, the natural gas fluid flows in the spiral coil, forming a vortex effect, changing the fluid flow state, and liquid water is not easy to gather in the pipeline. Therefore, the heating furnace has the advantages of high safety, low energy consumption, high heat exchange efficiency, small footprint, and easy transportation.

[0009] As a preferred solution of the present utility model, the number of turns of the spiral coil is determined by calculation based on the heat exchange energy and heat exchange efficiency.

[0010] As a preferred solution of the utility model, a burner is provided at the bottom of the combustion channel, and the burner is used to burn fuel gas to provide heat.

[0011] As a preferred solution of the utility model, the combustion channel is an inverted cone structure. The inverted cone design is in the shape of a flame outline, which is conducive to the mixing of fuel gas and air to form an optimal mixing ratio, so that the fuel is fully burned and the maximum calorific value is released. The vertical combustion furnace is also easy to form a chimney effect and quickly discharge the combustion exhaust gas.

[0012] As a preferred solution of the utility model, it also includes a ventilation pipe, one end of which is connected to the bottom end of the combustion channel, and the other end is exposed after passing through the box body, and a damper structure is provided at the exposed end of the ventilation pipe. The ventilation pipe can provide an oxygen source for the combustion of the combustion gas, and the damper can adjust the ventilation flow rate.

[0013] As a preferred solution of the present invention, the side wall of the combustion channel and the spiral coil are both components made of heat transfer material.

[0014] As a preferred solution of the utility model, a chimney pipe is arranged on the top surface of the box body, and the chimney pipe is communicated with the combustion channel.

[0015] As a preferred solution of the utility model, an expansion water tank is arranged on the top surface of the box body, and the expansion water tank is used to receive water overflowing from the box body.

[0016] As a preferred solution of the utility model, a heat-insulating layer is provided on the outside of the box.

[0017] As a preferred solution of the utility model, the spiral coil is a spiral evenly distributed structure. The spiral is evenly distributed in the heating water bath. Under the same power, the contact area between the coil and the hot water is increased, the heating furnace heats up quickly, and the heat energy conversion efficiency is higher.

[0018] As a preferred embodiment of the utility model, the angle between the spiral coil and the horizontal plane is 13° to 18°; the angle between the spiral coils is 23° to 30°. The appropriate angle setting can prevent the high-speed airflow from cutting the pipe wall, and the water in the natural gas will not gather in the coil, preventing the coil from corroding.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] The utility model provides a vertical spiral coil water jacket heating furnace, including a box body, wherein a vertical combustion channel is downwardly arranged on the top surface of the box body; water is contained in the box body; a spiral coil is arranged in the box body around the combustion channel, and both open ends of the spiral coil are exposed from the side wall of the box body. When in use, the fuel is burned in the combustion channel, and the combustion heat is transmitted into the box body, and the water in the box body is heated to increase the temperature of the spiral coil. The natural gas extracted from the gas well is passed into the spiral coil, so that the temperature of the natural gas extracted from the gas well can be increased. Among them, the combustion channel is a vertical design, and the fuel gas combustion efficiency is sufficient, which can reduce carbon dioxide emissions and prevent the occurrence of chamber explosion. The fuel gas consumption of the same energy efficiency and power is minimal, the volume is small, the floor space is small, and transportation is convenient. The heating coil adopts a spiral structure, which can effectively reduce the erosion and cutting effect of the high-pressure natural gas flow in the coil on the coil, reduce the use of pipe elbows, reduce the coil erosion and perforation caused by high-pressure airflow, and cause leakage accidents, and improve safety performance. At the same time, the natural gas fluid flows in the spiral coil, forming a vortex effect, changing the fluid flow state, and liquid water is not easy to gather in the pipeline. Therefore, the heating furnace has the advantages of high safety, low energy consumption, high heat exchange efficiency, small footprint, and easy transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the appearance structure of the heating furnace in the embodiment.

[0022] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the interior of the heating furnace in the embodiment.

[0023] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the interior of another heating furnace in the embodiment.

[0024] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure.

[0025] Figure 5 for Figure 3 Schematic diagram of the partial cross-sectional structure of the interior of the improved heating furnace.

[0026] Figure 6 Schematic diagram of the structure of the spiral coil.

[0027] Icons: 1-box; 11-combustion channel; 111-burner; 12-spiral coil; 121-opening end; 13-ventilation pipe; 131-damper structure; 14-chimney pipe; 15-expansion water tank; 2-insulation layer. DETAILED DESCRIPTION

[0028] The utility model is described in detail below in conjunction with the accompanying drawings.

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Example

[0030] like Figure 1-6As shown, an embodiment provides a vertical spiral coil water jacket heating furnace, including a box body 1, and a vertical combustion channel 11 is arranged downward along the top surface of the box body 1; the combustion channel 11 is arranged vertically, and the top is open. Preferably, the bottom of the combustion channel 11 is close to the bottom end of the box body 1. The conventional combustion channel 11 can be arranged in a cylindrical shape or a rectangular shape. The combustion channel 11 is a vertical design, and the fuel gas combustion efficiency is sufficient, which can reduce carbon dioxide emissions and prevent the occurrence of the explosion phenomenon. The fuel gas consumption of the same energy efficiency power is minimal, the volume is small, the floor space is small, and it is convenient to transport. Water is contained in the box body 1; a spiral coil 12 is arranged in the box body 1 around the combustion channel 11, and the two open ends 121 of the spiral coil 12 are exposed from the side wall of the box body 1. The heating coil adopts a spiral structure, which can effectively reduce the erosion and cutting effect of the high-pressure natural gas flow in the coil on the coil, reduce the use of pipe elbows, reduce the leakage accidents caused by erosion and perforation of the coil due to high-pressure airflow, and improve safety performance. At the same time, the natural gas fluid flows in the spiral coil to form a vortex effect, which changes the flow state of the fluid, and liquid water is not easy to gather in the pipeline.

[0031] Preferably, if Figure 3 and Figure 4 As shown, the combustion channel 11 is an inverted cone structure. The inverted cone design is in the shape of a flame outline, which is conducive to the mixing of fuel gas and air to form an optimal mixing ratio, so that the fuel is fully burned and the maximum calorific value is released. The vertical combustion furnace is also easy to form a chimney effect and quickly discharge the combustion exhaust gas.

[0032] Preferably, it further comprises a ventilation pipe 13, one end of which is connected to the bottom end of the combustion channel 11, and the other end of which is exposed after passing through the box body 1, and a damper structure 131 is provided at the exposed end of the ventilation pipe 13. The ventilation pipe 13 can provide an oxygen source for the combustion of the combustion gas, and the damper structure 131 can adjust the ventilation flow rate.

[0033] When in use, the fuel is burned in the combustion channel, the combustion heat is transmitted into the box, and the water in the box is heated to increase the temperature of the spiral coil. The natural gas extracted from the gas well is passed into the spiral coil, which can increase the temperature of the natural gas extracted from the gas well. The flow direction of the natural gas extracted from the gas well is as follows: Figure 2 As indicated by the arrow in .

[0034] Specifically, the number of turns of the spiral coil 12 is determined by calculation based on the heat exchange energy and heat exchange efficiency.

[0035] In some embodiments, a burner 111 is disposed at the bottom of the combustion channel 11 , and the burner 111 is used to burn fuel gas to provide heat.

[0036] Specifically, the side wall of the combustion channel 11 and the spiral coil 12 are both made of heat transfer material, such as copper, aluminum, iron or stainless steel.

[0037] Preferably, if Figure 5 As shown, the top surface of the housing 1 is provided with a chimney pipe 14, and the chimney pipe 14 is connected to the combustion channel 11. Preferably, the top surface of the housing 1 is provided with an expansion water tank 15, and the expansion water tank 15 is used to receive water overflowing from the housing 1. The high-temperature flame of the fuel natural gas ejected from the burner directly enters the combustion channel, and the water around the combustion channel pipes decreases in density and rises after being heated. After heat transfer with the gas coil, the temperature drops, the density increases and sinks, and is heated and rises again, and this cycle continues. The natural gas flowing through the coil continuously obtains heat from the coil and the temperature increases.

[0038] Preferably, a heat-insulating layer 2 is provided outside the box body 1 .

[0039] Preferably, the spiral coil 12 is a spirally evenly distributed structure. The spirals are evenly distributed in the heating water bath, and under the same power, the contact area between the coil and the hot water is increased, the heating furnace is heated faster, and the heat energy conversion efficiency is higher.

[0040] Preferably, if Figure 6 As shown, the angle between the spiral coil 12 and the horizontal plane is 13° to 18°, as shown by angle α in the figure; the angle between the spiral coils 12 is 23° to 30°, as shown by angle β in the figure. The appropriate angle setting can prevent the high-speed airflow from cutting the pipe wall, and the water in the natural gas will not gather in the coil, preventing the coil from corroding.

[0041] The heat generated by the combustion of fuel natural gas is used to heat water. The spiral gas coil is submerged in hot water, and the throttled natural gas flows through the coil. The heat of the hot water is transferred to the natural gas through the coil, thereby achieving the purpose of heating the natural gas.

[0042] Water jacket heating furnaces are widely used in production fields such as land and offshore natural gas extraction, and can also be used in the heating of flammable and explosive liquids (gases). This patent has been simply modified, has a small size, is easy to transport, and is suitable for transportation in remote areas.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical spiral coil water jacket heating furnace, characterized in that: It comprises a box body, and a vertical combustion channel is arranged downward along the top surface of the box body; Water is contained in the box; a spiral coil is arranged in the box around the combustion channel, and both open ends of the spiral coil are exposed from the side wall of the box; the number of turns of the spiral coil is determined according to the heat exchange energy and heat exchange efficiency; the angle between the spiral coil and the horizontal plane is 13° to 18°; the angle between the spiral coils is 23° to 30°; The combustion channel is used for burning fuel to heat the water in the box, and the combustion channel is an inverted cone structure.

2. The vertical spiral coil water jacket heating furnace according to claim 1, characterized in that: A burner is arranged at the bottom of the combustion channel, and the burner is used for burning fuel gas to provide heat.

3. The vertical spiral coil water jacket heating furnace according to claim 2, characterized in that: It also includes a ventilation pipe, one end of which is communicated with the bottom end of the combustion channel, and the other end of which passes through the box body and is exposed outside. The exposed end of the ventilation pipe is provided with a damper structure.

4. The vertical spiral coil water jacket heating furnace according to claim 1, characterized in that: The side wall of the combustion channel and the spiral coil are both components made of heat transfer material.

5. The vertical spiral coil water jacket heating furnace according to claim 1, characterized in that: A chimney pipe is arranged on the top surface of the box body, and the chimney pipe is communicated with the combustion channel.

6. The vertical spiral coil water jacket heating furnace according to claim 1, characterized in that: The top surface of the box body is provided with an expansion water tank, and the expansion water tank is used to receive water overflowing from the box body.

7. The vertical spiral coil water jacket heating furnace according to claim 1, characterized in that: A heat-insulating layer is arranged outside the box.

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