Direct-current tubular heat exchange furnace body equipment

Abstract

A direct-current tubular heat exchange furnace body device comprises a heat exchange chamber, the heat exchange chamber is provided with a top face, a bottom face and two side faces, a burner connector flange is arranged on the front wall of the heat exchange chamber, n heat exchange tubes in the vertical direction are fixedly arranged in the heat exchange chamber, n is a positive integer larger than or equal to 2, and n is a positive integer larger than or equal to 2. Wherein one end of the first heat exchange water pipe is connected with an entered heating medium, a heating medium inlet of the nth heat exchange pipe is connected and communicated with a heating medium outlet of the (n-1) th heat exchange pipe through a U-shaped elbow, the nth heat exchange pipe is connected to an inlet of the annular heat exchange pipe, the annular heat exchange pipe is located on the rear wall of the combustor flange, the annular shape is a closed shape or a non-closed shape, and the annular heat exchange pipe is connected to the inlet of the annular heat exchange pipe. And the output heat medium is output from an outlet of the annular heat exchange pipe. The equipment is not prone to deformation and easy to overhaul.

Description

Technical Field

[0001] The utility model relates to heat exchange equipment, in particular to a direct-flow tube type heat exchange furnace equipment, belonging to the technical field of heat exchange. Background Art

[0002] The DC tube heat exchange equipment adopts a DC tube, and the heat medium enters from one end of the DC tube and flows out from the other end. In order to increase the heat transfer area, the DC tube is usually made into a U-shaped bent tube. The applicant disclosed a DC tube biomass steam generator in Chinese patent CN 214038335U. The steam generator uses biomass as raw material and has a fast steam generation speed. In actual use, many customers use natural gas as fuel and hope to configure an air-cooled flat burner (because the air-cooled flat burner has a simpler structure and lower cost than water-cooled). When the current DC tube heat exchange furnace body is used, the joint part of the furnace body and the flat burner is prone to deformation after a long time, resulting in poor sealing, and external air enters the furnace body to affect combustion and heat exchange. In addition, the heat exchange tubes of the current DC tube heat exchange equipment are inconvenient to repair. Summary of the invention

[0003] The utility model aims to overcome the above problems existing in the current direct-current tubular heat exchange equipment and provide a direct-current tubular heat exchange furnace equipment.

[0004] In order to achieve the purpose of the utility model, the following technical scheme is adopted: a direct current tubular heat exchange furnace body equipment, the heat exchange furnace body equipment includes a heat exchange chamber, the heat exchange chamber has a top surface, a bottom surface and two side surfaces, a burner interface flange is provided on the front wall of the heat exchange chamber, and n vertical heat exchange tubes are fixedly arranged in the heat exchange chamber, n is a positive integer greater than or equal to 2, wherein one end of the first heat exchange water pipe is connected to the incoming heat medium, the heat medium inlet of the nth heat exchange tube is connected to the heat medium outlet of the n-1th heat exchange tube through a U-shaped elbow, and is connected to the annular heat exchange tube inlet after the nth heat exchange tube, the annular heat exchange tube is located on the rear wall of the burner flange, the annular ring is a closed ring or a non-closed ring, and the output heat medium is output from the annular heat exchange tube outlet.

[0005] Furthermore; the heat exchange tubes are arranged in a matrix from back to front, with left and right as rows and front and back as columns, the heat medium enters from the edge of the heat exchange tube in the last row, and is connected to the annular heat exchange tube from the edge of the heat exchange tube in the front row, and two adjacent heat exchange tubes in a row are connected in series through a U-shaped elbow, and the heat exchange tube at the end of the series in a row is connected in series with the heat exchange tubes opposite to each other in the previous row through a U-shaped elbow.

[0006] Furthermore; the number of heat exchange tubes is greater than or equal to 3, the upper end and the lower end of the heat exchange tube pass through the top surface and the bottom surface of the heat exchange chamber respectively, the U-shaped elbow is welded to the ends of the two heat exchange tubes, the upper U-shaped elbow is located above the top surface, and the lower U-shaped elbow is located below the bottom surface, an upper inspection cover fixedly connected to the top surface is arranged above the upper U-shaped elbow, and a lower inspection cover fixedly connected to the bottom surface is arranged below the lower U-shaped elbow.

[0007] Furthermore, the two rows of heat exchange tubes located on the left and right sides are light tubes, and the light tubes are sealed to form membrane walls on both sides, and the heat exchange tubes in other rows are finned tubes.

[0008] Furthermore, outer sides of the membrane walls on both sides are provided with outer sides.

[0009] The positive and beneficial technical effects of the utility model are that the device is not easily deformed and is easy to repair, which will be described in detail in conjunction with the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an overall schematic diagram of the utility model.

[0011] Figure 2 It is a schematic diagram with the burner flange, upper inspection cover and lower inspection cover removed.

[0012] Figure 3 It is a schematic diagram of a cross section in the left and right directions.

[0013] Figure 4 This is a schematic diagram after removing the outer wall on one side. DETAILED DESCRIPTION

[0014] In order to more fully explain the implementation of the utility model, implementation examples of the utility model are provided. These implementation examples are only for the purpose of illustrating the utility model and do not limit the scope of the utility model.

[0015] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: top surface; 2: bottom surface; 3: burner interface flange; 4: heat medium inlet; 5: heat medium outlet; 6: upper inspection cover; 7: lower inspection cover; 8: right outer side wall; 9: heat exchange tube; 10: fin tube; 11: light tube; 12: annular heat exchange tube; 13: U-shaped elbow; 14: right membrane wall; 15: left model wall; 16: left outer side wall; 17: heat exchange chamber; 18: rear flange.

[0016] As shown in the attached drawings, a direct-flow tube heat exchange furnace device includes a heat exchange chamber 17, the heat exchange chamber has a top surface 1, a bottom surface 2 and two side surfaces, a burner interface flange 3 is provided on the front wall of the heat exchange chamber, and a rear flange 18 is provided at the rear of the heat exchange chamber. The rear flange can be used to connect a waste heat recovery device. N vertical heat exchange tubes are fixedly arranged in the heat exchange chamber, where n is a positive integer greater than or equal to 2, wherein one end of the first heat exchange water pipe is connected to the incoming heat medium, 4 is shown as the heat medium inlet, and the inlet The incoming heat medium enters from the heat medium inlet, which is located at the lower end of the heat exchange tube. The heat medium inlet of the nth heat exchange tube is connected to the heat medium outlet of the n-1th heat exchange tube through a U-shaped elbow 13, and is connected to the inlet of the annular heat exchange tube 12 after the nth heat exchange tube. The annular heat exchange tube 12 is located on the rear wall of the burner flange 3, that is, the wall inside the heat exchange chamber. The ring is a closed ring or a non-closed ring. The output heat medium is output after the annular heat exchange tube outlet. 5 is the heat medium outlet, that is, the output heat medium is output from the heat medium outlet.

[0017] Specifically in this embodiment, the heat exchange tubes are arranged in a matrix from back to front, with left and right as rows and front and back as columns. The heat medium enters from the edge of the heat exchange tube in the last row and is connected to the annular heat exchange tube from the edge of the heat exchange tube in the front row. Two adjacent heat exchange tubes in a row are connected in series via a U-shaped elbow 13. The heat exchange tube at the end of the series in a row is connected in series with the heat exchange tubes opposite to each other in the previous row via a U-shaped elbow 13. The two columns of heat exchange tubes on the left and right sides are light tubes 11. The light tubes are closed to form membrane walls on both sides. In the figure, 14 shows the right membrane wall and 15 shows the left mode wall. The mode walls on both sides are the side surfaces of the heat exchange chamber. Outer walls are arranged on the outside of the membrane walls on both sides. 8 shows the right outer wall and 16 shows the left outer wall. Except for the light tubes, the heat exchange tubes in other columns are finned tubes 10.

[0018] In this embodiment, the upper end and the lower end of the heat exchange tube pass through the top surface and the bottom surface of the heat exchange chamber respectively, and the U-shaped elbow is welded to the ends of the two heat exchange tubes. The upper U-shaped elbow is located above the top surface, and the lower U-shaped elbow is located below the bottom surface. An upper inspection cover 6 fixedly connected to the top surface is provided above the upper U-shaped elbow, and a lower inspection cover 7 fixedly connected to the bottom surface is provided below the lower U-shaped elbow. In this way, it is very convenient to inspect the weld between the U-shaped elbow and the heat exchange tube without damaging the heat exchange chamber.

[0019] Of course, in addition to the matrix arrangement, the heat exchange tubes can also be arranged in a staggered manner between rows and columns.

[0020] The heat medium of the combustion equipment can be water or oil, and can be used in hot water boilers, steam generators, and high-temperature oil generators. The heat medium can be transported by a corresponding power pump outside the furnace.

[0021] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.

Claims

1. A direct-flow tube heat exchange furnace device, comprising a heat exchange chamber, the heat exchange chamber having a top surface, a bottom surface and two side surfaces, and a burner interface flange on the front wall of the heat exchange chamber, characterized in that: N vertical heat exchange tubes are fixedly arranged in the heat exchange chamber, where n is a positive integer greater than or equal to 2, wherein one end of the first heat exchange water tube is connected to the incoming heat medium, the heat medium inlet of the nth heat exchange tube is connected to the heat medium outlet of the n-1th heat exchange tube through a U-shaped elbow, and is connected to the annular heat exchange tube inlet after the nth heat exchange tube. The annular heat exchange tube is located on the rear wall of the burner flange, and the annular ring is a closed ring or a non-closed ring. The output heat medium is output after the annular heat exchange tube outlet.

2. The direct-flow tube heat exchange furnace device according to claim 1, characterized in that: The heat exchange tubes are arranged in a matrix from back to front, with left and right as rows and front and back as columns. The heat medium enters from the edge of the heat exchange tube in the last row and is connected to the annular heat exchange tube from the edge of the heat exchange tube in the front row. Two adjacent heat exchange tubes in a row are connected in series through a U-shaped elbow. The heat exchange tube at the end of the series in a row is connected in series with the heat exchange tubes in the previous row opposite to each other through a U-shaped elbow.

3. The direct-flow tube heat exchange furnace device according to claim 1, characterized in that: The number of heat exchange tubes is greater than or equal to 3, the upper end and the lower end of the heat exchange tube pass through the top surface and the bottom surface of the heat exchange chamber respectively, the U-shaped elbow is welded to the ends of the two heat exchange tubes, the upper U-shaped elbow is located above the top surface, and the lower U-shaped elbow is located below the bottom surface, an upper inspection cover fixedly connected to the top surface is arranged above the upper U-shaped elbow, and a lower inspection cover fixedly connected to the bottom surface is arranged below the lower U-shaped elbow.

4. The direct-flow tube heat exchange furnace device according to claim 2, characterized in that: The two rows of heat exchange tubes located on the left and right sides are plain tubes, and the plain tubes are sealed to form membrane walls on both sides. The heat exchange tubes in other rows are all finned tubes.

5. The direct-flow tube heat exchange furnace device according to claim 4, characterized in that: Outer walls are arranged on the outer sides of the membrane walls on both sides.

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